000
AGXX40 KNHC 151718
MIMATS

MARINE WEATHER DISCUSSION   
NWS NATIONAL HURRICANE CENTER MIAMI FL
130 PM EDT THU MAR 15 2012

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

GULF OF MEXICO...
SURFACE HIGH PRES OVER MISSISSIPPI WILL SHIFT E INTO THE ATLC 
FRI WITH A RIDGE EXTENDING W ALONG 31N THROUGH EARLY TUE. SE 
WINDS WILL CONTINUE AT 10-15 KT EXCEPT PULSING TO 15-20 KT OVER 
THE NW WATERS...THROUGH SAT AFTERNOON. THE GRADIENT WILL 
INCREASE SAT EVENING WITH THE SE FLOW BECOMING 15-20 KT ACROSS 
THE AREA AND CONTINUING THROUGH TUE...WITH SEAS GRADUALLY 
BUILDING TO 8 FT OVER THE CENTRAL AND NW WATERS NON NIGHT AND 
TUE.

SOUTHWEST N ATLC S OF 31N W OF 55W...
THE ATLC RIDGE EXTENDING E TO W ALONG 32N-33N WILL SHIFT SE TO 
ALONG 31N-32N ON SUN AND MON...THEN SHIFT N AGAIN ON MON NIGHT 
AND TUE. A N-S ORIENTATED TROUGH WILL DEVELOP OVER THE CENTRAL 
ATLC WATERS BETWEEN 60W-55W ON SAT CAUSING THE LOW LEVEL FLOW TO 
INCREASE OVER THE E CENTRAL WATERS...MAINLY E OF 65W ON SAT 
NIGHT AND SUN...WITH THESE CONDITIONS THEN SPREADING W OF 65W ON 
SUN NIGHT AND MON...WITH THE ENTIRE AREA S OF 27N AND W OF 65W 
EXPERIENCING NE-E 15-20 KT MON NIGHT AND TUE. THE GRADIENT WILL 
ALSO INCREASE ACROSS THE WATERS N OF 27N ON TUE NIGHT AS THE 
RIDGE CONTINUES TO SHIFT NORTHWARD.

CARIBBEAN SEA AND TROPICAL N ATLC...
ATLC RIDGE WILL MAINTAIN EASTERLY 15-20 KT WINDS ACROSS THE 
CARIBBEAN WATERS TO THE E OF 82W...EXCEPT 25-30 KT WITHIN ABOUT 
90 NM OF NW COAST OF COLOMBIA...LITTLE CHANGE EXPECTED THROUGH 
THE WEEKEND WITH THE GRADIENT RELAXING SOME EARLY NEXT WEEK AS 
THE ATLC RIDGE SHIFTS NORTHWARD. GENERALLY NE-E WINDS 10-15 KT 
FORECAST ELSEWHERE WITH THE NE AND E SWELLS SUBSIDING AFTER SAT 
OVER THE TROPICAL WATERS.

WARNINGS...

GULF OF MEXICO...
.NONE.

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

.SW N ATLC...
.NONE.
    
FOR ADDITIONAL INFORMATION PLEASE VISIT
HTTP://WWW.HURRICANES.GOV/MARINE

$$
FORECASTER NELSON