000 AGXX40 KNHC 161728 MIMATS Marine Weather Discussion NWS National Hurricane Center Miami FL 128 PM EDT Sun Jul 16 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 weak surface trough prevails across the northern Gulf providing focus for widely scattered showers and tstms this afternoon generally N of 26N. Latest satellite derived winds and seas along with ship, buoy, and CMAN data depict light to gentle mostly southerly winds and seas in the 1-2 ft range prevailing across the forecast waters. The trough will weaken through tonight, with high pressure building in across the forecast waters. A trough will develop across the Yucatan peninsula each late afternoon into the early evening hours. The trough will move W-NW during the overnight hours, and dissipate across the SW Gulf by late each morning. ...CARIBBEAN SEA AND TROPICAL N ATLANTIC FROM 07N TO 19N BETWEEN 55W AND 64W... Latest satellite derived winds and seas along with ship, buoy, and CMAN data depict moderate to fresh winds across the central Caribbean, moderate winds across the eastern Caribbean, light to gentle winds across the western Caribbean, and moderate to fresh winds across the tropical north Atlantic forecast zones. Seas are in the 4-6 ft range across the central Caribbean, 4-5 ft across the eastern Caribbean, 1-3 ft across the western Caribbean, and 5-7 ft across the tropical north Atlantic forecast zones. High pressure will build across the Atlantic waters north of the area early in the week and maintain itself through much of the week ahead. This will tighten the pressure gradient and increase winds and seas across the forecast area. A tropical wave along 49W will begin impacting the eastern-most zones by Monday night and move across the Lesser Antilles on Tuesday night increasing winds to fresh to occasional strong levels through early Wednesday morning. Seas east of the islands will reach 9 to 11 ft as the wave passes through the region. As the wave begins to track across the eastern Caribbean waters on Wednesday...winds will remain fresh to strong in the vicinity of the wave axis with seas building west of the Lesser Antilles as a result into a range of 9 to 11 ft. The wave will begin impacting the central Caribbean late Wednesday night into Thursday. ..SW N ATLANTIC INCLUDING THE BAHAMAS... Latest satellite derived winds and seas along with ship, buoy, and CMAN data depict light to gentle winds across the northern waters with gentle to moderate winds across the southern waters. Seas are in the 3-4 ft range across the northern waters, 4-5 ft across the southern waters outside the Bahamas, and 1-2 ft west of the Bahamas. High pressure will build across the forecast waters by early this week and prevail thereafter. $$ .WARNINGS...Any changes impacting coastal NWS offices will be coordinated through AWIPS II Collaboration Chat, or by telephone: .GULF OF MEXICO... None. .CARIBBEAN SEA AND TROPICAL N ATLANTIC FROM 07N TO 19N BETWEEN 55W AND 64W... None. .SW N ATLANTIC INCLUDING THE BAHAMAS... None. $$ *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 HUFFMAN. National Hurricane Center.