000
AGXX40 KNHC 120554
MIMATS

MARINE WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
200 AM EDT WED OCT 12 2011

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

GULF OF MEXICO...
A 1008 MB LOW PRES ALONG THE FLORIDA PANHANDLE WITH TROUGH 
EXTENDING S TO 25N87W TO A 1009 MB LOW NEAR 23N92W. THE PRES 
GRADIENT ACROSS THE REGION WILL CONTINUE TO BE WEAK WITH LATEST 
BUOY OBSERVATIONS INDICATING WINDS 10 KT OR LESS THE PRES 
PATTERN WILL REMAIN WEAK THROUGH LATE THU THEN HIGH PRES 
ASSOCIATED WITH A COLD FRONT IN THE NE GULF WILL BUILD S FRI AND 
SAT. MODERATE NW WINDS BEHIND THE FRONT WILL SHIFT NE AND TO 
15-20 KT AS THE HIGH PRES STRENGTHENS. THE HIGH COMBINED WITH 
LOWER PRES TO THE S OF THE AREA WILL BRING E TO NE WINDS 20 KT 
ACROSS THE ENTIRE AREA OVER THE WEEKEND.

SW N ATLC S OF 31N W OF 65W...
THE PRES GRADIENT HAS WEAKENED ACROSS THE AREA AND WINDS ARE 15 
KT OR LESS. A WEAK TROUGH WILL ENTER NW PORTION OF THE AREA WED 
NIGHT...THEN A REINFORCING COLD FRONT WILL MOVE OFF THE COAST OF 
NE FLORIDA FRI. THE FRONT WILL MOVE TO 31N72W TO THE STRAITS OF 
FLORIDA AND WEAKEN SAT...THEN DISSIPATE SUN. MODERATE W-NW WINDS 
BEHIND THE FRONT FRI WILL SHIFT NE SAT AND SUN AS HIGH PRES 
RIDGE BUILDS OVER THE SE U.S.

CARIBBEAN SEA AND TROPICAL N ATLC... 
LIGHT TO MODERATE E WINDS WILL CONTINUE OVER MOST OF THE REGION 
THROUGH THU NIGHT. WINDS WILL INCREASE TO 15-20 KT OVER THE 
SOUTHERN TROPICAL ATLC ZONE THU THEN SPREAD W INTO THE EASTERN 
CARIBBEAN FRI..THEN DECREASE TO 15 KT SAT AS A WEAKENING COLD 
FRONT MOVES INTO THE ATLC AND THE RIDGE TO THE N WEAKENS. WINDS 
AND SEAS ARE EXPECTED TO INCREASE IN THE NW CARIBBEAN THIS 
WEEKEND AS LOW PRES DEVELOPS AND INTENSIFIES OVER CENTRAL 
AMERICA.

WARNINGS...
GULF OF MEXICO...
.NONE.

CARIBBEAN SEA...
.NONE.

TROPICAL N ATLC...
.NONE.

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

$$
FORECASTER DGS