marine weather discussion NWS National Hurricane Center Miami FL 139 am EDT Tue Oct 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...
A cold front currently from the FL Big Bend to the Bay of Campeche will continue to slow while advancing se and gradually losing identity across the se waters Tue night through Wed. Gale force 30-40 kt NW winds, and seas to 15 ft will continue within 90 nm of the Mexican coast through this evening. Strong Post-gale NW flow will then continue through Wed evening. A fresh to locally strong E breeze is expected across the northern Gulf waters on Thu and Fri, except a fresh return flow will set up across the NW Gulf waters on Thu night and continue through Sat night with the next cold front expected on sun.
...Caribbean Sea and tropical N Atlantic from 07n to 19n between 55w and 64w...
A tropical wave currently along 78w will move W through the western Caribbean today and Wed, and through the NW Caribbean on Thu. Fresh to locally strong trades have set up E of this wave. A second tropical wave will enter the se Caribbean today accompanied by sct ts. A third wave wave will enter the tropical waters by this evening and will reinforce the existing flow resulting in strong E trades, and seas of 7-11 ft, spreading W across the Caribbean E of 73w by sunrise on Thu, and extending across the central Caribbean beginning on Fri, and then persisting through the upcoming weekend.
...SW N Atlantic including the Bahamas...
A broad surface trough is between 68w and 73w with a weakening 1014 mb surface low currently racing N along the trough near 30n79w. Strong to near gale force southerly flow, and sct tstms currently N of 23n within 300 nm E of the trough will shift N of 31n this evening.
A cold front currently along the se Georgia coast will race E to a position from 31n66w to FL straits early Wed, then merge with the previously described trough becoming quasi-stationary along a position from 31n67w to the NW Bahamas to the FL straits Wed night. The merged boundary will begin to move E again on Thu, then stall again from 31n58w to 27n70w to NW Cuba late Fri night with the frontal segment W of 65w washing out over the upcoming weekend as fresh se return sets up across the waters N of 23n W of 72w. Strong Post-frontal NE flow with seas to 12 ft expected W of a line from 31n75w to Post Canaveral FL today, then diminishing tonight into Wed.
.Warnings...Any changes impacting coastal NWS offices will be coordinated through AWIPS ii collaboration chat, or by telephone:
.Gulf of Mexico... .gmz023...SW Gulf S of 22n W of 94w... Gale Warning early today into tonight.
.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 Nelson. National Hurricane Center.