000 AGXX40 KNHC 100625 MIMATS Marine Weather Discussion NWS National Hurricane Center Miami FL 125 AM EST Wed Jan 10 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... Low pressure centered near 26N87W extends a dissipating cold front to the Yucatan Peninsula, with a pair of troughs rotating around the low to the W and N. Latest surface observations indicated mainly gentle to moderate winds across the basin, except locally fresh in the coastal waters N of 28N and E of 90W. Seas are mainly 2-4 ft across the basin. The low will drift S-SW dissipating to a remnant trough later today. A progressive weather pattern follows as high pressure builds across the area tonight, and retreats eastward Thursday, enabling another cold front to move into the NW Gulf by Thursday night. The front will rapidly shift across the forecast waters Friday, with fresh to strong NW-N winds behind the front, and minimal gale force winds possible over the western Gulf Thursday night through Friday morning. A reinforcing front will move through the eastern Gulf late Friday night into early Saturday, with high pressure building in from Texas this weekend. The high will shift eastward across the SE U.S. by early Mon, with the next cold front possibly approaching the NW Gulf Mon night. ...CARIBBEAN SEA AND TROPICAL N ATLANTIC FROM 07N TO 19N BETWEEN 55W AND 64W... A surface trough extends from central Cuba southward along 82W to the SW Caribbean. Latest surface observations indicate gentle to moderate winds W of the trough, with moderate to fresh trades E of the trough including in the Tropical N Atlantic zones, except locally strong NW of Colombia. Seas are in the 2-4 ft range W of the trough, and 5-8 ft E of the trough, with 7-9 ft in the Tropical N Atlantic. The trough is forecast to move W-NW through Thursday as high pressure over the central Atlantic builds down across the area in its wake. Trades will increase to fresh to strong across the waters E of 72W Thursday afternoon and night, building seas to 6-9 ft. The pressure gradient will gradually weaken thereafter allowing for winds and seas to diminish and subside as a cold front approaches from the NW. The cold front will move SE of the Yucatan Channel Friday night. Model guidance hints at brief gale force winds offshore of the Mexican portion of the Yucatan Peninsula S of the Yucatan Channel behind the front Friday evening which will need to be monitored. The front will then gradually stall from eastern Cuba to across Jamaica to the SW Caribbean along 80W by the early part of next week. Expect an initial surge of NW-N fresh to strong winds behind the front, becoming reinforced through early next week as high pressure builds in across Central America. Winds will approach minimal gale force offshore of Nicaragua Sunday night into early Monday, with seas building to 8-12 ft across the waters W of the front. ...SW N ATLANTIC INCLUDING THE BAHAMAS... A surface trough extends from N to S across the western Bahamas to central Cuba. Latest surface observations indicate fresh to strong winds N of 27N and W of 70W, with seas of 6-10 ft. Winds are mainly moderate to fresh elsewhere across the basin, locally strong just N of Hispaniola, with seas in the 5-8 ft range, except 7-9 ft E of 65W. The trough is forecast to gradually shift NW through Thursday, moving inland over the SE U.S. Thursday night as high pressure over the central Atlantic builds in its wake. Fresh to strong return flow will then dominate as the high builds in, diminishing briefly in the central portion on Friday. The next cold front will move into the NW waters late Friday night into Saturday, weakening the pressure gradient across the basin. The front will slow and should remain W of 70W through the upcoming weekend, with moderate to fresh northerly flow initially behind it, increasing to fresh to strong S of 27N Sunday night as the gradient tightens there. $$ .WARNINGS...Any changes impacting coastal NWS offices will be coordinated through AWIPS II Collaboration Chat, or by telephone: .GULF OF MEXICO... .GMZ011...NW GULF INCLUDING STETSON BANK... Gale Warning Thu night. GALE CONDITIONS POSSIBLE Thu night into Fri. .GMZ013...N CENTRAL GULF INCLUDING FLOWER GARDEN BANKS MARINE SANCTUARY... Gale Warning Thu night. GALE CONDITIONS POSSIBLE Fri. .GMZ017...W CENTRAL GULF FROM 22N TO 26N W OF 94W... Gale Warning Thu night. GALE CONDITIONS POSSIBLE Fri. .GMZ019...CENTRAL GULF FROM 22N TO 26N BETWEEN 87W AND 94W... GALE CONDITIONS POSSIBLE Thu night into Fri. .GMZ023...SW GULF S OF 22N W OF 94W... Gale Warning Thu night. GALE CONDITIONS POSSIBLE Fri. .CARIBBEAN SEA AND TROPICAL N ATLANTIC FROM 07N TO 19N BETWEEN 55W AND 64W... .AMZ029...W CENTRAL CARIBBEAN FROM 11N TO 15N W OF 80W... GALE CONDITIONS POSSIBLE Sun into Sun night. .SW N ATLANTIC INCLUDING THE BAHAMAS... None. $$ *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 Lewitsky. National Hurricane Center.