000
AGXX40 KNHC 121757
MIMATS

MARINE WEATHER DISCUSSION 
NWS NATIONAL HURRICANE CENTER MIAMI FL
200 PM EDT TUE APR 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...
ATLC RIDGE EXTENDING ACROSS NRN GULF MOVE E AS COLD FRONT REACH 
MS DELTA TO NW BAY OF CAMPECHE PRECEDED BY WINDS SHIFT ALONG 
TROUGH.  ASSOCIATED WIND SHIFT HAS DIMINISHED TO 10-15 KT E OF 
FRONT WHILE NLY WINDS ALONG THE TX COAST WERE AT 20 KT 00Z.  
COLD FRONT TO REACH EXTREME SE WATERS LATE TONIGHT AND OUT OF 
GULF WED.  MOISTURE GUIDANCE HANGS ONTO SOME FRONTAL REMNANTS 
OVER YUCATAN PENINSULA WED IN THE FORM OF N-S ORIENTATED TROUGH. 
RIDGE RETURNS QUICKLY DISSECTING GULF FROM FL PANHANDLE TO SW 
BAY OF CAMPECHE WED NIGHT...WITH SE RETURN FLOW SPREADING E 
ACROSS ENTIRE GULF LATE THU.  NEXT FRONT REACHES TX COAST FRI 
NIGHT AND EXTEND FROM FL BIG BEND TO NW BAY OF CAMPECHE SAT... 
AND STALL OVER FL STRAITS WITH W PORTION MOVING BACK N LATE SAT.

SOUTHWEST N ATLC W OF 55W...
RIDGE EXTENDS FROM BERMUDA TO CENTRAL FL WITH SLY FLOW EXPECTED 
TO INCREASE ALONG FL COAST IN ADVANCE OF COLD FRONT MOVING OFF 
GA COAST TODAY.  FRONT MOVES E OF AREA TONIGHT.  FRESH SLY WINDS 
INCREASE W OF 75W IN ADVANCE OF SECOND WEAK COLD FRONT MOVING 
OFF FLORIDA COAST SAT REACHING FROM 31N73W TO 27N76W BEFORE 
BECOMING DIFFUSE LATE SAT.      

CARIBBEAN SEA AND TROPICAL N ATLC...
LARGE AREA OF CONVECTION OVER ERN CARIBBEAN AND TROPICAL ATLC 
ZONES DUE TO PERSISTENT LOW LEVEL TROUGH AND UPPER LEVEL 
DIFFLUENT FLOW.  EXPECT TROUGH TO DRIFT W INTO WRN CARIBBEAN THU 
BEFORE DISSIPATING FRI.  LIGHT TO MODERATE E BREEZE CONTINUE 
ELSEWHERE OVER BASIN THROUGH FORECAST PERIOD.

WARNINGS..

ATLC...
.NONE.

CARIBBEAN...
.NONE.

GULF OF MEXICO...
.NONE.

FOR ADDITIONAL INFORMATION PLEASE VISIT 
HTTP://WWW.HURRICANES.GOV/MARINE

$$
FORECASTER WALLY BARNES