NOUS41 KWBC 091836



Technical Information Notice 13-10

National Weather Service Headquarters Washington, DC

235 PM EDT Thu May 9 2013


To:†††††† Subscribers:

††††††††† -Family of Services

††††††††† -NOAA Weather Wire Service

†††††††† -Emergency Managers Weather Information Network

††††††††† -NOAAPORT

††††††††† Other NWS Partners, Users and Employees


From:†††† John Derber, Acting Chief

††††††††† Global Climate and Weather Modeling Branch

††††††††† NCEP/Environmental Modeling Center

Subject:Termination of NCEPís Legacy Climate

††††††††† Diagnostic Center Products: Effective July 2013


Effective no later than Tuesday, July 16, 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 16, 2013.The removal date may

occur earlier if the NWS transition to the new

supercomputing system happens prior to July 16.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




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: