000
AGXX40 KNHC 230609
MIMATS

MARINE WEATHER DISCUSSION    
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
200 AM EDT MON AUG 23 2010

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

VERY WEAK PRES GRADIENT ACROSS THE GULF OF MEXICO WITH MOSTLY 
LIGHT WINDS ACROSS THE AREA. ELY WINDS TO 15 KT IN THE BAY OF 
CAMPECHE WITH SEAS TO 5 FT TODAY WILL DECREASE BY THIS EVENING.
TROUGH MOVES INTO THE MIDDLE AND EASTERN GULF LATER TOFAY. SW 
WINDS INCREASE TO 15 KT N OF 25N E OF THE TROUGH TONIGHT THROUGH 
TUE NIGHT THEN DECREASE WED AS THE TROUGH PULLS NE. OTHERWISE 
MOSTLY LIGHT WINDS ACROSS THE AREA THROUGH THU...THEN SE WINDS 
INCREASE TO 15 KT OVER THE SW GULF AS LOWER PRES IS FORECAST TO 
DEVELOP IN THE BAY OF CAMPECHE TIGHTENING THE GRADIENT SOME ON 
FRI.

ATLC TROPICAL WAVE CURRENTLY ALONG THE SE BAHAMAS WILL MOVE TO 
THE CENTRAL BAHAMAS LATER TODAY AND WEAKEN ACROSS THE STRAITS
OF FLORIDA TUE. OTHERWISE ATLC RIDGE IS ALONG 27N...THIS 
COMBINED WITH LOW PRES APPROACHING THE SE U.S. WILL TIGHTEN THE 
PRES GRADIENT TO PRODUCE SW WINDS TO 20 KT ACROSS THE THE FAR N 
PORTION OF THE AREA N OF AROUND 29N/30N THROUGH WED THEN THE 
WINDS DECREASE TO BELOW 20 KT AS THE LOW AND ASSOCIATED TROUGH 
MOVE TO THE NE. WEAK PRES PATTERN ACROSS THE AREA THU AND FRI
HOWEVER ELY SWELLS WILL BUILD OVER THE FAR E PORTION OF THE AREA
FRI AS DANIELLE PASS TO THE E OF THE AREA AS A HURRICANE.

E-SE WINDS 15-20 KT ACROSS THE NW CARIBBEAN S OF 18N AND W OF 
85W. THESE WINDS WILL CONTINUE THROUGH EARLY WED THEN DECREASE 
BY WED AFTERNOON. ELY TRADES OF 15-20 KT OVER MUCH OF THE 
CENTRAL CARIBBEAN WILL CONTINUE THROUGH WED AFTERNOON AS THE 
PRES GRADIENT INCREASES DUE TO BUILDING ATLC RIDGE. THE TRADES 
DECREASE THU AND FRI AS THE ATLC RIDGE WEAKENS AND WHAT IS 
EXPECTED TO BE HURRICANE DANIELLE MOVES TO THE NE OF THE AREA. 
WINDS ARE EXPECTED TO INCREASE OVER THE NE PORTION OF TROPICAL N 
ATLC WED THROUGH FRI ALONG WITH BUILDING SEAS IN NE SWELLS AS 
DANIELLE PASSES TO THE JUST E OF THE AREA.

WARNINGS...

SW N ATLC...
.NONE.

CARIBBEAN...
.NONE.

.GULF OF MEXICO...
.NONE.

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

$$
FORECASTER DGS