Marine Interpretation Message
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000
AGXX40 KNHC 301814
MIMATS

Marine Weather Discussion
NWS National Hurricane Center Miami FL
214 PM EDT Sun Apr 30 2017

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 is moving across the Gulf waters and extends from SE
Louisiana to near Tampico Mexico. During the morning hours,
Tampico reported northerly winds of 20 kt with gusts to 30 kt.
Fresh to strong SE winds dominate the remainder of the Gulf ahead
of the front. This system is forecast to reach from the western
Florida Panhandle to the central Bay of Campeche tonight, and
from the Florida Big Bend to the eastern Bay of Campeche on
Monday. The front will lift north while dissipating on Tuesday.
Strong winds follow the front, reaching minimal gale force off
Tamaulipas based on a recent scatterometer pass. Winds are
forecast to increase to 30-40 kt off Veracruz later today. A gale
warning remains in effect for forecast zones GMZ017 and GMZ023
through this evening. A band of scattered to numerous showers
with embedded thunderstorms is associated with the front. Winds
and seas could be higher near the thunderstorms. Fresh southerly
return flow will set-up again across the western Gulf by
Wednesday, ahead of the next cold front forecast to enter the
Gulf early Thursday. Gales are possible again behind the front
and near the coastlines of Tamaulipas and Veracruz on Thursday.

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

A ridge located north of the area is supporting pulses of fresh
to strong east to southeast winds near the Gulf of Honduras,
easterly trade winds off Colombia and northwest Venezuela and a
smaller area south of Cabo Beata in southern Dominican Republic.
Latest scatterometer data confirmed the presence of these winds.
Fresh trade winds and seas 6 to 8 ft are expected over the
central Caribbean through late today along with fresh northeast
winds into the Windward Passage. Winds and seas diminish across
the region from Monday through the middle of next week as the
high pressure weakens and shifts east, leaving mainly fresh
trades off Colombia and gentle to moderate breezes elsewhere.

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

A ridge along 30N continues to support fresh to strong trade
winds south of 25N west of 70W from the Turks and Caicos across
the southern Bahamas to southeast Florida, with 5 to 8 ft seas in
open waters. Elsewhere moderate to fresh southeast winds are
noted with 3 to 5 ft seas. This pattern will persist into Monday.
Southeast to south return flow will increase off the coast of
northeast Florida through late Monday as a weakening cold front
approaches the area from the eastern Gulf of Mexico. The front
will stall along the Florida coast by early Tuesday then become
diffuse. Winds and seas diminish late Tuesday through mid week as
weak high pressure builds west along roughly 28N.

$$

.WARNINGS...Any changes impacting coastal NWS offices will be
coordinated through AWIPS II Collaboration Chat, or by
telephone:

.GULF OF MEXICO...
.GMZ017...W CENTRAL GULF FROM 22N TO 26N W OF 94W...
     Gale Warning today.
     GALE CONDITIONS POSSIBLE Thu.
.GMZ023...SW GULF S OF 22N W OF 94W...
     Gale Warning today.
     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 GR. National Hurricane Center.



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