000
AGXX40 KNHC 141854
MIMATS

MARINE WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
215 PM EST FRI DEC 14 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...
HIGH PRES OVER THE SE UNITED STATES IS PRODUCING A GENTLE TO 
MODERATE ANTICYCLONIC FLOW ACROSS MOST OF THE GULF WATERS WITH 
SEAS GENERALLY UNDER 5 FT. SOUTHERLY RETURN FLOW IS FORECAST TO 
INCREASE IN THE WESTERN GULF LATER TODAY THROUGH SUN AHEAD OF 
THE NEXT COLD FRONT FORECAST TO MOVE ACROSS THE GULF REGION MON 
AND TUE. CURRENTLY...MARINE GUIDANCE SUGGESTS MODERATE TO FRESH 
WINDS IN THE WAKE OF THE FRONT AND BUILDING SEAS TO AROUND 6 FT. 

SW N ATLC S OF 31N W OF 65W...
A COLD FRONT EXTENDING FROM 31N66W TO WESTERN CUBA WILL 
DISSIPATE ACROSS THE FORECAST WATERS TONIGHT AND SAT. THE MOST 
RECENT SCATTEROMETER DATA ALONG WITH SURFACE OBSERVATIONS SHOWED 
N-NE WINDS OF 20-25 KT BEHIND THE FRONT. AN ALTIMETER PASS 
INDICATED SEA HEIGHTS OF UP TO 12 FT JUST N OF THE NW BAHAMAS. 
HIGH PRES WILL BUILD IN THE WAKE OF THE FRONT PRODUCING MAINLY A 
MODERATE BREEZE. SOUTHERLY RETURN FLOW WILL INCREASE ALONG THE
FLORIDA E COAST LATE SUN AND MON AHEAD OF A STRONG COLD FRONT 
FORECAST TO MOVE OFF THE COAST OF NORTHERN FLORIDA TUE. GLOBAL 
MODELS INDICATE FRESH TO STRONG WINDS ON EITHER SIDE OF THE 
FRONT. IT IS NOT OUT OF QUESTION THE POSSIBILITY OF GALE FORCE 
WINDS OVER THE FAR NE WATERS TUE NIGHT AND WED. SEAS WILL LIKELY 
RANGE FROM 12-15 FT.  

CARIBBEAN SEA AND TROPICAL N ATLC S OF 22N W OF 55W...
WINDS ARE ALREADY DIMINISHING ACROSS THE TROPICAL N ATLC AND THE 
EAST-CENTRAL CARIBBEAN. THE LATEST ASCAT PASS PROVIDED 
OBSERVATIONS OF 20 TO 25 KT NEAR THE COAST OF COLOMBIA...MAINLY 
FROM 10N TO 14N BETWEEN 74W AND 78W. A WEAKENING STATIONARY 
FRONT EXTENDS FROM WESTERN CUBA TO NEAR TO THE COAST OF BELIZE 
AND WILL DISSIPATE LATER TODAY. SOME SHIPS MOVING ACROSS THE 
YUCATAN CHANNEL INTO THE NW CARIBBEAN REPORTED WINDS OF 20 TO 25 
KT THIS MORNING. A SURFACE LOW PRES 1008 MB CURRENTLY LOCATED 
NEAR 20N52W IS FORECAST TO MOVE INTO ZONE AMZ027 IN ABOUT 24 
HOURS. WINDS OF 20-25 KT ARE NOTED PER SCATTEROMETER DATA WITHIN 
360 NM NE SEMICIRCLE OF LOW CENTER. PRES GRADIENT BETWEEN THE 
LOW PRES AND HIGH PRES TO THE NE IS ALSO GENERATING AN AREA OF 
E-SE WINDS IN THE 20-25 KT RANGE FROM 13N TO 25N BETWEEN 40W AND 
47W. THE GFS GLOBAL MODEL HAS THE LOW PRES MOVING INTO THE 
TROPICAL N ATLC AS A MUCH WEAKER SYSTEM BY SAT. 

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 GR