marine weather discussion...updated NWS National Hurricane Center Miami FL 503 PM EDT Sat Oct 20 2018
Updated SW N Atlantic section
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 30n92w to a 1016 mb low at 27n96w. A trough exetnds from the low to 23n96w and to near 19n95w. The cold front will push into the northern Gulf tonight, and sweep across the eastern and central Gulf waters tonight and become stationary from S Florida to 26n93w and warm front to a new 1017 mb low at 26n97w by Mon evening. A cold front will extend from the new low to 24n96w, and stationary to Mexico near Tampico. The present 1017 mb low over the NW Gulf will dissipate late tonight over the north-central Gulf. The new low will lift north- northeastward through Mon night, then east-northeastward across the north-central Gulf through Wed night and the NE Gulf Thu, with a front to trail from it to the SW Gulf, and another front from the low eastward across N-central Florida. High pressure will build across the southeastern United States to the waters north of the low and front, and also behind the trailing front. The ensuing gradient will support fresh to strong NE to E winds and building seas over the waters north of the low and front east of 93w, and fresh to strong NW winds over the far western waters west of the trailing front.
...Caribbean Sea and tropical N Atlantic from 07n to 19n between 55w and 64w...
Fresh to strong NE winds will pulse in and near the Windward Passage and within 60 nm south of Hispaniola through Tue. Fresh to strong NE winds near the coast of Colombia will diminish to mainly fresh winds Sun afternoon, and change little through Tue night before diminishing to light to moderate winds Wed through Thu night. Elsewhere, moderate to fresh trades will continue through early Wed, then diminish to the gentle intensity through Thu night. A topical wave will move across the tropical N Atlantic through Sun night, and reach the far eastern Caribbean Mon while slowing down. It will move across the rest of the eastern Caribbean through Thu, followed by east to southeast gentle to moderate winds.
...SW N Atlantic including the Bahamas...updated
A stationary front is dissipating from near 25n65w to 26n69w. A strong cold front will move off NE Florida tonight, reach from near 31n70w to 27n75w and to near West Palm Beach Sun afternoon, from near 31n64w to 26n72w to Miami late Sun night, and from 26n65w to the NW Bahamas and the Florida Keys by Mon evening then become stationary. Fresh to strong winds and building seas are expected behind this front through late Mon as strong high pressures slides eastward off the U.S. East Coast. The high pressure and front will weaken Tue through Thu allowing for winds to diminish and seas to subside.
.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 Aguirre. National Hurricane Center.