000 AGXX40 KNHC 290754 MIMATS Marine Weather Discussion NWS National Hurricane Center Miami FL 1233 AM EDT Mon May 29 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 thermal trough will develop late each afternoon over the Yucatan Peninsula, and shift w across the southwestern gulf waters, generally to s of 24N between 90W and 93W, during the overnight and early daylight hours, and gradually lose identity along about 94W by late each morning. Expect a ne-e-se 15-20 kt wind shift along the trough axis, except 20 to 25 kt along the n coast of the Yucatan Peninsula this evening, with guidance hinting that these brief strong conditions will develop again on Thu and Fri evenings. Expect seas to build briefly to 6 ft just w of the strong winds. A surface high will meander over the far ne gulf waters through Fri night with moderate southerly return flow over the waters w of 88W, increasing to fresh breeze each evening, except locally strong se flow forecast just offshore of Veracruz Mexico. Expect 3 to 5 ft seas throughout the period. However, guidance is suggesting the pressure gradient will tighten Thu night with a swath of strong se wind from 21N to 27N along 92W at sunrise Fri. Light and variable winds will surround the high center, with light to moderate anticyclonic flow forecast e of 88W through Fri night, except becoming a fresh breeze across the Fl Straights during the evenings. Widespread fog observed, with visibilities of 1 to 3 miles, over the nw gulf this morning, will be carried in weather grids ahead of convection currently inland but shifting e with time. ...CARIBBEAN SEA AND TROPICAL N ATLANTIC FROM 07N TO 19N BETWEEN 55W AND 64W... Atlc high pressure will support fresh e trades, with 5-8 ft seas, across the central Caribbean through Tue morning, with locally strong nocturnal trades within about 180 nm of the nw coast of Colombia, and across the Gulf of Venezuela. The pressure gradient will tighten on Tue night, with strong e winds expanding n from the Colombian coast to along 16N between about 70W and 78W on Wed, and expanding further n and further w on Thu and Fri with seas building to 11 ft near 13N75W. Strong nocturnal e to se trades forecast across the Gulf of Honduras through Fri night. Tropical waves over the e Caribbean and over the tropical waters e of the Windwards, will continue westward accompanied by a moderate to fresh ne-e-se wind shift and only a slight enhancement of convection. ...SW N ATLANTIC INCLUDING THE BAHAMAS... A ridge will extend e to w along 26N later today where it will meander through Tue, then shift n to along 28N on Tue night and Wed and along 29N on Wed night and Thu and along 30N on Fri. Moderate to fresh easterlies are expected s of 23N, except becoming a strong e breeze along the n coast of Hispaniola during the evenings. Moderate sw flow forecast n of the ridge. $$ .WARNINGS...Any changes impacting coastal NWS offices will be coordinated through AWIPS II Collaboration Chat, or by telephone: .GULF OF MEXICO... None. .CARIBBEAN SEA AND TROPICAL N ATLANTIC FROM 07N TO 19N BETWEEN 55W AND 64W... None. .SW N ATLANTIC INCLUDING THE BAHAMAS... None. $$ *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.