000 AGXX40 KNHC 061935 MIMATS Marine Weather Discussion NWS National Hurricane Center Miami FL 335 PM EDT Sun May 6 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... A weak cold front extending from northeast Florida southwestward to 29N83W to 25N90W and westward to just inland Mexico at 24N98W will move of the gulf tonight. High pressure building over the Gulf in the wake of the front will support gentle to moderate north to northeast winds through Tue night. Winds over the basin will become northeast to east Wed through early Thu, except for southeast to south winds over the far western gulf in return flow as high pressure in the wake of the front shifts to the northeast gulf. On Fri, the high will have moved into the western Atlantic, with a ridge extending westward across the northern gulf waters. This will allow for mainly moderate east to southeast winds exist over the basin, with pretty low seas. A weak thermal trough will move off the Yucatan Peninsula and over the eastern Bay of Campeche each morning and dissipate in the early afternoons beginning Wed. ...CARIBBEAN SEA AND TROPICAL N ATLANTIC FROM 07N TO 19N BETWEEN 55W AND 64W... The southern portion of a surface trough that extends from western Cuba south to 19N83W will linger through Wed night while gradually dissipating. The gradient between it and strong central Atlantic high pressure that ridges southwestward across the eastern and central Caribbean will maintain fresh to strong east to southeast winds over the Caribbean E of 75W through late tonight, then diminish to mainly fresh winds through the rest of the period. A large upper-level low centered over eastern Cuba will gradually shift east-southeastward through tonight as it weakens to a trough. This trough will move eastward across the central and eastern Caribbean through Tue night. Scattered showers and isolated thunderstorms can be expected ahead of the trough. ...SW N ATLANTIC INCLUDING THE BAHAMAS... The surface trough that moved across the basin the past few days has moved to the eastern Gulf of Mexico as central Atlantic high pressure continues to build westward across most of the area. An area of scattered showers and thunderstorms is observed from 22N to 25N between 74W and 76W, and is lifting to the north. A weak cold front over the far northwest waters will slowly move southeastward reaching from near 31N78W to the Straits of Florida early Mon, from near 31N77W to western Cuba by early Mon afternoon, then from near 31N74W to the central Bahamas and stationary to west- central Cuba early Tue. The cold front portion will then become stationary later on Tue. Fresh to strong southerly winds will precede the front north of about 27N through late Mon afternoon. The front will weaken through Thu night and dissipate Fri, with its remnants lifting northwest to near 29N on Fri as a high pressure center moves off the southeastern United States coast to near 31N75W Thu night and to near 31N70W Fri with a ridge extending to near 30N80W. Winds will pulse to strong between the Bahamas and the north coast of Hispaniola during the late afternoon through the nighttime hours evening hours Tue through Sat. $$ .WARNINGS...Any changes impacting coastal NWS offices will be coordinated through AWIPS II Collaboration Chat, or by telephone: .GULF OF MEXICO... None. .CARIBBEAN SEA AND TROPICAL N ATLANTIC FROM 07N TO 19N BETWEEN 55W AND 64W... None. .SW N ATLANTIC INCLUDING THE BAHAMAS... None. $$ *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 Aguirre. National Hurricane Center.