000
AGXX40 KNHC 210545
MIMATS

MARINE WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
145 AM EDT MON MAY 21 2007

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

GULF OF MEXICO...
15-20 KT NE WINDS CONTINUE E OF 90W WITH A FEW 25 KT REPORTS IN 
ON ELEVATED PLATFORMS ALONG FL KEYS. THE LOW LEVEL FLOW IS E-SE 
W OF 90W AND IN 10-15 KT RANGE. HIGH PRES N OF AREA WILL BE 
REINFORCED OVER NEXT COUPLE DAYS WHILE A BROAD TROUGH OVER W 
CARIBBEAN DRIFTS SLOWLY W ALLOWING THE PRES GRADIENT TO TIGHTEN 
AND SUPPORT E-SE 15-20 KT THROUGHOUT GULF...EXCEPT 20-25 KT SE 
PORTION WED NIGHT AND THU...THEN RELAXING A TAD THU NIGHT INTO 
FRI. 

SW N ATLC...HIGH PRES CURRENTLY OFF NE FL COAST IS EXPECTED TO 
SHIFT E AND BE REINFORCED BY HIGH PRES CURRENTLY OVER TN VALLEY 
THAT WILL SHIFT SE AND OFFSHORE THE CONUS WED. REMNANTS OF A 
FRONTAL BOUNDARY EXTENDS E TO W ACROSS NORTHERN BAHAMAS TO SE FL 
AND IS ACCOMPANIED BY ISOLATED TSTMS THROUGHOUT STRAITS OF FL. A 
SECOND FRONTAL TROUGH FROM BERMUDA TO WINDWARD PASSAGE WILL 
DRIFT W OVER WATERS W OF 55W WITH A VERY SLIGHT CHANCE OF LOW 
PRES DEVELOPMENT NEAR SE BAHAMAS. WINDS WILL GRADUALLY INCREASE 
OVER WATERS NW OF SECOND FRONTAL TROUGH...GENERALLY N OF 25N...
REACHING SUSTAINED 20-25 KT GUSTS TO 30 KT BY LATE WED AND 
CONTINUE THROUGH THU NIGHT. ELY SWELLS WILL BUILD TO ABOUT 11 FT 
N OF BAHAMAS AND 6-8 FT W OF BAHAMAS...ESPECIALLY DUE W OF 
PROVIDENCE CHANNEL. 

CARIBBEAN AND TROP N ATLC...
A TROUGH EXTENDING N-S ALONG 82W IS EXPECTED TO DRIFT SLOWLY W 
THROUGH FRI WITH BROAD LOW PRES OVER THE SW WATERS. A FRONTAL 
TROUGH OVER THE WINDWARD PASSAGE WILL ALSO CONTINUE THROUGH THE 
PERIOD. LOW LEVEL ELY FLOW AT 10-15 KT EXPECTED MOST AREAS WITH 
20 KT ALONG COLOMBIAN COAST AND JUST E OF TROUGH AXIS OVER THE 
SW CARIBBEAN WATERS.

WARNINGS...

ATLANTIC...
NONE.

CARIBBEAN...
NONE.

GULF OF MEXICO...
NONE.

FORECASTER NELSON