000
AGXX40 KNHC 091730
MIMATS

MARINE WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
130 PM EDT THU MAY 9 2013

MARINE WEATHER DISCUSSION FOR THE GULF OF MEXICO...CARIBBEAN
SEA AND TROPICAL N ATLANTIC FROM 07N TO 19N BETWEEN 55W AND
64W...AND THE SW N ATLANTIC INCLUDING THE BAHAMAS.

...GULF OF MEXICO...                                         
MODEL PREFERENCE: BLEND OF GFS WITH PREVIOUS OFFICIAL GRIDS WITH
HIGH CONFIDENCE

A 1021 MB HIGH PRES IS CENTERED NEAR 28N85W WITH A RIDGE W TO
28N96W. THE HIGH WILL REMAIN NEARLY STATIONARY THROUGH TONIGHT
THEN WEAKEN TO A RIDGE ALONG 28N E OF 90W THROUGH SAT EVENING. THE
RIDGE WILL WEAKEN SAT THROUGH MON ALLOWING FOR A WEAK COLD FRONT
TO MOVE OFF THE LOUISIANA AND TEXAS COAST EARLY ON SAT. THE FRONT
WILL WEAKEN AS IT MOVES SE REACHING FROM NE FLORIDA TO 26N93W
WHERE IT STALLS INTO THE SW GULF BY SUN EVENING. THE N PORTION OF
THE FRONT PORTION WILL MOVE E OF THE GULF SUN NIGHT S PORTION WILL
DISSIPATE.

...CARIBBEAN SEA AND TROPICAL N ATLANTIC FROM 07N TO 19N BETWEEN
55W AND 64W...
MODEL PREFERENCE: BLEND OF GFS INTO PREVIOUS OFFICIAL GRIDS WITH
HIGH CONFIDENCE

THE PRES GRADEINT HAS INCREASED ACROSS THE MUCH OF THE S CENTRAL
CARIBBEAN AND NE-E WINDS HAVE INCREASED TO 20-25 KT. ELSEWHERE
A WEAKER PRES PATTERN IS ALLOWING FOR LIGHTER NE-E TRADES OF
10-15 KT...WITH THE EXCEPTION OF NE-E WINDS 15-20 KT IN THE NRN
PORTION OF THE TROPICAL ATLC ZONE. SEAS WILL BUILD TO 8-10 FT
ACROSS THE S CENTRAL AND PORTIONS OF THE SW CARIBBEAN FRI THEN
DECREASE LATER IN THE WEEKEND. SURFACE TROUGH ALONG 79W WILL
WEAKEN AS IT MOVES TO NEAR 80W EARLY THIS EVENING AND DISSIPATE
DURING FRI.

...SW N ATLANTIC INCLUDING THE BAHAMAS...
MODEL PREFERENCE: BLEND OF GFS WITH PREVIOUS OFFICIAL GRIDS WITH
HIGH CONFIDENCE

SURFACE TROUGH FROM 25N72W TO HAITI WILL MOVE LITTLE THROUGH
TONIGHT THEN BEGIN TO WEAKEN AS IT EXTENDS FROM 28N73W TO EASTERN
CUBA BY FRI EVENING AND DISSIPATE SAT ACROSS THE CENTRAL BAHAMAS.
A RIDGE WILL EXTEND FROM BERMUDA TO CENTRAL FLORIDA ON SAT THEN
SHIFT E AS A SLOW MOVING WEAK COLD FRONT MOVES INTO THE FAR NW
PORTION EARLY ON SUN. THE FRONT IS EXPECTED TO REACH FROM NEAR
31N77W TO S FLORIDA BY LATE MON.

.WARNINGS...ANY CHANGES IMPACTING COASTAL NWS OFFICES WILL BE
COORDINATED THROUGH AWIPS 12 PLANET CHAT OR BY TELEPHONE:

.GULF OF MEXICO...
GMZ011...NONE.
GMZ013...NONE.
GMZ015...NONE.
GMZ017...NONE.
GMZ019...NONE.
GMZ021...NONE.
GMZ023...NONE.
GMZ025...NONE.

.CARIBBEAN SEA AND TROPICAL N ATLANTIC FROM 07N TO 19N BETWEEN
55W AND 64W...
AMZ011...NONE.
AMZ013...NONE.
AMZ015...NONE.
AMZ017...NONE.
AMZ019...NONE.
AMZ021...NONE.
AMZ023...NONE.
AMZ025...NONE.
AMZ027...NONE.
AMZ029...NONE.
AMZ031...NONE.
AMZ033...NONE.
AMZ035...NONE.
AMZ037...NONE.
AMZ039...NONE.

.SW N ATLANTIC INCLUDING THE BAHAMAS...
AMZ111...NONE.
AMZ113...NONE.
AMZ115...NONE.
AMZ117...NONE.
AMZ119...NONE.
AMZ121...NONE.
AMZ123...NONE.
AMZ125...NONE.
AMZ127...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.HURRICANES.GOV/MARINE

$$
.FORECASTER DGS. NATIONAL HURRICANE CENTER.