000
AGXX40 KNHC 061811
MIMATS

MARINE WEATHER DISCUSSION  
NWS NATIONAL HURRICANE CENTER MIAMI FL
200 PM EDT WED APR 6 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...
SATELLITE IMAGERY SHOWS A STATIONARY FRONT IN THE SOUTHERN GULF 
WITH A SMALL CLUSTER OF MODERATE CONVECTION CENTERED NEAR 24N87W.
1024 MB HIGH PRES OVER GEORGIA EXTENDS A RIDGE SW TO NEAR 27N94W
IN THE NORTHERN GULF. SCATTEROMETER PASS 12 HOURS AGO SHOWED AREA
OF 20 KT WINDS SHRINKING CONSIDERABLY NEAR THE FRONTAL BOUNDARY. 
BASED ON A FEW SURFACE OBS...MODEL GUIDANCE AND DOWNWARD TREND IN
WIND SPEED...EXPECT NEARLY ALL OF THE GULF TO BE LESS THAN 20 KT
WITH SEAS BELOW 8 FT BY THIS AFTERNOON. WEAK HIGH PRES ALONG THE 
SE LOUISIANA AND S MISSISSIPPI COASTS WILL SLIDE E-NE NEXT 24 HRS
AND RETURN FLOW WILL SET UP QUICKLY OVER THE REGION...REACHING 
20 KT ACROSS W PORTIONS BY THU MORNING WITH THIS PATTERN HOLDING 
THROUGH SUN. MODELS BRING NEXT FRONT INTO NW GULF SUN NIGHT. 

CARIBBEAN SEA AND TROPICAL N ATLC...
1030 MB HIGH ACROSS THE W CENTRAL ATLC E OF BERMUDA WILL SHIFT 
GRADUALLY EWD AND INDUCE INCREASED PRES GRADIENT S OF THE  RIDGE 
AND EXPAND FRESH NE TO E TRADES OVER THE TROPICAL N ATLC WATERS. 
FRESH TRADES CONTINUE ACROSS THE SRN CARIB E OF 79W AND IN THE 
GULF OF HONDURAS. AS FRONT PROGRESSES E ACROSS W ATLC AND HIGH 
SHIFTS NE... GRADIENT WILL BEGIN TO RELAX TONIGHT ACROSS THE 
BASIN AND LEAVE FRESH TRADES CONFINED TO S PORTIONS. HIGH BEHIND 
FRONT WILL BECOME STATIONARY ACROSS THE W ATLC THU THROUGH SAT 
AND SPREAD FRESH TRADES ACROSS MUCH OF THE CARIB...AS WELL AS IN 
THE GULF OF HONDURAS. GRADIENT DOES NOT APPEAR TO BE STRONG 
ENOUGH TO PRODUCE 30 KT WINDS OFF THE COAST OF COLOMBIA. 

SOUTHWEST N ATLC W OF 55W...
COLD FRONT CONTINUES TO MOVE FARTHER E OF FLORIDA. FRONT REACHES 
FROM 31N68W TO N BAHAMAS...AND IS EXPECTED TO REACH FROM 28N65W 
THROUGH CENTRAL BAHAMAS INTO STRAITS OF FLORIDA TONIGHT THEN 
BECOME STATIONARY AND WEAKEN ACROSS THE CENTRAL BAHAMAS THU 
BEFORE DISSIPATING FRI. HIGH PRES WILL BUILD BEHIND BOUNDARY 
WITH WINDS QUICKLY VEERING NE TO E TODAY WITH 15-20 KT EXPECTED 
WITHIN A BAND ABOUT 60-90 N OF BOUNDARY E OF BAHAMAS. LIGHT TO 
MODERATE ANTICYCLONIC FLOW WILL THEN PREVAIL THROUGH SAT MORNING 
AS HIGH PRES RESIDES ACROSS THE AREA YIELDING SE TO S WINDS 15 
KT AND LESS W OF 75W...AND MODERATE EASTERLIES S OF 24N. 

WARNINGS..

ATLC...
.NONE.

CARIBBEAN...
.NONE.

GULF OF MEXICO...
.NONE.

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

$$
FORECASTER MUNDELL