Marine Weather for HS 101

Forecast

marine weather discussion NWS National Hurricane Center Miami FL 120 PM EDT sun Aug 20 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 few showers and thunderstorms are active across the se Gulf on the se side of an upper low centered over the eastern Gulf near 25n86w. An associated surface trough is analyzed over the Florida Peninsula. This weather will move with the upper low as it tracks WNW toward the Texas coast through mid week, while winds will increase to fresh in the se Gulf through The Straits of Florida in the wake of the surface trough through the early part of the week. Meanwhile the remnants of Harvey in the Caribbean will move across the Yucatan Peninsula Tue. The remnants may emerge into the far SW Gulf/Bay of Campeche Wed bringing increasing winds and seas along with active convection, possibly as a tropical cyclone. Another surface trough will move from E to W across the basin Tue night through the end of the week. Elsewhere, weak ridging will persist across the northern Gulf or along the northern coast, maintaining light to gentle winds and slight seas.

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

A tropical wave over the NW Caribbean through the Gulf of Honduras and across Honduras and western Nicaragua continues to move westward supporting scattered showers and thunderstorms. The tropical wave will exit the area tonight.

Farther E, the remnants of former tropical cyclone Harvey are centered over the central Caribbean between S-se of Jamaica and northern Colombia near 14n75w. The convection was quite disorganized yesterday and through much of the night, but has redeveloped during the early morning hours through the early afternoon. It is not clear if a closed circulation has redeveloped, but an aircraft is scheduled to investigate the area this afternoon to see if redevelopment is occurring. At any rate, the remnants of Harvey be accompanied by scattered thunderstorms, along with fresh to strong winds and seas of 8 to 10 ft on its northern periphery as it continues to move WNW through the northwest Caribbean through early Tue. Interests in Central America should continue to monitor http://hurricanes.Gov for the latest on this area.

Moderate to fresh easterly trade winds will follow in the wake of the remnants of Harvey across the Caribbean, and also following another tropical wave in the eastern Caribbean moving across the central Caribbean through mid week. Winds will pulse to fresh to strong in the S central Caribbean late Wed night through the end of the week as the pressure gradient tightens across that area. Yet another tropical wave will pass 55w Tue, and enter the eastern Caribbean early Wed.

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

Scattered showers and thunderstorms are active from across the gulfstream to the Florida Keys associated with a surface trough currently along the E coast of the Florida Peninsula. A strong surface trough is located to the E, just S of 27n along 66w/67w with numerous showers and scattered thunderstorms within 75 nm of the trough axis. An area of fresh to strong winds and seas of 8 to 10 ft also accompany the trough. Meanwhile, ridging extends from E to W along 30n. The ridge will lift northward as the trough continues to progress to the W, reaching the southern Bahamas and turks/caicos late tonight. Weak ridging will build across the area by mid-week with fairly tranquil marine conditions expected basin-wide.

$$

.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 lewitsky. National Hurricane Center.

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