000
AGXX40 KNHC 221851
MIMATS

MARINE WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
250 PM EDT TUE JUL 21 2009

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

WEAK HIGH PRES RIDGE BUILDS ACROSS THE NORTHERN GULF OF MEXICO. 
MOSTLY LIGHT WINDS ACROSS THE AREA EXCEPT OVER THE FAR W PORTION 
OF THE AREA WHERE SLY WINDS ARE AROUND 15 KT W OF 95W. THESE 
CONDITIONS ARE EXPECTED TO CONTINUE THROUGH THE REMAINDER OF THE 
WEEK...THEN THE WINDS OVER THE WESTERN GULF DECREASE OVER THE 
WEEKEND. LOWER PRES DEVELOPS OVER THE SOUTHERN PLAINS COMBINED
THE RIDGE WILL PRODUCE 15-20 KT SLY WINDS OVER THE WESTERN GULF
ON MON.

SURFACE TROUGH IN THE WESTERN ATLC BETWEEN THE NW BAHAMAS AND 
THE COAST OF FLORIDA...EXTENDING FROM 28N78W TO 25N75W. MODERATE 
TO STRONG ELY WINDS CONTINUE SE OF THE TROUGH IN THE 20-25 KT 
RANGE. A LARGE AREA OF CONVECTION ALSO CONTINUES E OF THE 
TROUGH. THE TROUGH WILL DRIFT TO ALONG THE CENTRAL COAST OF 
FLORIDA THROUGH THU AND MOVE N OF THE AREA FRI. THE STRONG WINDS 
SE OF THE TROUGH WILL CONTINUE THROUGH THU THEN DECREASE FRI AS 
THE TROUGH MOVES N OF THE AREA. RIDGE BUILDS ALONG 27N/28N OVER 
THE WEEKEND THEN MOVES N TO AROUND 29N MON.

A COUPLE OF TROPICAL WAVES ARE MOVING RAPIDLY THROUGH THE 
CARIBBEAN AREA...AROUND 20-25 KT. ONE ALONG 79W AND ANOTHER 
AROUND 64W/65W. NEITHER WAVE HAS ANY SIGNIFICANT CONVECTION.
QUIKSCAT PASS FROM EARLIER THIS MORNING INDICATES THE STRONGEST 
ELY WINDS E OF 75W. THE STRONG WINDS SPREAD WWD TO S OF 17N E OF 
82W BY THU. WINDS 20-25 KT WITH SEAS 8-11 FT WILL CONTINUE 
THROUGH THE WEEKEND INTO MON...HOWEVER WINDS AND SEAS WILL 
DECREASE SOME OVER THE EASTERN CARIBBEAN.

ATLC...
.NONE. 

CARIBBEAN...
.NONE.

GULF OF MEXICO...
.NONE.

$$
FORECASTER DGS