000
AGXX40 KNHC 241729
MIMATS

MARINE WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
230 PM EDT TUE JUN 24 2008

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

UPPER LEVELS...
TRPCL UPPER TROPOSPHERIC TROUGH...TUTT...MEANDERS ACROSS SW N 
ATLC BASIN WITH VERY DRY AIR MASS WITHIN 4 DEG OF AXIS FROM 
28N65W TO 21N76W.  TRPCL MOISTURE ADVECTED NE FROM SOUTH AMERICA 
CONTINENT BY UPPER LEVEL RIDGE ANCHORED AT 13N57W.  PLENTY OF 
MOISTURE ALOFT ALSO AVAILABLE ELSEWHERE NW OF TUTT OVER FLORIDA.
UPPER LEVEL TROUGH OVER GLFMEX HAS WEAK 35-40 KT WIND MAXIMA 
OVER FLORIDA PENINSULA WHICH LIKELY ENHANCE MORE CONVECTION IN 
THE MIDST OF DAYTIME HEATING.  

SURFACE...
RIDGE EXTENDS ALONG 28N-29N ACROSS SW N ATLC AND GLFMEX 
EXPECTED TO DRIFT N TO 31N AND BECOME STATIONARY THROUGH 
FORECAST PERIOD.  DRY AIR MASS OVER SE BAHAMAS LIKELY TO SPLIT 
TRPCL WAVE NOW ALONG 72W WITH CREST FOLLOWING THE BAHAMA ISLAND 
CHAIN NW WHILE REMAINDER OF WAVE CONTINUE W OVER WRN CARIBBEAN S 
OF CUBA. 

RIDGE STRENGTHENS BEHIND TRPCL WAVE WITH WINDS S OF 24N AND OVER 
CARIBBEAN INCREASING TO 25-30 AND BUILDING SEAS TO 15 FT OR 
ABOVE IN LONG PERIOD...8-10 SECONDS...E SWELL.  NWW3 APPEARS TO 
HAVE GOOD HANDLE ON IT WITH GFS IF ANYTHING A BIT CONSERVATIVE 
ON SWELL HEIGHT CONTRIBUTION IN CARIBBEAN AND SW N ATLC S OF 24N.

GULF OF MEXICO CONTINUES UNDER CONTROL OF RIDGE WITH LIGHT TO 
MODERATE SELY FLOW THROUGH FORECAST PERIOD...INCREASING SLIGHT S 
OF 25N W OF 90W WITHIN 24-36 HRS.

WARNINGS...
ATLANTIC...
NONE. 

CARIBBEAN...
NONE.

GULF OF MEXICO...
NONE.

.FORECASTER WALLY BARNES. TROPICAL PREDICTION CENTER.