000
AGXX40 KNHC 070759
MIMATS

MARINE WEATHER DISCUSSION         
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
355 AM EDT TUE APR 07 2009

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

GULF OF MEXICO...
STRONG COLD FRONT JUST CROSSED YUCATAN PASSAGE OUT OF GULF AND 
GALE FORCE EVENT S OF 25N W OF 93W ALLOWED TO EXPIRE AT 06Z.  
NEVERTHELESS 1030 MB HIGH PRES CENTER TIGHTENS GRADIENT AND VERY 
STRONG N-NW WINDS...WITH POSSIBLE GALE FORCE GUSTS...WILL LINGER 
OVER MOST OF BASIN THROUGH TUE DIMINISHING FROM W TO E LATE TUE 
NIGHT.  AS RIDGE DRIFTS E...SOUTHERLY RETURN FLOW EXPECTED W OF 
90W THROUGH FRI AS NEW COLD FRONT APPROACHES AND ENTERS NW GULF 
LATE FRI. 

N ATLC...
STRONG COLD FRONT MOVING RAPIDLY ACROSS BASIN CARRIES SW WINDS 
EXPECTED TO REACH MINIMAL GALE FORCE N OF 29N TONIGHT.  GALE  
SHORT-LIVED AS UPPER SUPPORT FOR FRONT SHIFT NE AND FRONT 
WEAKENS.  STRONGER WINDS N OF FORECAST AREA PRODUCE LARGE LONG 
PERIOD SWELLS SPREADING INTO FORECAST WATERS E OF 72W THU AND 
FRI.  WINDS DIMINISH OVER ENTIRE BASIN AS HIGH PRES 1023 MB 
BEHIND COLD FRONT MOVES OFF FL COAST LATE WED AND STRENGTHENS TO 
1028 MB BEFORE CONTINUING EASTWARD INTO CENTRAL ATLC.

CARIBBEAN...
STRONG COLD FRONT CROSSED INTO YUCATAN CHANNEL TONIGHT WILL 
WEAKEN AND BECOME DIFFUSE WED NIGHT FROM MONA PASSAGE TO 
NICARAGUA.  ATLC COLD FRONT FORCES HIGH PRES RIDGE EASTWARD 
RELAXING PRES GRADIENT ACROSS CARIBBEAN SEA AND TRADE WINDS  
WEAKEN.  NEW RIDGE BUILDS BEHIND COLD FRONT AND QUICKLY MOVE E 
INTO SW N ATLC THU...ALLOWING FOR STRENGTHENING OF EASTERLY 
TRADE WINDS.

ATLC...
.GALE WARNING N OF 29N...AMZ080. 

CARIBBEAN...
.NONE.

GULF OF MEXICO...
.NONE.

FORECASTER WALLY BARNES. TROPICAL PREDICTION CENTER.