000 AGXX40 KNHC 201701 MIMATS Marine Weather Discussion...UPDATED NWS National Hurricane Center Miami FL 101 PM EDT Mon Mar 20 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 1023 mb high over the central Gulf will become centered over the NE Gulf through Tuesday, then will retrograde back to the central Gulf on Wednesday. Then, the high will become re- centered to the northeast of the area Thursday as stronger high pressure builds across the eastern United States. Light winds will prevail under the high center the next two days, with mainly moderate to fresh winds elsewhere. The exception will be nightly strong winds over the eastern Bay of Campeche and tonight over the eastern portion of the Yucatan Channel. Once the stronger high builds northeast of the Gulf later this week, fresh to strong east to southeast winds will dominate the Gulf basin with seas ranging from 4 to 6 ft over the eastern gulf, to 6 to 9 ft over the western Gulf. ...CARIBBEAN SEA AND TROPICAL N ATLANTIC FROM 07N TO 19N BETWEEN 55W AND 64W... A frontal trough extending from eastern Cuba to the NE corner of Nicaragua will dissipate through tonight. Another surface trough over the eastern Caribbean will move west while weakening through Tuesday. High pressure over the Gulf of Mexico will support fresh to strong winds over the Lee of Cuba and the Windward Passage through Tuesday. Fresh to strong winds will also pulse each night near the coast of northeast Colombia. Late this week, strong high pressure building north of the region will support strong to near gale northeast winds over the north central Caribbean, from the Lee of Cuba, to south of Hispaniola. Large swell generated by a strong wind field over the western Atlantic will propagate through the Atlantic Passages across the northern Caribbean over the upcoming weekend. ...SW N ATLANTIC INCLUDING THE BAHAMAS... A cold front from Bermuda to the Florida Straits will merge with a dissipating front from 24N65W to eastern Cuba later today. Strong to near gale force winds will continue north of 26N within a couple hundred nm east of the front and several hundred nm west of the front through the afternoon. The stronger winds will shift northeast of the zones tonight with the front. Swell of 8 to 12 ft will continue through tonight northeast of the Bahamas, and will diminish through the day Tuesday before dropping below 8 ft Tuesday night. The southern portion of the front will stall out over the southern zones on Tuesday. High pressure will briefly build over the northwest waters Monday night through Tuesday night. A new cold front will approach the northwest waters Tuesday night with strong southwest to west winds developing over those zones. The cold front will cross the northwest waters on Wednesday, reaching from 28N65W to south Florida on Thursday, then reaching the southern zones by Friday. Strong high pressure north of the front will support strong northeast to east winds across most of the forecast area through at least Friday night, with seas of 8 to 14 ft outside of the Bahamas. $$ .WARNINGS...Any changes impacting coastal NWS offices will be coordinated through AWIPS II Collaboration Chat, or by telephone: .GULF OF MEXICO... None. .CARIBBEAN SEA AND TROPICAL N ATLANTIC FROM 07N TO 19N BETWEEN 55W AND 64W... None. .SW N ATLANTIC INCLUDING THE BAHAMAS... None. $$ *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 Latto. National Hurricane Center.