000
AGXX40 KNHC 120757
MIMATS

MARINE WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
300 AM EDT FRI JUN 12 2009

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

GULF OF MEXICO...
HIGH PRES CENTER 1015 MB AT 28N88W HAS RIDGE EXTEND ACROSS 
ENTIRE GULF WITH GENTLE BREEZE ALONG MOST AREAS S OF 25N AND 
SLIGHT SEAS...EXCEPT ALONG SE TEXAS COAST WHERE RETURN FLOW 
INCREASES TO MODERATE BREEZE.  LIGHT ELSEWHERE N OF 25N AND 
SMOOTH SEAS.  LITTLE CHANGE EXPECTED THROUGH MON.   

CARIBBEAN AND TROPICAL N ATLC W OF 55W... 
WEAK SURFACE TROUGH ALONG 80W IN WESTERN CARIBBEAN MOVES W INTO 
CENTRAL AMERICA BY TONIGHT AND SAT.  MODERATE TO STRONG 
DIFFLUENCE ALOFT ON E SIDE OF TROUGH ENHANCED DEEP CONVECTION 
ALONG 76W WHICH QUICKLY WANES AS THE DRY AIR MASS ENTRAINS INTO 
SWATH OF TROPICAL MOISTURE AND SHEARS CLOUD DEVELOPMENT. 

HIGH PRES OVER CENTRAL ATLC MAINTAINS STEADY FLOW OF E-SE FRESH 
BREEZE ACROSS MOST OF EASTERN CARIBBEAN AND TROPICAL N ATLC.  
WEAK TROPICAL WAVE...CURRENTLY ALONG 55W S OF 14N MAKING ITS WAY 
INTO TROPICAL N ATLC TONIGHT MOVING AT 15 KT WILL ENTER E 
CARIBBEAN LATE FRI THEN MOVE THROUGH CENTRAL CARIBBEAN SUN AND 
MON.  PRESENT SCATTERED MODERATE CONVECTION EXPECTED TO DIMINISH 
DURING NEXT 24 HR AS WAVE ENCOUNTERS DRY AIR MASS AND ADVERSE 
WINDS ALOFT. 

SW N ATLC...    
DEEP LAYERED UPPER LEVEL TROUGH CONTINUES ADVECTS ABUNDANT 
MOISTURE SWATH ACROSS BASIN E OF 75W.  CUT OFF CYCLONIC VORTEX 
AT 25N74W CONTRIBUTES TO DIFFLUENT FLOW ALOFT WITH DOWNSTREAM 
RIDGE...BUT QUICKLY ENTRAINS DRY AIR MASS INTO MOIST SWATH 
CURTAILING CONVECTION.  ATTENDANT SURFACE LOW PRES TROUGH FROM 
29N73W TO 31N70W EXPECTED TO MOVE OUT OF AREA TODAY.

WARNINGS

ATLC...
.NONE.

CARIBBEAN...
.NONE.

GULF OF MEXICO...
.NONE.

FORECASTER WALLY BARNES. TROPICAL PREDICTION CENTER.