NOUS41 KWBC 161700



Technical Implementation Notice 11-25

National Weather Service Headquarters Washington DC

100 PM EDT Thu Jun 16 2011


To:      Subscribers:

         - Family of Services

         - NOAA Weather Wire Service

         - Emergency Managers Weather Information Network

         - NOAAPORT

         Other NWS Partners and NWS Employees


From:    Eli Jacks

         Chief, Fire and Public Weather Services Branch


Subject: Transition to Operational Status of Two Fire

         Weather Outlook Elements in NDFD for CONUS Only:

         Effective July 14, 2011


Effective Thursday, July 14, 2011, at 1400 Coordinated

Universal Time (UTC), NWS will transition two Fire Weather Outlook elements in the National Digital Forecast Database (NDFD) from experimental to operational status.  These elements are produced over the Conterminous United States (CONUS) only by the Storm Prediction Center (SPC) of the National Centers for

Environmental Prediction (NCEP).


These two Fire Weather Outlook elements are available over

the NDFD CONUS sector and the 16 pre-defined NDFD CONUS

subsectors for the valid times shown:


- Fire Weather Critical and Extremely Critical Areas
  (Days 1-7)


- Fire Weather Critical Areas for Dry Thunderstorms

  (Days 1-3)


More information regarding these elements is available in

A Product Description Document (PDD):


With this implementation, these forecast elements will be

available from NDFD in the standard methods:


- GRIidded Binary version 2 (GRIB2) files via Hypertext

  Transfer Protocol (HTTP) and File Transfer Protocol (FTP)

- eXtensible Markup Language (XML) via Simple Object

  Access Protocol (SOAP)

- Graphics via web browser


Users who pull NDFD elements in GRIB2 format, either via the

Internet or via the Family of Services (FOS) server access

service, may need to update their procedures or scripts.


For users who key on the World Meteorological Organization (WMO) super heading to access NDFD elements, the list of super headings for SPC elements is online at:


Those who use the NDFD in XML via web service or the

online graphical NDFD images can use the same methods they

currently use to acquire these elements.


More information about accessing these elements using all of

the standard NDFD access methods is online at:


Information on accessing and using NDFD elements is 
online at:


If July 14, 2011, is declared a critical weather day, this

implementation may be postponed. Users will be notified of that decision via an updated Technical Implementation Notice (TIN) as far in advance as possible.


For questions regarding these products, please contact:


    Dr. Phillip Bothwell

    Senior Development Meteorologist

    NOAA/NWS Storm Prediction Center

    Norman, Oklahoma


For general questions regarding NDFD data, please email:


For technical questions regarding NDFD data, please contact:


    David Ruth

    Mesoscale Prediction Branch Chief

    NOAA/NWS Office of Science and Technology

    Silver Spring, Maryland


For questions regarding this notice, please contact:


    Kevin Scharfenberg

    Severe Storms Services Coordinator

    NOAA/NWS Office of Climate, Water, and Weather Services

    Silver Spring, Maryland


TINs specifically related to NDFD are online at:


National TINs are online at: