000
AGXX40 KNHC 310811
MIMATS

MARINE WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
345 AM EDT SAT OCT 31 2009

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

GULF OF MEXICO...
COLD FRONT IN CENTRAL GULF OF MEXICO HAS GALE FORCE NW WINDS W 
OF FRONTAL BOUNDARY AND STRONG SE-S BREEZE E OF FRONT AS IT 
SLOWLY MOVES E.  FRONT AT SE EDGE OF GULF BY LATE TONIGHT WITH  
MODELS GUIDANCE SOLUTIONS DIMINISHING WINDS TO STRONG NE BREEZE 
BY MON THEN TO FRESH NE BREEZE ACROSS MOST GULF MON NIGHT BEFORE 
REINFORCING SURGE INCREASES NE STRONG WINDS ACROSS GULF W OF 87W 
AGAIN TUE. 

SW N ATLC S OF 31N AND W OF 55W...
COLD FRONT EXTENDING FROM 1002 MB LOW PRES AT 31N45W TO 20N55W 
MOVE SE ACROSS CENTRAL ATLC WITH GALE FORCE NE WINDS N OF FRONT 
TODAY.  GALE FORCE WINDS DO NOT ENTER FORECAST WATERS BUT 
CERTAINLY MAINTAIN GUSTY CONDITIONS E OF 65W.  SURFACE LOW PRES 
MOVE SW TO 28N47W SAT.  WIND INCREASE ON NW QUADRANT OF LOW PRES 
AND GALE CONDITIONS EXPECTED TO SPREAD N OF AREA.  IN ADDITION 
TO GALE CONDITIONS...LARGE LONG PERIOD SWELLS SPREAD S TO REACH 
TROPICAL ATLC ZONE WITH SEAS OF TO 10 FT TONIGHT.  SWELL TRAIN 
PROPAGATE SW AND REACH AS FAR S AS ATLC PASSAGES OF NE CARIBBEAN 
LATE SUN.  GALE CONDITIONS ABATE SUN AS LOW PRES MOVE NW THROUGH 
MON. 

CARIBBEAN AND TROPICAL N ATLANTIC W OF 55W...
FRESH TRADES ALONG MOST OF CARIBBEAN EXPECTED TO DIMINISH AS 
PRES GRADIENT BETWEEN ATLC HIGH PRES AND LOW PRES OVER COLOMBIA 
RELAXES.  GENTLE E BREEZE AND SLIGHT SEAS REMAIN THROUGH EARLY 
NEXT WEEK.  LARGE LONG PERIOD SWELLS FILTER THROUGH ATLC 
PASSAGES TODAY AND MON THEN SUBSIDE LATE TUE. 

WARNINGS...

ATLC...
.NONE.

CARIBBEAN...
.NONE.

GULF OF MEXICO...
.GALE CONDITIONS TONIGHT S OF 21N W OF 94W.

$$
FORECASTER WALLY BARNES