000 AGXX40 KNHC 081714 MIMATS Marine Weather Discussion NWS National Hurricane Center Miami FL 114 PM EDT Sat Jul 8 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... High pressure prevails over the northern Gulf waters while a tropical wave is moving through the far southwestern Caribbean enhancing convection. Light and variable winds prevail over the northern waters while gentle to moderate winds prevail over the southern waters. Seas are in the 2-4 ft range over the southwestern Gulf and 1-2 ft over the remaining Gulf waters. High pressure will prevail over the northern waters through Wednesday. A thermal trough will develop each evening over the Yucatan Peninsula before pushing offshore into the SW Gulf each night and dissipate over this area each morning. A surge of moderate to fresh N-NE winds will accompany this trough, with seas briefly building to 5 ft in association with these winds. Otherwise, gentle to moderate E to SE winds and seas of 4 ft or less will continue over most of the Gulf through the forecast period. ...CARIBBEAN SEA AND TROPICAL N ATLANTIC FROM 07N TO 19N BETWEEN 55W AND 64W... A ridge of high pressure prevails north of the area. A tropical wave, the remnants of Tropical Depression Four is moving through the tropical north Atlantic waters. Latest satellite derived winds and seas along with ship, buoy, and CMAN data depict fresh to strong winds over the south central Caribbean, moderate to fresh winds over the south central Caribbean, gentle to moderate winds over the eastern and western Caribbean. Gentle to moderate winds prevail over much of the tropical north Atlantic forecast zones, except fresh to locally strong over the northern waters in association with the remnant wave of Tropical Depression Four. Seas are in the 5-8 ft range over the central Caribbean, 3-5 ft over the eastern and western Caribbean, and 4-6 ft over much of the tropical north Atlantic forecast zones, except the northern waters where seas are in the 8-10 ft range associated with the fresh to strong winds associated to the remnant wave of Tropical Depression Four. The remnants of Tropical Depression Four will pass northeast of the Lesser Antilles the remainder of the weekend, then north of Puerto Rico early next week. This will weaken the ridge to the north and reduce the pressure gradient over the Caribbean waters, bringing a decrease in winds and seas by the middle of next week. ..SW N ATLANTIC INCLUDING THE BAHAMAS... High pressure prevails over the forecast waters. Latest satellite derived winds and seas along with ship, buoy, and CMAN data depict light to gentle winds over the waters north of 24N and gentle to moderate winds south of 24N. Seas are in the 3-4 ft range over the northern waters, 4-6 ft over the southern waters outside the Bahamas, and 1-3 ft west of the Bahamas. The ridge will prevail over the forecast waters will shift northward this weekend as the remnants of Tropical Depression Four move into the eastern forecast zones, then across the forecast area through midweek. $$ .WARNINGS...Any changes impacting coastal NWS offices will be coordinated through AWIPS II Collaboration Chat, or by telephone: .GULF OF MEXICO... None. .CARIBBEAN SEA AND TROPICAL N ATLANTIC FROM 07N TO 19N BETWEEN 55W AND 64W... None. .SW N ATLANTIC INCLUDING THE BAHAMAS... None. $$ *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 AL. National Hurricane Center.