000
AGXX40 KNHC 220628
MIMATS

MARINE WEATHER DISCUSSION   
NWS NATIONAL HURRICANE CENTER MIAMI FL
130 AM EST WED FEB 22 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 E-W RIDGE EXTENDS ACROSS THE NORTHERN WATERS WITH SLY RETURN 
FLOW ACROSS THE ENTIRE GULF TODAY AND TONIGHT. THE SLY FLOW WILL 
STRENGTHEN THU IN ADVANCE OF A COLD FRONT THAT WILL MOVE INTO 
THE NW WATERS LATE THU NIGHT PRECEDED BY 20-25 KT SW WINDS 
SHIFTING TO N WITH STRONG CAA INCREASING THE NLY FLOW TO 30 KT W 
OF FRONT BY EARLY FRI. THE NLY FLOW WILL FURTHER INCREASE TO A 
MINIMAL GALE OVER THE SW ZONE BY FRI EVENING. THE GALE ILL 
CONTINUE OVER THE SW WATERS THROUGH SAT AS THE FRONT STALLS FROM 
THE FL STRAITS TO A FRONTAL WAVE AT 22N85W TO THE BAY OF 
CAMPECHE. GUIDANCE...OF COURSE...WEAKENS THE NLY FLOW SW OF THE 
FRONT AND LIFTS THE FRONTAL WAVE N ON SUN WITH E WINDS 20 KT 
ELSEWHERE.    

CARIBBEAN SEA AND TROPICAL N ATLC...
A COLD FRONT IS SLOWING AS IT MOVES INTO THE TROPICAL ATLC 
WATERS ALONG 22N AND SHOULD GRADUALLY WASH OUT THROUGH THU. 
NLY POST-FRONTAL SWELLS WILL DRIVE SEAS TO 12 FT NEAR 22N55W AT 
SUNRISE THU...WITH THIS ROUND OF N SWELLS PROPAGATING S AND 
REACHING S AMERICA ALONG 07N LATE FRI AT ABOUT A 10 FT MAX.
THE ELY TRADES ARE STRENGTHENING IN RESPONSE TO THE POST-FRONTAL
RIDGING N OF THE AREA. LOW LEVEL WINDS WILL BECOME SE OVER THE 
NW CARIBBEAN THU...AND INCREASE THU NIGHT INTO FRI IN ADVANCE OF 
A COLD FRONT THAT WILL APPROACH...BUT NOT REACH...THE YUCATAN 
PASSAGE ON FRI NIGHT. THE TRADES WILL THEN RELAX SOME ACROSS THE 
ENTIRE AREA OVER THE WEEKEND.

SW N ATLC S OF 31N W OF 55W...
A COLD FRONT IS CURRENTLY LOSING IDENTITY FROM 23N55W TO THE 
WINDWARD PASSAGE. LARGE POST-FRONTAL NLY SWELLS WILL PROPAGATE 
FROM NW TO SE THROUGH THE EASTERN WATERS TODAY WITH A RIDGE 
BUILDING SW FROM 31N55W TO SE FL. THE SLY RETURN FLOW WILL 
INCREASE N OF THE RIDGE TONIGHT WITH A WEAK COLD FRONT PASSING 
THROUGH THE NORTHERN PORTION THU BUT ONLY ACCOMPANIED BY A 
SLIGHT SW-WSW 20-25 KT WIND SHIFT. THE SW FLOW WILL RELAX SOME N 
OF A RIDGE EXTENDING E-W ALONG 27N ON THU NIGHT...BUT INCREASE 
AGAIN FRI AHEAD OF THE NEXT STRONGER COLD FRONT WHICH WILL MOVE 
OFF THE GA COAST FRI EVENING...AND PASS THROUGH THE NW AND 
CENTRAL BAHAMAS SAT...THEN WASH OUT OVER THE SE PORTION SUN. 
SE RETURN FLOW QUICKLY SETS UP AGAIN OVER THE NW WATERS SUN 
NIGHT.
   
WARNINGS...

GULF OF MEXICO...
.NONE. GMZ082...GALE CONDITIONS EXPECTED FRI-SAT.

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

.SW N ATLC...
.NONE...GALE WARNING N OF 29N E OF 65W.
    
FOR ADDITIONAL INFORMATION PLEASE VISIT
HTTP://WWW.HURRICANES.GOV/MARINE

$$
FORECASTER NELSON