Marine Interpretation Message
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000
AGXX40 KNHC 240955 AAA
MIMATS

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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