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NWS Forecast Evolution and Delivery in a Digital Era Glenn Austin Office of Climate, Water, and Weather Services David Ruth Office of Science and Technology Silver Spring, MD June 6, 2006. National Digital Forecast Database.

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slide1
NWS Forecast

Evolution and Delivery

in a

Digital Era

Glenn Austin

Office of Climate, Water, and Weather Services

David Ruth

Office of Science and Technology

Silver Spring, MD

June 6, 2006

NOAA/NWS Digital Services

national digital forecast database
National Digital Forecast Database
  • GOAL: Make NWS information available in digital form and available electronically.
  • HISTORY: NDFD has been operational since 2004.

NOAA/NWS Digital Services

grid availability
Grid Availability
  • Data posted in WMO GRIB2 format at:
    • ftp://tgftp.nws.noaa.gov/SL.us008001/...
  • Decoder software:
    • Link: 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
  • Discussions underway with UNIDATA to host data

NOAA/NWS Digital Services

ndfd status now available at ftp tgftp nws noaa gov sl us008001
Experimental elements:

QPF

Snow Amount

Sky Cover

Significant Wave Height

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/

NOAA/NWS Digital Services

summer releases
Summer Releases
  • TPC Probability of Tropical Cyclone Wind Speeds (July)(TIN-xx issued June x)
  • Experimental Real-Time Mesoscale hourly Analysis (August)(TIN-24 issued May 2)
  • Day 1-3/4-7 file split (September)(TIN-30 issued May 9)

NOAA/NWS Digital Services

national digital forecast database to be available at ftp tgftp nws noaa gov sl us008001
National Digital Forecast DatabaseTo be available at ftp://tgftp.nws.noaa.gov/SL.us008001/...

Developmental elements (from WFOs):

  • Hazard grids
  • Wind gusts
  • Maximum Relative Humidity
  • Minimum Relative Humidity

ST.expr/DF.gr2/DC.ndfd/

NOAA/NWS Digital Services

national digital forecast database to be available at ftp tgftp nws noaa gov sl us0080011
National Digital Forecast DatabaseTo be available at ftp://tgftp.nws.noaa.gov/SL.us008001/...

Developmental elements (from TPC):

  • Probability of Tropical Cyclone Wind Speeds >34kt (incremental)
  • Probability of Tropical Cyclone Wind Speeds >34kt (cumulative)
  • Probability of Tropical Cyclone Wind Speeds >50kt (incremental)
  • Probability of Tropical Cyclone Wind Speeds >50kt (cumulative)
  • Probability of Tropical Cyclone Wind Speeds >64kt (incremental)
  • Probability of Tropical Cyclone Wind Speeds >64kt (cumulative)

ST.expr/DF.gr2/DC.ndfd/

NOAA/NWS Digital Services

tropical cyclone surface wind speed probability hurricane wilma oct 2005
Tropical Cyclone Surface Wind Speed ProbabilityHurricane Wilma – Oct 2005

NOAA/NWS Digital Services

national digital forecast database to be available at ftp tgftp nws noaa gov sl us0080012
National Digital Forecast DatabaseTo be available at ftp://tgftp.nws.noaa.gov/SL.us008001/...

Developmental 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

national digital forecast database to be available at ftp tgftp nws noaa gov sl us0080013
National Digital Forecast DatabaseTo be available at ftp://tgftp.nws.noaa.gov/SL.us008001/...

Developmental elements (from CPC):

  • Probability of 8-14 Day Temperature Above Normal
  • Probability of 8-14 Day Temperature Below Normal
  • Probability of 8-14 Day Precipitation Above Normal
  • Probability of 8-14 Day Precipitation Below Normal
  • Probability of 30 Day Temperature Above Normal
  • Probability of 30 Day Temperature Below Normal
  • Probability of 30 Day Precipitation Above Normal
  • Probability of 30 Day Precipitation Below Normal
  • Probability of 90 Day Temperature Above Normal
  • Probability of 90 Day Temperature Below Normal
  • Probability of 90 Day Precipitation Above Normal
  • Probability of 90 Day Precipitation Below Normal

ST.expr/DF.gr2/DC.ndfd/

NOAA/NWS Digital Services

national digital guidance database now available at ftp tgftp nws noaa gov sl us008001
Operational Air Quality elements:

1 hour Ozone Concentration (3x)

8 hour Ozone Concentration (3x)

National Digital Guidance DatabaseNow available at ftp://tgftp.nws.noaa.gov/SL.us008001/...

ST.opnl/DF.gr2/DC.ndgd/

ST.expr/DF.gr2/DC.ndgd/GT.mosgfs/

Experimental 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

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

ozone for full conus
Ozone for full CONUS

NOAA/NWS Digital Services

national digital guidance database to be available at ftp tgftp nws noaa gov sl us008001
National Digital Guidance DatabaseTo 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 Direction
  • Wind Speed
  • 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

ndfd capabilities in development
NDFD Capabilities in Development
  • Day 1-3/Day 4-7 file split
  • XML to query which grids have changed by element, projection, and WFO
  • Experimental grids for Alaska
  • Hourly grids on day 1
  • 2.5 km grids
  • Analysis of Record
  • Probability grids that quantify uncertainty

NOAA/NWS Digital Services

technical workshop for digital product users
Technical Workshop for Digital Product Users
  • PROPOSED DATE: November 2006
  • LOCATION: Silver Spring, MD

NOAA/NWS Digital Services

questions comments
Questions, Comments?

glenn.austin@noaa.gov

301-713-1858 x150

david.ruth@noaa.gov

301-713-1768 x157

http://weather.gov/ndfd/

NOAA/NWS Digital Services