000 AGXX40 KNHC 291815 MIMATS Marine Weather Discussion NWS National Hurricane Center Miami FL 115 PM EST Wed Nov 29 2017 Marine Weather Discussion for the Gulf of Mexico, Caribbean Sea, and Tropical North Atlantic from 07N to 19N between 55W and 64W and the Southwest North Atlantic including the Bahamas ...GULF OF MEXICO... A NW-SE oriented surface trough extends from the NW Gulf to the Yucatan channel. Latest scatterometer data and some ship observations indicate fresh to locally strong easterly winds over the SE gulf, and just E of the trough axis. Gentle to moderate winds are noted over the western Gulf. Seas are in the 3-5 ft range over the eastern Gulf and 2-4 ft over the western Gulf. The trough will persist near the central gulf waters through Fri, then will drift westward across the SW Gulf on Sat. A weak cold front will move into the NW Gulf Thu, and extend from Mobile, Alabama to near Tampico, Mexico on Fri. The front will stall from the Florida panhandle to Tampico, Mexico on Sat. ...CARIBBEAN SEA AND TROPICAL N ATLANTIC FROM 07N TO 19N BETWEEN 55W AND 64W... A broad trough prevails over the western Caribbean. An ASCAT pass showed the winds shift associated with the trough axis. Fresh to locally strong northerly winds are still noted within about 60 nm off the coast of Nicaragua. Scatterometer and surface data also indicate fresh to strong winds over the south-central Caribbean, with moderate to fresh winds prevailing elsewhere across the Caribbean waters as well as the tropical N Atlantic forecast zones. Seas are in the 8-10 ft range over the south central Caribbean, 5-7 ft over the north central Caribbean, and 3-5 ft elsewhere across the Caribbean. Seas of 5-7 ft prevail over the tropical N Atlantic forecast zones. The surface trough will linger over the western Caribbean the next several days. Fresh to strong winds will prevail in the south-central Caribbean through early Thursday morning before diminishing on Friday as high pressure located N of area moves SE and weakens some. ...SW N ATLANTIC INCLUDING THE BAHAMAS... High pressure prevails over the forecast waters. Latest surface observations indicate fresh to strong winds N of 26N and moderate to fresh S of 26N. Outside the Bahamas, seas are in the 5-7 ft range N of 26N, and 4-5 ft S of 26N. W of the Bahamas, 1-3 ft seas prevail. An area of moderate convection is noted from 25N to 28N between 68W and 73W in association with a dissipating shearline. A surface trough is analyzed over the SE waters and extends from 24N69W to 19N70W. A broad area of low pres is forecast to develop along the trough axis near 27N66W on Thu, then low will move NE to a position near 28N63W on Fri, and near 31N60W on Sat. A cold front will be associated with this low. Another cold front may move into the N waters Fri night, before shifting E of the area this weekend. $$ .WARNINGS...Any changes impacting coastal NWS offices will be coordinated through AWIPS II Collaboration Chat, or by telephone: .GULF OF MEXICO... None. .CARIBBEAN SEA AND TROPICAL N ATLANTIC FROM 07N TO 19N BETWEEN 55W AND 64W... None. .SW N ATLANTIC INCLUDING THE BAHAMAS... None. $$ *For detailed zone descriptions, please visit: http://www.nhc.noaa.gov/abouttafbprod.shtml#OWF Note: gridded marine forecasts are available in the National Digital Forecast Database (NDFD) at: http://www.nhc.noaa.gov/marine/grids.php For additional information, please visit: http://www.nhc.noaa.gov/marine $$ .Forecaster GR. National Hurricane Center.