NOUS41 KWBC 151339
Technical Implementation Notice 13-08
National Weather Service Headquarters Washington, DC
940 AM EDT Fri Mar 15 2013
-Family of Services
-NOAA Weather Wire Service
-Emergency Managers Weather Information Network
Other NWS Partners, Users and Employees
From: John Derber, Acting Chief
Global Climate and Weather Modeling Branch
NCEP/Environmental Modeling Center
Subject: Termination of Select Global Forecast
System (GFS) Low-Resolution Products:
Effective April 16, 2013
Effective Tuesday, April 16, 2013, with the 1200 Universal
Coordinated Time (UTC) cycle, the National Centers for
Environmental Prediction (NCEP) will stop producing some legacy
low-resolution gridded products from the Global Forecast System
(GFS), and stop disseminating them via NOAAPORT and the NWS ftp
A Public Information Statement was issued on January 22, 2013,
requesting comments on the proposed termination of multiple
legacy GFS low-resolution products.
Based on responses received, NWS will terminate some of the
products proposed for removal. Listed below are the gridded
products available on NOAAPORT and the NWS FTP server that will
be removed on April 16, 2013.
Grid Resolution Area Map Projection
Family of Service (FOS) grids
#21 5x2.5 0-180E, 0-90N latitude/longitude
#22 5x2.5 180W-0, 0-90N latitude/longitude
#23 5x2.5 0-180E, 90S-0 latitude/longitude
#24 5x2.5 180W-0, 90S-0 latitude/longitude
#25 5x5 0-355E, 0-90N latitude/longitude
#26 5x5 0-355E, 90S-0 latitude/longitude
Products available at 0000 and 1200 cycles for forecast hours 00
to 72, and for 0000 cycle out to 240. Products disseminated via
NWS FTP server only -- not on NOAAPORT.
#37 1.25x1.25 0-90N, 330-60E latitude/longitude
#39 1.25x1.25 0-90N, 150-240E latitude/longitude
#40 1.25x1.25 0-90N, 240-330E latitude/longitude
Products available for 00Z cycle only, forecast hours 96,
120, 144 and 168.
#202 190.5 km CONUS Polar Stereographic
#203 190.5 km Alaska Polar Stereographic
Products available 0000, 0600, 1200, 1800 cycles for
forecast hours 00 to 120, every 6 hours, for 0000 cycle
out to 240 hours.
#204 160 km Hawaii Mercator
#205 190.5 km Puerto Rico Polar Stereographic
Products available 0000 cycle for forecast hours 00 to
#201 381 km N. Hemisphere Polar Stereographic
All GRIB1 AWIPS grid #201 products will be removed. This
includes the dataset known as "gfsLR" in AWIPS.
Note: The GRIB2 AWIPS grid #201 dataset will not be removed.
This is the dataset known as "gfs360" in AWIPS.
More information about the grids listed above is available at
The WMO headers for products to be removed are listed at:
A catalog of GFS output products and their availability on
multiple ftp servers can be found at
If you have questions about this termination, please contact:
NWS/NCEP Environmental Modeling Center
College Park, MD
NWS/NCEP Central Operations
College Park, MD
National Public Information Statements are online at: