000
AGXX40 KNHC 201836
MIMATS

MARINE WEATHER DISCUSSION 
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
300 PM EST SAT MAR 20 2010

MARINE WEATHER DISCUSSION FOR GULF OF MEXICO...CARIBBEAN SEA AND 
SOUTHWEST NORTH ATLC S OF 31N W OF 55W

GULF OF MEXICO...
A STRONG COLD FRONT IS JUST ENTERING THE FAR NW PORTION OF THE 
GULF REGION. SE TO S WINDS OF 20 TO 25 KT ARE NOTED AHEAD OF 
THE FRONT PER A RECENT ASCAT PASS. STRONG TO GALE FORCE WINDS 
AND RAISING SEAS TO AROUND 14 FT ARE EXPECTED IN THE WAKE OF THE 
FRONT. A GALE WARNING IS IN EFFECT FOR THE NW AND SW ZONES LATE 
THIS AFTERNOON THROUGH SUN MON. WINDS ARE EXPECTED TO DIMINISH 
TO 20 TO 25 KT SUN AFTERNOON AND NEAR OR BELOW 20 KT SUN NIGHT. 
THE FRONT WILL EXTEND FROM SE LOUISIANA TO THE BAY OF CAMPECHE 
TONIGHT AND FROM THE FLORIDA BIG BEND TO YUCATAN PENINSULA SUN 
AND SE OF AREA SUN NIGHT. HIGH PRESSURE WILL SHIFT E ACROSS THE 
NORTHERN GULF MON AND TUE WITH RETURN FLOW INCREASING AGAIN IN 
THE W GULF TUE AND WED.

TROPICAL ATLC AND CARIBBEAN SEA...
A STATIONARY FRONT EXTENDING FROM HAITI TO THE COAST OF PANAMA 
NEAR 09N79W WILL DISSIPATE AND BECOME DIFFUSE TONIGHT. FRESH N 
WINDS ARE STILL BLOWING BETWEEN THE FRONT AND THE COAST OF 
NICARAGUA. FRESH TO STRONG TRADES WILL DOMINATE THE EAST-CENTRAL 
CARIBBEAN DURING THE FORECAST PERIOD. A WINDSAT PASS FROM EARLY 
THIS MORNING SHOWED E TO SE WINDS 20 TO 25 KT OVER THE EASTERN 
CARIBBEAN E OF 68W. A RECENT ASCAT PASS ALSO CONFIRMED THESE 
WIND SPEEDS. ANOTHER COLD FRONT WILL MOVE INTO THE NW CARIBBEAN 
SUN NIGHT AND EXTEND FROM E-CENTRAL CUBA TO THE GULF OF HONDURAS 
MON NIGHT THEN FROM THE WINDWARD PASSAGE TO NEAR THE 
HONDURAS-NICARAGUA BORDER TUE NIGHT AND DISSIPATE WED. NLY WINDS 
OF 20 TO 25 KT ARE EXPECTED BEHIND THE FRONT BUILDING SEAS TO 
AROUND 9 FT. TRADES WILL ALSO INCREASE E OF THE LESSER ANTILLES 
PARTICULARLY ON MON AS HIGH PRES INTENSIFIES OVER THE CENTRAL 
ATLANTIC. 

SW N ATLC W OF 55W... 
A STATIONARY FRONT IS OVER THE SE PORTION OF THE AREA AND 
EXTENDS FROM 22N65W TO HISPANIOLA NEAR 19N71W. A WIDE BAND OF 
CLOUDINESS WITH EMBEDDED SHOWERS IS ASSOCIATED WITH THE FRONT. A 
SWIRL OF LOW CLOUDS ASSOCIATED WITH A WEAK 1015 MB LOW PRES IS 
NOW MOVING INTO THE AREA NEAR 31N68W. THE FRONT WILL BECOME 
DIFFUSE SUN. HIGH PRESSURE WILL SHIFT E ACROSS THE AREA SUN. SLY 
WINDS WILL INCREASE OVER THE NW PORTION OF THE AREA LATE SUN 
INTO MON AHEAD OF THE NEXT APPROACHING COLD FRONT. THE FRONT 
WILL EXTEND FROM 31N74W TO E-CENTRAL CUBA LATE MON THEN FROM 
31N66W TO THE WINDWARD PASSAGE LATE TUE AND ACROSS THE FAR SE 
PORTION OF THE AREA LATE WED.

WARNINGS...
ATLC...
.NONE.
 
CARIBBEAN...
.NONE.

GULF OF MEXICO...
.GMZ080...GALE WARNING LATE THIS AFTERNOON AND TONIGHT...AND   
GALE CONDITIONS EXPECTED EARLY SUN.
.GMZ082...GALE WARNING TONIGHT...AND GALE CONDITIONS EXPECTED 
SUN.

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

$$
FORECASTER GR