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Technical Information Notice 13-10, Amended

National Weather Service Headquarters Washington, DC

719 AM EDT Thu Jul 25 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:Amended Termination of NCEPís Legacy Climate

††††††††† Diagnostic Center Products: Effective July 25, 2013

Amended to set the final effective date for Thursday, July 25 to

coincide with the operational implementation of the new



Effective Thursday, July 25, 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 July 25, 2013.

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: