000
AGXX40 KNHC 241726
MIMATS

MARINE WEATHER DISCUSSION  
NWS NATIONAL HURRICANE CENTER MIAMI FL
140 PM EDT THU MAR 24 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 WEAK COLD FRONT HAS PUSHED SE OVER THE NW WATERS THIS MORNING. 
EXPECT THE E PORTION TO CONTINUE SE REACHING SW FL...BUT THE W 
PORTION...ALREADY STALLING...WILL BEGIN TO LIFT NE EARLY TONIGHT 
ADVECTING SOME MOISTURE ACROSS THE NW COASTAL PLAINS THROUGH AT 
LEAST FRI. A NW TO SE RIDGE WILL BUILD BEHIND THE FRONT WITH A 
HIGH CENTER DEVELOPING ALONG THE RIDGE AXIS FRI. BY SAT THE HIGH 
WILL MEANDER OVER THE SE GULF WITH A RIDGE DISSECTING THE GULF 
FROM SE TO NW WITH INCREASING SLY RETURN FLOW...STRONGEST OVER 
THE S CENTRAL WATERS. SLY WINDS WILL DIMINISH OVER THE NW WATERS 
EARLY SUN WITH A PRE FRONTAL OR RETURN FLOW TROUGH SETTING UP 
OVER THE W GULF. WINDS WILL BECOMING NE 10 KT TO THE W OF THE 
TROUGH AXIS...WITH A COLD FRONT MOVING OFF THE TX COAST MERGING 
WITH THE TROUGH LATE MON. THE GRADIENT TIGHTENS MON BEHIND THE 
MERGED BOUNDARY INCREASING NE WINDS TO 15 TO 20 KT.   

SW N ATLC W OF 55W...
A COLD FRONT IS APPROACHING THE GA COAST ATTM AND WILL SLIP INTO 
THE NW WATERS THIS EVENING. THE FRONT WILL REACH FROM 31N55W TO 
28N65W STALLING TO 31N75W LATE FRI. THE FRONT WILL REACH ALONG 
28N55W TO 29N65W TO 31N73W SAT. AN E TO W RIDGE WILL LYE ALONG 
23N THROUGH EARLY SAT...THEN SHIFT N TO ALONG 25N SUN AND MON 
PUSHING THE FRONTAL REMNANTS N OF AREA BY LATE SAT NIGHT. THE 
GRADIENT TIGHTENS NW OF THE RIDGE SUN IN ADVANCE OF THE NEXT 
COLD FRONT MOVING OFF THE GA COAST AROUND SUNRISE MON. LATEST 
GUIDANCE SUGGESTS THIS SECOND FRONT WILL BE STRONGER...AND REACH 
FROM BERMUDA TO CENTRAL FL AROUND SUNRISE TUE...CONTINUING 
FURTHER SE OVER WATERS E OF 70W...BUT LIFTING N TUE AFTERNOON 
ACROSS ATLC WATERS W OF 72W. 

CARIBBEAN SEA AND TROPICAL N ATLC W OF 55W...
AS THE E TO W ATLC RIDGE N OF THE AREA SHIFTS S TO 23N THE 
EASTERLY TRADES WILL DIMINISH OVER THE NORTHERN TROPICS. EVEN 
THE NORMALLY ENHANCED NE-E WINDS ALONG THE N COAST OF COLOMBIA 
WILL RELAX SOME EARLY THIS WEEKEND. THE ATLC RIDGE WILL SHIFT N 
LATE THIS WEEKEND WITH THE EASTERLIES INCREASING AGAIN SUN 
THROUGH TUE. 

WARNINGS..

ATLC...
.NONE.

CARIBBEAN...
.NONE.

GULF OF MEXICO...
.NONE.

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

$$
FORECASTER NELSON