000
AGXX40 KNHC 201832
MIMATS

MARINE WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
245 PM EDT MON SEP 20 2010

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

GULF OF MEXICO...
A TROUGH WILL LINGER IN THE FAR W GULF WHILE RIDGING REMAINS 
JUST N OF THE WATERS THROUGH THE PERIOD. MODERATE TO FRESH 
TRADES AND SEAS OF 3 TO 6 FT WILL PREVAIL ACROSS THE MAJORITY OF 
THE FORECAST AREA THROUGH THE PERIOD. EXPECT GUSTS TO 25 KT AND 
HIGHER SEAS IN THE STRAITS OF FLORIDA. ALSO DIURNALLY DRIVEN 
N-NE 20 KT WINDS WILL OCCUR EACH EVENING ALONG THE YUCATAN COAST.

SW N ATLC...
HURRICANE IGOR IS NOW WELL N OF THE AREA. THE TROPICAL STORM 
WARNING HAS BEEN DISCONTINUED FOR THE FAR NE PART OF THE AREA. 
LARGE AND DANGEROUS SWELLS GENERATED ON THE WEST SIDE OF IGOR 
WILL CONTINUE TO EFFECT THE SE U.S. COAST AND THE BAHAMAS WITH A 
HIGH RISK OF RIP CURRENTS THROUGH THE WEEK. HIGH PRESSURE WILL 
BUILD IN THE WAKE OF HURRICANE IGOR...CENTERED JUST N OF THE 
AREA WITH FRESH TO STRONG EASTERLY TRADES ACROSS THE WATERS WED 
THROUGH FRI.

CARIBBEAN SEA AND TROPICAL N ATLC...
A SURFACE TROUGH OVER THE TROPICAL N ATLC WILL MOVE WESTWARD 
ACROSS THE TROPICAL N ATLC WATERS THROUGH TUE. A LOCALLY TIGHT 
PRESSURE GRADIENT BETWEEN THIS TROUGH AND THE RIDGE TO THE NORTH 
WILL RESULT IN FRESH TRADE WIND FLOW N OF THE TROUGH. 

THE TROUGH WILL MOVE INTO THE CARIBBEAN WATERS WED AND MOVE 
WESTWARD TO THE WESTERN CARIBBEAN THROUGH FRI. A TIGHT PRESSURE 
GRADIENT BETWEEN THIS TROUGH AND THE RIDGE TO THE NORTH WILL 
RESULT IN FRESH TO STRONG EASTERLY TRADES SPREADING FROM E TO W 
ACROSS THE BASIN THROUGH THE PERIOD.

WARNINGS...

SW N ATLC...
.NONE.

CARIBBEAN...
.NONE.

TROPICAL N ATLC...
.NONE.
  
GULF OF MEXICO...
.NONE.

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

$$
FORECASTER AL