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Marine Weather Discussion (Text)



000
AGXX40 KNHC 310548
MIMATS

MARINE WEATHER DISCUSSION    
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
200 AM EDT SAT JUL 31 2010

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

GULF OF MEXICO...
A WEAK FRONTAL TYPE TROUGH OVER THE NE GULF HAS A SW TO W WIND 
SHIFT AT 5 TO 10 KT. A SECOND TROUGH EXTENDS FROM SW FL TO THE 
EXTREME NW YUCATAN PENINSULA. SEEMS THE TROUGHS WILL MERGE INTO 
A SINGLE N TO S WEAK TROUGH EXTENDING FROM THE MS DELTA TO THE 
NW YUCATAN TONIGHT WITH SURFACE HIGH PRES CENTER MEANDERING OVER 
THE NW GULF. THE TROUGH WILL MOVE W SUN THROUGH MON ACROSS THE 
WESTERN WATERS AND INLAND NE MEXICO AND E TX MON NIGHT. BY THEN 
THE SURFACE HIGH WILL REFORMED OVER THE NE GULF WITH A RIDGE W 
TO THE TX COAST AT 29N. THEREAFTER...THE HIGH CENTER WILL SHIFT 
N ACROSS THE LOWER MS VALLEY AS BROAD LOW PRES FORMS OVER THE S 
CENTRAL GULF. THE NORTHERN EXTENSION OF A SERIES OF TROPICAL 
WAVES WILL PASS E TO W THROUGH THE SOUTHERN WATERS WILL LITTLE 
MORE THAN A NE TO E WIND SHIFT. EXPECTING MOSTLY 5 TO 10 KT AND 
SEAS 1 TO 2 FT THROUGHOUT THE PERIOD.

SW N ATLC...
A FRONTAL TROUGH CONTINUES E TO W ALONG 33N BETWEEN 70W AND 80W. 
SHOWERS AND TSTMS CONTINUE NEAR 29N75W BUT IS ASSOCIATED WITH AN 
UPPER TROUGH. THE SURFACE FRONTAL TROUGH WILL MOVE SE INTO THE 
AREA TODAY AND EXTEND FROM 31N70W TO 27N80W TONIGHT THROUGH SUN. 
FURTHER S...AN E TO W RIDGE EXTENDS ALONG 31N55W TO 24N81W. THIS 
RIDGE WILL CHANGE LITTLE THROUGH SUN THEN BEGIN TO SHIFT N 
PUSHING THE REMNANTS OF THE FRONTAL TROUGH NW LEAVING AN E TO W 
RIDGE FROM 31N60W TO 30N81W BY SUNRISE WED. SW FLOW N OF RIDGE 
AND E OF FRONTAL TROUGH WILL INCREASE TO 15 TO 20 KT SUN. ELY 
FLOW WELL S OF THE RIDGE WILL MAX AT 15 TO 20 KT THROUGHOUT SE 
BAHAMAS AND ATLC WATERS N OF HISPANIOLA AND PUERTO RICO EARLY 
NEXT WEEK.   

CARIBBEAN SEA AND TROPICAL N ATLC...
A TROPICAL WAVE RE-LOCATED ALONG 81W...WILL MOVE W AT 10 KT 
AND THIS MOTION SHOULD MOVE WAVE THROUGH GULF OF HONDURAS BY 
LATE SUN. PREVIOUS ASSOCIATED CONVECTION SW OF JAMAICA IS 
DECREASING ATTM. A SECOND WAVE OVER THE E CARIBBEAN HAS BEEN 
MOVING W AT ABOUT 17 KT. ASSUMING THAT MOTION CONTINUES WAVE 
SHOULD BE ALONG 75W SUN...83W MON...AND 87W TUE. A THIRD WAVE 
ALONG 50W WILL REACH ALONG 55W AROUND SUNSET TODAY AND ENTER THE 
E CARIBBEAN SUNSET SUN...REACHING ALONG 80 LATE WED. LOW PRES 
NEAR 10N34W HAS WEAKENED AND IS NOW EXPECTED TO FIZZLE OUT 
RATHER THAN TRACK WNW ACROSS TROPICAL WATERS.

WARNINGS...

SW N ATLC...
.NONE.

CARIBBEAN...
.NONE.

.GULF OF MEXICO...
.NONE.

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

$$
FORECASTER NELSON




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