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
