000
AGXX40 KNHC 041650
MIMATS

MARINE WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
100 PM EDT SUN MAY 4 2008

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

MID-UPPER LEVEL RIDGE MAINTAINS ANTICYCLONIC FLOW ACROSS ENTIRE 
GULF OF MEXICO AS WEAK SHORT WAVE TROUGH PUSHES COLD FRONT OVER 
FLORIDA PANHANDLE SUPPORTED BY 105 KT JET CORE.  LITTLE IN THE 
WAY OF MOISTURE AVAILABLE FOR ANY SIGNIFICANT DEEP CONVECTION.
MOST OF GULF OF MEXICO REMAINS DRY EXCEPT NEW SWATH ENTERING N 
OF 26N W OF 90W. 

LONGWAVE TROUGH ALOFT CONTROLS FLOW OVER SW N ATLC AND N HALF
OF CARIBBEAN EXTENDING DRY AIR MASS FURTHER E TO 60W.  SOME 
MOISTURE COMING OUT OF N SOUTH AMERICA ADVECTS NE ON SW 
PERIPHERY OF MID-ATLC RIDGE. 
  
GULF OF MEXICO...
WEAK COLD FRONT FROM PENSACOLA FLORIDA TO BROWNSVILLE TEXAS MOVE 
E AND DISSIPATES OVER NERN GULF AS UPPER SUPPORT DESERTS NE AND 
LACK OF AVAILABLE MOISTURE NEGATES MORE ENERGY SOURCE.  WIND  
AND SEAS SHOULD CONTINUE TAME UNTIL WED WHEN NEW COLD FRONT 
APPROACHES TEXAS SE COAST AND RETURN FLOW KICKS BACK IN.

CARIBBEAN SEAS CONTINUES WITH FAR BETTER CONDITIONS THAN AVERAGE 
AS PRES GRADIENT EASES WITH COLD FRONT FORCING ATLC RIDGE 
FURTHER E.  GLOBAL MODELS SOLUTIONS MAINTAIN STATUS QUO AS 
LITTLE IN STORE TO UPSET PRESENT WEATHER.  

COLD FRONT ENTERS SW N ATLC MON WITH SLIGHT INCREASE IN WIND AND 
SEAS MOSTLY N OF 27N.  WATERS S OF 27N REMAIN UNDER E FLOW WITH 
INCREASING SEAS AS HIGH PRES DRIFTS S...BUT RELAXES LATE IN 
FORECAST PERIOD WHEN IT SHIFTS EWD.

WARNINGS...
ATLC...
NONE. 

CARIBBEAN...
NONE.

GULF OF MEXICO...
NONE.

.FORECASTER WALLY BARNES. TROPICAL PREDICTION CENTER.