NOUS41 KWBC 091805



Service Change Notice 17-117

National Weather Service Headquarters, Silver Spring, MD

205 PM EST Thu Nov 9 2017


To:       Subscribers:

          -NOAA Weather Wire Service

          -Emergency Managers Weather Information Network


          Other NWS Partners and Employees


FROM:     Allison Allen

          Chief, Marine, Tropical, and Tsunami Services Branch


SUBJECT:  Transition to operational status of offshore and high

          seas gridded forecasts from the NHC TAFB and

          the offshore gridded forecasts from the OPC in

          the Atlantic Basin effective December 12, 2017.


Effective Tuesday, December 12, 2017, the experimental offshore

and high seas gridded forecasts from the Tropical Analysis and

Forecast Branch (TAFB) of the National Hurricane Center (NHC),

and the offshore gridded forecasts from the Ocean Prediction

Center (OPC), will transition to operational in the Atlantic

Basin.  The five elements transitioning to operational are:


-10-meter wind speed

-10-meter wind direction

-10-meter wind gusts

-significant wave height

-marine hazards.


Transitioning these forecasts to operational status is another

milestone for the NWS National Digital Forecast Database (NDFD). 

Users do not need to take any action when the experimental

forecasts transition to operational status. Gridded forecasts

from TAFB and OPC over the Pacific Basin, and from OPC in the

rest of its high seas domain over the Atlantic, will remain

experimental. Another Service Change Notice (SCN) will be issued

when they are ready to move to operational status.


For details on this product, please see:


Until December 12, 2017, the gridded forecasts are online at:


On December 12, 2017 these URLs will change to:


The gridded forecasts can also be found at:


For more information, please contact:


Richard May

Marine Meteorologist

NWS Headquarters, Silver Spring, MD 20910

(301) 427-9378


Eric Christensen

Acting Operations Branch Chief

NHC Tropical Analysis and Forecast Branch, Miami, FL 33165

(305) 229-4454


Darin Figurskey

Operations Branch Chief

Ocean Prediction Center, College Park, MD  20740

(301) 683-1497


National Service Change Notices are online at: