000
AGXX40 KNHC 200606
MIMATS

MARINE WEATHER DISCUSSION  
NWS NATIONAL HURRICANE CENTER MIAMI FL
200 AM EDT SAT OCT 20 2012

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...
COLD FRONT EXTENDS FROM SW FLORIDA TO TAMPICO MEXICO. THE 
WESTERN PART OF THE FRONT WILL DISSIPATE WHILE THE EASTERN 
PORTION MOVES OUT OF THE AREA LATER TODAY. HIGH PRES RIDGE 
BUILDS BEHIND THE FRONT WITH SLY RETURN FLOW INCREASING TO 15-20 
KT ACROSS THE NW GULF ON SUN AND MON. THE HIGH MOVES E AND THE 
PRES GRADIENT WEAKENS OVER THE NW GULF AND WINDS DECREASE TO 
10-15 KT TUE. HOWEVER AS THE HIGH MOVES E THE WINDS PICK UP TO 
15-20 KT WITH SEAS TO 6 FT IN THE STRAITS OF FLORIDA TUE.

SW N ATLC S OF 31N W OF 65W...
COLD FRONT FROM 31N77W TO CENTRAL FLORIDA. THE FRONT WILL EXTEND 
FROM 31N72W TO THE NW BAHAMAS THIS EVENING AND FROM 31N67W TO 
CENTRAL BAHAMAS SUN THEN WEAKEN AND MOVE E OF THE AREA MON 
NIGHT. HIGH PRES BUILDS BEHIND THE FRONT MON AND TUE. WINDS 
REMAIN IN THE 10-15 KT RANGE THROUGH THE WEEKEND..THEN NE WINDS 
INCREASE TO 15-20 KT ACROSS THE NW PORTION OF THE AREA MON AS 
HIGH PRES MOVES INTO THE EASTERN U.S.  ELY WINDS 15-20 KT ACROSS 
MUCH OF THE AREA TUE AND WED AS THE PRES GRADIENT TIGHTENS 
BETWEEN HIGH PRES TO THE N OF THE AREA AND LOWER PRES IN THE 
CARIBBEAN.

CARIBBEAN SEA AND TROPICAL N ATLC W OF 55W...
TROPICAL WAVE ALONG 70W WILL MOVE W THROUGH THE CENTRAL 
CARIBBEAN OVER THE WEEKEND AND MERGE WITH A BROAD LOW PRES IN 
THE SW CARIBBEAN EARLY NEXT WEEK. ELY WINDS INCREASE TO 15-20 KT 
ACROSS MUCH OF THE AREA AS THE LOW STRENGTHENS SOME TOWARD THE 
END OF THE FORECAST PERIOD.

NOTE...GRIDDED MARINE FORECAST IS AVAILABLE AT 
WWW.NHC.NOAA.GOV/TAFB/GRIDDED_MARINE

GULF OF MEXICO...
.NONE.

CARIBBEAN SEA AND TROPICAL N ATLC...
.NONE.

SW N ATLANTIC...
.NONE.
  
FOR ADDITIONAL INFORMATION PLEASE VISIT
WWW.HURRICANES.GOV/MARINE

$$
FORECASTER DGS