000
AGXX40 KNHC 202022 AAA
MIMATS

Marine Weather Discussion...Updated
NWS National Hurricane Center Miami FL
422 PM EDT Tue Apr 20 2021

Updated Gulf of Mexico 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...Updated

A stationary front extends from near Sarasota, Florida to 24N90W 
to a 1014 mb low at 21N95W. The stationary front will transition 
back to a cold front reaching the far southeastern Gulf Wed 
night. The low is forecast to lose its identity along the front 
by early Wed. Scattered showers and thunderstorms will be 
focused along and near the front tonight into Wed morning. Some 
of this activity may produce strong gusty winds and rough seas. 
High pressure in its wake will shift eastward through Sat night 
as a cold front reaches eastern Texas. Fresh to strong southerly 
return flow will develop over the NW Gulf Fri, shift to the 
central Gulf early Sat and diminish by late Sat as the cold 
front moves across the NW Gulf and central Gulf waters. The 
front will become stationary from the east- central Gulf to the 
west-central Gulf Sun and Sun night as a weak gradient sets up 
over the area.

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

Fresh to strong trade winds over the central Caribbean will
diminish by late in the week as high pressure over the central
Atlantic shifts eastward, except near the coast of Colombia
where these winds will persist through the period. 

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

A weak cold front extends from 31N67W to 28N75W, where it
transitions to a stationary front to Melbourne, Florida. The 
cold front will re-orient itself as a stationary front near 30N,
while the stationary portion will transition to a cold front 
and slowly continue southward. By early Wed, the stationary 
front will have lifted back to the N as a warm front, while the 
cold front will extend from NE of the Bahamas to the Florida 
Keys, and from near 31N69W to the central Bahamas and to west- 
central Cuba by late Wed night as yet another cold front moves 
over the NW waters. By late Thu, both fronts will be weakening NE
of the Bahamas as high pressure builds in over the area. The 
high pressure will shift eastward through Sat night as a stronger
cold front approaches the southeastern U.S. coast. This front 
is expected to move across the NW and north-central waters
Sun and Sun night preceded by fresh to strong southerly winds 
and possible scattered showers and thunderstorms.
 

$$

.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.