000
AGXX40 KNHC 210727
MIMATS

MARINE WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
230 AM EST MON FEB 21 2011

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 RIDGE EXTENDS ACROSS THE NORTHERN GULF WITH SE TO S 
WINDS OVER MOST OF THE GULF. BUOY AND OIL PLATFORM OBSERVATIONS 
IN THE NW GULF INDICATE SURFACE WINDS HAVE INTENSIFIED TO AROUND 
20 KT N OF 25N W OF 92W. HIGH PRES IS EXPECTED TO SLOWLY SHIFT SE
THEN E IN THE WESTERN ATLC...MAINTAINING A RIDGE ACROSS THE GULF 
REGION THROUGH TONIGHT. A WEAK FRONT WILL REACH THE TEXAS COAST 
TUE...CAUSING A WIND SHIFT AND LIGHT WINDS ALONG THE FRONT...BUT
NO SIGNIFICANT WEATHER OR CHANGES TO SEA STATE ARE EXPECTED. THE 
FRONT WILL WASH OUT ON WED AS HIGH PRES BUILDS. THE RIDGE MOVES 
E THU AND SLY RETURN FLOW WILL ONCE AGAIN INCREASE OVER THE NW 
GULF. ANOTHER WEAK COLD FRONT WILL REACH LOUISIANA FRI AND BRUSH 
PAST THE NORTHERN GULF COAST THROUGH SAT.

SW N ATLC W OF 65W...
STRONG TO NEAR-GALE WINDS ASSOCIATED WITH A COLD FRONT E OF THE 
AREA IS GENERATING LARGE N SWELL TO 18 FT IN EASTERN PORTION OF 
THE SW N ATLC. 1022 MB HIGH PRES NEAR 30N75W WILL SHIFT SE THEN 
E ACROSS THE AREA THROUGH TUE. HIGH PRES RIDGE BECOMES ELONGATED 
ALONG 23N TUE NIGHT AS THE TAIL END OF A BACKDOOR COLD FRONT 
PUSHES INTO THE NORTHERN PART OF THE ZONE. FRONT WILL CAUSE SW 
WINDS TO INCREASE TO 20-25 KT...THEN SHIFT N AND DIMINISH TUE 
NIGHT AND WED. MOST OF THE HIGH WINDS AND LARGE SEAS WILL BRUSH 
PAST THE NE PART OF THE FORECAST AREA...AND THE GREATEST IMPACT 
BEING E OF 65W AND N OF 30N. HIGH PRES WILL BUILD N OF THE AREA 
THU WITH SW WINDS INCREASING AGAIN FRI AHEAD OF ANOTHER PASSING 
FRONT.

CARIBBEAN AND TROPICAL ATLC...
HIGHEST WINDS OBSERVED ON ASCAT ARE THROUGH ATLC PASSAGES AND 
NEAR THE COAST OF COLOMBIA...WITH 25 KT WINDS FUNNELING THROUGH 
THE WINDWARD PASSAGE AND 20 KT WINDS NEAR COLOMBIA. HIGH PRES N 
OF THE AREA WILL SHIFT SE TODAY...AND INCREASE TRADE WINDS ACROSS
MOST OF THE CARIBBEAN. WIDESPREAD 20-25 KT WINDS ARE EXPECTED S 
OF 17N E OF 80W THROUGH WED. WINDS MAY APPROACH 30 KT TUE NIGHT 
AND WED NEAR THE COAST OF COLOMBIA. SEAS WILL BUILD TO AROUND 
11-12 FT IN THE SW CARIBBEAN TUE THROUGH WED AS A RESULT. HIGH 
PRES MOVES E LATE WED...ALLOWING THE PRES GRADIENT TO WEAKEN 
OVER THE S CENTRAL CARIBBEAN WITH WINDS DIMINISHING. LARGE NLY 
SWELL CONTINUING OVER MUCH OF THE TROPICAL N ATLC WILL SUBSIDE 
LATER IN THE WEEK.

WARNINGS..

ATLC...
.NONE.

CARIBBEAN...
.NONE.

GULF OF MEXICO...
.NONE.

FOR ADDITIONAL INFORMATION PLEASE VISIT 
HTTP://WWW.HURRICANES.GOV/MARINE

$$
FORECASTER MUNDELL