000
AGXX40 KNHC 091848
MIMATS

MARINE WEATHER DISCUSSION        
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
245 PM EDT SAT MAY O9 2009
 
MARINE WEATHER DISCUSSION FOR GULF OF MEXICO...CARIBBEAN SEA AND 
SOUTHWEST NORTH ATLC S OF 31N W OF 55W.

HIGH PRES OVER THE NORTHERN GULF OF MEXICO WILL HOLD THROUGH 
WED MAINTAINING GENERALLY AN E-SE FLOW WIND REGIME THROUGHOUT
...EXCEPT SE-S STRONGER FLOW OF 15-20 KT OVER THE FAR WRN 
PORTION. ON MON THE GRADIENT THEN RELAXES OVER JUST ABOUT THE 
ENTIRE GULF MON IN RESPONSE TO THE RIDGE WEAKENING IN ADVANCE OF 
AN APPROACHING COLD FRONT. THE FRONT WILL LAY JUST INLAND THE 
NRN GULF COAST THEN BECOME DIFFUSE ON TUE. SLY WINDS INCREASE TO 
15-20 KT ONCE AGAIN OVER MUCH OF THE WRN GULF ON WED...THEN
DIMINISH SOME ON THU WHILE MOSTLY LIGHT WINDS WITH LOW SEA
STATE REMAINS ELSEWHERE.

RIDGE ALONG 28N WILL CONTINUE THROUGH TONIGHT...THEN BEGIN TO 
SHIFT SE ON SUN AS A COLD FRONT APPROACHES THE SE U.S. COAST. 
THE RIDGE WILL MOVE TO ALONG 27N BY LATE MON INTO TUE AND TO E 
OF AREA WED AS THE FRONT REACHES FROM 31N68W TO NE FLORIDA BY 
TUE AFTERNOON. LOW PRES IS FORECAST TO FORM JUST N OF THE AREA 
NEAR THE SE U.S. COAST MON AND TUE AND TRACK NE PUSHING THE FRONT
S TO ALONG 29N AND NW INTO SE GEORGIA ON WED. STRONG HIGH PRES
TO THE N OF THE WILL BUILDS S AND WASH OUT THE FRONT ON THU.

S TO SW WINDS ARE EXPECTED TO INCREASE UP TO 15-20 KT WITHIN 240 
NM E OF THE FRONT TUE AND WED THEN SHIFT TO THE NE AT 15-20 KT 
WITH FRONTAL PASSAGE.   

QUIKSCAT DATA FROM THIS MORNING SHOWED NE-E WINDS OF 20-25 KT IN 
THE SW CARIBBEAN SEA S OF 15N BETWEEN 66W-82W WILL DIMINISH IN 
AREAL THROUGH THU AS HIGH PRES OVER THE ATLC SHIFTS E. SE WINDS
OF 15-20 KT IN THE NW CARIBBEAN SEA S OF 18N WILL DIMINISH TO
10-15 KT TUE OR WED. WINDS WILL BE MAINLY E 10-15 KT OVER JUST
ABOUT THE ENTIRE SEA ON THU...WITH THE EXCEPTION OF THE SE PART
WHERE WINDS WILL BE IN THE 15-20 KT RANGE.

ATLC...
.NONE. 

CARIBBEAN...
.NONE.

GULF OF MEXICO...
.NONE.

FORECASTER DGS. TROPICAL PREDICTION CENTER.