000 AGXX40 KNHC 141852 MIMATS Marine Weather Discussion NWS National Hurricane Center Miami FL 252 PM EDT Sat Oct 14 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 surface trough extending SW from the Florida Big Bend to the Yucatan Peninsula will move W today and becoming oriented from 28N94W to 19N91W, with a 1013 mb surface low developing along the trough near 23N92W on Sun. The low will drift N and dissipate on Sun night. The next cold front is forecast to reach the TX coast late Sun, with the front then racing E to a position from the Fl Big Bend to 23N93W to the Bay of Campeche late Mon, and then stalling from Tampa Bay to 25N91W to 18N93W late Tue night. Fresh to locally strong N winds will follow the front, except increasing to minimal gale force NW flow within 90 nm of the Mexican coast from 22N to 24 beginning Mon afternoon, then continuing along the Mexican coast from 20N to 22N W of 94W through Tue evening, with seas building to a max of 13 ft. Strong post- gale NW flow will then continue through Tue night into Wed morning before diminishing. ...CARIBBEAN SEA AND TROPICAL N ATLANTIC FROM 07N TO 19N BETWEEN 55W AND 64W... A tropical wave will move W through the Gulf of Honduras today with a slight enhancement of convection. Fresh to strong NE to E trades, with seas of 6-8 ft, will pulse along the NW coast of Colombia today and tonight, then subside. A tropical wave currently S of 22N between 60W and 63W is accompanied by considerable convection within 450 nm E of the wave axis where scatterometer winds are 20 to 30 kt in the stronger cells and outflow boundaries, and a fresh to locally strong NE-E-SE wind shift. The wave is forecast to move W through the E Caribbean through tonight, and reach the Central Caribbean on Mon and the western Caribbean on Tue, with fresh trades setting up on the E side of the wave axis through the middle of next week. ...SW N ATLANTIC INCLUDING THE BAHAMAS... A surface trough extending NE from N of the Central Bahamas near 26N75W to near 31N72W will continue moving W today and Sun, reaching near 80W early Mon, all the while accompanied by a moderate NE-E-SE wind shift and ISOL TS. The northern extension of a tropical wave, currently across the tropical waters along 61W, will head WNW and pass E of the SE Bahamas early Mon, then turn N along 70W on Monday night and Tuesday. A cold front will enter the NW waters on Mon night, reach from 31N63W to the Central Bahamas on Wed. Fresh to locally strong NE winds are forecast N of 29N W of 76W on Mon night into Tue. $$ .WARNINGS...Any changes impacting coastal NWS offices will be coordinated through AWIPS II Collaboration Chat, or by telephone: .GULF OF MEXICO... .GMZ017...W CENTRAL GULF FROM 22N TO 26N W OF 94W... GALE CONDITIONS POSSIBLE Mon. .GMZ023...SW GULF S OF 22N W OF 94W... GALE CONDITIONS POSSIBLE Mon into Tue night. .CARIBBEAN SEA AND TROPICAL N ATLANTIC FROM 07N TO 19N BETWEEN 55W AND 64W... None. .SW N ATLANTIC INCLUDING THE BAHAMAS... None. $$ *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.