000
AGXX40 KNHC 171822
MIMATS

MARINE WEATHER DISCUSSION 
NWS NATIONAL HURRICANE CENTER MIAMI FL
230 PM EDT SUN APR 17 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.

SOUTHWEST N ATLC W OF 55W...
WEAK COLD FRONT FROM 31N75W TO 26N80W QUICKLY STALLS FROM 31N72W 
TO 24N80W TONIGHT AND BECOMES DIFFUSE BY MON.  HIGH PRES RIDGE 
BUILDS IN ITS WAKE AND REMAINS IN PLACE BLOCKED BY DEEP LAYER 
TROUGH TO ITS E AND LOWER PRES ACROSS CENTRAL PLAINS.  DEEP 
LAYER TROUGH ALONG 55W DRIFT NW BRINGING NEAR GALE FORCE WINDS  
N OF 23N FROM 53W-57W TONIGHT THEN DIMINISHING MON TO STRONG E 
BREEZE.  MODEL GUIDANCE IN GENERAL AGREEMENT WITH SLOW NW DRIFT 
ALTHOUGH WITH MINOR DIFFERENCES IN POSITIONS.  ECMWF IS ONLY ONE 
TAKING TROUGH W OF 65W BY THU WHILE MOST OTHERS DISSIPATE IT 
BEFORE THEN. 

CARIBBEAN SEA AND TROPICAL ATLC W OF 55W...
LIGHT TO MODERATE BREEZE ACROSS ENTIRE CARIBBEAN AND TROPICAL N 
ATLC THROUGH MON AS CENTRAL ATLC HIGH PRES RIDGE ARE DISTURBED 
BY PERSISTENT DEEP LAYER TROUGH ALONG 55W.  MODEL GUIDANCE IN 
GOOD AGREEMENT ON TAKING TROUGH NW WITH LIGHT TO MODERATE NE 
BREEZE AND 8 FT SEAS AFFECTING TROPICAL ATLC N OF 18N.

GULF OF MEXICO...
WEAK COLD FRONT OVER EXTREME SE GULF THIS AFTERNOON MOVE OUT OF 
BASIN TONIGHT.  HIGH PRES 1020 MB BEHIND FRONT BUILD OVER NE 
GULF PROMPT MODERATE E TO SE FLOW ACROSS ENTIRE AREA THROUGH MON 
NIGHT.  DEVELOPING TROUGH OVER MEXICO TIGHTENS GRADIENT TUE AND 
INCREASE WINDS W OF 90W TO A STRONG BREEZE THROUGH THU. 

WARNINGS..

ATLC...
.NONE.

CARIBBEAN...
.NONE.

GULF OF MEXICO...
.NONE.

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

$$
FORECASTER WALLY  BARNES