000 AGXX40 KNHC 140609 MIMATS Marine Weather Discussion NWS National Hurricane Center Miami FL 209 AM EDT Fri Apr 14 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... High pressure ridging prevails across the U.S. Gulf Coast states. A weak surface trough is in the Florida coastal waters with another weak trough in the central Gulf waters. Latest satellite derived winds and seas along with ship, buoy, and CMAN data depict moderate to locally fresh easterly flow N of 22N along with seas of 3-5 ft, except 2-3 ft in the NE Gulf. A thermal trough has developed over the Yucatan Peninsula with fresh to strong N-NE flow offshore to the west of the peninsula. High pressure will continue to prevail over the U.S. Gulf Coast states through the next several days. A thermal trough will continue to develop each evening over the Yucatan peninsula. This trough will shift westward into the southwest Gulf each night where it will dissipate each morning. Marine conditions will not change much through early next week, except in the SE Gulf and through the Straits of Florida where an easterly wind surge will develop Saturday evening into early Sunday. ...CARIBBEAN SEA AND TROPICAL N ATLANTIC FROM 07N TO 19N BETWEEN 55W AND 64W... Latest satellite derived winds and seas along with ship, buoy, and CMAN data depict fresh to strong winds NW of the coast of Colombia and in the lee of central Cuba, with moderate trades elsewhere, except gentle in the eastern Caribbean. Seas are in the 5-8 ft range over the south central Caribbean, 3-5 ft over the remainder of the Caribbean waters, except 2-4 ft in the eastern Caribbean, and 4-6 ft primarily in NE swell over the tropical north Atlantic forecast waters. Winds will continue to pulse to strong over the south central Caribbean through the forecast period. High pressure building north of the area will tighten the pressure gradient over the forecast waters this weekend. This will result in pulsing winds to fresh to strong in the lee of Cuba, across the approach to the Windward Passage, and S of the Dominican Republic. The pressure gradient will weaken slightly early next week allowing for winds to diminish. ...SW N ATLANTIC INCLUDING THE BAHAMAS... Low pressure and associated trough prevail over the eastern waters while high pressure prevails over the western waters. Latest satellite derived winds and seas along with ship, buoy, and CMAN data depict fresh to strong winds over the N central and NE waters, and gentle to moderate winds elsewhere. Seas are in the 8-11 ft range over the northeast waters, 4-7 ft elsewhere outside the Bahamas, and 1-3 ft W of the Bahamas. The low will has been meandering but will final start to shift NE of the area through today while high pressure surges down from the N through tonight. A very tight pressure gradient will develop in the wake of the low, with fresh to strong NE-E flow prevailing by tonight through Saturday, shifting S of 27N Saturday night through Sunday. The pressure gradient will then weaken Sunday night through early next week as the parent high settles S. $$ .WARNINGS...Any changes impacting coastal NWS offices will be coordinated through AWIPS II Collaboration Chat, or by telephone: .GULF OF MEXICO... None. .CARIBBEAN SEA AND TROPICAL N ATLANTIC FROM 07N TO 19N BETWEEN 55W AND 64W... None. .SW N ATLANTIC INCLUDING THE BAHAMAS... None. $$ *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 Lewitsky. National Hurricane Center.