000 AGXX40 KNHC 230754 MIMATS Marine Weather Discussion NWS National Hurricane Center Miami FL 254 AM EST Mon Dec 23 2019 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... Low pressure that yesterday was over the NE the Gulf has moved inland the Florida panhandle, and as 06Z it is analyzed just west of Valdosta, Georgia with a pressure of 1010 mb. The trailing cold front extends from the low to inland north and central Florida to near Fort Myers and to northwest Cuba. Fresh to strong northwest winds in the wake of the front are over the Gulf E of of about 93W. These winds will continue through late tonight as a trough that extends west- southwest from the low to NE Gulf pivots southwestward across the NE Gulf to support these winds. High pressure ridging that builds in across the area on Tue will be confined to mainly the northern Gulf waters Wed through Fri night as a surface trough moves westward over the central Gulf. Light to gentle winds can be expected over the area from late Tue through much of Thu. Winds become east at fresh speeds over the eastern Gulf on Thu and shift to east to southeast in direction on Fri. Over the far western Gulf, winds become southeast to south at moderate to fresh speeds on Fri in response to low pressure that forms west of the area. ...CARIBBEAN SEA AND TROPICAL N ATLANTIC FROM 07N TO 19N BETWEEN 55W AND 64W... A cold front, that over the eastern Gulf of Mexico last night, has pushed into the northwest Caribbean early this morning. Fresh northwest to north winds are following in behind the front, with wave heights up to around 7 ft. The front will reach from central Cuba to the Gulf of Honduras later this morning, from central Cuba to the northeast side of Honduras by early this evening, from eastern Cuba to near the Nicaragua and Costa Rica border early on Tue then become stationary and weaken from the Windward Passage to Providencia Island through Wed. The fresh northwest to north winds behind the front will briefly increase to mainly strong winds this afternoon from 16N to 18N west of 85W. These winds will surge southward to within about 90-120 nm of the coast of Nicaragua on Tue and through late morning on Wed before diminishing to mainly fresh speeds. Wave heights are forecast to maximum of around 9 ft on Wed. The front is expected to dissipate by around late on Wed night. Atlantic high pressure will weaken and shift eastward Wed through Fri allowing for trades throughout to be in the gentle to moderate range, except for a few small areas of trades of fresh speeds in the central Atlantic. ...SW N ATLANTIC INCLUDING THE BAHAMAS... Slowly deepening low pressure currently over southern Georgia will track to the Georgia coast later this morning, with a trailing cold front pushing off the east coast of Florida. A tight pressure gradient between this low and central Atlantic high pressure has resulted in southeast winds increasing to gale force off the NE Florida coast and east to near 77W north of 29N. The front will continue eastward and extend from the 1005 mb low pressure center near 31N79W to just offshore southeastern Florida and to western Cuba early this afternoon. This low center will be part of complex baroclinic frontal system consisting of two lows, one other that hasn't develop yet, through Tue. For this forecast will reference the main low, that will have an associated cold front with it. The main low will track in a general east to southeast direction through the rest of the week. The aforementioned cold front will reach from near 31N76W to 26N76W and to central Cuba tonight, from the low center of 1004 mb near 30N70W to eastern Cuba early Tue night, from the low center of 1005 mb near 28N67W early on Wed to the Dominican Republic, then reach the far southeast waters by late Wed afternoon as it weakens and as the low pressure reaches near 27N66W with a pressure of about 1006 mb. The current gale force winds north of 29N will lift northeast of AMZ zone 113 tonight, however a tightening pressure gradient over the northwest part of the area between high pressure building off the southeastern U.S. and the complex area of low pressure will induce northeast gale force winds over the far northwest forecast waters beginning on Tue evening. These winds are forecast to diminish to near gale force by late Tue night. Wave heights of up to around 14 ft with these gale force winds are forecast to subside to 10 ft in north to northeast swell on Wed and to less than 8 ft by early on Thu. By early Thu afternoon, both the low and front are expected to be east of 65W as high pressure ridging builds eastward across the northern forecast waters. A tightening pressure gradient between the high pressure and the low and trough will support fresh, to at times, strong northeast to east winds across the central section of the area from late on Thu through Fri night. Otherwise, wave heights throughout will subside just over about the entire forecast area by late Fri. Wave heights to 8 ft are possible over the far eastern waters late Fri to the from 22N to 25N. $$ .WARNINGS...Any changes impacting coastal NWS offices will be coordinated through AWIPS II Collaboration Chat, or by telephone: .GULF OF MEXICO... None. .CARIBBEAN SEA AND TROPICAL N ATLANTIC FROM 07N TO 19N BETWEEN 55W AND 64W... None. .SW N ATLANTIC INCLUDING THE BAHAMAS... .AMZ111...ATLANTIC FROM 27N TO 31N W OF 77W... Gale Warning today N of 29N. .AMZ113...ATLANTIC FROM 27N TO 31N BETWEEN 70W AND 77W... Gale Warning N of 29N today and tonight. $$ *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.