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Explore the evolution and delivery of National Weather Service forecasts in a digital era, including the National Digital Forecast Database and various digital services.
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National Weather ServiceForecast Evolution and Delivery in a Digital Era Glenn Austin Office of Climate, Water, and Weather Services Dave Ruth Office of Science and Technology National Digital Forecast Database Technical Workshop November 2, 2006 NOAA/NWS Digital Services
National Digital Forecast Database • GOAL: Make NWS information available electronically in digital form. • HISTORY: NDFD has been operational since 2004. NOAA/NWS Digital Services
Internet-based Services • e-Gov and e-commerce are supported with: • File Dissemination Services • XML Web Service • Web Graphics • GIS (decoder/encoder) • Archive Access System NOAA/NWS Digital Services
Geographic Domains • CONUS • Mosaic • 16 pre-defined sectors • User-defined areas • OCONUS • Alaska • Hawaii • Guam • Puerto Rico/V.I. NOAA/NWS Digital Services
File Dissemination • Data posted in WMO GRIB2 format at: • ftp://tgftp.nws.noaa.gov/SL.us008001/... • Decoder software: http://www.weather.gov/mdl/NDFD_GRIB2Decoder • Function: Allows download and conversion to: • Shape files (compatible with ESRI) • Points, Simple polygons, Merged polygons • netCDF • GrADS • Lat/lon grids, Projected grids • Float files • Comma Separated Values files NOAA/NWS Digital Services
Experimental elements: QPF Snow Amount Sky Cover Significant Wave Height Probability of Tropical Cyclone Wind Speeds Wind Gust Operational elements: Maximum Temperature Minimum Temperature Temperature Dew Point Probability of Precipitation Weather Wind Direction Wind Speed Apparent Temperature Relative Humidity NDFD StatusNow available at ftp://tgftp.nws.noaa.gov/SL.us008001/... ST.opnl/DF.gr2/DC.ndfd/ ST.expr/DF.gr2/DC.ndfd/ Note: Six Alaska NDFD elements are currently experimental. NOAA/NWS Digital Services
Technical Releases • Day 1-3/4-7 file split • Effective September 6, 2006 • Announced in TIN 06-30 issued May 9, 2006 • Adjust time NDFD is extended 24 hours to 22Z • November 28, 2006 • Announced in TIN 06-72 issued Oct 23, 2006 NOAA/NWS Digital Services
Products Under DevelopmentTo be available at ftp://tgftp.nws.noaa.gov/SL.us008001/... Convective Weather Elements From SPC: • Probability of Tornadoes • Probability of Hail • Probability of Severe Storm Winds • Probability of Significant Tornadoes • Probability of Significant Hail • Probability Significant Severe Storm Winds • Total Probability of Severe Storms ST.expr/DF.gr2/DC.ndfd/ NOAA/NWS Digital Services
Products Under DevelopmentTo be available at ftp://tgftp.nws.noaa.gov/SL.us008001/... Climate Outlooks from CPC: • Probability of 8-14 Day Temperature and Precipitation Above/Below Normal • Probability of 30 Day Temperature and Precipitation Above/Below Normal • Probability of 90 Day Temperature and Precipitation Above/Below Normal ST.expr/DF.gr2/DC.ndfd/ NOAA/NWS Digital Services
Planned Additional Capabilities • XML to query which grids have changed by element, projection, and WFO • Weather Hazard Grids • Fire Weather Grids • Hourly grids for day 1 • 2.5 km grids • Probability grids that quantify uncertainty NOAA/NWS Digital Services
National Digital Guidance Database NOAA/NWS Digital Services
Operational Air Quality elements: 1 hour Ozone Concentration (3x) 8 hour Ozone Concentration (3x) Currently Available DataNow available at ftp://tgftp.nws.noaa.gov/SL.us008001/... ST.opnl/DF.gr2/DC.ndgd/ ST.opnl/DF.gr2/DC.ndgd/GT.mosgfs/ Operational Gridded MOS elements: • Maximum Temperature • Minimum Temperature • Temperature • Dew Point • Probability of Precipitation 06h • Probability of Precipitation 12h • Probability of Thunderstorms 03h • Probability of Thunderstorms 06h • Probability of Thunderstorms 12h • Relative Humidity • Wind Direction • Wind Speed ST.expr/DF.gr2/DC.ndgd/ Experimental Air Quality elements: • 1 hour Surface Smoke • 1 hour Vertical Smoke Integration • 1 hour Ozone Concentration (5x) • 8 hour Ozone Concentration (5x) NOAA/NWS Digital Services
Data Under DevelopmentTo be available at ftp://tgftp.nws.noaa.gov/SL.us008001/... ST.expr/DF.gr2/DC.ndgd/GT.rtma/ ST.expr/DF.gr2/DC.ndgd/GT.mosgfs/ Experimental Real-Time Mesoscale Analysis elements: • Temperature • Dew Point • Wind Direction • Wind Speed • Quantitative Precipitation • Sky Cover Experimental Gridded MOS elements: • Wind Gusts • Sky Cover • Precipitation Type • Quantitative Precipitation – 06h • Quantitative Precipitation – 12h • Snowfall Amount ST.expr/DF.gr2/DC.ndgd/GT.slosh/ Experimental Hurricane Storm-Surge Probabilities: • Probability of Exceeding 5 feet • 10 Percent Exceedance Height NOAA/NWS Digital Services
Outreach • Service Change Notification • Technical Information Notices • TIN email list • Publications • AWARE • http://www.weather.gov/os/Aware/ • Surveys • Survey for GRIB2 users: • http://www.weather.gov/survey/nws-survey.php?code=ndfd-grids • Survey for users of NDFD graphics: • http://www.weather.gov/survey/nws-survey.php?code=egf • Survey for XML SOAP service users: • http://www.weather.gov/survey/nws-survey.php?code=xmlsoap NOAA/NWS Digital Services
Support • email: nws.ndfd@noaa.gov • http://www.weather.gov/ndfd/ • Product Description Documents • Element Status Table • NDFD TINs (coming soon) NOAA/NWS Digital Services
Questions, Comments Contacts glenn.austin@noaa.gov 301-713-1858 x150 david.ruth@noaa.gov 301-713-1768 x157 NOAA/NWS Digital Services
