000
AGXX40 KNHC 041846
MIMATS

MARINE WEATHER DISCUSSION        
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
300 PM EDT MON MAY O4 2009
 
MARINE WEATHER DISCUSSION FOR GULF OF MEXICO...CARIBBEAN SEA AND 
SOUTHWEST NORTH ATLC S OF 31N W OF 55W.

GULF OF MEXICO...
WEAK COLD FRONT ENTERED NW CORNER OF GULF THEN QUICKLY STALL AND 
LIFT NE INTO N GULF STATES TONIGHT.  RIDGE REMAIN IN PLACE 
DURING FORECAST PERIOD MAINTAINING FRESH SE BREEZE THROUGH GULF 
WATERS.  RETURN FLOW W OF 95W DIMINISH TODAY AS E-SE WINDS TAKE 
OVER ENTIRE AREA...BUT INCREASE ONCE AGAIN WED AS HIGH PRES OVER 
ATLC OCEAN REBUILDS. 
 
SW N ATLC...
WINDS INCREASE TO 20 KT N OF 29N W OF 78W AS WEAK COLD FRONT 
APPROACHES EASTERN SEABOARD BUT DIMINISH QUICKLY TONIGHT AS  
SURFACE TROUGH IN EASTERLIES MOVE W FROM ITS CURRENT POSTN OF 
30N71W TO 23N70W.  TROUGH BRINGS SCATTERED CONVECTION INTO 
BASIN WITH SE-NW ELONGATED AREA OF 20-25 KT WINDS TRAILING TO 
ITS SE.  TROUGH EXPECTED TO DRIFT NE THROUGH TONIGHT...STALL 
ALONG 74W AND DISSIPATE BY TUE.  WINDS AND SEAS E OF TROUGH 
EXPECTED TO REACH 20-25 KT AND 8-9 FT SEAS...BUT REMAIN UNDER 20 
KT AND 8 FT W OF AXIS.  HIGH PRES CENTER REBUILDS W ONCE TROUGH 
WEAKENS WED THROUGH FRI.

CARIBBEAN AND TROPICAL N ATLC...
TROUGH AXIS ALONG 66W S OF 19N WITH CLEAR ASSOCIATED WIND SHIFT 
WHILE DIMINISHING ACROSS ENTIRE BASIN AS PRES GRADIENT EASE. 
TROUGH REACH 74W AND WEAKEN THEN BECOME DIFFUSE WED.  E WINDS 
INCREASE OVER TROPICAL N ATLC TUE THROUGH THU AND LONG FETCH 
UNDER LARGE ATLC RIDGE BRINGS MODERATE SWELLS INTO AREA.

ATLC...
.NONE.. 

CARIBBEAN...
.NONE.

GULF OF MEXICO...
.NONE.

FORECASTER WALLY BARNES. TROPICAL PREDICTION CENTER.