1. NOAA/NWS Digital Services 1 National Weather Service Forecast 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

2. NOAA/NWS Digital Services 2 National Digital Forecast Database GOAL: Make NWS information available electronically in digital form. HISTORY: NDFD has been operational since 2004.

3. NOAA/NWS Digital Services 3 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

4. NOAA/NWS Digital Services 4 Geographic Domains CONUS Mosaic 16 pre-defined sectors User-defined areas OCONUS Alaska Hawaii Guam Puerto Rico/V.I.

5. NOAA/NWS Digital Services 5 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

6. NOAA/NWS Digital Services 6 NDFD Status Now available at ftp://tgftp.nws.noaa.gov/SL.us008001/... 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 ST.opnl/DF.gr2/DC.ndfd/ST.expr/DF.gr2/DC.ndfd/ Note: Six Alaska NDFD elements are currently experimental.

7. NOAA/NWS Digital Services 7 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

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12. NOAA/NWS Digital Services 12 Products Under Development To 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/

13. NOAA/NWS Digital Services 13 Products Under Development To 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/

14. NOAA/NWS Digital Services 14 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

15. NOAA/NWS Digital Services 15 National Digital Guidance Database

16. NOAA/NWS Digital Services 16 Currently Available Data Now available at ftp://tgftp.nws.noaa.gov/SL.us008001/... Operational Air Quality elements: 1 hour Ozone Concentration (3x) 8 hour Ozone Concentration (3x) 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 Experimental Air Quality elements: 1 hour Surface Smoke 1 hour Vertical Smoke Integration 1 hour Ozone Concentration (5x) 8 hour Ozone Concentration (5x) ST.opnl/DF.gr2/DC.ndgd/ ST.expr/DF.gr2/DC.ndgd/ ST.opnl/DF.gr2/DC.ndgd/GT.mosgfs/

17. NOAA/NWS Digital Services 17 Data Under Development To be available at ftp://tgftp.nws.noaa.gov/SL.us008001/... 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.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 Hurricane Storm- Surge Probabilities:  Probability of Exceeding 5 feet  10 Percent Exceedance Height ST.expr/DF.gr2/DC.ndgd/GT.slosh/

18. NOAA/NWS Digital Services 18 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

19. NOAA/NWS Digital Services 19 Support email: nws.ndfd@noaa.gov http://www.weather.gov/ndfd/ –Product Description Documents –Element Status Table –NDFD TINs (coming soon)

20. NOAA/NWS Digital Services 20 Contacts glenn.austin@noaa.gov 301-713-1858 x150 david.ruth@noaa.gov 301-713-1768 x157 Questions, Comments