000 AGXX40 KNHC 120801 MIMATS Marine Weather Discussion NWS National Hurricane Center Miami FL 401 AM EDT Mon Jun 12 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... Strong winds were noted in buoy, platform, and scatterometer data over the north central Gulf related to a large area of showers and thunderstorms. Seas were likely reaching 6 to 8 ft in this area approximately 180 nm off the Louisiana coast. The convection has dissipated over the past several hours, and winds and seas have diminished accordingly. Additional clusters of showers and thunderstorm have flared farther east, around 210 nm west of Tampa Florida. An upper trough extending across the lower Mississippi Valley into the north central Gulf will support periods of showers and thunderstorms through mid week. Southeast winds will increase over the Bay of Campeche in the far southwest Gulf tonight into Tuesday, related the landfall of T.D. Three-E on the Pacific coast of Mexico in western Oaxaca later today. Meanwhile a building ridge over the western Atlantic and persistent troughing over the western Gulf will support gentle to moderate breezes over the eastern and north central Gulf with slight seas through Fri, and moderate to fresh breezes and 3 to 5 ft seas elsewhere. Strong winds will pulse off the northwest coast of the Yucatan peninsula in the late evenings through mid week. ...CARIBBEAN SEA AND TROPICAL N ATLANTIC FROM 07N TO 19N BETWEEN 55W AND 64W... Ann ill-defined tropical wave to the s of 18N between Grand Cayman Island and western Panama will drift slowly west through the next 48 hours. The full array of model guidance suggests a surface low will develop over the southwest Caribbean near 10N80W tonight into Tue, and drift NW reaching over southern Nicaragua late this week. This low will merge into a broad area of low pressure that extends across most of Central America and the eastern Pacific, where multiple surface lows are likely to develop this week. Expect strong east winds across the Gulf of Honduras tonight, with fresh east winds across the SW Caribbean by mid week. Marine interests should prepare for large rainfall accumulations throughout Central America, and southern Mexico. A broad tropical wave over the eastern Caribbean will cross the central Caribbean through Tue and the southwest Caribbean through Thu. Otherwise, Atlc ridging north of the area will maintain fresh to strong trades through late today, with the strongest easterly flow along the coast of Colombia. The pressure gradient will relax some during the middle of the week. ...SW N ATLANTIC INCLUDING THE BAHAMAS... A weakening trough from 31N67W to 29N76W will dissipate through late today, allowing the subtropical ridge to build westward Tue and Wed and persist through late week. This will maintain gentle to moderate winds and slight seas north of 22N, and moderate to fresh trade winds south of 22N, pulsing to strong at night north of Hispaniola and near the approaches to the Windward Passage tonight. No major changes otherwise. $$ .WARNINGS...Any changes impacting coastal NWS offices will be coordinated through AWIPS II Collaboration Chat, or by telephone: .GULF OF MEXICO... None. .CARIBBEAN SEA AND TROPICAL N ATLANTIC FROM 07N TO 19N BETWEEN 55W AND 64W... None. .SW N ATLANTIC INCLUDING THE BAHAMAS... None. $$ *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 Christensen. National Hurricane Center.