000
AGXX40 KNHC 211827
MIMATS

MARINE WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
245 PM EDT TUE SEP 21 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 SW GULF WHILE RIDGING REMAINS 
JUST N OF THE WATERS THROUGH THE PERIOD. MODERATE TO FRESH TRADE 
WIND FLOW AND SEAS OF 3 TO 6 FT WILL PREVAIL ACROSS THE MAJORITY 
OF THE FORECAST AREA THROUGH THE PERIOD. DIURNALLY DRIVEN N-NE 
15-20 KT WINDS WILL OCCUR EACH EVENING ALONG THE YUCATAN COAST. 
A TROPICAL WAVE CURRENTLY IN THE FAR E CARIBBEAN WILL APPROACH 
THE YUCATAN CHANNEL AND PENINSULA SAT.

SW N ATLC...
LARGE SWELLS GENERATED FROM LONG DEPARTED AND DISTANT HURRICANE 
IGOR WILL CONTINUE TO SUBSIDE THROUGH WED NIGHT. RIDGING WILL 
BUILD JUST N OF THE AREA THROUGH THE PERIOD WITH FRESH TO STRONG 
TRADE WIND FLOW WILL DEVELOP ACROSS THE WATERS WED THROUGH FRI 
DIMINISHING SLIGHTLY SAT AS THE RIDGE WEAKENS. THE STRONGEST 
TRADES WILL BE OVER THE SOUTHERN PORTION.

CARIBBEAN SEA AND TROPICAL N ATLC...
A TROPICAL WAVE HAS MOVED INTO THE E CARIBBEAN. THE TROPICAL 
WAVE WILL MOVE WESTWARD ACROSS THE CARIBBEAN THROUGH THE 
WEEK...APPROACHING THE YUCATAN PENINSULA SAT. A TIGHT PRES 
GRADIENT BETWEEN THIS TROPICAL WAVE AND ATLC RIDGING TO THE N OF 
THE AREA WILL RESULT IN TRADES OF 20-25 KT IN THE VICINITY OF 
THE WAVE WITH SEAS BUILDING TO AROUND 13 FT BY THE END OF THE 
WEEK. 

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