000
AGXX40 KNHC 200611
MIMATS

MARINE WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
200 AM EDT TUE APR 20 2010

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

WEAK TROUGH OVER THE WESTERN GULF OF MEXICO FROM JUST S OF 
GALVESTON TEXAS TO 21N95W WILL MOVE DRIFT E TO SE LOUISIANA
TO THE UPPER COAST OF MEXICO TUE THEN DISSIPATE WED. OTHERWISE
LIGHT PRES GRADIENT ACROSS THE AREA THROUGH WED THEN HIGH
PRES STRENGTHENS OVER THE EASTERN GULF THU AND SLY WINDS 
INCREASE OVER THE WESTERN GULF. THE HIGH MOVE E INTO THE ATLC
AND 15-20 KT WINDS ACROSS THE GULF W OF AROUND 87W BY FRI
AND SPREAD ACROSS MOST OF THE GULF ON SAT AHEAD OF THE NEXT
COLD FRONT WHICH WILL MOVE OFF THE TEXAS COAST SAT AFTERNOON.

ATLC COLD FRONT EXTENDS FROM 28N65W TO 23N79W. THE FRONT WILL 
EXTEND FROM 25N65W TO THE SOUTHERN BAHAMAS TONIGHT AND WEAKEN 
OVER THE SE SE PORTION OF THE AREA WED AND E OF THE AREA THU. 
ANOTHER COLD FRONT WILL MOVE INTO THE FAR NW PORTION OF THE AREA 
WED AND EXTEND FROM 31N70W TO THE NORTHERN BAHAMAS THU THEN MOVE 
RAPIDLY E OF THE AREA FRI. COULD SEE SOME 15-20 KT WINDS E OF 
THE TROUGH. A WEAK HIGH PRES OVER THE NW PORTION OF THE AREA FRI 
WITH LIGHT WINDS ACROSS THE ENTIRE AREA WITH THESE CONDITIONS
CONTINUING INTO SAT.

WEAK TROUGH OVER THE NW CARIBBEAN FROM EASTERN CUBA ACROSS 
JAMAICA TO 15N82W WILL DISSIPATE LATER TODAY. NW WINDS 10-15 KT 
W OF THE TROUGH EARLY...THEN THE WINDS BECOME VARIABLE LATER 
TODAY AND THEN ELY BY WED. MOSTLY LIGHT WINDS ACROSS THE 
REMAINDER OF THE AREA THROUGH THU THEN THE TRADES ONCE AGAIN 
INCREASE TO 15-20 KT OVER THE S CENTRAL CARIBBEAN FRI AND SAT.

WARNINGS...
ATLC...
.NONE.

CARIBBEAN...
.NONE.

GULF OF MEXICO...
.NONE.

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

$$
FORECASTER DGS