000
AGXX40 KNHC 250612
MIMATS

MARINE WEATHER DISCUSSION    
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
200 AM EDT WED AUG 25 2010

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

WEAK TROUGH IN THE MIDDLE AND NW GULF OF MEXICO FROM THE WESTERN 
FLORIDA PANHANDLE TO 27N95W. THE TROUGH WILL DRIFT SLOWLY W 
THROUGH THU. OTHERWISE THE PRES PATTERN ACROSS THE GULF OF 
MEXICO IS VERY WEAK WITH MOSTLY LIGHT WINDS ACROSS MUCH OF THE 
AREA. BUOY AND CMAN OBSERVATIONS INDICATE 5-10 KT WINDS ACROSS 
MUCH OF THE GULF...AND THESE CONDITIONS SHOULD PERSIST THROUGH 
TODAY AND TONIGHT.  LOWER PRES IS FORECAST TO DEVELOP IN THE BAY 
OF CAMPECHE TIGHTENING THE PRESSURE GRADIENT LATE THU THROUGH SAT
AND WINDS INCREASE TO AROUND 20 KT.

ATLC RIDGE WILL CONTINUE ALONG 27N THROUGH FRI BEFORE WEAKENING. 
THE HIGH COMBINED WITH LOW PRES JUST OFF THE SE U.S. COAST HAS 
TIGHTENED THE PRES GRADIENT AND SW WINDS HAVE INCREASED TO 20 KT 
ACROSS THE NW PORTION OF THE AREA. THESE WINDS WILL DECREASE TO 
BELOW 20 KT AS THE LOW AND ASSOCIATED TROUGH MOVE TO THE NE AND 
THE RIDGE WEAKENS. OTHERWISE...A WEAK PRES PATTERN WILL PREVAIL 
ACROSS THE REMAINDER OF THE AREA WITH MODERATE WINDS THROUGH 
FRI. DANIELLE WILL MOVE E OF THE AREA WITH WINDS INCREASING OVER 
THE FAR E PORTION OF THE AREA AND LARGE SWELLS WILL ALSO BUILD.

ELY TRADES OF 15-20 KT WILL CONTINUE ACROSS THE CENTRAL 
CARIBBEAN. THESE CONDITIONS WILL CONTINUE THROUGH TONIGHT THEN 
DECREASE THU AND FRI AS THE ATLC RIDGE WEAKENS AND THE PRES 
GRADIENT DECREASES. WINDS ARE EXPECTED TO INCREASE OVER THE NE 
PORTION OF TROPICAL N ATLC LATER TODAY THROUGH FRI ALONG WITH 
BUILDING SEAS IN NE TO E SWELLS AS DANIELLE PASSES JUST E OF THE 
AREA. WINDS AND SEAS WILL DECREASE SAT.

WARNINGS...

SW N ATLC...
.NONE.

CARIBBEAN...
.NONE.

.GULF OF MEXICO...
.NONE.

FOR ADDITIONAL INFORMATION PLEASE VISIT 
HTTP://WWW.HURRICANES.GOV/MARINE

$$
FORECASTER DGS