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National Weather Service
Listing of EXPERIMENTAL Products
 
Product Name Brief Description Submitter Date Entered
Sorm Surge Watches and Warnings The National Weather Service (NWS) is implementing new storm surge watches and warnings in association with Atlantic tropical cyclones affecting the continental U.S. beginning with the 2017 hurricane season. These additions to the NWS product suite will require changes to Tropical Cyclone Watch/Warning (TCV) and Hurricane Local Statement (HLS) products. All TCV products issued by the NWS during the 2017 season for tropical cyclones originating in the Atlantic basin affecting the continental U.S. would include Valid Time Event Code (VTEC) for storm surge watches and/or warnings when conditions warrant. In addition, the NWS is proposing to expand the VTEC available in TCV products issued by the National Hurricane Center (NHC) for Atlantic tropical cyclones affecting the continental U.S. to include all NWS-issued VTEC both along the coast and inland Because of the increased information included, it is possible that the NHC TCV product may not be sent until as much as 45 minutes after the NHC advisory package in some circumstances. No changes are expected for the release times of the TCV and HLS products issued by local Weather Forecast Offices (WFOs).Changes to the HLS products issued by WFOs would be limited to the “NEW INFORMATION” section of the product. The subsections for “CHANGES TO THE WATCHES AND WARNINGS” and “CURRENT WATCHES AND WARNINGS” would include storm surge watch warnings. Applicable changes will be made to the suite of tropicl cyclone products (text and graphics) to accomodate this implementation. Jessica Schauer 2016-06-30
Enhancement to the Operational Twitter SDD Update Service Description Document for Twitter to indicate that NWS may provide tweets of short fused watches/warnings/advisories. Current description of our service indicates that NWS will only provide tweets with long fused alerts. Also need to indicate that NWS may provide content-specific feeds in addition to office-oriented feeds. Content specific feeds better meet the needs of our national partners who aren’t focused on the area of only one particular office. Wendy Levine 2016-05-10
Experimental Water Information Interface Webpage Effective on or about Tuesday, June 14th, 2016, the National Centers for Environmental Prediction (NCEP) will begin operationally running version 1.0 of the National Water Model (NWM). The NWM is an hourly uncoupled hydrologic analysis and forecast system that will provide streamflow for 2.7 million river reaches and other hydrologic information on 1km and 250m grids. The NWM provides the NWS with a multi-scale, parallelized, process-based water cycle modeling capability. Upon initial implementation, the NWM system will provide multiple country-wide hydrologic analysis products and forecast output across a range of forecast lead times. These will be combined with other data from NOAA to provide the Nation with comprehensive information on a range of water-related concerns such as snowpack, soil moisture, and potential areas of flooding.Version 1.0 of the NWM will provide a capable and solid foundation that will support year-over-year growth in operational hydrologic forecasting capability. Goals for this initial implementation include: 1) Provide forecast streamflow guidance for underserved locations 2) Produce spatially continuous national estimates of hydrologic states (soil moisture, snow pack, etc.) 3) Seamlessly interface real-time hydrologic products into an advanced geospatial intelligence framework 4) Provide a modeling architecture that permits rapid infusion of new data, science and technology Dan Matusiewicz 2016-03-16
Experimental PEAC Monthly Climate Summary and Forecast for the Federated States of Micronesia The Pacific ENSO Applications Climate (PEAC) Center was established in August 1994 as a multi-institutional partnership, to conduct research and produce information products on climate variability related to the El Niño - Southern Oscillation (ENSO) climate cycle in the U.S.-Affiliated Pacific Islands (USAPI). To this end the PEAC Center provides rainfall, sea level, general and island/island grouping specific forecasts, and a tropical outlook to the USAPI on a monthly and quarterly basis by means of a printed bulletin (see http://www.weather.gov/peac/update). The dissemination of these summaries and forecasts need wider distribution to the climate community. Therefore, placing these forecasts into AWIPS will allow not only wider distribution, but an easily accessible archive. Providing climate data is part of the NWS’s mission and connected to all six of our primary goals. By making these forecasts easily available, the NWS is enhancing climate services to help communities, businesses, and governments understand and adapt to climate-related risks. The product proposed, issued monthly, is a seasonal climate summary and forecast of rainfall and sea level for the four states of the Federated States of Micronesia: Yap, Chuuk, Pohnpei and Kosrae. Individual sections for each island will include a summary of climate conditions observed on the island along with observed rainfall and sea level values. The forecast for each section/state will include a forecast summary of expected climate conditions over the next season, a probabilistic seasonal rainfall forecast by season for the next 12 months, a long range rainfall forecast in percent of total rainfall, and a deterministic sea level forecast. Jenna Meyers 2016-01-19
Experimental PEAC Quarterly Regional Summary The Pacific ENSO Applications Climate (PEAC) Center was established in August 1994 as a multi-institutional partnership, to conduct research and produce information products on climate variability related to the El Niño - Southern Oscillation (ENSO) climate cycle in the U.S.-Affiliated Pacific Islands (USAPI). To this end the PEAC Center provides rainfall, sea level, general and island/island grouping specific forecasts, and a tropical outlook to the USAPI on a monthly and quarterly basis by means of a printed bulletin (see http://www.weather.gov/peac/update). The dissemination of these regional summaries needs wider distribution to the climate community. Therefore, placing them into AWIPS will allow not only wider distribution, but an easily accessible archive. Providing climate data is part of the NWS’s mission and connected to all six of our primary goals. By making these summaries easily available, the NWS is enhancing climate services to help communities, businesses, and governments understand and adapt to climate-related risks. The product proposed, issued quarterly, is a regional climate summary of rainfall, sea level and tropical cyclone activity for the USAPI. Individual sections will include a general summary of climate conditions across the Pacific Ocean, a discussion of the past season, a brief discussion of the southern oscillation index, tropical cyclone activity and broad forecast, reported sea level data, ENSO alert system status, and a general seasonal forecast of ENSO. Jenna Meyers 2016-01-19
Experimental Graphical Forecasts for Aviation In May 2015 the National Weather Service received a formal request from the Federal Aviation Administration (FAA) for the NWS to cease production of textual Area Forecasts (FAs), contingent upon the provision of equivalent meteorological information in support of aviation.The Graphical Forecasts for Aviation include observations and forecasts valid for the continental United States. Observational data and warnings are time synchronized and available by the hour for the current time and the prior six hours. Hourly model data and forecasts, including National Digital Forecast Data (NDFD), are available to 15 hours in the future. Wind, icing and turbulence forecasts are available in 3000 ft. increments from the surface up to 18000 ft. MSL, and in 6000 ft. increments from 18,000 MSL to FL420 (42,000 ft. MSL). Turbulence forecasts are also broken into LO (below 18,000 MSL) and HI (at or above 18,000 MSL) graphics. A maximum icing graphic and maximum wind velocity graphic (regardless of altitude) are also available.Multiple fields of interest are combined in categories that the user is able to select from the top level Weather menu. The data for each category is determined by the time period, observations (current time and the prior six hours) and forecasts (valid up to 15 hours in the future). Additional information is available in text format when mouse-clicking on the map or using the hover function. The “Configure” menu enables the user to customize the satellite and radar displays in addition to choosing parameters for the observations and aviation advisories displayed. Imagery, observations, and forecast graphics are overlaid on high-resolution basemaps from ESRI, including colored relief, satellite and street views. Overlays include navigational aids, airports, and heliports for the entire United States. More detail is revealed as you zoom in and individual layers can be turned on or off independently. Debra Blondin 2016-01-05
Prototype Texas Regional Rainfall Webpage The Texas Regional Rainfall webpage will display the most current quantitative precipitation estimates (QPE) produced by the Advanced Hydrologic Prediction Service (AHPS). Four maps containing QPE for durations of 24-hour, 48-hour, 72-hour, and weekly will be available each day for a region of Texas containing the County Warning Areas of the National Weather Service offices in Brownsville, Corpus Christi, Austin/San Antonio, and Houston/Galveston. There will be a built-in archive function on the webpage that will allow the user to quickly obtain QPE maps for past dates. Melinda Bailey 2015-12-15
Experimental Days 3-7 Winter Storm Threat The purpose of the Experimental Days 3-7 Winter Storm Threat product is to graphically display location and level of winter storm threats in the extended portion of the forecast 3 to 7 days in the future. This threat level combines forecaster confidence and potential impact. Rick Watling 2015-11-23
Experimental Lake Effect Snow Warning Polygons The experimental Lake Effect Snow Warning (LES) polygon areas delineate the locations of highest impact of the LES. As the lake effect shifts, polygon areas will change spatially and temporally to best delineate the areas of highest impact over the course of the LES event (for example, snowfall rate, blizzard-like conditions, total snowfall). Issuance of the product would be based upon forecaster confidence of reaching LES Warning criteria: 7 inches or more in 12 hours, or 9 inches or more in 24 hours. Jason Franklin 2015-09-17
Experimental Gulf Stream Forecast The Gulf Stream Forecast is a 3 hourly forecast for areas along the Gulf Stream as output from the NWPS model from the WFO Miami Forecast Office. The graphic display shows the Gulf Stream current, significant wave height, wind speed, and peak wave period and direction in graphical formats. There are 4 separate geographical areas, and all the graphs can be stepped in time or looped on the webpage. Melinda Bailey 2015-09-11
Experimental Rip Current Risk Graphic Graphical Rip Current Risk derived from the Surf Zone Forecast. Wayne Presnell 2015-09-02
Experimental International Arrival and Departure GATE Forecasts These web-based International Departure Gate Forecast (IDGF) and International Arrival Fix (IAF) forecasts provide categorical convective guidance for specific locations in the National Airspace System (NAS) allowing for more accurate air traffic management. These forecasts will be a collaborative effort between the NOAA/NWS Center Weather Service Units (CWSU) located at the FAA Air Route Traffic Control Centers in Nashua NH (Boston), Ronkonkoma NY (New York) and Leesburg VA (Washington).The purpose of this experimental web page is to provide the Federal Aviation Administration (FAA) and the airlines with expanded weather planning information.This expanded information begins to address a gap in the NWS convective product suite and the Terminal Aerodrome Forecast (TAF). Specific forecast products are not available that forecast convective weather at aeronautical arrival and departure fixes (known as ‘gates’). Thunderstorm impact at or near these gates has a significant impact on the flow of aircraft through the NAS causing delays. This will allow critical partners and customers to make more informed decisions regarding the air traffic flow through the NAS. Scott Reynolds 2015-08-28
Experimental Week 3-4 Temperature and Precipitation Outlooks The National Weather Service, Climate Prediction Center delivers real-time products and information in order to monitor and predict climate variations and their potential associated impacts on timescales from weeks to about 1 year. The objective is to promote effective management of climate risk and a climate-resilient society. Currently, the Climate Prediction Center issues temperature and precipitation outlooks for the Week-2 and 1-month outlook time periods. No current products exist for the intermediate timescale (i.e. Week 3-4) between these two forecast time horizons. The initial release of the experimental Week 3-4 Temperature and Precipitation Outlooks will consist of three components. These are (1) a temperature outlook map targeting the combined Week 3-4 outlook, (2) a precipitation outlook map targeting the combined Week 3-4 outlook period and (3) prognostic map discussion (PMD) text explaining the rationale for the forecast. Jon Gottschalck 2015-08-28
Experimental NDFD Full Resolution XML Web Service 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). Full resolution data from NDFD web services will be made available experimentally in order to be consistent with the resolution of data provided in Gridded Binary Data Edition 2 (GRIB2) via file transfer protocol (ftp) or hypertext transfer protocol (http), and that of graphical images produced by the NDFD Map Viewer. Andy Horvitz 2015-07-29

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