Marine Weather for HS 101


marine weather discussion NWS National Hurricane Center Miami FL 221 PM EDT sun may 20 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 ridge will remain over the northern Gulf Coast through Thu night. A surface trough will drift westward from the Florida Straits to the central Gulf by Tue. A trough will develop by evening each day over the Yucatan Peninsula, then move W over the SW waters and dissipate by mid morning. An area of low pressure forecast to develop over the NW Caribbean Sea and move N within a trough extending N over the eastern Gulf could cause winds and seas to gradually increase over the se Gulf waters and Straits of Florida late Thu and Fri. The latest forecast grid update leans toward the GFS and away from the ECMWF. The GFS has trended weaker with this system during this time frame and keeps the strongest winds associated with this system to the E of the Gulf over the western Atlantic.

...Caribbean Sea and tropical N Atlantic from 07n to 19n between 55w and 64w...

Atlantic Ocean high pressure will maintain fresh to locally strong trades over the central Caribbean through most of the forecast period. Strong winds and seas to 9 ft will affect the NW coast of Colombia. Broad low pressure will develop over the SW Caribbean Mon, then move NW over Nicaragua and Honduras to the Gulf of Honduras by Thu. This could bring increased winds and seas to the western Caribbean by mid week. Winds over the western Caribbean will weaken on Fri and Sat as the area of low pressure moves farther north.

...SW N Atlantic including the Bahamas...

An east to West Ridge will reside near 30n through mid week. The ridge will support fresh to locally strong E to se winds mainly S of 26n, including the old Bahama channel, and the approaches to the Windward Passage through Wed night. A broad area of low pressure moving northward across the eastern Gulf will cause strong se winds to develop over the waters W of 75w on Fri and Sat.


.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 McElroy. National Hurricane Center.

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