Marine Weather for HS 101


marine weather discussion...updated NWS National Hurricane Center Miami FL 555 am EDT Tue Apr 24 2018

Updated convection under SW Atlantic including the Bahamas 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...

Weather and wind conditions have quited down over the region as a weak cold front slowly advances across the eastern, south- central and SW Gulf. As of 06z, the cold front extended from from NE Florida to Sarasota, Florida and to 23n89w to Veracruz, Mexico. A weak high center of 1018 mb is analyzed over the western Gulf at 26n95w supports a fairly lax gradient west of the front. Northwesterly flow behind the front is of the gentle to moderate intensity, with seas of 2-4 ft. The northwesterly flow is present west of the front to 94w. W of 94w, the flow is gentle to moderate in anticyclonic fashion around the high center. The cold front will reach from near Naples to the Eastern Bay of Campeche this evening, and from The Straits of Florida to the southeast Gulf by Wed morning while it will remain nearly stationary over the Eastern Bay of Campeche. The front is forecast to move southeast of the area on Wed. Weak high pres will once again build across the area behind the front. Another weak cold front is expected to move to just offshore the Texas coast Wed night and over the NW Gulf Thu followed by gentle to moderate northerly flow. This cold front is expected to reach the eastern Gulf Fri and Fri nigh, and move east of the area Sat.

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

Atlantic high pressure will maintain fresh to strong trades near the coast of Colombia and the northwest coast of Venezuela through early this afternoon. These winds will then pulse back up to fresh to strong intensity at night and into the afternoons beginning tonight. They are expected to continue through the period, but over a smaller coverage area. A weakening cold front will reach NW Cuba and the Yucatan Peninsula on Wed.

Abundant moisture to the east of a rather sharp mid/upper trough is leading to scattered showers and isolated thunderstorms over much of the eastern Caribbean. Expect this pattern to hold through part of Wed.

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

A stationary front enters the area at 27n65w, and continues to near 25n74w. Latest satellite imagery shows numerous showers and thunderstorms, with strong gusty winds over the NW Bahamas and northeastward from there where a very well pronounced diffluent flow aloft exists. A very tight pressure gradient between broad low pressure over the southeastern United States and strong high pressure over the western Atlantic is producing strong to near gale force east to southeast winds over the northern waters west of 70w. Southeast to south gale force winds are currently observed just north of the forecast waters west of 75w. The strong to near gale force wind conditions will gradually diminish through Wed while shifting northeast of the area. The broad low will track northeastward toward the mid-Atlantic coast through Wed night. It will push a weak cold front across the northwest portion of the area Tue and Tue night, then across the north- central waters Wed through Thu before stalling there Thu night. Another weak cold front will move over the far northwest portion Fri and Sat, and over the north-central waters Sat night. Both of these fronts will be followed by moderate west to northwest flow and relatively low seas.


.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.

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