Report - listing of OFFICIAL Products in database, sorted by product name.
 

Product Name	Brief Description
7-Day Evapotranspiration Forecast	The 7-day evapotranspiration forecast displays graphically on the Internet the expected amount of evapotranspiration in hundredths of an inch for each of the next 7 days using a reference crop of alfalfa. A second graphic is provided for each day that indicates whether the evapotranspiration is expected to be above or below normal. This product will be issued daily at 5 am local time on a seasonal basis (March 15-October 15).
Graphical Convective Outlook for the Alaska FIR	The Alaska Aviation Weather Unit (AAWU) issues area forecasts that include thunderstorm information for each zone. These forecasts contain information as to the timing and some detail in a text format. This new product would provide this information in a graphical format. It will be the convective guidance for 0-12 and 12-24-hour time periods. Included are areas where convection will occur as isolated, scattered, or numerous. Severe convection potential would be outlined. Other details such as the thunderstorm bases and tops, timing of development, and some graphical reasoning indicated.
Observed Precipitation Map	The National Weather Service (NWS) collects rainfall data to support its forecast and warning operations. Individual River Forecast Centers (RFCs)and Weather Forecast Offices typically provide rainfall collectives in text format and graphical format for their areas of responsibility. The National Centers for Environmental Prediction (NCEP) Climate Prediction Center (CPC), collects additional data from cooperative observers. This rainfall data is made available to HPC and is used extensively for verification purposes.This rainfall data is plotted on a map of the CONUS and made available to forecasters. The data is used for feedback on forecast accuracy and can be used in case studies and other scientific endeavors.
Water Resource Outlook Multi-Media Briefing	This Internet-based multi-media recorded briefing provides water managers in the Southeast U.S. with a one to three month water resource outlook based on current surface water/groundwater/soil conditions, reservoir conditions, input from state and federal water resource partners on supply and water use, Climate Prediction Center weekly/monthly temperature and precipitation forecasts, and SERFC ensemble streamflow predictions.
Weekend Weather Graphic	Web site statistics have shown that traffic on WFO websites increases as the weekend approaches. Customers are looking for the forecast for the upcoming weekend so that they can plan their activities. The Weekend Weather Graphic provides a quick and easily accessible view of the forecast for the weekend. The Weekend Weather Graphic is comprised of maximum temperature (MaxT),minimum temperature(MinT), and probability of precipitation (PoP) derived from the NDFD grids for the WFO forecast area.
3- to 14-day Hazards Assessment	The Climate Prediction Center issues this product for the contiguous U.S. and Alaska to provide potential hazardous conditions from extreme temperature, high wind, heavy precipitation or lack of precipitation, and dry or moist soils and wildfire risk.
3- to 14-day Hazards Assessment Discussion	The Climate Prediction Center (CPC) provides a text discussion for the contiguous U.S. and Alaska with technical insight to further assist in assessing potentially hazardous conditions in the 3-to 14-Day Hazards Assesment.
6- to 10-Day and 8- to 14-day Excessive Heat Outlooks (Contiguous U.S)	The Climate Prediction Center (CPC) issues 6- to 10-Day and 8- to 14-Day excessive heat outlooks in probabilistic format for the Contiguous U.S.
6- to 10-Day and 8- to 14-day Maximum Heat Index Prediction	The Climate Prediction Center (CPC) issues 6- to 10-Day and 8- to 14-Day Maximum Heat Index Predictions for approximately 200 locations in the Contiguous U.S.
6- to 10-Day and 8- to 14-Day Mean North American 500 millibar Outlook	The Climate Prediction Center (CPC) issues these outlooks to provide insight into the 6- to 10-day and 8- to 14-day temperature and precipitation outlooks by indicating mean circulation patterns.
6- to 10-Day and 8- to 14-day Minimum Wind Chill Prediction (Contiguous U.S and Alaska)	CPC will issue maps indicating the probability (in percent) that the minimum wind chill value will in the below normal category and below seven specific thresholds: 32F, 28F, 20F, 10F, 0F, -20F, and -40F. The wind chill index formula is described in Instruction 10-513 (WFO Winter Weather Products Specification)
6- to 10-Day and 8- to 14-Day Outlook Discussion (Contiguous U.S. and Alaska).	The Climate Prediction Center (CPC) provides a technical discussion of the meteorological and climatological basis for the outlooks.
6- to 10-Day and 8- to 14-Day Outlooks (Contiguous U.S. and Alaska)	The Climate Prediction Center (CPC) issues 6- to 10-Day and 8- to 14-Day outlooks in probabilistic format for the Contiguous U.S. and Alaska.
ABRFC Recreational Forecast Graphics	The National Weather Service (NWS) is the agency responsible for issuing river forecasts and flood warnings for the United States. This information is provided in order to protect life and property as well as to enhance the national economy. In cooperation with national, state and local agencies, as well as private organizations and the public, the NWS determines the river levels which correspond to the beginning of significant damage from high water. This level of water at a given river location is termed flood stage. The NWS issues special river forecasts and flood warnings when levels are expected to equal or exceed flood stage. In addition to problems caused by flooding, various users have danger and incur risk due to river fluctuations and river levels lower than flood stage. Examples of these types of users of river forecast information include navigation interests or the general public who use the river and river banks for recreational purposes. The experimental Recreational Forecast graphics are Internet web pages that depict the expected river levels for the Illinois River of Oklahoma, a very popular canoe and raft float stream. These expected stream flow levels are translated to a river floatability index based on guidelines provided by the Illinois River Association and the State of Oklahoma Scenic Rivers Commission. Recreational interests can use the information to better insure a safe experience on and near the river.
ADVANCED HYDROLOGIC PREDICTION SERVICE (AHPS) FLOOD INUNDATION MAP INTERFACE	The NWS River Forecast Centers produce river stage forecasts for more than three thousand locations in the U.S. These forecasts reference numeric gage heights at a single site along the river, generally in or near a city. Flood inundation maps are available for specific NWS forecast points where a flood inundation library has been developed through a partnership with Federal, state, and/or local agencies. Flood Inundation Maps show the extent of flooding expected spatially over a given area. This will indicate where roadways, streets, buildings, airports, etc., are likely to be impacted by floodwaters. Combined with river observations and NWS river forecasts, inundation maps provide decision-makers additional information needed to better mitigate the impacts of flooding and build more resilient communities.
Air Quality Index (AQI)	The Air Quality Index (AQI)), also know as Clearing Index and Ventilation Index is both a text and graphical product produced by forecasters in support of the Fire Weather Program. The AQI has been used for many years by health and land management officials to help determine pollution and smoke dispersion on any given day. AQI numbers range from 0 (no dispersion) to 1000+ (excellent dispersion). When used as a Ventilation Index, values range from 0 to 100,000
Airman's Meteorological Advisories (AIRMET)	AIRMETs are concise descriptions in abbreviated language of the development and occurrence or expected occurrence in time and space of specified en-route weather phenomena issued by the National Weather Services Aviation Weather Center, Alaskan Aviation Weather Unit, and Weather Forecast Office Honolulu. AIRMET phenomena can affect the safety of aircraft operations. Bulletins contain details of potentially hazardous conditions over the continental United States, Alaska, Hawaii, and adjacent waters. An AIRMET will be issued when any of the following weather phenomena occur and affect an area of at least 3,000 square miles: Moderate icing, Moderate turbulence, Sustained surface wind of 30 knots or more, Ceilings less than 1,000 feet and/or visibility less than miles affecting over 50 percent of an area at any one time or, Extensive mountain obscuration (may be less than 3000 square miles for Pacific Ocean islands).
Alaska Graphic Area Forecast	The Alaska Graphic Area Forecast (GFA) is a graphical representation of forecasts contained in the text Area Forecasts (FA) for Alaska. The GFA is comprised of four separate graphics produced using NMAP software at the Alaska Aviation Weather Unit (AAWU).
Alaska Low Level Significant Weather Graphic (SWL)	The Alaska Low Level Significant Weather Graphic (SWL) is a graphic product providing an outlook forecast of significant weather for aviation below 25,000 ft (FL250).
Alaskan Sea Surface Temperature Analysis	Sea surface temperature analysis for the waters surrounding Alaska.
Atlantic and Pacific High Wind and Associated Seas	Depicts areas of strong winds and associated seas over large parts of the Atlantic and Pacific. Issued outside the hurricane season.
Atlantic Hurricane Outlook	The Climate Prediction Center (CPC) issues the Hurricane Outlook for the Atlantic basin. No outlook, however, can give certainty as to whether or not a particular locality will be impacted by a tropical storm or hurricane in any given year.
Audio Weather Briefing	The Audio Weather Briefing is an Internet-accessible recording that provides a wide suite of weather information. The recording contains information that alerts users to any hazardous weather that is forecast to affect the region for a period of seven days from the recording date, with a heavy emphasis on the current days weather. The recording explains, in broad and primarily non-technical terms, what weather features are expected to affect the region, as well as what specific weather hazards may result from these features (flooding, tornadoes, excessive heat, severe thunderstorms, tropical weather, fog, rip currents, etc.)
Aviation Area Forecast (FA)	Aviation Area Forecasts (FAs) describe in abbreviated language the development and occurrence or expected occurrence in time and space of specified en-route weather phenomena below Flight Level (FL) 45,000 ft (450). The FA is a forecast of visual meteorological conditions(VMC), clouds, and general weather conditions over an area the size of several states. In Alaska, the FA also includes forecasts of Instrument Flight Rule (IFR) conditions as well as other AIRMET and SIGMET information on thunderstorms, wind, icing and turbulence. Over CONUS and Hawaii, the FA must be used in conjunction with the in-flight aviation weather advisories to understand the complete weather picture. Together, they are used to determine forecast en-route weather and to interpolate conditions at airports for which no Terminal Area Forecasts (TAFs) are issued.
Aviation Digital Data Service	The Aviation Digital Data Service (ADDS) makes available to the aviation community through the internet digital and graphical analyses, forecasts and observations of meteorological variables. Developed as the data distribution component of the Aviation Gridded Forecast System (AGFS), ADDS is a joint effort of NOAA Forecast Systems Laboratory (FSL), NCAR Research Applications Program (RAP), and the National Centers for Environmental Prediction (NCEP)Aviation Weather Center (AWC). ADDS makes access to National Weather Service aviation observations and forecasts easy by integrating this information in one location, and by providing visualization tools to assist the application of thisinformation for flight planning.
Aviation Digital Data Service Flight Path Tool	The FPT allows a user to view data along a specified route of flight. The user can view important weather information on a map. Points can be entered along a route, so that the data can be viewed in a vertical cross section. Weather information that can be displayed on the FPT horizontal and vertical cross section views includes, but is not limited to: Wind Temperature Relative humidity Icing potential Turbulence potential AIRMETs and SIGMETs PIREPs TAFs METARs
Aviation Tropical Cyclone Advisory (TCA)	The TCA is an alphanumeric text product produced by hurricane forecasters consisting of information extracted from the official National Hurricane Center forecasts. The TCA is intended to provide short-term tropical cyclone forecast guidance for international aviation purposes.
Aviation Weather Warning (AWW)	The AWW is a National Weather Service (NWS) operational warning for weather with the potential to impact ground operations at some airports. Specific warning criteria are decided by local airport management and the supporting Weather Forecast Office and
Blowing Dust Potential Product	The Blowing Dust Potential graphical forecasts are designed to provide customers enhanced information on the potential for blowing dust (low, moderate, high, very high) to reduce visibilities below 1 statute mile during the next two days for areas in the Pendleton County Warning Area (CWA) prone to blowing dust (primarily the Columbia Basin and Blue Mountain Foothills).
California Fire Weather Web Page and Emergency Communications Center Dispatch Area (ECCDA) Forecast Summaries	For the past several year, land management and fire suppression agencies serving California have expressed a need for more generalized fire weather forecasts suitable for agency radio broadcasts from Emergency Communication Center Dispatch Area (ECCDA) offices. These twice-daily fire agency radio broadcasts are critical to relaying life saving information to fire fighting crews in the field. The ECCDA Forecast Summary is a methodology developed to fulfill this need.
CEILING HEIGHT AND SURFACE VISIBILITY INFORMATION ON THE MULTI-FORMAT FORECAST INFORMATION WEB PAGE	Advances in computer capabilities and web services technologies, as well as scientific advances in National Weather Service (NWS) software, have afforded an opportunity for the NWS to create ceiling height and surface visibility customer-based products and services. Information dissemination via the world wide web (www) allows customers to obtain higher resolution ceiling height and surface visibility information in a variety of formats on demand.
Center Weather Advisory (CWA)	The National Weather Service's (NWS) Center Weather Advisory (CWA) is an aviation warning for conditions meeting or approaching national in-flight advisory criteria ( ie AIRMET, SIGMET, or SIGMET for convection) as described in NWSI 10-811.
Central Region Multimedia Weather Briefing	The Multimedia Weather Briefing (MWB) is an Internet-accessible multimedia file that provides information concerning hazardous weather events within the service area of a Central Region office. The MWB offers a combined visual/auditory platform for supporting the planning activities of emergency response partners and other key customers, as well as the general public by conveying forecaster reasoning and confidence concerning impending hazardous weather events, upcoming or current drought conditions, climate and hydrologic outlooks, etc. These briefings also serve as a means of communicating probabilities and other uncertainty information which can be used in risk reduction assessments which may impact preparations or actions made by our partners and customers
CLIMAT Messages	The program for the international exchange of monthly mean data is called the "CLIMAT" program. The World Data Center for Meteorology, operated by the National Climatic Data Center, collects CLIMAT messages for publication under WMO sponsorship.
Climate Diagnostics Bulletin	The Climate Prediction Center (CPC) issues this monthly report on the status of the ocean-atmosphere climate system in the tropics and extratropics.
Coastal Waters Forecast Product	Provides marine weather information over the coastal waters - generally from the coastline out to between 20 and 60 miles from the coastline
Coastal/Lakeshore Flood Statement/Watch/Warning	The suite of products provides the public with statements, watches, and warnings of significant coastal/lakeshore flooding events.
Coded Marine Forecast	Provides an abbreviated version of the Coastal Waters Forecast
Collaborative Convective Forecast Product	The Collaborative Convective Forecast Product (CCFP) is a graphical representation of expected convective occurrence at 2-, 4-, and 6-hours after issuance time. Convection is defined as a polygon of at least 3,000 square miles with coverage of at least 25% with echoes of at least 40 dbZ composite reflectivity and at least one echo top of 25,000 feet or greater. CCFP covers the contiguous 48 states and portions of Ontario and Quebec south of 48 degrees north latitude.
Collaborative Surf Product	Surf is the number one weather-related killer in Hawaii. More lives are lost to surf-related accidents every year in Hawaii than any other weather event. Between 1993 to 1997, 238 ocean drownings occurred and 473 people were hospitalized for ocean-related spine injuries, with 77 directly caused by breaking waves. This is a serious safety problem. The National Weather Service (NWS) Weather Forecast Office (WFO) in Honolulu wants to better serve the citizens of Hawaii and visitors to the islands who may not be familiar with ocean conditions. An evolving Collaborative Nearshore Swell and Wind Forecast for Oahu and improved web page will incorporate educational tools and forecast explanations for all levels of ocean-going customers. The collaborative nearshore swell and wind forecast will be disseminated to the public via the world wide web and other NWS dissemination methods, including the Family of Services and NOAA Weather Wire.
Convective SIGMET	Convective Significant Meteorological Advisories (WST) is a text product describing the occurrence or expected occurrence of thunderstorms and related phenomena over the conterminous United States and adjacent coastal waters within 2 hours of issuance tim
Cook Inlet Sea Ice Analysis	Aids ships navigating the ice-covered waters of Cook Inlet and into the Port of Anchorage
Crop Moisture Index.	The Climate Prediction Center?s (CPC) and U.S. Department of Agriculture?s Joint Agricultural Weather Facility (JAWF) produces the Crop Moisture Index chart. The index indicates short term conditions.
Crosswind Calculator Aid	The Crosswind Decision Aid is color-coded according to the degree of impact the wind will have on various runways green indicating little or no impact; yellow indicating marginal impact; and red indicating significant impact. Each color level is triggered based on a user-defined wind direction and wind speed threshold. The product also includes a Wet Runway/IFR factor that effectively lowers the crosswind speed thresholds.
Current Icing Product (CIP) Severity	The Current Icing Product (CIP) is an automatically-generated index suitable for depicting areas of potentially hazardous airframe icing. This version of the CIP was updated in December 2006. The original CIP was implemented in 2002. The CIP algorithm is rooted in cloud physics principles that have been applied in the practical forecasting of icing probability and severity using research aircraft for nearly a decade. These principles and the resulting methods have also been applied to studies of icing incidents and accidents, as well as daily assessment of icing environments associated with icing pilot reports (PIREPs) over the United States and Canada at all times of the year.
D Region Absorption Prediction, Release 2	The D-Region Absorption Prediction, Release 2 (D-RAP2) product provides a suite of graphic and text information about the global High Frequency (HF) radio propagation conditions related to the state of the ionosphere’s D-region. D-RAP2 will be web based (http://www.swpc.noaa.gov/drap/index.html) and is an enhancement of the current D Region Absorption Prediction product (http://www.swpc.noaa.gov/dregion/index.html). D-RAP2 fills a void that exists in the current product by providing absorption information due to energetic proton precipitation at high latitudes. The web site provides: o A main page containing a global map of the highest HF frequencies affected by a 1dB attenuation, estimated recovery times, and links to subordinate pages. o Subordinate pages containing: north and south polar maps of the highest frequencies affected by a 10dB attenuation, and ASCII tabular values of total absorption at 10 MHz. o DRAP2 is updated every minute SWPC data and products are designed to provide accurate and real-time space weather information for the safety and benefit of our customers
Day 4-8 Severe Weather Outlook Guidance	The Day 4-8 Severe Weather Outlook product will consist of one graphic with an area (s) where severe weather is anticipated during the period. The severe weather threat areas will be depicted with a closed line and a label indicating the dates of the expected threat. A short 2-4 sentence paragraph will accompany the graphic to briefly describe the area depicted and occasionally describe the key reasons for the forecast. The forecast decision will be based on a variety of guidance information including the GFS, UKMET and ECMWF deterministic models, Medium Range (MREF) ensemble guidance and other statistical techniques.
Dry Lightning Potential Index	The Dry Lightning Potential Index (DLPI) is a graphical product produced by forecasters at WFO Las Vegas (VEF) using GFE/IFPS. Ratings of Dry Lightning potential (numbered from 0 through 6) for the next three days (today, tomorrow and the next day) are calculated using forecasts of boundary layer relative humidity and static stability. The DLPI is intended to be used as general guidance, primarily for planning purposes. The DLPI is intended as a seasonal product, issued from June through October, when active wildfires are most likely to occur in our forecast area
Eastern Pacific Hurricane Season Outlook	The Climate Prediction Center (CPC) issues the Hurricane Outlook for the eastern Pacific east of 140? West. No outlook, however, can give certainty as to whether or not a particular locality will be impacted by a tropical storm or hurricane in any given year. CPC issues this outlook in cooperation with the Tropical Prediction Center and NOAA?s Hurricane Research Division.
Eastern Region National Digital Forecast Database (NDFD) Graphic Forecast Displays	The National Oceanic and Atmospheric Administration (NOAA) National Weather Service (NWS) National Digital Forecast Database (NDFD) Graphic Forecast Displays (http://www.erh.noaa.gov/ndfd/graphical/sectors/ccc.php)where ccc is the WFO ID, are web-based presentations of digital forecast data originating from local Weather Forecast Office (WFO) digital databases. The data is displayed in a graphical form on a local scale.
El Ni?o/Southern Oscillation (ENSO) Diagnostic Discussion	The Climate Prediction Center (CPC) issues this monthly bulletin to provide insight into climate outlooks by reviewing the potential effects of the ENSO.
Enhanced Product National Implementation of the use of 1 inch Diameter Hail Criteria	The Severe Thunderstorm Warning (SVR) is an alphanumeric product providing short-fused warning in¬formation on hazardous conditions associated with thunderstorms which are expected to pose a threat to life and/or real property. This product is prepared by each National Weather Service (NWS) Weather Forecast Office (WFO) for their County Warning Area (CWA) of responsibility. In the Western Region (WR) and Central Region (CR) a Severe Thunderstorm Warning is currently being issued experimentally based on expectation of winds gusting to 58 mph or greater and/or hail of one (1) inch diameter or greater. Pending successful completion of this experiment, all NWS sites will issue Severe Thunderstorm Warnings based on these criteria.
Enhanced Winter Weather Guidance Product Suite	The Hydrometeorological Prediction Center (HPC) proposes to produce probability guidance for three specific snow/sleet accumulation thresholds per forecast day out to Day 3. HPC will also generate separate probability graphics for the exceedance of freezing rain. In addition a single graphic will depict both HPC forecast position of significant surface low pressure centers over the contiguous U.S. and conveyance of uncertainty of the forecast position. This will be depicted in 12 hour increments out to Day 3.
Ensemble Trace plot	Currently the National Weather Service (NWS) River Forecast Centers (RFCs) and Weather Field Offices (WFOs) produce a wide variety of river forecasts, which indicate current and future river conditions. The Ensemble Trace Plot prepared by the North Central River Forecast center (NCRFC) will be issued as a Web page graphic. The graphic will be for the NCRFC?s area of responsibility. It will be issued once a month (after the Climate Prediction center (CPC) outlooks are released at mid-month). It will cover the three month period after the issuance (for example, graphic released around May 26 will cover June-August period).
Expected Value plot	Description: Currently the National Weather Service River Forecast Centers and Weather Forecast Offices produce a wide variety of river forecasts to indicate current and future river conditions. The Expected Value graphic indicates timing and confidence levels for forecast stages for a selected time-frame, generally 90 days. This would provide an overall range of expected hydrologic conditions based on computed probabilities. The Expected Value Graphic will be issued as a web-based graphic for NCRFC?s area of responsibility. It will be issued once a month after the Climate Prediction Center outlooks are released at mid-month to cover the ensuing three month period (i.e. graphic issued around May 26 will cover the period from June-August).
Extreme Wind Warning (EWW)	The Extreme Wind Warning (EWW) is a text product prepared by the National Weather Service (NWS) Weather Forecast Offices (WFOs). The product warns of imminent or impending extreme winds associated with a landfalling hurricane.
Fire Weather Point Forecast Matrix	Land management agencies in Georgia and North Carolina have expressed a need for easily accessible tabular forecast data that is tailored toward fire behavior applications. A fire weather version of the Point Forecast Matrix (PFM) table fits this need well because it allows agency specialists to quickly run simple fire behavior models for planning purposes. The product is called the Fire Weather Point Forecast Matrix (PFW) and is generated routinely for the National Fire Danger Rating System (NFDRS) sites or other areas as determined by the users. This additional data will help land management agencies to ensure the safety of fire crews as well as better plan prescribed burns and other projects in a cost and resource effective manner. Also, land managers have expressed a need for better tools to predict and manage smoke dispersion. They have also requested that the NWS include an Atmospheric Dispersion Index (ADI) and Low Visibility Occurrence Risk Index (LVORI) in the PFW product. WFO Fire Weather PFW’s are generated for the Remote Automated Weather Station (RAWS)/NFDRS sites using an edited version of the standard PFM formatter. This formatter produces needed fire weather parameters from the local WFO’s Digital Forecast Database (DFD). PFW's can be generated for any grid point in a DFD based upon user request. The web delivery of the product for fire weather customers will include a disclaimer at the top of the page stating “This product is for planning and review purposes only and is not to be substituted for an official fire weather spot forecast. The data displayed are calculated from a 5.0 by 5.0 km digital database and only approximates weather conditions in highly varying terrain. Please relay any comments you have to your local NWS office. An example of the PFW can be seen at: http://www.srh.noaa.gov/productview.php?pil=GSPPFWGSP .
Fire Weather Threat 4-Panel Graphic	The Fire Weather Threat 4-Panel Graphic displays on the Internet several parameters that are critical for fire weather. In the upper left corner of the graphic is a ?Red Flag Risk Index? based on forecast minimum relative humidity (RH) and forecast maximum sustained wind. In the upper right hand corner is the Red Flag Risk Index for the current hour based on the GFE RH and wind observation database. In the lower left corner is the Haines Threat Index based on the forecast high level Haines Index and forecast minimum relative humidity. A second graphic is available based on the Forecast Haines Index and the current relative humidity from the GFE observation database. In the lower right hand panel three graphics reside. The probability of 25% or lower RH, 15% or lower RH, and the current observed RH.
Fire Weather Watch/Warning Display	The Fire Weather "Red Flag" Watch/Warning Display provides an HTML visual display of all fire weather "Red Flag" watch/warnings that are currently in effect across the western U.S.
Five Day Sea Ice Forecast	Forecast sea ice conditions over the waters surrounding Alaska valid at the day five period.
Flash Flood Potential Index	The Flash Flood Potential Index (FFPI) is a text product produced by forecasters at the WFO SGX and WFO LOX using objective forecasts techniques based upon model data. Ratings of flash flood potential (numbers 0 through 4) for the next two days (today and tomorrow or tomorrow and the next day - depending on the issuance time) are calculated using precipitable water, winds aloft (700 mb), and forecaster knowledge of other atmospheric factors such as stability and atmospheric capping. The FFPI is issued during flash flood season from June 1st through September 30th.
Flash Flood Potential Rating	The Flash Flood Potential Rating (FFPR) is both a text and graphical product produced by forecasters at the WFO SLC using GFE/IFPS. Ratings of flash flood potential (numbers 1 through 6) for the next two days (today and tomorrow or tomorrow and the next
Forecast Icing Potential (FIP)	The Forecast Icing Potential (FIP) product is an automatically-generated forecast index of icing potential developed by the In-Flight Icing Product Development Team sponsored by the Federal Aviation Administration?s Aviation Weather Research Program.
GIS Compatible NDFD Data on the WFO Internet Page	NOAAs National Weather Service (NWS) Weather Forecast Offices (WFOs) produce graphical forecasts for the National Digital Forecast Database (NDFD). The NDFD forecasts are available to the public in GRIB2 format, a World Meteorological Organization standard. Unfortunately, this format is not widely used outside of the meteorological community. In this project GRIB2 files from the MFR county warning and forecast area are converted to shapefile format and posted to the internet webpage.
Global Tropics Hazards/ Benefits Assessment	The Global Tropics Hazards/Benefits Assessment, issued by the Climate Prediction Center (CPC), provides an outlook for the upcoming week 1 and week 2 time periods for areas expecting extensive and persistent enhanced / suppressed rainfall and regions where conditions are especially favorable / unfavorable for tropical cyclogenesis.
GovDelivery Southeast River Forecast Center (SERFC) Subscription Service	GovDelivery is a subscription service that serves as an efficient means of notifying partners of the issuance of critical SERFC products. GovDelivery specializes in the unique distribution of government information, and currently has contracts in place with many other state and federal agencies, including FEMA.
Graphical - Weather Story of the Day	The Graphical "Weather Story of the Day" is a graphical representation (product) which depicts the most important weather feature in the forecast area of responsibility of individual NWS Weather Forecast Offices (WFO). The "Weather Story of the Day" is not time dependent. That is, the product depicts the most significant weather feature through the 7-day forecast period. A graphical user interface allows the forecaster to include a brief text, a few sentences in length, describing the "Weather Story of the Day" graphical product.
Graphical Aviation Time Series	The National Weather Service's (NWS) Graphical Aviation Time Series (GATS) is an optional product displaying a time series of various weather elements important to aviation.  The weather elements displayed in time series format include, but may not be restricted to, temperature, dew point, relative humidity, heat index, wind chill, altimeter setting, wind direction, wind speed, wind gust, ceiling height, visibility, and precipitation.   These time-series graphs are created by downloading 5-minute ASOS observations once each hour, with a 24-hour floating window of data available.
Graphical Forecast Table	The National Weather Service's (NWS) Graphical Forecast Table provides a graphical representation of digital/tabular forecasts of maximum temperature, minimum temperature, probability of precipitation, 3- hourly temperatures,dewpoint temperatures, relative humidity, sky condition, wind direction and speed,obstruction to visibility, and precipitation type.
Graphical Hazardous Weather Outlook	The Graphical Hazardous Weather Outlook will display graphically on the internet the weather hazards for the WFO County Warning Area (CWA) for 24 hour periods beginning with the current day and continuing through day 7. It is intended to supplement the Hazardous Weather Outlook text product.
Graphical Local Hazardous Weather Outlook	The National Weather Service has implemented a daily Hazardous Weather Outlook (HWO) text product. Its main focus is identifying all potential weather hazards during the next 24 hour time frame. The Local Hazardous Weather page ismeant to build off of the HWO text product, providing a more detailed aerial graphical depiction of the threat type and coverage.
Graphical Milepost Forecast	The Graphical Milepost Forecast allows the user to check the forecast in either meteogram or table format for the next 24 hours at mileposts along all major highways across the Pendleton CWA.
Graphical Severe Weather Warnings	The Graphical Severe Weather Warning (GSWW) combines the polygon generated by WARNGEN for a TOR or SVR issuance with a current radar reflectivity image, high-detail GIS map backgrounds showing roads, cities, and terrain, and a summary of demographic information for the population at risk. The GSWW also contains the text of the warning and any subsequent SVSs issued for that warning....
Graphical Short Term Forecast Product GraphiCast	The Graphical Short Term Forecast Product (GraphiCast) is a graphical representation of the short term weather forecast (0 to 6 hours) in the forecast area of responsibility of individual NWS Weather Forecast Offices (WFO). It depicts current radar, satellite, or observation imagery with graphical and text annotations showing forecast weather conditions in the next several hours. In rapidly developing situations, it is updated at least hourly.
Graphical Tropical Weather Outlook	This product is a visiual companion to the test TWO. The text TWO is ans existing product that describes areas of disturbed weather and their potential for tropical cyclone formation. The graphical TWO indicates the current location of the weather systems by encircling them and indicating their potential for development with a genesis probability forecast.
Graphical Turbulence Guidance	The Graphical Turbulence Guidance (GTG) is an automatically generated turbulence product that predicts the location and intensity of turbulence over the continental United States (CONUS).
Grassland Fire Danger Index for the Kansas Plains	The Grassland Fire Danger Index (GFDI) product/service is a text and graphical representation of the Grassland Fire Danger Index values that correspond to the likelihood that fires will get out of control. Three-hourly GFDI values will be represented, giving customers a clear indication of not only the index value but also the time and duration of the values at a specific grid location
Great Lakes Break-up Outlook Product	Issued in March. Provides guidance on when any ice remaining on the Great Lakes will dissipate.
Great Lakes Ice Outlook	Issued during winter. Provides guidance on expected ice growth and decay on the Great Lakes.
Great Lakes Marine Alert Message	Alerts users of forecast storm or hurricane force winds on any of the Great Lakes.
Great Lakes Storm Summary	Provides information on the occurrence of storm or hurricane force winds on any of the Great Lakes.
Gridded Day 2 and Day 3 Excessive Precipitation Forecast	The Gridded Day 2 and Day 3 Excessive Precipitation Forecasts are display the probability of precipitation amounts exceeding the flash flood guidance values issued by the River Forecast Centers at the time of product issuance. The product displays areas for the continental United States where the probability of precipitation amounts exceeding flash flood guidance is slight (defined as threat in the range 5 percent to less than 10 percent), moderate (defined as threat from 10 percent to less than 15 percent), and high (defined as threat 15 percent or greater). The River Forecast Centers do not currently issue flash flood guidance for days 2 and 3 so at this time the product will be based on the day 1 flash flood guidance.
Gridded Graphical Hazardous Weather Outlook	The Melbourne Weather Forecast Office (WFO) Gridded Graphical Hazardous Weather Outlook (gHWO) complements the text Hazardous Weather Outlook (HWO) by providing a graphical depiction of threat levels for the following hazards: lightning, tornado, wind, hail, (flash) flood, excessive heat, excessive cold, high wind, dense fog/smoke, fire weather, rip current, coastal flood, waterspout, marine wind/sea, and marine thunderstorm gust. The threat impacts are specific to the WFO county warning area (CWA) and marine area of responsibility (MAOR), and depict the geographical distribution and level of threat of each hazard.
Gridded Weather Input for Fire Area Simulation Model (FARSITE)	FARSITE is a deterministic model developed and used by land management agencies. FARSITE simulates the spatial and temporal spread and behavior of fires under conditions of heterogeneous terrain, fuels, and weather. Required FARSITE weather input consists of maximum and minimum relative humidity, maximum and minimum temperature, daily precipitation, wind speed and direction and cloud cover. FARSITE is an important tool that fire agencies use to help keep firefighters safe. Pursuant to the NWS mission of saving lives and property, NOAA/NWS forecasters have been manually supplying FARSITE weather input to fire managers for a number of years.
Hawaiian One-Month and Three-Month Outlooks and Discussion.	The Climate Prediction Center (CPC) issues a one-month and a series of thirteen three-month temperature and precipitation outlooks for selected cities in Hawaii and an accompanying prognostic discussion.
Hazard Grids in the National Digital Forecast Database	The NWS provides access to operational and experimental gridded forecasts of weather elements (e.g., maximum temperature, sky cover)through the NDFD. The NDFD contains a seamless mosaic of digital forecasts from NWS field offices working in collaboration with the National Centers for Environmental Prediction (NCEP). The hazard grids are prepared by all Weather Forecast Offices (WFO) and are available via the NDFD. Hazard grids are valid for more than two hours. The hazard grids depict all active long duration watch, warning and advisory hazards issued by NWS WFOs . The hazard grids include long duration coastal, marine, nonprecipitation, tropical and winter weather hazards. It also includes convective and some hydrological watches. It does not include the following short duration warnings: Tornado Warning, Severe Thunderstorm Warning, Extreme Wind Warning, Flash Flood Warning, and Special Marine Warning. It does not include the following Long Duration Watches and Warnings issued in RiverPro and WarnGen:Flood Watch for forecast points, Areal Flood Warnings and Flood Warnings for forecast points. In addition, it initially will not include Gale Warnings, Storm Warnings and Hurricane Force Wind Warnings issued in the Offshore and High Seas forecast by OPC and TAFB. The NDFD Hazard grid definition is defined as,a weather or hydrologic hazardous event issued for the protection of life and property and the enhancement of the national economy. The Hazards grid will be in experimental status in the NWS Alaska Region until further notice.
High Seas Forecast	Describes potentially hazardous weather across large areas of the open ocean.
High Surf Advisory	Provides notification of potentially life threatening surf conditions
HotSeat Warning Simulator	HotSeat is a web-based warning simulation tool. It uses archived WSR-88D data from actual events along with severe weather reports and damage survey photographs in a displaced real-time (DRT) mode to approximate the feel of issuing severe weather warnings in the National Weather Service. Upon completion of each event, the participant receives a score indicating his/her success in the simulation.
Hours of Sunshine and Percent of Possible Sunshine Products	The Hours of Sunshine and Percent of Possible Sunshine Products will be graphical displays on the Internet of the number of hours of sunshine expected and the percent of total possible sunshine expected across the (PDT) County Warning Area (CWA). The products will be updated with each major Zone Forecast issuance. At 4 AM local Pacific Time, the forecasts will be for today and tomorrow. At 3 PM local Pacific Time, the forecasts will be for tomorrow and the day after tomorrow.
Hurricane/Typhoon Local Statement (HLS)	This is an update to an existing PDD. The PDD was amended to include an Overview Block. The HLS is an alphanumeric product alerting the public of present and anticipated local tropical cyclone affects. Coastal and selected inland Weather Forecast Offices issue HLSs when their County Warning Area and adjacent coastal waters is affected by a tropical cyclone watch/warning or evacuation orders.
IFPS Digital Forecast Page	The IFPS Digital Forecast Page provides an interface for the public to access weather information from the NWS gridded forecast (IFPS) database. The gridded forecast is maintained 24/7 by all 24 Western Region Forecast Offices as part of the national NWS IFPS program.
Lightning Potential Index	The Lightning Potential Index (LPI) is a web graphic that displays an index of lightning potential for various parts of the day, with a second day for planning purposes. This product will be issued routinely in the morning and updated as necessary.
Low Flow Probabilistic forecast	Currently the National Weather Service (NWS) River Forecast Centers (RFCs) and Weather Field Offices (WFOs) produce a wide variety of river forecasts, which indicate current and future river conditions. The Low Flow Probabilistic Forecasts prepared by the North Central River Forecast Center (NCRFC) will be issued as Web page graphics. The graphics will be for the NCRFCs area of responsibility. They will be issued once a month (after the Climate Prediction Center (CPC) outlooks are released at mid-month). They will cover the three month period after the issuance (for example, graphics released around May 26 will cover June-August period).
Marine Forecast Matrix	The National Weather Service (NWS) Marine Forecast Matrix (MFM) provides a tabular forecast of wind direction and speed, swell direction and height, wind wave height, significant wave height, cloud cover, probability of precipitation, and areal precipitation coverage.
Marine Weather Discussion (MWD)	Plain language free text discussion of computer model trends which focuses on expected wind and sea conditions. The MWD is used as a coordination vehicle among the national centers and coastal Weather Forecast Offices.
Marine Weather Message	The Marine Weather Warning (MWW) product is a text bulletin intended to better inform mariners of adverse nonprecipitation conditions. It will also provide consistency of the National Weather Service (NWS) Coastal Weather Forecasts (CWFs), Great Lakes Open Lakes Forecasts (GLFs) and Great Lakes near shore forecasts (NSHs) with other NWS programs (winter weather, hydrologic, nonprecipitation and coastal hazards).
Marine Weather Statement (MWS)	Plain language free text discussion of potentially hazardous warning conditions associated with non-severe thunderstorms and/or waterspouts issued on an event driven basis from WFOs. The product is also issued to advise of potential hazardous conditions with wind, waves, visibility, low water levels, hazardous materials spills, volcanic ash, and ice.
Maximum Tropical Cyclone Wind Speed Probability Table	The WSP shows the probability that maximum 1-minute wind speed forecast for the tropical cyclone will be within one of seven intensity ranges/storm classifications through 72 hours. The maximum 1-minute wind speed forecasts correspond to the wind speed forecasts in the Tropical Cyclone Forecast/Advisories (TCM) product. The probabilities are based on National Hurricane Center (NHC) forecasts from 1988-1997. NHC issues this experimental product for tropical cyclones in the Atlantic and Eastern Pacific basins. This experimental product is also issued for subtropical storms.
Meteorological Impact Statement (MIS)	The National Weather Service's (NWS) Meteorological Impact Statement (MIS) is a unscheduled flow control and flight operations planning forecast.  The MIS is valid 2-12 hours after issuance time and details weather conditions expected to adversely impact
Minneapolis TRACON Collaborative Convective Forecast Product	The Minneapolis TRACON forecast product/service will be a collaborative effort by personnel of WFO Minneapolis, CWSU Minneapolis and initially, Northwest Airlines to produce a forecast of thunderstorm and/or lightning activity within a radius of 100 nautical miles of the center of the Minneapolis airport.
Modeled Soil Saturation Index	In meeting its hydrologic forecast responsibilities, the National Weather Service (NWS) Missouri Basin River Forecast Center (MBRFC) simulates soil moisture across the Missouri River basin in real-time. The Modeled Saturation Index (MSI) quantifies the relative degree of tension water saturation present within the soil column, and is calculated on a sub-basin level. The primary product is a graphical display of the MSI across the Missouri River basin. Soil moisture directly impacts runoff potential, water resource management, debris flow formation, and agricultural productivity. A correlation exists between soil moisture and lower level atmospheric conditions. However, observed real-time soil moisture data is sparse and difficult to spatially interpolate. The production of the MSI graphic will enable the user to visualize the real-time relative degree of tension water saturation present geographically across the Missouri River basin
MULTI-FORMAT FORECAST INFORMATION WEB PAGE	Advances in computer capabilities and web services technologies, as well as scientific advances in National Weather Service (NWS) software, have afforded an opportunity for NWS to create customer-based products and services.
MULTI-FORMAT MARINE FORECAST INFORMATION WEB PAGE	Advances in computer capabilities and web services technologies, as well as scientific advances in National Weather Service (NWS) software, have afforded an opportunity for NWS to create customer-based marine products and services. Information dissemination via the World Wide Web (www) allows customers to obtain higher resolution marine forecast information in a variety of formats on demand.
Multimedia Weather Briefing	The Multimedia Weather Briefing is an Internet-accessible multimedia file that provides information concerning hazardous weather events within the service area of a Southern Region office. The briefing provides a medium for supporting the planning activities of emergency response partners and customers by conveying (both aurally and visually, in non-technical terms) the forecaster's reasoning and confidence concerning upcoming hazardous weather events.
National Air Quality forecast System (AQFS) Ozone (03) forecast	A web-based presentation of gridded forecast O3 guidance originating from the Environmental Modeling Center (EMC) of the National Environmental Prediction (NCEP). The ozone data is displayed for a domain covering the northeast US for 1-hour and 8-hour averages.
National Air Quality Forecast System (AQFS) Smoke Forecast Graphic Display	The National Weather Service?s National Air Quality Forecast System (AQFS) Wildland Fire Smoke Forecast (WFSF) Experimental Graphic Display is a web-based presentation of gridded forecast smoke dispersion guidance produced by NOAA's Air Resources Laboratory and Environmental Modeling Center (EMC) of the National Environmental Prediction (NCEP)and using the HYSPLIT dispersion model. The dispersion model is preconfigured to run over the entire country once-a-day using the 0600 UTC NAM meteorological forecast. Hourly average output maps of primary PM2.5 air concentration are produced using the actual fire locations from the previous day obtained from NOAA?s NESDIS Hazard Mapping System. The dispersion simulation consists of two parts: 1) a 24 h analysis simulation run for the previous day, and 2) a 48 h forecast simulation, which assumes that yesterday's fires will continue to burn for the next two days. The smoke particle positions at the end of each analysis period are used to initialize the next day's analysis simulation.
National Convective Weather Forecast	The National Convective Weather Forecast (NCWF) is an automatically generated convective product that provides current convective hazards and 1 hour extrapolation forecasts of thunderstorm hazard locations.
National Digital Forecast Database (NDFD) Climate Outlook Probability Elements	The National Digital Forecast Database (NDFD) contains a seamless mosaic of digital weather forecasts from National Weather Service (NWS) field offices and the National Centers for Environmental Prediction (NCEP). The Climate Prediction Center (CPC) is the NWS center of expertise for climate outlooks covering valid periods of one week, one month, and three-months, with lead times (i.e. advance issuance before the beginning of the valid period) from a zero lead to 12.5 months of lead time. The following Climate Outlooks by the CPC are available in the NDFD in operational status. The outlooks are probabilistic (expressed in percent). Probability of 8- to 14-Day Average Temperature Above Normal Probability of 8- to 14-Day Average Temperature Below Normal Probability of 8- to 14-Day Total Precipitation Above Median Probability of 8- to 14-Day Total Precipitation Below Median Probability of One-month Average Temperature Above Normal Probability of One-month Average Temperature Below Normal Probability of One-month Total Precipitation Above Median Probability of One-month Total Precipitation Below Median Probability of Three-month Average Temperature Above Normal Probability of Three-month Average Temperature Below Normal Probability of Three-month Total Precipitation Above Median Probability of Three-month Total Precipitation Below Median All of these elements are available for the contiguous U.S. (CONUS), the 16 pre-defined NDFD CONUS subsectors and Alaska. These probabilistic outlooks pertain to the average temperature and total precipitation for the entire valid period and not to the variability within it; these outlooks will not help people planning events for specific dates or sub-periods.
National Digital Forecast Database (NDFD) Convective Outlook Hazard Probability Elements	As of April 30, 2009, the following Convective Outlook Hazard Probability elements prepared by the SPC are now available in the NDFD in operational status Categorical Convective Outlook for today (Day 1), tomorrow (Day 2), and the day following (Day 3) Probability of Tornadoes (Day 1) Probability of Hail (Day 1) Probability of Damaging Thunderstorm Winds (Day 1) Probability of Extreme Tornadoes (Day 1) Probability of Extreme Hail (Day 1) Probability of Extreme Thunderstorm Winds (Day 1) Total Probability of Severe Thunderstorms (Day 2 and Day 3) Total Probability of Extreme Severe Thunderstorms (Day 2 and Day 3) All of these elements are currently only available for the contiguous U.S. (CONUS) and the 16 pre-defined NDFD CONUS subsectors. The Convective Outlook Probabilities are issued for a convective day from 12 UTC to 12 UTC. Day 1 Outlooks are valid from 12 UTC on Day 1 (or, if issued after 12 UTC from the issuance time) to 12 UTC on Day 2. The Day 2 products are valid from 12 UTC on Day 2 to 12 UTC on Day 3. The Day 3 products are valid from 12 UTC on Day 3 to 12 UTC on Day 4. The Categorical Convective Outlook elements specify the perceived level of threat via the descriptive wording Slight, Moderate, and High Risk. However, these outlooks, do not display the forecaster’s expectations of the individual severe weather hazards (large hail,damaging winds, and tornadoes) The individual probabilistic elements further express forecaster uncertainty of the individual severe weather hazards through the use of probabilities (i.e., percent likelihood of occurrence). In the Day 1 period, forecaster expectations of large hail, damaging winds, and tornadoes are explicitly conveyed in separate forecasts. By producing forecasts of each hazard individually, users who are sensitive to one particular threat (e.g., car dealers and large hail) can make more informed decisions.
National Digital Forecast Database (NDFD) Day 4 to 8 Convective Outlook Elements	The NWS provides access to operational and experimental gridded forecasts of weather elements (e.g., maximum temperature, sky cover) through the National Digital Forecast Database (NDFD). The NDFD contains a seamless mosaic of digital forecasts from NWS field offices and the National Centers for Environmental Prediction (NCEP). NCEP's Storm Prediction Center (SPC) operationally produces detailed outlooks and probability products for severe convective weather for Days 1, 2, and 3, and a more general Day 4 to 8 convective outlook (available as text and graphic products at http://www.spc.noaa.gov/products/exper/day4-8/). This element is a forecast for organized severe thunderstorms over the contiguous United States. A severe weather area depicted in the day 4 to 8 period indicates a 30% or higher probability for severe thunderstorms within 25 miles of any point
National Digital Forecast Database (NDFD) Graphic Forecast Displays	The National Oceanic and Atmospheric Administration (NOAA) National Weather Service (NWS) National Digital Forecast Database (NDFD) Graphic Forecast Displays (http://weather.gov/forecasts/graphical/sectors/index.php) are web-based presentations of digital forecast data originating from local Weather Forecast Office (WFO) digital databases and the NDFD server. The data are displayed in a mosaic form on national and regional scales. Local scale products are not covered under this Product Description Document (PDD). For more information on the NDFD, please refer to the NDFD Information web site at the following URL: http://www.nws.noaa.gov/ndfd/index.htm.
National Digital Forecast Database (NDFD) Gridded Data	Under statute, the National Oceanic and Atmospheric Administration (NOAA) National Weather Service (NWS) is charged to collect data on climate, water, and weather, provide forecasts and warnings of severe weather in order to protect life and property, and create and disseminate forecasts and other weather information for the benefit of a wide range of weather sensitive businesses and activities. By capitalizing on rapid advances in science and technology and infusing these advances into its operations, the NWS has taken steps to proactively respond to ever changing and growing demands of its customers and partners. The 2003 Fair Weather report, produced by the National Research Council, recommended making NWS data and products available in an Internet accessible digital form. The specific recommendation is as follows: ?Information held in digital databases should be based on widely recognized standards, formats, and metadata descriptions to ensure that data from different observing platforms, databases, and models can be integrated and used by all interested parties in the weather and climate enterprise.? The Internet is now a principal means of communicating NWS forecasts.
National Digital Forecast Database Extensible Markup Language	National Digital Forecast Database (NDFD) Extensible Markup Language (XML) is a service providing the public, government agencies, and commercial enterprises with user selected components for point locations of the National Weather Service?s (NWS) data embedded in XML elements. NDFD XML provides users the ability, using a machine-to-machine paradigm, to retrieve the XML-wrapped data via the Internet. This web service is provided using the SOAP protocol....
National Digital Forecast Database User Defined GRIB2 files	Gridded forecasts requested by a user from the National Digital Forecast Database (NDFD) are encoded into GRIB2 and transmitted to that user via the World Wide Web (WWW). A user can be any member of the public, a government agency, or a commercial enterprise. The user chooses one of the weather elements that is available in the NDFD and specifies the bounding latitudes and longitudes of the grid that will be transmitted via a Web CGI interface. GRIB2 is data encoding standard described by the World Meteorological Organization in its document FM92 GRIB, Edition 2, Code Form and Tables....
National Drought Summary	NOAA's Climate Prediction Center and National Climatic Data center (NCDC), the U.S. Department of Agriculture, and the National Drought Mitigation Center (NDMC) jointly issues this narrative summarizing drought conditions with a look ahead.
NATIONAL MULTI-SENSOR PRECIPITATION ESTIMATES WEB-BASED SERVICE	These Quantitative Precipitation Estimates (QPE) Graphics are representations of rainfall that has occurred for a specific length of time. Currently, each RFC prepares its QPE graphics using different colors, precipitation thresholds, and geographic projections. By producing these graphics centrally, it will enable the public to compare data across the CONUS and Puerto Rico. Parameter-Elevation Regressions on Independent Slopes Model (PRISM) climate data from a cooperative venture between Oregon State University and the United States Department of Agriculture-Natural Resources Conservation Service provides a grid format of normal precipitation.
National Snow Analysis	The National Operational Hydrologic Remote Sensing Center (NOHRSC) is a branch in the Office of Climate, Water, and Weather Services in the National Weather Services (NWS) and is collocated with the NWS North Central River Forecast Center and the Weather Forecast Office in Chanhassen, Minnesota. The NOHRSC produces a daily National Snow Analysis (NSA) and distributes a variety of snow summaries and data sets derived from both observed and modeled hydrometeorological data. The NOHRSC NSA provides daily, comprehensive snow information for the coterminous U.S. and is accessed at: www.nohrsc.nws.gov. The NSA is based on modeled snowpack characteristics that are updated using all operationally available ground-based, airborne, and satellite observations of snow water equivalent, snow depth, and snow cover....
NAVTEX Forecast	The NAVigational TEXt (NAVTEX) product is issued exclusively for the U.S. Coast Guard NAVTEX radio-teletype transmitters and receipt of those mariners equipped with NAVTEX receivers. The product contains marine forecasts and warnings.
NDFD CLIMATE	NDFD Climate is a computer application that creates images of forecast and climatological parameters for the continental U.S. from two different digital data sets. The first data set is the NDFD (National Digital Forecast Database) weather forecast grids produced by the NOAA National Weather Service (NWS) and the second data set is PRISM (Parameter-elevation Regressions on Independent Slopes Model), an expert system that uses point climatological temperature data and a digital elevation model (DEM) to generate gridded estimates of climate parameters. The NOAA National Weather Service (NWS) National Digital Forecast Database (NDFD) contains digital forecast grids of sensible weather elements such as temperature, wind, and precipitation in a mosaic from collaborating field offices across the U.S. for forecasts out to seven days. Daily digital climatology grids of maximum and minimum temperature are created using Parameter-elevation Regressions on Independent Slopes Model (PRISM; Daly et al. 1994) method. NDFDClimate grids produced include: PRISM derived normal daily maximum and minimum temperatures, NDFD derived forecasted heating and cooling degree days through day 6, NDFD forecasted daily minimum and maximum temperature anomalies derived from PRISM daily climate fields through day six, NDFD derived five day total of forecast heating and cooling degree days, NDFD 60 hour total of liquid equivalent QPF, NDFD forecasted number of hours the temperature is above or below a defined temperature through day three, NDFD forecasted 24- and 48-hour forecast temperature changes from forecast issue time.
NDFD Quantitative Precipitation Forecast (QPF) for Hawaii	On November 1, 2006, the National Oceanic and Atmospheric Administration (NOAA) National Weather Service (NWS) will introduce Quantitative Precipitation Forecast (QPF) for Hawaii to the National Digital Forecast Database (NDFD) as an experimental element. QPF is already available in NDFD on an experimental basis for the conterminous U.S. (CONUS), the 16 pre-defined NDFD CONUS subsectors, Puerto Rico, and the U.S. Virgin Islands.
Nearshore Forecast (NSH)	The NSH describes forecast conditions including any event-driven marine hazards occurring or expected to occur over the Great Lakes nearshore waters for a 48 hour forecast period.
Nephanalysis	A graphical product routinely prepared for the Central and Eastern Pacific Ocean Basin that provides a depiction of significant cloud features, a description of the cloud types, and their areal coverage.
NOAA Weather Radio Podcasts	The NWS is responsible for making its weather, water and climate information widely available to taxpayers using commonly accepted standards and technologies. Currently, the NWS provides only limited audio broadcasts of their NOAA Weather Radio All Hazards (NWR) via the Internet. The Voice Improvement Program (VIP) software on the NWR is able to convert the text transmitted to the Console Replacement System (CRS) into MPEG audio Layer-3 (MP3) files. Southern Region NWS offices are making these MP3 files available on the Internet as podcasts. Podcasting allows for publishing of audio programs to the internet and subsequent downloading of these programs to a personal computer or MP3 device. Users subscribe to the NWR podcast by using a freely available podcasting application that downloads the MP3 file automatically using an RSS (Really Simple Syndication) feed. Podcasting applications typically check for new content (new MP3 files) at user defined intervals. Once downloaded, the user can then listen to the podcast at his/her leisure (versus a radio broadcast of NWR).
Non Technical Format of the Winter Low Tracks Graphic	The National Weather Service (NWS) National Centers for Environmental Prediction (NCEP) Hydrometeorological Prediction Center (HPC) Winter Weather Desk (WWD) issues a forecast of significant surface low positions twice daily. This graphic is known as the Winter Low Tracks Graphic. The Winter Low Tracks Graphic depicts over the contiguous U.S. (CONUS) the HPC forecast position of significant surface lows in 12 hour increments out to 72 hours. Uncertainty in the HPC forecast low position is depicted by including the forecast low position from model guidance available to the HPC forecaster
NWS Current Observations Using RSS and XML Based Formats	Provide current observations in two Internet based formats. Each format provides a channel for users to quickly access specific products. Products are organized by ASOS station ID. Two data exchange formats using Extensible Markup Language (XML) are provided for customers and partners who wish either display selected parts of the products or provide a display of the products to other customers. The product homepage can be accessed at: http://weather.gov/data/current_obs/
NWS Warnings Using Geographic Information Systems	NWS-issued short-fused warnings are added to a real-time database and Geographic Information System (GIS) shapefiles are generated from this database. In addition, an updated graphic is displayed that displays the current status of warnings.
NWS web services via wireless technologies	NWS is responsible to make its weather, water and climate information widely availableto taxpayers using commonly accepted standards and technologies. One of the most widely accepted, available and cost effective means of accomplishing this objective is the use of web services via the internet, and NWS has implemented a corporate-wide HTTP-based web service. This service has allowed users instant access to current NWS information via industry standard web browsers and internet connections. A rapidly evolving technology in the United States today is the ability to access internet content via wireless devices such as Personal Digital Assistants (PDA) and cell phones.
Offshore Waters Forecast	An alphanumeric product routinely prepared for the Offshore Marine Zones in the Atlantic and Pacific Ocean Basins that provides forecasts of wind, waves, visibility, icing, and significant weather out to the five day forecast period.
One-Month Climate Outlook (Contiguous U.S. and Alaska).	The Climate Prediction Center (CPC) issues a probabilistic one-month temperature and precipitation outlook. (Revised - Version 3)
One-Month Outlook Discussion (Contiguous U.S. and Alaska).	A technical discussion of the meteorological and climatological basis for the one-month outlooks. (Revised - Version 3)
Open Lakes Forecast	An alphanumeric product prepared by NWS Offices with Marine responsibility over the Great Lakes. This is a routinely issued product that describes forecast conditions and event-driven marine hazards expected over the five day forecast period. A coded fo
Operational Day 5 Tropical Cyclone Forecast	The approval of this PDD authorizes the public dissemination of an operational Day 5 tropical cyclone forecast. Two products will require modification if Day 5 forecasts are approved:
Palmer Drought Severity Index.	The Climate Prediction Center?s (CPC) and U.S. Department of Agriculture?s Joint Agricultural Weather Facility (JAWF) produces the Palmer Drought Severity Index chart. The index indicates long term conditions.
PHX Drought Data Page	The PHX Drought Data Page was developed in response to a request from the Arizona Governors Drought Task Force. The product provides a single web based interface for users to more easily access precipitation data from the state for purposes of "decision making" as related to the ongoing drought in Arizona.
Post Tropical Cyclone Report (PSH)	The PSH is an alphanumeric product summarizing the meteorological parameters observed within a Weather Forecast Offices County Warning Area after a tropical cyclone event.
Precipitation Frequency Data Server	NWS precipitation frequency estimates have traditionally been delivered in the form of Weather Bureau Technical Papers and Memoranda as well as NOAA Atlases, all hard copy documents. With the advent of the World Wide Web, these documents have been scanned and made available via web pages. The National Weather Service specifically developed the Precipitation Frequency Data Server as the primary web portal to precipitation frequency estimates and associated information (Parzybok and Yekta, 2003). Recent updates to NWS precipitation frequency are being delivered entirely in digital rather than hard copy form in order to make the estimates more widely available to the public and to provide the data in a broader and more accessible range of formats.
Precipitation Potential Index	The Precipitation Potential Index will display graphically on the internet. The graphic is a means to show forecaster confidence as to the location of precipitation at each hour across the CWA. It is intended to supplement the 12 hour POP and weather grids.
Probabilistic Quantitative Precipitation Forecasts	NOAA's Strategic Plan states that we are to "Improve the reliability, lead-time, and effectiveness of weather and water information and services that predict changes in environmental conditions." To support that effort, The National Weather Service Strategic Plan for 2005 to 2010: Working Together to Save Lives, establishes a mission goal to develop new capabilities and move into a new direction of forecasts... and expand beyond traditional weather and water products. In response to the NOAA and NWS goals, the Weather Forecast Office in Tulsa, Oklahoma (TSA) has developed a method to provide probabilistic quantitative precipitation forecasts on a routine basis, in the form of probability of exceedance (POE) forecasts. This method will be used at several Weather Service Forecast Offices (WFOs) in the Southern Region. These POEs will provide our clients and customers with more detailed precipitation forecasts that they can use in their decision-making processes.
Probability of Exceedence Outlook for Center Probability Distribution (50 percent)	The Climate Prediction Center (CPC) issues a series of thirteen three-month graphical outlooks for the 50 percent probability of exceedence (or center probability distribution) for temperature and precipitation across the contiguous U.S.
Probability of Freezing Temperatures	The Probability of Freezing Temperatures product will be a graphical display on the internet of the probability (in percent) that overnight low temperatures will fall to freezing or below across the (PDT) County Warning Area (CWA) for the ?tonight? and ?tomorrow night? time periods. It will be updated as necessary, but at a minimum with each major Zone Forecast issuance at 3 pm and 4 am local Pacific time. The product will be issued seasonally in the fall from September 15th until November 30th and in the Spring from March 15th until May 31st.
Probability of Meeting or Exceeding Specific Temperature Thresholds	The Probability of Meeting or Exceeding Specific Temperature Thresholds (e.g. Freezing or 100 degrees) is a graphical display on the Internet of the probability (in percent) that temperatures will either rise above or fall below the desired threshold in a given county Warning Area (CWA) for the Day 1 and Day 2 forecast time periods. It will be updated as necessary, but will be issued at a minimum with each major Zone Forecast package at 3 pm and 4 am local Pacific time.
Real Time US Total Electron Content Vertical and Slant	The US Total Electron Content (US-TEC) product is designed to specify TEC over the Continental US (CONUS) in near real time. The product uses a Kalman Filter data assimilation technique driven by data from ground-based Global Positioning System (GPS) dual frequency receivers. The primary data stream comes from the Maritime and Nationwide Differential GPS (M/NDGPS) real time network of stations operated by the US Coast Guard (USCG). As of Oct 2004 there were about 60 M/NDGPS stations ingested into the model. This number has been gradually increasing and will be augmented by Federal Aviation Administration/Wide Area Augmentation System (FAA/WAAS) data, and stations operated by the Forecast System Laboratory (FSL). This product has evolved from collaboration among Space Environment Center (SEC), National Geodetic Survey (NGS), National Geophysical Data Center (NGDC), and FSL.
Red Flag Potential Index	The Red Flag Potential Index (RFPI) is a graphical product produced by forecasters at WFO Las Vegas (VEF) using GFE/IFPS. Ratings of Red Flag potential (numbers 1 through 4) for the next three days (today, tomorrow and the next day) are calculated using forecasts of relative humidity and prevailing 20-ft, 10-minute average surface wind, along with forecaster knowledge of other factors such as critical fire conditions and the existence of active wildfires. The RFPI is intended to be used as general guidance, primarily for planning purposes. Since the southern half of our forecast area operates an aggressive, proactive prescribed burn program, this product will be issued year-round.
Regional Flash Flood Guidance Graphics	Flash Flood Guidance (FFG) is the amount of rainfall in a given time period that will produce flooding on small streams. FFG is distributed via AWIPS in text products and lists FFG values for 1-, 3-, 6-, 12-, and 24-hour time periods for each county. The experimental Regional FFG Graphics are Internet web pages that show these FFG values in both graphical and tabular form. These graphic products are for the entire Southern Region (SR) area, the area of responsibility of each SR River Forecast Center (RFC), and each state in SR. In addition to having a state graphic for Texas, graphics of FFG for north, south, and west Texas are available.
Regional/Local Seasonal Forecast	Regional/Local Seasonal Forecasts may be textual or graphical. They typically consist of short-term climate variability forecasts and monitoring data, and meteorological/hydrological interpretation and assessment of societal impact on a web page. These web pages will normally provide educational material to help users understand the forecast methodology and reliability to better aid preparedness and mitigation efforts. The web page will typically assimilate a wide variety of information on short-term climate variability for the forecast area such as links to official NOAA/NWS forecasts and experimental, locally/regionally produced graphical/textual monitoring products. The area covered by the forecast may be a commonly accepted political or geographical location such as a state, county or region, or it may be a uniquely defined in which case the area will be made explicitly clear on a map on the web page. An example of such a seasonal forecast product suite is the "Florida EL Nino - Southern Oscillation (ENSO) Home Page Featuring: 2002-2003 Experimental Dry Season Forecast for Florida (Valid for period November 1st 2002 through April 30th 2003)" produced by WFO Melbourne, Florida and available on the Internet at: http://www.srh.noaa.gov/mlb/enso/mlbnino.html
RIDGE ? Radar Integrated Display with Geospatial Elements (National)	NWS is responsible to make its weather, water and climate information widely available to taxpayers using commonly accepted standards and technologies. Currently, the NWS provides weather radar information for all Weather Service Doppler Radars (WSR 88-D) in the United States on the NWS Internet page. The National Weather Service Southern Region, working in cooperation with North Central Texas Council of Governments, has developed a method to display radar images more efficiently than the previous method. These radar images, call RIDGE (Radar Integrated Display with Geospatial Elements), allows the radar image to be combined with geospatial elements such as topography maps, highways, and county boundaries. This not only produces a better image, but provides additional reference information for users to understand where they are located. RIDGE also adds the ability to overlay polygon warnings issued by the National Weather Service Forecast Offices.
Rip Current Probability Graphical	The National Weather Services (NWS) Rip Current Probability Graphical product provides a graphical representation of the probabilities of rip currents along area beaches from Pender County, NC south to Georgetown County, SC. This product is issued twice a day.
Route Forecast	The Route Forecast (ROFOR) is an alphanumeric product providing a coded route forecast for regularly scheduled flights or upon request for flights that either begin or end in or that have most of the flight path within the National Weather Service's Pac
Sacramento WRF NMM Model Output	The Sacramento WRF_NMM is run locally at the WFO Sacramento and gives hourly output out to 48 hours. The high resolution model is used for operational forecasting and research in Northern California. Model Output graphics, generated by GEMPAK software, are posted for 3 hourly forecast time steps to the WFO Sacramento web page. The fields include geopotential heights, vorticity, temperatures, dew point, relative humidity, wind, vertical velocity, freezing level, precipitation amount and type, sea level pressure, thickness, clouds, precipitable water, convective available potential energy (CAPE), and convective inhibition (CIN). The model would replace existing Workstation Eta output on the website.
Satellite Interpretation Message	SIM is an alphanumeric product providing an interpretation of synoptic weather features, significant weather areas, and various cloud and weather phenomena based upon satellite imagery (visual, infrared, water vapor, etc.). National Weather Service's Pacific Region's Weather Forecast Office (WFO) Honolulu prepares the SIM for a portion of their area of responsibility (AOR). The AORs for WFOs Honolulu vary and depend upon the program (tropical cyclone, aviation, marine, public, and satellite).
Sea Ice Advisory	Provides analysis, forecast, and climatological information pertaining to sea ice in the waters surrounding Alaska.
Sea Ice Analysis	Sea ice conditions for the waters surrounding Alaska
Sea State Analysis	A graphical product depicting sea state conditions over the North Atlantic and Pacific Ocean Basins. Features such as the location of the ice edge and the isopleths for wave heights and arrows for swell direction are depicted.
Sierra Backcountry Forecast	The Sierra Backcountry Forecast is a web based text product produced by forecasters in support of the Sierra Avalanche Center and the Central Sierra Avalanche Center. The product provides forecasted parameters critical to accurately forecasting avalanche conditions by the Sierra Avalanche Centers. The elements forecasted include temperatures, winds, and sky/weather, all of which affect the stability of the snowpack, changes in the snowpack structure, and ultimately avalanche potential.
Significant Meteorological Information (SIGMET)	SIGMETs are concise, brief descriptions of the development and occurrence or expected occurrence in time and space of specified en-route weather phenomena which may affect the safety of all aircraft operations.
Space Weather for Aviation Service Providers	The Space Environment Center (SEC) Space Weather for Aviation Service Providers web page combines graph and text presentations of near real-time solar and geophysical parameters of interest to the aviation industry. This page incorporates products and models which are driven by data and imagery from ground-based and space-based observations. The Space Weather for Aviation Service Providers web page displays retrieved and reformatted existing SEC products.
Special Marine Warning	An alphanumeric product issued from all WFOs with Marine responsibility. The product is issued to provide notification of short duration marine hazards such as waterspouts, thunderstorms, or hail.
Standardized WFO, Regional, and National Climate Web Pages	Once implemented, this standardization of climate information (regarding what type is provided and where it?s located on NWS Web pages) will enable our users to consistently find climate data no matter which NWS level (WFO, regional, or national) they access via the Web.
Storm Prediction Center Day 3-8 Fire Weather Outlook Guidance	This Product Description Document concerns SPC issuance of Day 3-8 fire weather outlooks to provide national guidance on a critical public safety issue for media, emergency managers, local National Weather Service Forecast Offices and ultimately the United States public. This product will help its customers to adequately prepare several days in advance for the potential of significant fire weather conditions. This product enhancement is aligned with the NOAA Strategic Objective for FY2005-2010 to ?Improve predictability of the onset, duration and impact of hazardous severe weather and water events? and its experimental initiation was part of the 2005 NWS Service Improvement Plan.
Surf Zone Forecast	An alphanumeric product issued from selected WFOs with coastal waters marine responsibility.  The product provides information on surf, water, any potential marine hazards such as rip currents, and the general weather conditions within the surf zone.
Surface Analysis	A graphical product depicting of significant surface features over the Atlantic and Pacific Ocean Basins north of 15 degrees north. Features such as the location of high and low pressure systems, frontal positions, and the analyzed locations of any existing Tropical Cyclones are included.
Surface Temperature Analysis and Anomaly	The Sea Surface Temperature Analysis (SST) and Sea Surface Temperature Anomalies (SSTA)are graphical products depicting sea surface water temperatures and departure from normal. WFO Honolulu produces the SST for the North Pacific (area bounded by equator to 55N and 110W to 160E) and the National Centers for Environmental Prediction (NCEP) Environmental Modeling Center (EMC) produces the SST for both the Atlantic and Eastern Pacific(area bounded by 10S to 50N and 0 to 180 longitude) and the SSTA product for the Atlantic and Eastern Pacific (area bounded by 10S to 50N and 0 W to 180 W longitude).
Tabular Product Evolution in eXtensible Markup Language - Derived Selected Cities Summary Products	TPEX-derived Selected Cities Summary (SCS) products are created from three eXtensible Markup Language (XML) products: ObX - hourly observations FOX3 - highly summarized 3 day forecasts TEX - observed National high/low temperatures The TPEX-derived SCS products are created using an eXtensible Stylesheet Language Transformation (XSLT) style sheet and mimic the legacy SCS products
Tabular Product Evolution in eXtensible Markup Language Products	Four eXtensible Markup Language (XML) products have been created using the forecast information contained in the National Digital Forecast Database (NDFD) for those cities currently contained in the Selected Cities Summary (SCS): ObX - hourly observations FOX3 - highly summarized 3 day forecasts FOX7 -highly summarized 7 day forecasts TEX - observed National high/low temperatures These products can be used as is, or user defined format products (text, HTML, etc.) can be created using eXtensible Stylesheet Language Transformation (XSLT) style sheets. We hope our users and partners will migrate away from legacy text products (e.g., SCS, etc.) to the new XML products.
Tactical Convective Hazard Product (TCHP)	The TCHP provides a graphical presentation of thunderstorm hazards to aviation operations. It depicts current hazardous thunderstorms and a one-hour forecast of hazardous thunderstorm locations. The TCHP updates automatically every 5 minutes. The product is created from radar and lightning data as well as human-generated Convective SIGMET in-flight advisories (SIGMETs updated hourly).
Tactical Decision Aid	The Tactical Decision Aid (TDA) web page for the Terminal Radar Approach Controller (TRACON) highlights forecasts of thunderstorm potential for the TRACON?s aircraft arrival corner posts. These forecasts will be updated hourly during periods of convective weather (occurring or forecast) and every four hours during periods of no convective weather. Forecasts will cover a 4 hour time frame. Forecast output will be a color-coded, bar graph indicating the hourly probability of thunderstorm activity at each corner post during the upcoming 4 hour period.
TAFB Marine Weather Discussion (MIM)	Plain language free text discussion of computer model trends which focuses on expected wind and sea conditions. The product is used as a coordination vehicle among the national centers and coastal Weather Forecast Offices.
Take Off Forecast Product	The Take Off Forecast is a text product produced by an automated program that is then edited and/or augmented by Forecasters or Hydro-Meteorological Technicians (HMTs). The automated program uses FRH model data output for pressure, the Terminal Aerodrome Forecast (TAF) for winds, and the Aviation Model Output Statistics (MAV) for temps and comes up in an editable display with the last 6 hours of obs displayed. The forecast includes an hour by hour prediction of the winds, temps, altimeter setting, and, sometimes, a forecast of wet or dry runway conditions expected on the airport within a 6 hour period from the time of issuance. Forecasts are updated every 6 hours.
Terminal Aerodrome Forecast (TAF)	The TAF is an operational forecast consisting of the expected meteorological conditions significant to a given airport or terminal. TAFs always include a forecast of surface wind speed and direction, visibility, and clouds.
Three-Month Climate Outlooks (Contiguous U.S. and Alaska).	The Climate Prediction Center (CPC) issues a series of thirteen probabilistic three-month temperature and precipitation outlooks.
Three-Month Outlooks Discussion (Contiguous U.S. and Alaska).	The Climate Prediction Center (CPC) provides a technical discussion of the meteorological and climatological basis for the outlooks.
Three-month Probability of Exceedence Outlooks	The Climate Prediction Center (CPC) issues a series of thirteen three-month probability of exceedence outlooks for temperature, precipitation, and heating and cooling degree days for the conterminous U.S.
Tropical Cyclone Advisory Message	The Tropical Cyclone Advisory message (TCA) is an abbreviated alphanumeric text product which the National Hurricane Center (NHC) and the Central Pacific Hurricane Center (CPHC) issue.
Tropical Cyclone Cumulative Wind Distribution (CWD) Graphic	The CWD graphic is issued by the National Hurricane Center. It summarizes how the size of a storm has changed, and the areas potentially affected by sustained winds of tropical storm force (in orange) and hurricane force (in red) for tropical cyclones in the Atlantic and Eastern Pacific basins. This product is also issued for subtropical storms.
Tropical Cyclone Danger Area	The Tropical Cyclone Danger Area is a graphical marine product depicting a tropical cyclone's track (out to 72 hours) and shades in a danger area determined by adding 100, 200, and 300 nautical miles plus the 34 knot wind radii to the 24-, 48-, and 72- hour forecast position respectively in the Atlantic and east Pacific. For the central Pacific the shaded danger area will varying in width dependent upon the hurricane specialists confidence in the track and the length of the 34 knot wind radii. In addition, areas of possible tropical cyclone genesis (out to 36 hours) are included and depicted as either a circular, rectangle, oval, or polygon shaped area. The product is prepared by the TPC and covers the entire Atlantic north of the equator and the Pacific north of the equator from the Mexican and Central America coast west to 140 west. CPHC prepares a separate chart for 140 west to the International Dateline north of the equator.
Tropical Cyclone Discussion (TCD)	The TCD is a text product prepared by the National Hurricane Center (NHC) and Central Pacific Hurricane Center (CPHC) for tropical cyclones in their respective basin of responsibility. The TCD provides forecasters' reasoning behind the analysis and forecast of a tropical cyclone. Discussions include prognostic reasoning; objective techniques employed; NHC, CPHC, and Hydrometeorological Prediction Center guidance used; coordinated 12-, 24-, 36-, 48-, 72-, 96-, and 120-hour tropical cyclone forecast positions and maximum sustained wind speed forecasts; other meteorological decisions; and plans for watches and warnings. This product is also issued for subtropical storms.
Tropical Cyclone Forecast Advisories (TCM)	The is a text product prepared by the National Hurricane Center (NHC) and the Central Pacific Hurricane Center (CPHC) for tropical cyclones in their respective basin of responsibility. TCMs are issued for the Atlantic and eastern Pacific basins by the NHC. TCMs are issued for the central Pacific by the CPHC. The product title depends on the intensity of the tropical cyclone, to include: Tropical Depression Advisory, Tropical Storm Advisory, Hurricane/Typhoon Advisory. This product is also issued for subtropical storms.
Tropical Cyclone Position Estimate (TCE)	The Tropical Cyclone Position Estimate (TCE) is an event-driven (non-routinely issued) alphanumeric product comprised of information concerning the location of the center of a tropical cyclone as determined by land-based radar fixes. The National Hurricane Center (NHC), the Central Pacific Hurricane Center (CPHC), and the Weather Forecast Office (WFO) Guam prepare TCEs on an event-driven basis for tropical cyclone activity within the effective range of land base radars. NHC issues TCEs for tropical cyclone activity in the Atlantic and eastern north Pacific (north of the equator and east of 140 degrees west longitude) basins. CPHC issues TCEs for tropical cyclone activity in the central North Pacific (north of the equator between 140W and 180W longitude) basin and WFO Guam for the northwest Pacific (U.S. territories or the Republic of Palau, Federated States of Micronesia, and Republic of the Marshall Islands north of the equator and from 130W - 180W longitude).
Tropical Cyclone Public Advisories (TCP)	The TCP is a text product prepared by the National Hurricane Center (NHC), Central Pacific Hurricane Center (CPHC), and Weather Forecast Office (WFO) Guam, for tropical cyclones in their respective basin of responsibility. In the Atlantic and central Pacific TCPs are issued for all tropical cyclones by NHC and CPHC, respectively. In the eastern Pacific, NHC issues TCPs when watches or warnings are required, or if the tropical cyclone is expected to impact nearby land areas. In the western Pacific WFO Guam issues TCPs for all tropical cyclones expected to affect land within 48 hours. The product title depends on the intensity of the tropical cyclone, to include: Tropical Depression Advisory, Tropical Storm Advisory, Hurricane/Typhoon Advisory. This product is also issued for subtropical storms.
Tropical Cyclone Report (TCR)	The Tropical Cyclone Report (TCR) is a post-event overview of a tropical cyclone comprised of a narrative describing the overall storm and a detailed listing of 6-hourly location and intensity data in both text and graphic format. The National Hurricane Center (NHC) and the Central Pacific Hurricane Center (CPHC) prepare TCRs within 90 days of any tropical cyclone that occurs within their respective Area of Responsibility (AOR). NHC issues TCRs for tropical cyclone activity in the Atlantic and eastern north Pacific (north of the equator and east of 140 degrees west longitude) basins. CPHC issues TCRs for tropical cyclone activity in the central North Pacific (north of the equator between 140W and 180 degrees west longitude) basin.
Tropical Cyclone Storm Surge Probabilities	The product consists of a graphic and GRIB2 data for creating the graphic for the Gulf of Mexico and Atlantic coastal areas of the continental United States. The graphic shows probabilities, in percent, of storm surge exceeding 2 feet through 25 feet, at 1 foot intervals (e.g., the probabilities in percent, of storm surge exceeding 2 feet, 3 feet, 4 feet, …, 25 feet). This storm surge graphic is based upon an ensemble of Sea, Lake, and Overland Surge from Hurricanes (SLOSH) model runs using the National Hurricane Center (NHC) official advisory and accounts for track, size, and intensity errors based on historical errors.
Tropical Cyclone Summary-Fixes (TCS)	The TCS is an alphanumeric product which the Central Pacific Hurricane Center (CPHC) provides when there is a classifiable (using the Dvorak technique) tropical cyclone activity in the north central or south Pacific. The TCS is a satellite-based estimate of tropical cyclone location, movement, and intensity with a brief remarks section. Pacific Region's CPHC prepares TCS for a portion of their area of responsibility (AOR). The AORs for CPHC/Weather Forecast Office (WFO) Honolulu (CPHC is collocated with the Weather Forecast Office Honolulu) varies depending upon the program (tropical cyclone, aviation, marine, public, and satellite). For TCS program, CPHC's AOR is the area north of the equator between 140W - 180 longitude and from the equator to 25 S latitude between 120W to 160E.
Tropical Cyclone Surface Wind Speed Probabilities - Graphical	The Tropical Cyclone Surface Wind Speed Probabilities product displays probabilities in percent of sustained wind speeds equal to or exceeding 34-, 50-, and 64-knot wind speed thresholds. These wind speed probabilities are based on the track, intensity, and wind structure uncertainties in the official forecasts from the National Hurricane Center, Central Pacific Hurricane Center, and the Joint Typhoon Warning Center.
Tropical Cyclone Surface Wind Speed Probabilities - Text	The Tropical Cyclone Surface Wind Speed Probabilities text product contains two parts. The first part, called Maximum Wind Speed (Intensity) Probability Table, provides over a five day period what the probabilities are for the maximum sustained (1-minute average) wind speed of a tropical cyclone for various intensity categories. A second part, called Wind Speed Probability Table for Specific Locations, provides probabilities, in percent, of sustained wind speeds equal to or exceeding 34-, 50-, and 64-knot wind speed thresholds. These wind speed probabilities are based on the track, intensity, and wind structure uncertainties during recent years in the official forecasts from the National Hurricane Center and the Central Pacific Hurricane Center and are computed for coastal and inland cities as well as offshore locations (e.g., buoys).
Tropical Cyclone Surface Wind Speed Probabilities in NDFD	The NWS provides access to operational and experimental gridded forecasts of weather elements (e.g., maximum temperature, sky cover) through the National Digital Forecast Database (NDFD). The NDFD contains a seamless mosaic of digital forecasts from NWS field offices working in collaboration with the National Centers for Environmental Prediction (NCEP). The Tropical Cyclone Surface Wind Speed Probabilities (TCSWSP) is an NCEP, event-driven product. The TCSWSP is an experimental product which will be made available via the NDFD. This product depicts probabilities, in percent, of sustained surface wind speeds. These probabilities are expressed for wind speed thresholds equal to or exceeding 34-, 50-, and 64-knots. These wind speed probabilities are based on the track, intensity, and wind structure (size in terms of radii) uncertainties in the official forecasts from the National Hurricane Center (NHC). The product will cover the continental U.S. and adjacent waters.
Tropical Cyclone Track and Watch/Warning Graphic	The Tropical Cyclone Track and Watch/Warning graphic contains the storm's forecast track, a cone along the track based upon the average area of uncertainty for the position of the center, and coastal tropical storm and hurricane watches/warnings. The coastal watches and warnings display shows an approximate representation of coastal areas under a hurricane warning (red), hurricane watch (pink), tropical storm warning (blue) and tropical storm watch (yellow). The orange circle indicates the current position of the center of the tropical cyclone. The black line and dots show the NHC forecast track of the center at the times indicated. The NHC forecast tracks of the center can be in error, and the white areas indicate the increasing average area of uncertainty for the position of the center as a function of time. This product is also issued for subtropical storms.
Tropical Cyclone Update (TCU)	The TCU is a brief alphanumeric text product which the National Hurricane Center (NHC) and the Central Pacific Hurricane Center (CPHC) issue to inform customers of unexpected or sudden changes in a tropical cyclone or to post or cancel watches and warnings. NHC and CPHC issue TCUs on an event-driven basis in lieu of or preceding special advisories.
Tropical Cyclone Watch/Warning Product	The Tropical Cyclone Watch/Warning product (TCV) is based upon the Valid Time Event Code (VTEC). It summarizes all new, continued, and cancelled tropical cyclone watches and warnings issued by: the National Hurricane Center (NHC) for the U.S. Atlantic and Gulf coasts, Puerto Rico and U.S. Virgin Islands; and the Central Pacific Hurricane Center (CPHC) for the main islands of Hawaii.
Tropical Cyclone Wind Field Graphic	This graphic illustrates the areas potentially being affected by tropical cyclone sustained winds of varying force. The graphic also shows an approximate representation of coastal areas under a hurricane warning, hurricane watch, tropical storm warning and tropical storm watch. The white dot indicates the current position of the center of the tropical cyclone, and the dashed black line shows the histosry of the center of the tropical cyclone.
Tropical Pacific Mean Sea-Surface Temperature (SST) Outlook	The Climate Prediction Center's climate outlook techniques rely significantly upon the slowly varying global SST field and do not have usable accuracy at long lead times. These SST outlooks make tangible the results of research activities by scientists.
Tropical Streamline Surface Analysis	A graphic product issued from the WFO Honolulu, HI, that provides information on significant surface features over the Pacific Ocean Basin such as location of high and low pressure systems, areas of gale strength winds, and the Inter-tropical Convergence
Tropical Surface Analysis	A graphic product issued from the Tropical Prediction Center and the WFO Honolulu, HI, that provides a depiction of significant surface features over the Tropical Atlantic and Pacific Ocean Basins. Features such as the location of high and low pressure s
Tropical Weather Discussion (TWD)	The TWD is an alphanumeric product providing information on current atmospheric conditions at the surface and aloft such as tropical cyclones, mesoscale and synoptic scale features, and areas of shallow and deep convection. This product is prepared over the tropical and subtropical Atlantic and Pacific ocean areas by the Tropical Prediction Center and the Honolulu Weather Forecast Office.
Tropical Weather Outlook (TWO)	This PDD is updated for issuance of Special Tropical Weather Outlooks. There are no other changes to this product. The TWO is a text product prepared by the National Hurricane Center and Central Pacific Hurricane Center for their respective areas of responsibility. It is a general assessment of activity in the tropics, pertaining to tropical cyclone formation by providing possible areas where tropical cyclones could development.
Tropical Weather Summary (TWS)	PDD updated for the following: Effective with the 2009 season, the product changes from a narrative to a mainly tabular format. The TWS is a monthly alphanumeric product issued by the National Hurricane Center (NHC) and the Central Pacific Hurricane Center (CPHC) to summarize tropical cyclone activity for the previous month. NHC issues summaries for tropical cyclone activity over the Atlantic and eastern north Pacific (north of the equator and east of 140W longitude) basins. CPHC issues summaries for tropical cyclone activity over the central North Pacific (north of the equator between 140W and 180W longitude) basin. The centers issue new summaries the first day of each month from June through December. The last TWS of the tropical cyclone season (December issuance) covers activity for the entire season from June through the end of November. Effective with the 2009 season, the product changes from a narrative to a mainly tabular format.
Tucson, AZ WFO Precipitation Monitoring Page	The Tucson climate web page displays precipitation analyses for National Weather Service observation sites in southeast Arizona. This web page allows a person to select various methods for precipitation analysis with an emphasis on drought monitoring. Analyses can vary by length of time and geographic area of interest. Data is presented in a graphical form of time versus amount.
U. S. Drought Monitor	NOAA's Climate Prediction Center (CPC) and National Climatic Data Center (NCDC), the U.S. Department of Agriculture, and the National Drought Mitigation Center (NDMC) jointly issues this graphic summarizing the extent and intensity of drought conditions
U.S. Drought Outlook	CPC issues a national Drought Outlook for the remaining part of the month of issue plus the next three months
U.S. Drought Outlook Discussion	The Climate Prediction Center (CPC) issues a Drought Outlook discussion for the remaining part of the month of issuance plus the next three months.
Volcanic Ash Advisory	The Volcanic Ash Advisory (VAA) is an alphanumeric product providing observational information on volcanic eruptions, and observational and forecast information on the vertical and horizontal extent of airborne volcanic ash.
Water Resources Streamflow Outlook	The National Weather Services (NWS) Water Resources Streamflow Outlook webpage and text product provides expected streamflow conditions for basins across the Ohio Valley for 30-days, 30- to 60days and 60- to 90-days. In the last few years, the NWS has added the Advanced Hydrologic Prediction Service (AHPS) to it suite of hydrologic services. As part of it, the River Forecast Centers (RFC?s), began issuing 90-day probabilistic forecasts for river forecast points using the National Weather Service River Forecast Systems (NWSRFS) Ensemble Streamflow Prediction (ESP) service. With the technology of ESP many opportunities are available for the advancement of the hydrologic sciences. At the same time, there are gaps within the current AHPS program that need to be filled. They include short term probabilistic forecasts and 30, 60 and 90 day streamflow forecasts for our customers and partners.
Weather Activity Planner	The Weather Activity Planner (WAP) is an easy to use interface that permits public access to NOAAs National Weather Service (NWS) Weather Forecast Offices (WFOs) local digital forecast data base. The web page interface allows an individual to enter a range of values for specific weather parameters and obtain a forecast for the defined area of interest. The output is forecast data pulled directly from the local WFOs digital forecast data base, and represents average conditions for the next 7 days across a 5 km grid nearest the user-selected point. The resulting data is presented graphically, highlighting periods when the selected range of values applies. The tool helps satisfy e-gov initiatives by offering an avenue to obtain government-provided data.
Weekly Weather and Crop Bulletin	The Climate Prediction Center's (CPC) and U.S. Department of Agriculture's Joint Agricultural Weather Facility (JAWF) issue this weekly report containing written summaries of domestic and international agricultural weather conditions.
Western Region Fire Weather/Marine Point Forecast Matrix (PFM)	Land management agencies have expressed a need for easily accessible tabular forecast data that is tailored toward fire behavior applications. A fire weather version of the Point Forecast Matrix (PFM) table fits this need well because it allows agency specialists to quickly run simple fire behavior models for planning purposes. This is turn allows land management agencies to ensure the safety of fire crews as well as better plan prescribed burns and other projects in a cost and resource effective manner.
Western Region Graphical Weather Story of the Day	The Graphical “Weather Story of the Day” is a graphical representation (product) which depicts the most important weather feature in the forecast area of responsibility of individual NWS Weather Forecast Offices (WFO) in Western Region. The “Weather Story of the Day” is not time dependent. That is, the product depicts the most significant weather feature through the 7-day forecast period. A graphical user interface allows the forecaster to include a brief text, a few sentences in length, describing the “Weather Story of the Day” graphical product. If necessary the product may include a series of images to more clearly communicate complex weather situations.
Western Region Headquarter Web Site/Page	The Western Region (WR) Headquarter Web Site/Page provides access to a description of Western Region Headquarters (WRHQ) and resources, a summary of current watch/warnings in effect, and some visual pages that provide links to WR offices and other National Weather Service (NWS) sites.
Western Region Standardized Fire Weather Web Pages	The need for improved fire weather information via the internet by land management and fire suppression agencies in Western Region (WR) is continually increasing. Multiple fire weather user agencies have requested a consistent WFO fire weather web page layout and more interactive graphical web pages to provide critical fire weather information. To account for these requests, WR tested consistent, interactive, fire weather web pages at every WR WFO from August 1, 2008 to June 1, 2009. Customer comment via a standard web survey,e-mail and face-to-face fire weather meetings was overwhelmingly positive. The pages became operational on November 2, 2009.
WFO Display of Ceiling Forecast Graphic	The Ceiling Forecast Graphic is a web-based presentation of digital ceiling forecast data originating from local Weather Forecast Office (WFO) digital databases. The WFO digital forecast data are uploaded to a regional web server. These graphic images display ceilings from the time of issuance out to 24 hours.
WFO Eureka Humboldt Bay Bar Graphical Forecast	A graphical display of wave height, period, direction and areas of extreme wave steepness or breaking potential in and near the entrance to Humboldt Bay, CA
Winds and Temperatures Aloft Forecast	The Winds and Temperatures Aloft Forecast (FDHW) is an alphanumeric product providing a coded forecast for winds and temperatures aloft for Lihue, Honolulu, Kahului and Hilo within the National Weather Service's Pacific Region's Weather Forecast Office (
World Area Forecast System (WAFS) Significant Weather High Level Charts	The WAFS Significant Weather (SIGWX) High Level Charts are graphic representations of forecasted significant weather on a global scale. The SIGWX High Level Charts indicate the 24-hour future position of jet streams, tropopause heights, convection, turb
WR Climate Web Page	The WR Climate Web Page provides a single web based interface for the public to more easily access official climate forecasts, climate products and daily weather summaries currently issued as part of the routine suite of NWS services.
WR Water Supply Page	The WR Water Supply Page provides a single web page for displaying water supply forecasts from all WR RFCs. Forecasts are color coded according to percentage of normal runoff volume. More specific information for individual forecast points is available by drilling down to points.