000
AGXX40 KNHC 061800
MIMATS

MARINE WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
100 PM EST THU DEC 6 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...
WEAK LOW PRES CENTERED S OF LOUISIANA NEAR 28N91W WILL REMAIN 
NEARLY STATIONARY TONIGHT THEN DISSIPATE FRI. A TROUGH EXTENDING 
SE FROM THE LOW TO THE WESTERN TIP OF CUBA WILL DRIFT NW AND 
WEAKEN THROUGH FRI NIGHT. HIGH PRES WILL BUILD NE OF THE REGION 
THROUGH THE WEEKEND. A STRONG COLD FRONT WILL REACH THE TEXAS 
COAST EARLY MON MORNING AND PUSH SOUTHWARD INTO THE WEST-CENTRAL 
GULF THROUGH TUE...WITH STRONG TO NEAR-GALE N WINDS ASSOCIATED 
WITH STRONG HIGH PRES EXPECTED W OF THE FRONTAL BOUNDARY. MODEL 
GUIDANCE IS IN GOOD AGREEMENT WITH THIS SCENARIO AND A BLEND OF 
GFS AND ECMWF MODELS WERE USED TO PREPARE THE FORECAST GRIDS.

CARIBBEAN SEA AND TROPICAL N ATLC S OF 19N W OF 55W...
WINDS AND SEAS ARE DIMINISHING ACROSS THE REGION AS HIGH PRES N 
OF THE AREA SHIFTS FURTHER E AND WEAKENS AHEAD OF A FRONTAL 
BOUNDARY PUSHING OFF THE SE COAST OF THE U.S. GENTLE TO MODERATE 
WINDS AND SUBSIDING SEAS CAN BE EXPECTED TO CONTINUE ACROSS MOST 
OF THE REGION THROUGH FRI. WINDS AND SEA HEIGHTS WILL INCREASE 
IN THE CENTRAL CARIBBEAN OVER THE WEEKEND AS STRONG HIGH PRES 
BUILDS OVER THE WEST-CENTRAL ATLC. FRESH TO STRONG E WINDS ARE 
EXPECTED THE CENTRAL CARIBBEAN SAT NIGHT THROUGH MON...WITH 
MODERATE TO FRESH E-NE TRADE WINDS IN THE TROPICAL N ATLC AND 
EASTERN CARIBBEAN LIKELY SAT THROUGH MON. WINDS AND SEAS WILL 
INCREASE N OF THE LESSER ANTILLES TUE AS THE HIGH SHIFTS FURTHER 
E. FORECAST GRIDS BASED PRIMARILY ON GFS MODEL FORECAST GUIDANCE.

SW N ATLC N OF 19N W OF 55W...
HIGH PRES CENTERED NEAR 30N68W WILL WEAKEN AND SHIFT EASTWARD 
THROUGH FRI AS AS A WEAK COLD FRONT BRUSHES PAST THE NORTHERN 
WATERS. A TROUGH ALONG 78W THROUGH THE BAHAMAS WILL AMPLIFY AS 
IT DRIFTS W INTO FLORIDA THROUGH SAT. THE TROUGH WILL TRIGGER 
WIDESPREAD SHOWERS ACROSS THE NORTHERN BAHAMAS AND FLORIDA E 
COAST WATERS THROUGH FRI. STRONG HIGH PRES WILL BUILD NE OF THE 
AREA TONIGHT THROUGH SUN. EASTERLY TRADE WINDS WILL INCREASE S 
OF 28N FRI AND SAT. THE HIGH WILL SHIFT FURTHER E INTO THE 
CENTRAL ATLC SUN...ALLOWING WINDS TO BECOME E-SE ACROSS MOST OF 
THE AREA THROUGH TUE. SOUTHERLY WINDS WILL INCREASE W OF 75W SUN 
NIGHT AND MON AS A COLD FRONT APPROACHES NORTHERN FLORIDA. THE 
FRONT IS EXPECTED TO REACH THE COAST OF N FLORIDA TUE. GFS AND 
ECMWF MODEL GUIDANCE ARE IN GOOD AGREEMENT...AND A BLEND OF GFS 
AND ECMWF MODELS WERE USED FOR THE MARINE FORECAST.

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 MUNDELL