| Product Name |
Brief Description |
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| Enhanced Product – WR Experimental Use of 1-inch Diameter Hail as a Criterion for SVR | This experimental product will begin on June 1, 2009. 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) a Severe Thunderstorm Warning will be issued based on expectation of winds gusting to 58 mph or greater and/or hail of one (1) inch diameter or greater. This experiment will be implemented for all areas in eight western states: Arizona, California, Idaho, Montana, Nevada, Oregon, Utah, and Washington. | Exp_SVR_SVR_WR_1_in_hail.pdf |
| Enhanced Product- Use of 1 inch Diameter Hail as a Criterion for Severe Thunderstorm Warnings in NWS Central Region | The Central Region Severe Thunderstorm Warning (CR 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. Traditionally the SVR has been based on expectation of winds gusting to 58 mph or greater and/or hail of ¾ inch diameter or greater. In the Central Region, the minimum hail criterion is increased to one (1) inch in diameter. This change is motivated by research indicating significant damage does not occur until hail size reaches 1 inch in diameter, and in response to requests by core partners in emergency management and the media | PDD_SVR_CR_final.pdf |
| Experimental 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 | MultimediaWeatherBriefingCentralRegion.pdf |
| Experimental 10 Percent Probability of Exceedance Wind Gust Grid (G10) | Web page showing a graphical presentation of the 10% Probability of Exceedance Wind Gust Grid (G10) probability covering the Elko WFO's County Warning Area.These graphics represent a 10 percent chance of wind gusts exceeding the given value over the 12-hr period stated, or a 90 percent chance that the maximum wind gust during the 12-hr period will not exceed the given value. The graphics cover two 12 hour periods out to 24 hours | PDD_G10_dec08.pdf |
| Experimental Alaska Region NDFD Grids | Under statute, the National Oceanic and AtmosphericAdministration (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 users. The most
recent experimental digital datasets (and associated graphic forecast displays) integrated into NDFD are the following elements for Alaska: Maximum Temperature, Minimum Temperature, 12-hour Probability of Precipitation, Wind Speed, Wind Direction, and Significant Wave Height. | AK_ExperimentalPDD_090606.pdf |
| Experimental Bulleted Winter Weather and Non-Precipitation Statements | WFO Reno has modified the baseline WSW and NPW formatters to produce a bulleted product with format similar to severe thunderstorm and flash flood warnings. This format is easier for users to read and quickly gather vital watch, warning and advisory during hazardous winter and non-precipitation events. | BulletedWSWNPWPDD1.pdf |
| Experimental Carolinas Coast/Southeastern Marine Web Portal | The National Weather Service's (NWS)Experimental Carolinas Coast/Southeastern Marine Web Portal provides marine observations, forecasts and short and long-fuse warnings for the coastal waters of North Carolina, South Carolina and northern Georgia and the Atlantic and Gulf coast areas of the Southern Region. The recent development of regional and sub regional coastal ocean observing systems under the national Integrated Ocean Observing System (IOOS) initiativecreates new opportunities for increased meteorological and oceanographicdata availability. | CarolinaCoast.pdf |
| Experimental Cold Advisory for Newborn Livestock (CANL) Graphic | The experimental CANL graphic will take the current NDFD forecast grids for temperature and wind (wind chill), humidity, and QPF and create a graphic that shows the potential for weather related impacts to newborn livestock. | CANLPDD1.pdf |
| Experimental 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) 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, ASCII tabular values of total absorption at 10 MHz, and an ASCII message indicating warning and recovery times.
o DRAP2 is updated every minute (see below for regional update latency)
SWPC data and products are designed to provide accurate and real-time space weather information for the safety and benefit of our customers.
| SWxDRAP2.pdf |
| Experimental Google LSR Webpage Product WFO State College | The purpose of this experimental web page is to provide our customers and partners a simple way to display NWS polygon warnings and LSR reports on an interactive map that customers can use to zoom in to their specific location. Right now, most NWS warnings and LSR’s are in text form. Those that are plotted are done so on a static background map. By incorporating Google Map technology the user can easily switch from a terrain map to a road map background and quickly zoom and pan around for their location. | Google_LSR.pdf |
| Experimental Google Map Display Service of NWS Weather Data | Utilization of Google Maps across National Weather Service (NWS) web pages has proven very popular for both users and NWS webmasters and Information Technology Officers (ITO). An increasing number of NWS webmasters and ITOs are creating diverse Google Map service applications to display various existing NWS data sets in a more convenient manner for web users. It is impossible to issue individual PDDs for the large number of experimental Google Map applications being developed across Western Region (WR). This umbrella PDD, as defined in NWSI 10-102, allows WR webmaster and ITO creativity in producing experimental Google Map applications, while managing implementation and project tracking and information sharing. Requirements defined in PDD. | WRGoogleMapAppsUmbrellaPDD.pdf |
| Experimental Graphical Area Forecast | The Geographical Area FOrecast (GFA) product is a graphhical representation of the current operational production of aviation area forecasts, which provide an overview of weather conditions which could impact aviation operations. The experimental graphical Airman?s Meteorological Advisory (G-AIRMET) is a BUFR-formatted time-series depiction of aviation hazards occurring with occasional or greater frequency throughout the conterminous U.S. and adjacent coastal waters (NWS, 2005a). The aviation hazards depicted in the experimental G-AIRMET (FAA, 2006) are:
(1) Areas of surface visibility below three (3) statute miles, including the weather causing the visibility restriction.
(2) Areas of cloud ceilings with bases less than 1000 feet above ground level (AGL).
(3) Areas of widespread mountain obscuration where Visual Meteorological Conditions (VMC) cannot be maintained, including the weather causing the obscuration.
| GraphicalFA.pdf |
| Experimental Graphical Tropical Weather Outlook (GTWO) | This product is a visual companion to the text TWO. The text TWO is an existing product that describes areas of disturbed weather and their potential for tropical cyclone formation. The gTWO indicates the current location of the weather systems by encircling them and indicating their potential for development by a color code. The gTWO will be issued for the Central Pacific Hurricane basin on an experimental basis for 2009 | EXPGTWO2009.pdf |
| Experimental Grid-based Emergency Communications Center Dispatch Area (ECCDA) Forecast Summaries, or ECCDA Radio | WFO Medford has developed a stand-alone ECCDA formatter based on fire weather grids and available on the Western Region server at 2.5 sq. km resolution. This formatter produces the ECCDA product automatically once all needed grids are available and the ECCDA discussion is produced (as is done currently). No additional forecaster intervention required. ECCDA text resulting from the grid-based formatter is written in a shorter, conversational style. This style will be easier for fire dispatchers to read on agency radio and easier for listeners to understand and retain. The new formatter will be tested at four WFOs serving northern California fire weather user (Medford, Eureka, Sacramento and Reno), from approximately January 1 to October 1 2009. Existing ECCDA products will continue to be available and all other aspects of the ECCDA program, including web availability, remain the same. | Experimental_ECCDA_Radio_PDD.pdf |
| Experimental Gridded Significant Wave Heights from the National Centers | The traditional format for the significant wave height products from the National Centers are graphical depictions of the observed and forecast wind-driven waves for the Atlantic and Pacific Oceans adjacent to the coasts of the Continental United States (US) and extending south over the Caribbean Sea and the west coast of Central America. These graphical products have been prepared for many years in the raster format by the Ocean Prediction Center (OPC) and the Tropical Prediction Center’s (TPC) Tropical Analysis and Forecast Branch (TAFB) and transmitted via radiofax and the internet. The production and dissemination of the traditional raster format for the graphical significant wave height products from the OPC and TAFB will continue.
The experimental gridded products will be prepared for the initial wave heights, the 24 hour and 48 hour forecast wave heights in a gridded format. The experimental gridded products will be disseminated by the National Weather Service (NWS) Telecommunications Gateway to the Weather Forecast Offices (WFOs), National Centers, and other users.
| PDDGriddedwavesJun07update.pdf |
weather.gov 
