000 AGXX40 KNHC 270653 MIMATS Marine Weather Discussion NWS National Hurricane Center Miami FL 153 AM EST Tue Feb 27 2018 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 weakening stationary front reaches from near Panama City Florida to Brownsville Texas. Radar from the across the northern Gulf shows a few showers along and north of the frontal boundary, mainly over the northeast Gulf, and what may be light rain or drizzle in patches over the north central and northwest Gulf. Dewpoints are in the upper 60s to lower 70s over the northwest Gulf, where platforms are showing areas of fog. Light southeast winds are noted south of the front with 2 to 4 ft seas. The stationary front will dissipate through this morning. High pressure will build across the region Tue. Another, stronger cold front will move into the NW Gulf Wed night. Gale conditions are possible over the SW Gulf Thu night behind this front, while fresh to locally strong NE winds are expected N of the front over the central and NE Gulf. Seas will peak near 7-8 ft under the strongest winds. The cold front will cross the SE Gulf Fri while stalling out over the SW Gulf and weakening. The front will push SE of the SE Gulf by Fri night. High pres will then remain centered NE of the basin through the weekend. ...CARIBBEAN SEA AND TROPICAL N ATLANTIC FROM 07N TO 19N BETWEEN 55W AND 64W... High pressure north of the area centered between Bermuda and the northern Bahamas is supporting fresh to strong trade winds across the south central Caribbean and in the lee of Cuba. Moderate to fresh trade winds persist elsewhere. An upper low is centered north of the Mona Passage near 21.5N 68.5W with a sharp upper trough reaching to Nicaragua. This is supporting a few showers over Hispaniola and over portions of the northeast Caribbean. Winds will pulse to strong at night along the coast of Colombia throughout the period. Similar winds will pulse in the Windward passage, and along the SE coast of Hispaniola through Wed night. Large swell of 8-10 ft will cross the tropical Atlc zones Wed night through Fri night. A more significant swell event will affect the Atlc Passages E of 69W by late Sat, with seas to 12 ft reaching the northern exposures of the Greater Antilles E of 71W, and the Virgin Islands by Sunday. ...SW N ATLANTIC INCLUDING THE BAHAMAS... A weak pressure pattern dominates the Atlantic waters west of 50W, focuses on 1023 mb high pressure centered 28N68W, supporting gentle to light winds north of 22N and moderate trade winds south of 22N. Scattered showers and thunderstorms are active from 22N to 24N between 65W and 70W associated with an upper low near 22N66W. The high pressure will weaken and shift SE through tonight. A cold front will move off the SE coast of the U.S. today, and reach the central Bahamas Wed evening, as high pressure builds N of the front. Strong low pres N of the area will bring a cold front to area Thu night, with deteriorating conditions over the waters N of 27N. The system will support gales Fri night through Sat night N of 28N and E of 75W, with strong to near gale force winds covering much of the waters N of 22N, E of Fl and the Bahamas over the weekend. This large wind field will support a significant swell event with seas of 12 ft or greater covering all of the forecast waters outside of the Bahamas, including offshore N FL, by Sunday. $$ .WARNINGS...Any changes impacting coastal NWS offices will be coordinated through AWIPS II Collaboration Chat, or by telephone: .GULF OF MEXICO... .GMZ023...SW GULF S OF 22N W OF 94W... GALE CONDITIONS POSSIBLE Thu night. .CARIBBEAN SEA AND TROPICAL N ATLANTIC FROM 07N TO 19N BETWEEN 55W AND 64W... None. .SW N ATLANTIC INCLUDING THE BAHAMAS... .AMZ113...ATLANTIC FROM 27N TO 31N BETWEEN 70W AND 77W... GALE CONDITIONS POSSIBLE Fri night into Sat. .AMZ115...ATLANTIC FROM 27N TO 31N BETWEEN 65W AND 70W... GALE CONDITIONS POSSIBLE Fri night into Sat night. $$ *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.