NOUS41 KWBC 041446



Service Change Notice 13-69

National Weather Service Headquarters Washington DC

935 AM EST Mon Nov 4 2013


To:†††††† Subscribers:

††††††††† -Family of Services

††††††††† -NOAA Weather Wire Service

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

††††††††† -NOAAPORT

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


From:†††† Mark Tew

††††††††† Chief, Marine and Coastal Weather Services Branch


Subject:Experimental Web Based Graphicast Product To Transition

††††††††† From Experimental Status to Operational Status

††††††††† Effective December 10, 2013


Effective Tuesday December 10, 2013, the National Hurricane

Centerís Tropical Analysis and Forecast Branch (TAFB) will

transition its Web Based Graphicast of event-driven significant

marine weather for its offshore and high seas areas of

responsibility from experimental to operational status.These

forecast parameters may include:


Surface (10-m) winds

Significant wave heights

Primary swell height, period and direction

Mean Sea Level Pressure (MSLP) of synoptic scale features

Warning Hazard Areas (Gale, Storm, Hurricane Force)


Volcanic ash

Significant precipitation


This product will continue to be generated by TAFB daily at

approximately 0000 Universal Coordinated Time (UTC) and posted to

the National Hurricane Center website:


A comprehensive description of the gridded marine forecast

product is posted at:


If you have comments or questions please contact:


Hugh Cobb

Chief, Tropical Analysis and Forecast Branch

National Hurricane Center



National Public Information Statements are online at: