000
AGXX40 KNHC 301654
MIMATS

MARINE WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
100 PM EDT MON JUN 30 2008

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

ATLC SFC HIGH N OF THE AREA IS BRINGING DOMINANT SELY FLOW 
ACROSS MUCH OF THE SW N ATLC...TURNING MORE SLY TO SWLY CLOSER 
TO THE N FL COAST IN ADVANCE OF A WEAKENING TROUGH PUSHING 
OFFSHORE TUE MORN.  WINDS SHOULD GENERALLY BE LIGHT ACROSS MUCH 
OF THE REGION BUT INCREASING IN THE REGION AHEAD OF THIS TROUGH.

A TIGHT PRESSURE GRADIENT BETWEEN THE SFC RIDGE ALONG 28N AND 
LOW PRESSURE OVER NRN SOUTH AMERICA SHOULD ALLOW FOR MODERATE 
ELY WINDS ACROSS MUCH OF THE CARIBBEAN.  A TRPCL WAVE 
CURRENTLY NEAR 64W IS IN THE VICINITY OF A REGION OF UPPER LEVEL 
DIFFLUENCE THAT IS ENHANCING CONVECTION E OF THE SERN LESSER 
ANTILLES.  ANOTHER TRPCL WAVE CURRENTLY LIES NEAR 80W.  
CONVECTION WITH THIS WAVE IS LIMITED AS IS LIES IN A REGION OF 
UPPER LEVEL CONVERGENCE WEDGED BETWEEN THE UPPER TROUGH 
EXTENDING FROM HISPANIOLA SWD INTO COLUMBIA AND AN UPPER RIDGE 
OVER THE FAR WRN CARIBBEAN SEA.  

HIGH PRES...WITH A RIDGE AXIS CENTERED ALONG 28N...WILL BE THE 
DOMINANT FEATURE OVER THE GULF OF MEXICO...YIELDING ELY TO SELY 
FLOW OVER THE REGION.  A WEAK TROUGH OF LOW PRESSURE AT THE SFC 
IS DIPPING SWD INTO THE NRN WATERS OF THE GULF OF MEXICO 
OVERNIGHT TONIGHT...BUT WINDS ARE EXPECTED TO REMAIN RELATIVELY 
LIGHT.  HIGH PRES SHOULD RE-BUILD OVER THE AREA ON WED.

ATLANTIC...
.NONE.

CARIBBEAN...
.NONE.

GULF OF MEXICO...
.NONE.

.FORECASTER JSC. TROPICAL PREDICTION CENTER.