000
AGXX40 KNHC 210550
MIMATS

MARINE WEATHER DISCUSSION  
NWS NATIONAL HURRICANE CENTER MIAMI FL
200 AM EDT MON MAR 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...
RIDGE WILL EXTEND FROM NW FLORIDA TO NE TEXAS. HIGH PRES WILL 
DEVELOP OVER THE NE GULF TUE AFTERNOON. THE PRES GRADIENT 
BETWEEN THE HIGH AND LOWER PRES OVER THE SOUTHERN PLAINS 
TIGHTENS LEADING TO INCREASING SLY WINDS OVER THE NW GULF LATE 
TUE INTO WED THEN DECREASE THUS AS THE HIGH DISSIPATES. EASTERLY 
WINDS WILL INCREASE TO 20 KT S OF THE RIDGE OVER THE FL STRAITS 
AND SE GULF TODAY AND TUE. THE GRADIENT WILL RELAX AFTER WED.

SW N ATLC W OF 55W...
DRY COLD FRONT FROM 25N65W TO THE NORTHERN BAHAMAS WILL MOVE 
RAPIDLY E OF THE AREA TODAY WITH HIGH PRES BUILDING IN THE WAKE 
OF THE FRONT WITH NE WINDS AT 20-25 KT ACROSS MUCH OF THE AREA. 
SEAS WILL BUILD TO 12 FT AND UP TO 13 TO 16 FT OVER WATERS SE OF 
BERMUDA TODAY. THE GRADIENT WILL WEAKEN OVER THE NW PORTION OF 
THE AREA LATER TODAY AS A RIDGE BUILDS ALONG 28N BY TUE BECOMING 
ORIENTATED E TO W ALONG 25N BY THU. ANOTHER COLD FRONT WILL PASS 
THROUGH THE NE PORTION OF THE AREA TUE NIGHT AND WED AND A THIRD 
FRONT FOLLOWS ON FRI.
 
CARIBBEAN SEA AND TROPICAL N ATLC W OF 55W...
TIGHT PRES GRADIENT BETWEEN HIGH PRES TO THE N OF THE AREA AND 
LOW PRES OVER COLOMBIA IS PRODUCING MODERATE TO STRONG NE TRADES 
ACROSS MUCH OF THE CARIBBEAN...WITH THE STRONGEST WINDS ALONG 
COAST OF COLOMBIA. THE GRADIENT WILL RELAX TUE NIGHT THROUGH 
THU. A COLD FRONT WILL MOVE RAPIDLY INTO THE NW PORTION OF THE 
TROPICAL ATLC ZONE LATER TODAY THEN DISSIPATES AS STRONG HIGH 
PRES BUILDS IN ITS WAKE RESULTING IN NE 20 KT WINDS OVER THE N 
PORTION OF THE AREA. THE HIGH WEAKENS AND THE PRES GRADIENT 
RELAXES THU WITH DECREASING WINDS.

WARNINGS..

ATLC...
.NONE.

CARIBBEAN...
.NONE.

GULF OF MEXICO...
.NONE.

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

$$
FORECASTER DGS