000 AGXX40 KNHC 111700 MIMATS Marine Weather Discussion NWS National Hurricane Center Miami FL 100 PM EDT Sun Jun 11 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 surface trough from 28N83W to 26N92W is drifting W-NW and is accompanied by SCT RW/ISOL TS across the gulf waters to the N of 25N and E of 92W. Building high pressure from the E results in a band of fresh to locally strong E to SE winds, and 4-7 ft seas across the SE waters. These conditions will spread NW in the wake of the previously mentioned northwestward moving trough that should reach the N-central coastal plains on Mon. E winds will briefly pulse to a strong breeze along the NW Yucatan Peninsula on Mon night. The pressure gradient will begin to relax late Mon night, with moderate to fresh return flow, and 3 to 6 ft seas expected on Tue. Gentle to moderate return flow, and 2 to 3 ft seas are forecast on Wed and Thu. ...CARIBBEAN SEA AND TROPICAL N ATLANTIC FROM 07N TO 19N BETWEEN 55W AND 64W... Ann ill-defined tropical wave to the s of 16N along 77W is drifting w and is expected to stall over the far SW Caribbean on Mon. The full array of model guidance suggests a surface low will develop over the SW Caribbean near 11N81W on Mon night into Tue, and drift NW reaching over E Nicaragua late this week. This low will merge into a broad area of low pressure that extends across most of Central America and the EPAC, where multiple surface lows are likely to develop this week. Expect strong e winds across the Gulf of Honduras tonight and on Mon night, with fresh e winds across the SW Caribbean by mid week. Marine Interests should prepare for large rainfall accumulations throughout Central America, and Eastern Mexico. A broad tropical wave is interacting with an upper cyclone located just N of the Mona Passage, and complicating the low level tracking of the wave. The latest position is along 58W with the wave expected to slowly pass through the Windward Islands tonight, reach the Central Caribbean during mid-week, and reach the SW Caribbean late in the week. ISOL RW/TS expected across the E Caribbean for at least another day. Otherwise, Atlc ridging N of the area will maintain fresh to strong trades through late Mon, with the strongest easterly flow along the NW coast of Colombia, and extending W to near 13N79W. The pressure gradient will relax some during the middle of the week. ...SW N ATLANTIC INCLUDING THE BAHAMAS... The remnants of a frontal trough are still evident across the far NW waters. The trough will continue to weaken and drift W-NW through late Mon. There is some evidence of a surface low developing just n of the area near 32N66W, with a trough extending sw to near 28N73W. This second trough will gradually dissipate as the low moves ne and weakens. An E to W ridge currently from 30N58W to Port Canaveral Fl will shift N and extend from E to W along 28.5N on Wed night into Thu. Fresh trades are forecast S of 22N this week, except becoming locally strong along the N coast of Hispaniola and across the Atlc approach to the Windward Passage. $$ .WARNINGS...Any changes impacting coastal NWS offices will be coordinated through AWIPS II Collaboration Chat, or by telephone: .GULF OF MEXICO... None. .CARIBBEAN SEA AND TROPICAL N ATLANTIC FROM 07N TO 19N BETWEEN 55W AND 64W... None. .SW N ATLANTIC INCLUDING THE BAHAMAS... None. $$ *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 Nelson. National Hurricane Center.