000
AGXX40 KNHC 170546
MIMATS

MARINE WEATHER DISCUSSION  
NWS NATIONAL HURRICANE CENTER MIAMI FL
145 AM EDT MON SEP 17 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...
A SURFACE TROUGH IS LOCATED IN THE WESTERN GULF WATERS. RECENT 
SCATTEROMETER...SHIP...CMAN...AND BUOY DATA DEPICT GENTLE TO 
MODERATE WINDS WITH SEAS 2 TO 3 FT PREVAIL ACROSS THE MAJORITY 
OF THE GULF WATERS. THE TROUGH WILL SHIFT EASTWARD AS A COLD 
FRONT MOVES INTO THE NW GULF WATERS BY EARLY TUE. THE FRONT WILL 
MERGE WITH THE TROUGH AND STALL OVER THE SE PART OF THE GULF AND 
WED AND THU THEN BECOME DIFFUSE BY FRI. WINDS WILL FRESHEN AHEAD 
OF THE FRONT IN THE NE GULF WATERS TUE. NLY WINDS OF 15 TO 20 KT 
ARE EXPECTED BRIEFLY IN THE WAKE OF THE FRONT N OF 28N THROUGH 
WED. OTHERWISE MAINLY GENTLE TO MODERATE WINDS WILL PREVAIL 
ACROSS THE GULF WATERS. 

SOUTHWEST NORTH ATLC S OF 31N W OF 55W...
HIGH PRESSURE HAS SHIFTED INTO THE SW N ATLC WATERS AND HELPED 
PUSH THE SURFACE TROUGH E OF THE FORECAST AREA. SWELLS 
ASSOCIATED WITH TROPICAL STORM NADINE HAVE SUBSIDED ACROSS THE 
FORECAST AREA. LATEST SCATTEROMETER...SHIP...AND BUOY DATA 
DEPICT LIGHT TO GENTLE BREEZE WITH SEAS 4 TO 5 FT E OF THE 
BAHAMAS AND SEAS 1 TO 3 FT W OF THE BAHAMAS. WINDS HAVE VEERED 
TO THE S AND SW OVER THE NW PORTION OF THE REGION...AND WILL 
PREVAIL FROM THAT DIRECTION THROUGH WED AS HIGH PRES MOVES EWD 
ACROSS THE W ATLC. A COLD FRONT WILL MOVE INTO THE FAR NW PART 
OF THE AREA WED WHERE IT IS FORECAST TO STALL. THE BOUNDARY WILL 
THEN LIFT N OF THE AREA FRI. 

CARIBBEAN SEA AND TROPICAL N ATLC W OF 55W...
BASED ON THE LATEST SCATTEROMETER...SHIP AND BUOY DATA...GENTLE 
TO MODERATE TRADE WINDS PREVAIL ACROSS THE CARIBBEAN WATERS AND 
THE TROPICAL N ATLC WATERS...EXCEPT FOR MODERATE TO FRESH WINDS 
ACROSS THE SOUTHERN CENTRAL CARIBBEAN WATERS. A 1011 MB LOW PRES 
AREA THAT DEVELOPED ALONG A TROPICAL WAVE OVER THE TROPICAL N 
ATLC WATERS WILL DISSIPATE TODAY. THE TROPICAL WAVE WILL 
CONTINUE TO MOVE EASTWARD INTO THE E CARIBBEAN TODAY. THE 
TROPICAL WAVE WILL THEN MOVE ACROSS THE CENTRAL CARIBBEAN WATERS 
TUE AND WED AND THE WESTERN CARIBBEAN WATERS THU AND 
FRI...REACHING THE YUCATAN PENINSULA FRI. A SECOND TROPICAL WAVE 
WILL REACH THE TROPICAL N ATLC WATERS THU...AND MOVE INTO THE E 
CARIBBEAN WATERS FRI. 

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 AL