526 AGXX40 KNHC 231813 MIMATS Marine Weather Discussion NWS National Hurricane Center Miami FL 213 PM EDT Mon Jul 23 2018 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 cold front extends from the Florida Panhandle to SE Louisiana. A large area of showers and tstms is ahead of the front affecting mainly the waters N of 25N E of 90W. Winds and seas could be higher near tstms. W to NW winds in the 20 to 25 kt range are noted N of 27N between 87W and 90W, with seas of 5-8 ft over the NE Gulf, higher near tstms. Seas of 2-4 ft are roughly SW of a line from 23N84W to 28N93W. The front will continue to move SE across the Gulf waters through Thu, reaching a position from the Florida Panhandle to the upper Texas coast Tue morning, and from the western Florida Panhandle to near Brownsville by Wed morning. Then, the front will become stationary and weaken to a trough by Thu. Elsewhere, a surface trough will move off the Yucatan Peninsula into the Bay of Campeche each evening, accompanied by fresh nocturnal winds. ...CARIBBEAN SEA AND TROPICAL N ATLANTIC FROM 07N TO 19N BETWEEN 55W AND 64W... Latest scatterometer data provided observations of fresh to strong winds over the south-central Caribbean, with gentle to moderate winds prevailing over the remainder of the Caribbean S of 18N as well as the tropical N Atlc forecast waters. Light to gentle anticyclonic flow is noted over the NW Caribbean, with a weak 1015 mb high pressure located near 20N85W. Seas are in the 8-9 ft range over the south-central Caribbean with the strongest winds, 5-6 ft over the north-central Caribbean, 4-5 ft over the eastern Caribbean, and 2-3 ft over the NW Caribbean. Over the tropical N Atlc forecast zones, seas are in the 5-7 ft range. High pressure north of the area will support fresh to strong winds in the south-central Caribbean, with gentle to moderate winds elsewhere the next several days. ...SW N ATLANTIC INCLUDING THE BAHAMAS... The Atlantic high pressure combined with a low pressure system over the SE CONUS will produce moderate to fresh southerly winds across the waters N of 27N W of 70W through Wed, with seas building to near 7 ft. A recent scatterometer pass confirms the presence of these wind speeds. Moderate to fresh winds are also expected S of 22N W of 70W, including approaches to the Windward Passage most of the forecast period, with building seas to 5 or 6 ft. A mid to upper level trough, with axis across the eastern Gulf of Mexico, will continue to promote scattered showers and thunderstorms across the waters E of Florida to about 75W through at least Wed. High pressure will dominate the area much of the forecast period, with a surface trough reaching the E part of the region late Wed into Thu. $$ .WARNINGS...Any changes impacting coastal NWS offices will be coordinated through AWIPS II Collaboration Chat, or by telephone: .GULF OF MEXICO... None. .CARIBBEAN SEA AND TROPICAL N ATLANTIC FROM 07N TO 19N BETWEEN 55W AND 64W... None. .SW N ATLANTIC INCLUDING THE BAHAMAS... None. $$ *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 GR. National Hurricane Center.