Public Information Statement
Issued by NWS National HQ

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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: is the U.S. government's official web portal to all federal, state and local government web resources and services.