Marine Interpretation Message
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000
AGXX40 KNHC 221805
MIMATS

Marine Weather Discussion
NWS National Hurricane Center Miami FL
205 PM EDT Sun Apr 22 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 cold front has reached the NW Gulf and extends from near the
Texas/Louisiana border to Brownsville, Texas. This front is
preceded by a pre-frontal squall line affecting mainly the
waters N of 28N E of the front to about 87W. S-SW winds in the
20-25 kt range are noted ahead of the front per buoys
observations. A warm front is over the NE Gulf and extends from
SE Louisiana to near Ft. Myers, FL. Fresh to locally strong SE
winds are observed N of the warm front, forecast to lift N and
move inland later today. The cold front is expected to reach
from the Florida Panhandle to NE Mexico by Mon morning, from near
Tampa Bay to Tampico, Mexico by Tue morning, and reach the
Straits of Florida and the SE Gulf by Wed morning while moving
slowly across the SW Gulf. Moderate to fresh northerly winds will
follow the front today, with building seas of 4-5 ft. Gentle to
moderate winds are then expected in the wake of the front tonight
and Mon.

...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 through Tue, then mainly moderate to fresh
trade winds will prevail the remainder of the forecast period.
Fresh to locally strong winds are also expected along the
southern coast of Hispaniola tonight through Mon morning. Seas
are forecast to build to 8-11 ft with the strongest winds near
the coast of Colombia. The cold front currently moving across the
Gulf of Mexico is forecast to reach the Yucatan Basin on Tue
night, and wash out across the NW Caribbean by Wed.

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

A stationary front extending westward from 27N65W to south-
central Florida will lift northward today, with near gale force
southeast flow developing across the forecast waters north of the
Bahamas on Mon and Mon night in association with a surface low
that will move eastward across the southeastern United States.
The surface low will track northeastward along the Georgia and
South Carolina coasts on Tue, and drag a couple of weak cold
fronts across the northwest waters during the middle of next
week. Currently, a band of showers with embedded tstms is
associated with the front, particularly W of 65W. Winds and seas
could be higher near tstms. The pressure gradient between high
pressure N of the area and the front supports a belt of fresh to
locally strong easterly winds N of the front to about 28N-29N
with seas near 8 ft based on altimeter data. Winds and seas will
further increase N of the front as it lifts N tonight and Mon.

An area of fresh to locally strong easterly winds will persist S
of 22N between 70W and 74W, including approaches to the Windward
Passage from late in the afternoon through the early morning
hours through Wed. Some ship observations indicated winds of up
to 30 kt this morning. Seas are forecast to build to 5-7 ft with
these winds.

$$

.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 GR. National Hurricane Center.


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