000
AGXX40 KNHC 061923
MIMATS

MARINE WEATHER DISCUSSION  
NWS NATIONAL HURRICANE CENTER MIAMI FL
245 PM EST SAT MAR 05 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...
WINDS HAVE DIMINISHED BELOW GALE FORCE BEHIND THE COLD FRONT 
THAT IS CURRENTLY MOVING ACROSS THE GULF OF MEXICO. SURFACE DATA 
AND THE MOST RECENT WINDSAT PASS SHOWED NW TO N WINDS OF 25 TO 
30 KT S OF 25N AND W OF THE FRONT THAT STRETCHES FROM N FLORIDA 
TO 24N90W TO THE W BAY OF CAMPECHE NEAR 19N95W. SHOWERS WITH 
EMBEDDED TSTMS CAN BE FOUND AHEAD OF THE FRONT. WINDS AND SEAS 
WILL BE HIGHER NEAR THE TSTMS. THE FRONT WILL MOVE SE OF AREA 
TONIGHT. HIGH PRES WILL BUILD IN THE WAKE OF THE FRONT WITH A 
RIDGE EXTENDING ACROSS THE EASTERN U.S. INTO THE GULF REGION. 
SLY RETURN FLOW IS FORECAST TO INCREASE TO 15-20 KT ACROSS THE 
NW GULF TUE. THE FRESH TO STRONG SLY WINDS SPREAD ACROSS MUCH 
OF THE GULF ON WED AS ANOTHER COLD FRONT APPROACHES THE TEXAS 
COAST. THE SECOND COLD FRONT WILL EXTEND FROM N FLORIDA TO THE 
BAY OF CAMPECHE LATE THU WITH NLY WINDS INCREASING TO 20-25 KT W 
OF THE FRONT. MARINE GUIDANCE ALSO SHOWS BUILDING SEAS OF UP TO 
9 FT BEHIND THE FRONT.

SW N ATLC...
A RIDGE DOMINATES MOST OF THE REGION WITH FRESH TO STRONG NE 
WINDS AND ROUGH SEAS OVER THE NE PORTION...PARTICULARLY N OF 27N 
E OF 72W. BUOY 41047 IS REPORTING COMBINED SEA HEIGHTS OF 
AROUND 9 FT. THE RIDGE WILL RETREAT EWD AS A COLD FRONT MOVES 
OFF SE COAST LATE THIS AFTERNOON. THE COLD FRONT WILL EXTEND 
FROM 31N75W TO THE STRAITS OF FLORIDA MON MORNING...FROM 31N67W 
TO THE NW BAHAMAS TUE MORNING AND FROM 29N65W TO 24N70W WED 
MORNING AND DISSIPATE LATE WED THROUGH THU. WINDS AND SEAS WILL 
GRADUALLY DIMINISH E OF THE BAHAMAS AS THE COLD FRONT MOVES SE 
ACROSS THE AREA. SLY WINDS ONCE AGAIN INCREASE TO 20-25 KT 
ACROSS THE NW PORTION OF THE AREA AHEAD OF THE NEXT COLD FRONT 
FORECAST TO MOVE OFF THE SE CONUS BY LATE THU.

A WEAK LOW IS DEVELOPING ACROSS THE CENTRAL ATLC NEAR 25N57W. A 
1015 MB LOW IS ANALYZED ON THE 18Z MAP WITH A TROUGH EXTENDING 
TO THE N TO NEAR 31N52W AND ANOTHER TROUGH TO THE S TO NEAR 
21N58W. THE 1354 ASCAT PASS SHOWED WINDS OF 20 KT WITHIN 120 NM 
N SEMICIRCLE OF LOW PRES. A WELL DEFINED SWIRL OF LOW CLOUDS IS 
NOTED ON VISIBLE SATELLITE PICTURES. THIS SYSTEM WILL REMAIN 
NEARLY STATIONARY OVER THE NEXT 24-36 HOURS.  

CARIBBEAN AND TROPICAL N ATLC W OF 55W...
HIGH PRES N OF THE AREA WILL MAINTAIN MODERATE TO FRESH TRADES 
ACROSS MOST OF BASIN THROUGH THE FORECAST PERIOD. PRES GRADIENT 
BETWEEN HIGH PRES N OF AREA AND THE COLOMBIAN/PANAMANIAN LOW 
WILL PRODUCE FRESH TO STRONG WINDS NEAR THE COLOMBIAN COAST 
THROUGH WED. SHIP PHIW NEAR 12N75W REPORTED NE WINDS OF 25 KT 
AND SEAS TO 6 FT THIS MORNING.

WARNINGS..

ATLC...
.NONE.

CARIBBEAN...
.NONE.

GULF OF MEXICO...
.NONE.

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

$$
FORECASTER GR