Marine Interpretation Message
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000
AGXX40 KNHC 171816
MIMATS

Marine Weather Discussion
NWS National Hurricane Center Miami FL
116 PM EST Wed Jan 17 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 strong cold front continues to move across the Gulf region. As
of 1200 UTC, the front extends from a 1023 mb low pressure over
South Carolina across northern Florida into the Gulf of Mexico to
near 24N90W to Veracruz, Mexico. Gale force winds are occurring
west of the front S of 26N based on latest scatterometer pass. A
recent altimeter pass indicates seas of 16-18 ft within the area
of gale force winds. The front will move south of the basin
tonight. Gale force winds are expected west of the front along the
coast of Mexico near Veracruz through early Wed morning. Fresh
to strong northerly winds are also expected elsewhere behind the
front through tonight. High pressure behind the front will slowly
shift eastward along the US Gulf coast through Friday. Fresh to
locally strong southerly flow will set- up across the western
Gulf on Fri, and persist on Saturday ahead on the next cold front
forecast to reach the Texas coast Sun night.

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

A dissipating stationary front remains across the basin extending
from eastern Cuba to near 17N80W. Abundant cloudiness with
embedded showers and tstms are noted over the NW Caribbean and a
surface trough is analyzed there extending from 21N86W to 15N82W
at 1500 UTC. According to the Galvez-Davison Index (GDI), there is
a potential for widespread shallow convection across the NW
Caribbean and parts of Nicaragua and Honduras today. Abundant
moisture will persist over this area through Thursday based on the
GFS model. Patches of low-level moisture carried by the trade
wind flow are seen across the remainder of the Caribbean Sea.
Moderate to fresh NE winds are seen in the lee of Cuba, and within
about 60 nm of the coast of Nicaragua. Fresh to strong winds are
near the coast of Colombia. The cold front currently moving across
the Gulf of Mexico will reach the NW Caribbean tonight, then
extend from central Cuba to Honduras on Thursday. Fresh to strong
winds and widespread showers are expected behind the front through
Thursday night. Strong trade winds will pulse near the coast of
Colombia coast Fri night and then expand across much of the
central Caribbean over the weekend as high pressure builds N of
area.

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

A weakening stationary front extending from 31N66W to eastern
Cuba will dissipate later today. A strong cold front will move off
Florida this afternoon, and extend from 31N69W to eastern Cuba
Thursday, then weaken SE of the Bahamas from 24N65W to the
Windward Passage on Friday. The low pressure currently located
over South Carolina will move ENE into the western Atlantic
Ocean while deepening. This will induce a band of gale force
winds north of 30N on Thursday behind the strong cold front. High
pressure will then build east over the SW N Atlantic waters over
the weekend.

$$

.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 Warning today into tonight.

.CARIBBEAN SEA AND TROPICAL N ATLANTIC FROM 07N TO 19N BETWEEN
55W AND 64W...
     None.

.SW N ATLANTIC INCLUDING THE BAHAMAS...
.AMZ113...ATLANTIC FROM 27N TO 31N BETWEEN 70W AND 77W...
     Gale Warning Thu.
.AMZ115...ATLANTIC FROM 27N TO 31N BETWEEN 65W AND 70W...
     Gale Warning Thu.

$$

*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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