Marine Interpretation Message
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000
AGXX40 KNHC 250627
MIMATS

Marine Weather Discussion
NWS National Hurricane Center Miami FL
127 AM EST Sun Feb 25 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...

Fair weather prevails across the basin due to a very dry airmass
at low and middle levels of the atmosphere, as indicated by
GOES-16 water vapor imagery. CIRA microwave imagery at the lower
levels show patches of shallow moisture advecting to the northwest
Gulf, which is supporting dense fog north of 27N and west of 91W.
This fog will dissipate later this morning. A broad area of high
pressure over the western Atlantic extends across the basin
supporting moderate to fresh southeast flow across the basin.

A weak cold front will move into the NW Gulf tonight, then stall
and weaken from the FL panhandle to NE Mexico through Mon night.
High pressure will build across the region Tue. Another,
stronger cold front will move into the NW Gulf Wed night. Gale
conditions are possible over the SW Gulf Thu afternoon and Thu
night behind this front. Fresh to strong NW winds are expected
elsewhere behind the front. The front will reach the SE Gulf on
Fri.

...CARIBBEAN SEA AND TROPICAL N ATLANTIC FROM 07N TO 19N BETWEEN
55W AND 64W...

Water vapor imagery from GOES-16 shows deep layer dry air across
the Caribbean, which is supporting fair weather across most of
the basin. Scattered showers are noted across the Greater
Antilles generated by shallow moisture transported by moderate to
fresh trades.

High pres N of the area will support fresh to strong trade winds
east of 80W through tonight, with the strongest winds over the
Windward Passage and along the coast of N Colombia. Winds and
seas will gradually diminish for the most part Mon, except strong
winds will pulse near the Colombia coast at night through Thu
night.

...SW N ATLANTIC INCLUDING THE BAHAMAS...

A broad surface ridge prevails across the west and central
Atlantic anchored by a 1026 mb high near 31N69W and a 1025 mb
high near 31N57W. Fresh to locally strong east winds are noted in
the approaches of the Windward Passage and the eastern Great
Bahama Bank. These strong winds will diminish below 20 kt by
this afternoon. Seas to 9 ft east of the southern Bahamas will
decrease below 8 ft by this afternoon as well.

High pressure centered near 31N70W will weaken and shift
southward tonight through Mon night. A cold front will move off
the SE coast of the U.S. on Mon, then become stationary along
about 28N through Tue, with high pressure building N of the
front. Large swell will reach the zones E of 70W midweek. A
stronger cold front will affect waters mainly N of 28N Thu
night. This front will approach the SE U.S. coast early Thu with
strong SW winds developing E of the front. The front will move
quickly SE over the forecast waters, reaching from 31N72W to the
Florida Straits Friday morning. Strong NW winds are expected N of
28N behind the front. Seas will build to 8 to 12 ft N of 28N
under the stronger winds both E and W of the front.

$$

.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 CONDITIONS POSSIBLE Thu into Thu night.

.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 Latto. National Hurricane Center.


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