000
AGXX40 KNHC 061743
MIMATS

MARINE WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
145 PM EDT TUE MAY 6 2008

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

GULF OF MEXICO... A 1020 MB SURFACE HIGH CURRENTLY OVER THE SE 
CONUS EXTENDS A RIDGE OVER THE ENTIRE GULF GIVING MOST OF THE 
AREA LIGHT TO MODERATE E TO SE WINDS. THE EXCEPTION IS OFF THE 
NORTHWEST COAST OF YUCATAN WHERE SCATTEROMETER SHOWED WINDS UP 
TO 20 KT. THE RIDGE AND SURFACE HIGH WILL SHIFT INTO THE WESTERN 
ATLANTIC ON WED. PRES GRADIENT BETWEEN THIS HIGH AND LOWER PRES 
OVER TEXAS WILL PRODUCE AN INCREASE IN WINDS AND SEAS OVER THE 
NW CORNER OF THE GULF. THE SOUTHERLY RETURN FLOW IS EXPECTED TO 
INCREASE TO 20 TO 25 KT WITH SEAS BUILDING TO 9 FT TONIGHT AND 
WED. FOR THE REMAINDER OF THE PERIOD...A SFC RIDGE WILL REMAIN 
IN CONTROL OF THE AREA WITH MOSTLY MODERATE SELY WINDS.  

CARIBBEAN AND TROPICAL N ATLANTIC...SCATTEROMETER DATA SHOW 
FRESH TO STRONG WINDS OFF THE COLOMBIAN COAST...BUT OTHERWISE 
LIGHT TO MODERATE WINDS PREVAIL ACROSS THE CARIBBEAN. A WEAK 
COLD FRONT IS ACROSS THE W ATLC AND WILL MOVE E AND EXTEND FROM 
31N64W TO THE SOUTHEASTERN BAHAMAS BY WED MORNING. WINDS WILL 
INCREASE ACROSS THE EASTERN AND CENTRAL CARIBBEAN AS HIGH PRES 
BUILDS TO THE NORTH BEHIND THE FRONT. FRESH TRADES PERSIST EAST 
OF THE WINDWARDS ISLANDS...AND MAY INCREASE SLIGHTLY BY MID WEEK 
AS A WEAK TROPICAL WAVE NOW ALONG 46W CONTINUES TO MOVE WWD INTO 
THE AREA. COMPUTER MODELS SHOW SEAS BUILDING TO 11 FT ACROSS THE 
TROPICAL ATLC BUT MAINLY EAST OF 55W. 

SW N ATLC...A WEAK COLD FRONT HAS ENTERED THE W ATLC THIS 
MORNING...AND IS EXPECTED TO MOVE E AND EXTEND FROM 31N64W TO 
THE SOUTHEASTERN BAHAMAS BY WED MORNING. SW WINDS ARE FORECAST 
TO REACH 20 TO 25 KT AHEAD OF THE FRONT BETWEEN N FLORIDA AND 
BERMUDA. LATEST MODEL RUN SUGGESTS THAT THESE WINDS MAY APPROACH 
GALE FORCE THU MORNING N OF 25N AND WITHIN 300 NM E OF FRONT. 
HIGH PRES BUILDS BEHIND THE FRONT...ALLOWING SOUTHERLY RETURN 
FLOW TO INCREASE OFF THE N FLORIDA COAST BY THURSDAY. 

WARNINGS...
ATLC...
NONE. 

CARIBBEAN...
NONE.

GULF OF MEXICO...
NONE.

.FORECASTER KB/GR. TROPICAL PREDICTION CENTER.