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PNSWSH
Technical Implementation Notice 12-05:
Corrected
National Weather Service Headquarters
Washington DC
305 PM EST Fri Feb 3 2012
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: Corrected: Two Experimental Fire Weather Elements to be
Added to the National Digital Forecast Database for
the United States (CONUS and OCONUS), including
Alaska,
Hawaii, Guam and Puerto Rico, Effective February 15, 2012
Corrected to clearly state that this implementation
is for all CONUS and
Effective Wednesday, February 15, 2012, at
1400 Coordinated
Universal Time (UTC), Daily Maximum and
Minimum Relative
Humidity (RH) will be added to the National
Digital Forecast
Database (NDFD) on an experimental basis
for the United States
(CONUS and OCONUS), including Alaska, Hawaii,
Guam and Puerto Rico.
These two Fire Weather elements will be
added to the NDFD for
the valid times shown:
- Maximum Relative Humidity (Days 1-7)
- Minimum Relative Humidity (Days 1-7)
More details regarding these new elements
are available in the
Product Description Document (PDD) in the
online catalog of
experimental NWS products and services.
http://products.weather.gov/PDD/MaxMinRHPDD.pdf
With this implementation, these forecasts
will be available from
NDFD in the standard methods:
- GRIdded 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
Graphics
and XML services for Max/Min RH will become available within 45
days of the experimental release of GRIB2 files into NDFD.
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 and scripts in
order to access these new elements. The GRIB2 files are online
at:
ftp://tgftp.nws.noaa.gov/SL.us008001/ST.expr/DF.gr2/DC.ndfd/
and
http://weather.noaa.gov/pub/SL.us008001/ST.expr/DF.gr2/DC.ndfd/
Partners and users 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 new experimental elements. The
NDFD Maximum/Minimum Relative Humidity
elements will be labeled
experimental.
More information about accessing and using
NDFD elements is
online at:
http://ndfd.weather.gov/technical.htm
If February 15, 2012, is declared a
critical weather day, this
implementation may be postponed. In that case, users will be
notified of that decision via an updated Technical
Implementation Notice as far in advance as
possible.
Comments and feedback on the experimental
Maximum/Minimum
Relative Humidity NDFD elements will be
accepted through August
31, 2012. Links to online surveys for NDFD users are:
GRIB2 users:
http://www.weather.gov/survey/nws-survey.php?code=ndfd-grids
Users OF XML SOAP service:
http://www.weather.gov/survey/nws-survey.php?code=xmlsoap
NDFD online graphics:
http://www.weather.gov/survey/nws-survey.php?code=gfp
These new Maximum/Minimum Relative Humidity
elements will remain
experimental until NWS assesses feedback and completes a
technical analysis. At that time, the NWS will
determine
whether to move these experimental elements to operational
status,
discontinue them, or revise and retain them as
experimental elements.
For questions regarding these products,
please contact:
Heath Hockenberry
National Fire Weather Program Manager
NOAA/NWS Office of Climate, Water and Weather Services
Boise, ID
For general questions regarding NDFD data,
please email:
NWS.NDFD@noaa.gov
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:
Robyn Heffernan
Fire
Weather Science and Dissemination Meteorologist
NOAA/NWS Office of Climate, Water and Weather Services
Boise, ID
Technical Implementation Notices
specifically related to NDFD
are online at:
http://www.weather.gov/ndfd/tins.htm
National Technical Implementation Notices
are online at:
http://www.weather.gov/os/notif.htm
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