000 AGXX40 KNHC 210735 MIMATS Marine Weather Discussion NWS National Hurricane Center Miami FL 235 AM EST Thu Jan 21 2021 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 over the northeast Gulf will shift southeast today. A trailing surface ridge will move into the southern Gulf through Fri ahead of a cold front moving into the northern Gulf by late Fri. The front will stall across the northern Gulf Fri night, then dissipate through Sat night. High pressure building north of front over the Carolinas will support increase SE winds and building seas across the western Gulf Sat into Sun, with strong SE winds possible in the northwest Gulf by Sun night as low pressure forms over northern Mexico. Winds and seas diminish across the Gulf into Mon as the high shifts farther east and a weak cold front moves into the coastal waters of Texas through Mon night. ...CARIBBEAN SEA AND TROPICAL N ATLANTIC FROM 07N TO 19N BETWEEN 55W AND 64W... High pressure centered in the Gulf of Mexico is supporting fresh to strong winds over much of the Caribbean W of 70W, to include the Windward Passage, with winds pulsing to gale force off Colombia. Winds and seas over the northwest Caribbean and Windward Passage will diminish through tonight as the high pressure weakens and moves into the Bahamas, although this pattern will still support strong to near-gale force winds off Colombia, briefly pulsing to gale force tonight and possibly Fri night and Sat night. The high pressure weakens through Sat, but little change is expected into early next week as stronger higher pressure farther north. ...SW N ATLANTIC INCLUDING THE BAHAMAS... A cold front from 30N65W to 29N70W to northeast Florida will shift southeastward to along 27N by this evening, then move east of the area tonight. Another front will move south into the waters between Bermuda and northeast Florida Fri evening, reaching along 27N by Sat evening, along 23N east of the Turks and Caicos Islands by Sun evening, then stalling along 20N off the coast of the Dominican Republic by Mon evening. High pressure will build over the area in the wake of this front. $$ .WARNINGS...Any changes impacting coastal NWS offices will be coordinated through AWIPS II Collaboration Chat, or by telephone: .GULF OF MEXICO... None. .CARIBBEAN SEA AND TROPICAL N ATLANTIC FROM 07N TO 19N BETWEEN 55W AND 64W... .AMZ031...CARIBBEAN FROM 11N TO 15N BETWEEN 72W AND 80W INCLUDING COLOMBIA BASIN... Gale Warning tonight. Gale Warning Fri night. GALE CONDITIONS POSSIBLE Sat night. GALE CONDITIONS POSSIBLE Sun night. .SW N ATLANTIC INCLUDING THE BAHAMAS... None. $$ *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 Christensen. National Hurricane Center.