000 AGXX40 KNHC 080707 MIMATS Marine Weather Discussion NWS National Hurricane Center Miami FL 307 AM 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... A ridge of high pressure crosses the northern waters from near Tampa to the upper Texas coast. Latest satellite derived winds and seas along with ship, buoy, and CMAN data depict light to gentle winds prevailing over much of the Gulf waters, except for the southwest Gulf where gentle to moderate winds prevail. A tropical wave passing over the SW Gulf is interacting with an upper-level low centered over central Mexico to trigger deep convection and moderate to fresh winds over the bay of Campeche. Seas range between 1-2 ft over the northeast Gulf, 3-5 ft over the southwest Gulf, and 2-3 ft elsewhere. The ridge will prevail over the northern waters through Tuesday. A thermal trough will develop each evening over the Yucatan Peninsula before pushing offshore into the SW Gulf each night and dissipating 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 early next week. ...CARIBBEAN SEA AND TROPICAL N ATLANTIC FROM 07N TO 19N BETWEEN 55W AND 64W... A ridge of high pressure prevails north of the area. Latest satellite derived winds and seas along with ship, buoy, and CMAN data depict fresh to strong winds over the central Caribbean, gentle to moderate winds over the eastern and western Caribbean, as well as the tropical north Atlantic forecast zones. Seas are in the 7-10 ft range over the central Caribbean, 3-5 ft over the eastern and western Caribbean, and 4-6 ft over the tropical north Atlantic forecast zones. The remnants of Tropical Depression Four will pass northeast of the Lesser Antilles this 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... A ridge of high pressure remains anchored over the northern waters. Latest satellite derived winds and seas along with ship, buoy, and CMAN data depict light to gentle winds over the waters north of 25N and gentle to moderate winds south of 25N. 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 northern waters through Monday before shifting northward Tuesday. The remnants of Tropical Depression Four will pass northeast of the Lesser Antilles on Sunday. The remnants will then move into the eastern forecast zones early next week, and 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 McElroy. National Hurricane Center.