000
AGXX40 KNHC 301751
MIMATS

MARINE WEATHER DISCUSSION 
NWS NATIONAL HURRICANE CENTER MIAMI FL
200 PM EDT SAT APR 30 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...
E TO SE RETURN FLOW HAS BECOME ESTABLISHED ACROSS THE WESTERN 
GULF OF MEXICO. SEAS ARE GENERALLY 3-5 FT ACROSS THE GULF. HIGH 
PRES WILL SLOWLY SHIFT E ALONG 30N ALLOWING PROLONGED PERIOD OF 
E-SE WINDS  OVER THE REGION WITH SEAS BUILDING TO 7 FT IN THE NW 
GULF. LOW PRES TROUGH DEVELOPS ALONG THE TEXAS COAST SUN NIGHT. 
A COLD FRONT WILL THEN MOVE OFF THE TEXAS COAST SUN NIGHT. THE 
FRONT WILL EXTEND FROM THE SE LOUISIANA COAST TO TAMPICO TEXAS 
EARLY TUE AND THEN MOVE E OF THE AREA WED. NLY WINDS BRIEFLY 
INCREASE TO 20 KT W OF THE FRONT TUE. WEAK HIGH PRES RIDGE 
ACROSS THE GULF WED AND THU 

SW N ATLC...
WEAKENING COLD FRONT EXTENDS FROM 31N71W TO S FLORIDA. A LINE OF 
SHOWERS IS JUST E OF THE FRONT. WINDS ARE LIGHT WITH THE FRONT.
THE FRONT WILL WEAKEN EVEN FURTHER EARLY SUN FROM 31N65W TO 
28N70W THEN DISSIPATES SUN NIGHT. HIGH PRES WILL BUILD E ALONG 
30N MON THROUGH TUE AND ELY WINDS INCREASE TO 20 KT OVER THE SE 
PORTION OF THE AREA. ANOTHER COLD FRONT WILL APPROACH THE SE 
U.S. COAST EARLY WED  WITH SW WINDS INCREASING TO 15-20 KT IN NW 
PORTION OF THE AREA. THE FRONT WILL EXTEND FROM 31N77W TO 
CENTRAL FLORIDA WED AFTERNOON. THE FRONT WEAKENS FROM 31N71W TO 
NW BAHAMAS THU. NE WINDS BRIEFLY INCREASE TO 20 KT W OF THE 
FRONT LATE WED INTO EARLY THU. 

CARIBBEAN AND TROPICAL N ATLC...
HIGH PRES SHIFTING NE OF THE AREA AND LOWER PRES ASSOCIATED WITH 
THE WEAKENING COLD FRONT PASSING N OF THE CARIBBEAN IS ACTING TO 
DIMINISH TRADE WINDS ACROSS THE AREA. SEAS ARE GENERALLY 5-7 FT 
IN THE E CARIBBEAN...3-5 FT IN THE W CARIBBEAN...AND 6-7 FT IN 
THE TROPICAL N ATLC. HIGH PRES BUILDING N OF THE AREA WILL WILL 
INCREASE THE WINDS TO 20 KT IN THE ATLC PASSAGES AND NEAR THE 
COAST OF COLOMBIA SUN NIGHT THROUGH TUE WHILE ELY WINDS WILL 
INCREASE TO 20 KT E OF 75W TUE AND WED. THE HIGH WEAKENS 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