000
AGXX40 KNHC 191755
MIMATS

MARINE WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
200 PM EDT THU APR 19 2012

MARINE WEATHER DISCUSSION FOR THE GULF OF MEXICO...CARIBBEAN SEA
AND SOUTHWEST NORTH ATLC S OF 31N W OF 55W.

GULF OF MEXICO...
STATIONARY FRONT FROM 1013 MB LOW PRES CENTER AT 30N84W TO 
YUCATAN PENINSULA. LOW PRES MOVES N OF THE AREA LATER TODAY AS 
COLD FRONT DISSIPATES. WEAK HIGH PRES BUILD OVER NORTHERN GULF 
IN WAKE OF THE FRONT. THE HIGH MOVES E AHEAD OF AN APPROACHING 
COLD FRONT FRI. THE FRONT WILL EXTEND FROM THE CENTRAL LOUISIANA 
COAST TO TAMPICO MEXICO SAT AND FROM THE FLORIDA BIG BEND TO THE 
YUCATAN PENINSULA SUN...WEAK LOW PRES DEVELOPS ALONG THE FRONT 
NEAR 27M85W. STRONG NLY WINDS W OF THE FRONT...UP TO 30 KT SAT 
AND SUN. THE FRONT MOVES E OF THE AREA MON WITH HIGH PRES RIDGE 
BUILDING ACROSS THE NORTHERN GULF AND DECREASING WINDS EARLY 
NEXT WEEK.

SW NORTH ATLC S OF 31N W OF 65W...
HIGH PRES CENTER 1019 MB OVER NEAR 27N73W WILL KEEP LIGHT TO 
MODERATE WINDS ACROSS ENTIRE AREA THROUGH FRI NIGHT. SLY WINDS 
INCREASE ACROSS THE NW PORTION OF THE AREA SAT AHEAD OF AN 
APPROACHING COLD FRONT. THE FRONT WILL MOVE OFF THE SE U.S. 
COAST LATE SUN AND EXTEND FROM 31N72W TO THE STRAITS OF FLORIDA 
MON AND FROM 31N67W TO CENTRAL CUBA TUE. SLY WINDS INCREASE TO 
30 KT AHEAD OF THE FRONT SUN AND TO 20 KT BEHIND THE FRONT. THE 
FRONT WEAKENS TUE AND THE WINDS DECREASE.

CARIBBEAN SEA...
HIGH PRES CENTERED NE OF BAHAMAS KEEPS MODERATE NE TO E WINDS 
OVER CARIBBEAN. WINDS DIMINISH TONIGHT AS HIGH PRES WEAKENS BUT 
SE WINDS INCREASE OVER NW CARIBBEAN LATE FRI AND SAT AHEAD OF 
COLD FRONT MOVING THROUGH GULF OF MEXICO. SOUTHERN PORTION OF 
THE FRONT WILL CLIP NW CARIBBEAN SAT AND SUN FOLLOWED BY 20 KT 
W-NW WINDS W OF FRONT. WEAKENED FRONT STALL AND DISSIPATE FROM 
CENTRAL CUBA TO EASTERN HONDURAS LATE SUN. HIGH PRES BUILD N OF 
AREA BEHIND FRONT AND MAINTAIN 15 KT NW TO N WINDS THROUGH 
YUCATAN CHANNEL TO GULF OF HONDURAS THROUGH TUE. 

TROPICAL N ATLC S OF 19N W OF 55W...
LIGHT TO MODERATE E TRADES PERSIST THROUGH FRI BUT BECOME FRESH 
E S OF 15N AS HIGH PRES STRENGTHENS N OF AREA. DECAYING NE 
SWELLS GET BELOW 6 FT BY LATE SUN OR MON.

NOTE... EFFECTIVE APR 3, 2012 AT 1800 UTC THE OFFSHORE WATERS
FORECAST ZONES CHANGED FOR THE CARIBBEAN AND SW N ATLANTIC AND
THE GULF OF MEXICO. ISSUANCE TIME FOR THE GULF OF MEXICO OFFSHORE
WATERS FORECASTS IS REFERENCED TO THE EASTERN TIME ZONE. FOR
DETAILS SEE WWW.NHC.NOAA.GOV/ABOUTTAFBPROD.SHTML#OWF

GRIDDED MARINE OUTPUT IS AVAILABLE AT 
WWW.NHC.NOAA.GOV/TAFB/GRIDDED_MARINE (LOWER CASE).

GULF OF MEXICO...
.NONE.

.CARIBBEAN SEA AND TROPICAL N ATLC...
.NONE.

.SW N ATLC...
.NONE.
    
FOR ADDITIONAL INFORMATION PLEASE VISIT
HTTP://WWW.HURRICANES.GOV/MARINE

$$
FORECASTER WALLY BARNES