000 AGXX40 KNHC 150754 MIMATS Marine Weather Discussion NWS National Hurricane Center Miami FL 354 AM EDT Thu Jun 15 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... Weak ridging from the western Atlantic to the northeast Gulf will remain in place through Sunday. Winds are 15 kt or less and seas less than 6 ft across the region and are expected to remain relatively quiet throughout the area into Sunday. A broad low pressure - a Central American gyre - approaching the area from the southeast via Central America and southeastern Mexico is anticipated to develop by Saturday. This gyre will likely be partially due to the tropical wave that is currently in the eastern Caribbean. Winds and seas along with scattered showers and thunderstorms will develop Sunday into Monday over much of the southeast and south central Gulf ahead of the gyre, spreading northward as the gyre enters the south central Gulf Monday. There is a medium chance for tropical cyclone development early next week, and interests in the eastern Gulf in particular should monitor the Tropical Weather Outlook of the National Hurricane Center at hurricane.gov for more information. ...CARIBBEAN SEA AND TROPICAL N ATLANTIC FROM 07N TO 19N BETWEEN 55W AND 64W... A tropical wave between Grand Cayman and western Panama will move into Central America tonight. Another tropical wave in the eastern Caribbean will cross the central Caribbean today and Friday, and enter the western Caribbean Saturday. Partially related to this tropical wave, the broad low pressure - a Central American gyre - will develop across Central America and the western Caribbean by Saturday or Sunday. Moderate to fresh trade winds will dominate across the eastern and central Caribbean through Saturday, then increase slightly Sunday as the broad low develops. Similarly strong southeast winds are likely by Sunday over the northwest Caribbean. Farther east, a vigorous tropical wave accompanied by surface low pressure is expected to pass 55W by Sunday and move through the Windward Islands early next week. While global model guidance is converging on the likelihood of this feature reaching the Windward Islands by early next week, the precise timing, location and strength of the low pressure remains unclear at this time. ...SW N ATLANTIC INCLUDING THE BAHAMAS... An east to west ridge along 28N will stay in place through the weekend. Winds are 15 kt or less and seas less than 6 ft north of 22N and are expected to remain relatively quiet throughout the area through Sunday, with moderate to fresh east winds south of 22N, occasionally pulsing to 20 to 25 kt north of Hispaniola at night. Southeast winds will increase from the Leeward Islands through the Bahamas by late Monday on the periphery of the developing broad low pressure over Central America moving into the Gulf of Mexico by early next week. $$ .WARNINGS...Any changes impacting coastal NWS offices will be coordinated through AWIPS II Collaboration Chat, or by telephone: .GULF OF MEXICO... None. .CARIBBEAN SEA AND TROPICAL N ATLANTIC FROM 07N TO 19N BETWEEN 55W AND 64W... None. .SW N ATLANTIC INCLUDING THE BAHAMAS... None. $$ *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.