000 AGXX40 KNHC 071944 MIMATS Marine Weather Discussion NWS National Hurricane Center Miami FL 344 PM EDT Mon May 7 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 near Naples Florida southwestward to 23N86W and to 23N91W will exit the southeast gulf tonight. Another weak cold front will move across the northeast Gulf tonight, then dissipate Tue morning. High pressure will build over the area behind the front, then shift eastward to the NE Gulf Thu night into Fri. Gentle to moderate north to northeast winds will gradually shift to the east to southeast by Thu night. During Fri, high pressure ridging will extend from the western Atlantic to high center over the NE Gulf. The ridge and high center will shift slightly north by Fri night. This pattern will maintain little change to the gentle to moderate east to southeast winds over the basin. A weak thermal trough will move over the eastern Bay of Campeche from the Yucatan during the morning then dissipate during the afternoon each day beginning Wed. ...CARIBBEAN SEA AND TROPICAL N ATLANTIC FROM 07N TO 19N BETWEEN 55W AND 64W... A surface trough extending from central Cuba southward along 80W to near 15N will drift westward through Wed night and dissipate Thu. A broad upper-level trough over the central Caribbean north of 12N will shift eastward to over the eastern Caribbean on Tue, and weaken before it moves into the tropical Atlc Tue night. Scattered showers and isolated thunderstorms over the north- central Caribbean will continue through Tue night. ...SW N ATLANTIC INCLUDING THE BAHAMAS... A weak cold front from 31N77W to West Palm Beach will slowly move southeastward and reach from near 31N76W to western Cuba by this evening, then from near 31N75W to the central Bahamas to west-central Cuba early Tue. This front will be reinforced by another weak cold front that will move off the SE United States coast tonight and merge with the first front from near 31N73W to 27N75W to central Cuba Wed and become stationary. The merged front will gradually weaken through Thu night and dissipate Fri as a ridge then becomes established east to west just north of the basin. Fresh to strong southerly winds N of 27N between 70W and 74W will diminish to fresh winds Tue night and to gentle to moderate winds Wed. The merged front will become stationary over the northern Bahamas and weaken Wed through Thu night, then dissipate Fri. The pressure gradient between the ridge and relatively lower pressure over the far southern portion of the area will induce east to southeast winds to strong speeds between the SE Bahamas and the northern coast of Hispaniola through Sat beginning in the afternoons through the overnight hours, before diminishing to fresh speeds in the mornings. $$ .WARNINGS...Any changes impacting coastal NWS offices will be coordinated through AWIPS II Collaboration Chat, or by telephone: .GULF OF MEXICO... None. .CARIBBEAN SEA AND TROPICAL N ATLANTIC FROM 07N TO 19N BETWEEN 55W AND 64W... None. .SW N ATLANTIC INCLUDING THE BAHAMAS... None. $$ *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.