NOUS41 KWBC 191106 AAB



Technical Information Notice 13-10, Amended

National Weather Service Headquarters Washington, DC

705 AM EDT Fri Jul 19 2013


To:       Subscribers:

          -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:  Amended Termination of NCEP's Legacy Climate

          Diagnostic Center Products: Effective July 30, 2013


Amended to set the final effective date to Tuesday, July 30, 2013


Effective Tuesday, July 30, 2013, the National Centers for

Environmental Prediction (NCEP) will stop producing legacy

Climate Diagnostic Center (CDC) ensemble-based precipitation and

surface temperature grids and disseminating them via the NCEP

server. These products are not available via NOAAPORT.


A Public Information Statement was issued on March 4, 2013

requesting comments on the proposed termination of these



Based on responses received, NWS will terminate the CDC products

no later than July 30, 2013.  The removal date may occur earlier

if the NWS transition to the new supercomputing system happens

prior to July 30.  A revised TIN will be issued to announce the

revised termination date if necessary. 


The CDC products use an early global atmospheric version of the

Climate Data Analysis System (CDAS) with a resolution of T62 and

28 model layers.  This is followed by a 15 member (control with 7

pairs) ensemble forecast, run at the 00Z cycle only.  Forecasts

for precipitation and 995mb temperature out to 360 hours are

posted on the NCEP server at:




These products have become obsolete and users should use

the current operational output from the CDAS and Global

Ensemble Forecast System (GEFS).  More details about the

products available from these systems is available at:


If you have questions about this termination, please



   John Derber

   NWS/NCEP Environmental Modeling Center

   College Park, MD


   Rebecca Cosgrove

   NWS/NCEP Central Operations

   College Park, MD


National Public Information Statements are online at: