000 AGXX40 KNHC 170611 MIMATS Marine Weather Discussion NWS National Hurricane Center Miami FL 211 AM EDT Mon Apr 17 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 will extend from the western Atlantic to a weak high pressure center over the northeastern gulf with a ridge axis westward across the remainder of the Gulf coast through the upcoming work week. Low pressure crossing Texas late this week will finally start to break down the ridge axis across the western Gulf coast. This high will support light to gentle winds across the northeast Gulf and mainly moderate winds elsewhere. The only two exceptions will be prevailing fresh winds over the Florida Straits and over the next three nights fresh to strong winds associated with a thermal trough moving westward off the Yucatan Peninsula will affect waters north and west of the western Yucatan. Precipitation guidance shows mainly scattered showers across the eastern Gulf through tonight, except perhaps for some convective outflow boundaries reaching offshore waters across the Texas and Mexico coasts west of 95W. By mid week an upper tough is forecast to move across the southwestern Gulf supporting showers and thunderstorms Tuesday night through Friday across that portion of the basin. ...CARIBBEAN SEA AND TROPICAL N ATLANTIC FROM 07N TO 19N BETWEEN 55W AND 64W... High pressure north of the region will support fresh to locally strong winds across the Windward Passage, Lee of Cuba, and the central Caribbean through this morning. The high will remain north of the area through mid week, then get re-enforced by a new high later this week. However, the high will weaken somewhat today resulting in a relaxing of the winds across the Caribbean to mainly moderate, except for occasionally strong winds through the Windward Passage and fresh winds along the coasts of Colombia and Venezuela. Large northerly swell will continue to reach through the Atlantic Passages of the eastern caribbean and across the tropical Atlantic zones through Wednesday. The swell is forecast to decrease below 8 ft across these areas Wednesday night. ...SW N ATLANTIC INCLUDING THE BAHAMAS... High pressure will persist across the northern zones through mid week, then be re-enforced by another high building southward over the Atlantic later this week. This pattern will support fresh to strong east to northeast winds mainly south of 24N and west of 60W through Tuesday night. Large residual swell from a mid Atlantic storm system and wind waves across the southern zones will support 8 to 10 ft seas across our southeast zones east of the Bahamas through Wednesday morning. As a ridge axis extends southeast across the central Atlantic mid week, fresh to occasionally strong winds will become confined to mainly the approach to the Windward Passage. A back door cold front is forecast to clip the northeastern zones Wednesday through Thursday with a freshening of northeast winds and seas building to 6 to 8 ft. Elsewhere mainly gentle to moderate winds and seas of 4 to 6 ft will prevail under fair weather conditions throughout the forecast period. $$ .WARNINGS...Any changes impacting coastal NWS offices will be coordinated through AWIPS II Collaboration Chat, or by telephone: .GULF OF MEXICO... None. .CARIBBEAN SEA AND TROPICAL N ATLANTIC FROM 07N TO 19N BETWEEN 55W AND 64W... None. .SW N ATLANTIC INCLUDING THE BAHAMAS... None. $$ *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 Latto. National Hurricane Center.