000 AGXX40 KNHC 131538 MIMATS Marine Weather Discussion NWS National Hurricane Center Miami FL 1138 AM EDT Wed Jun 13 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... Weak high pressure across the NE Gulf extends WNW to central Texas and is producing moderate to fresh SE winds across the west half of the basin. The pressure gradient will tighten today and tonight as a tropical wave moves across the Yucatan Peninsula and into the SW Gulf, and then slowly WNW across the western Gulf Thu and Fri. Associated moisture and weather will shift NW from 90W into the NE Mexico and Texas coastal waters during this time. The typical thermal surface trough will develop along the Yucatan Peninsula late each afternoon, and drift westward across the southwest Gulf waters during the overnight hours, accompanied by a strong east to southeast wind shift with the trough dissipating along 96W during the late mornings. ...CARIBBEAN SEA AND TROPICAL N ATLANTIC FROM 07N TO 19N BETWEEN 55W AND 64W... A tropical wave across the central Caribbean along about 72W will move through the western Caribbean on Thu through Fri night. Drier and stable SAL generally follows this wave across the eastern Carib and into the tropical Atlc. A second tropical wave will move westward through the Tropical Atlantic waters east of windwards tonight through Thu, and pass through the east Caribbean Thu night and Fri. Strong trades currently across the south-central and southwest Caribbean will spread north across the central Caribbean today through Thu, while GFS shows nocturnal wind max along coast of Colombia reaching near 30 kt tonight and Thu night. Fresh to locally strong southeast pulses will continue across the northwest Caribbean. Locally strong trades will continue across the Tropical Atlantic waters east of the Windwards today. ...SW N ATLANTIC INCLUDING THE BAHAMAS... A broad ridge continues from the central Atlantic westward to N Florida and will meander between 27N and 29N through Thu, then shift south along 25N on Fri, along 24N on Sat and along 23N on Sun. This will allow a weak cold front to move east through the waters north of 26N over the weekend. Fresh to locally strong easterly winds are forecast along the northern coast of Hispaniola during the late afternoons and evenings through Thu, with moderate easterly flow forecast elsewhere south 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 Stripling. National Hurricane Center.