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TROPICAL STORM ISELLE ADVISORY NUMBER  18
NATIONAL WEATHER SERVICE MIAMI FL
2 AM PDT THU SEP 19 2002
 
...ISELLE MOVING SLOWLY TOWARD THE BAJA PENINSULA...

AT 2 AM PDT...0900Z...THE CENTER OF TROPICAL STORM ISELLE WAS 
LOCATED NEAR LATITUDE 23.2 NORTH...LONGITUDE 113.1 WEST OR ABOUT 
130 MILES...210 KM...SOUTH-SOUTHWEST OF CABO SAN LAZARO MEXICO.  
 
ISELLE IS MOVING TOWARD THE NORTHEAST NEAR  5 MPH...7 KM/HR...AND 
THIS GENERAL MOTION IS EXPECTED TO CONTINUE TODAY...WITH A GRADUAL 
TURN TO THE NORTH LATER TONIGHT.  ON THIS TRACK...THE CENTER OF 
ISELLE IS EXPECTED TO BE JUST OFFSHORE THE SOUTHWEST COAST OF THE 
BAJA PENINSULA.
 
MAXIMUM SUSTAINED WINDS ARE NEAR  40 MPH... 65 KM/HR...WITH HIGHER
GUSTS.  SOME SLIGHT WEAKENING IS FORECAST DURING THE NEXT 24 
HOURS...AND ISELLE MAY BECOME A TROPICAL DEPRESSION LATER TODAY. 
 
TROPICAL STORM FORCE WINDS EXTEND OUTWARD UP TO  60 MILES
... 95 KM FROM THE CENTER.
 
THE ESTIMATED MINIMUM CENTRAL PRESSURE IS 1005 MB...29.68 INCHES.
 
ALTHOUGH THE CENTER OF ISELLE AND THE STRONGEST WINDS ARE EXPECTED 
TO REMAIN OFFSHORE...LOCALLY HEAVY RAINFALL MAY AFFECT PARTS OF THE 
SOUTHERN BAJA PENINSULA TODAY.  ALSO...HIGH WAVES AND DANGEROUS SURF 
CONDITIONS WILL DEVELOP ALONG THE SOUTHWEST BAJA PENINSULA COAST 
LATER TODAY.  
 
REPEATING THE 2 AM PDT POSITION...23.2 N...113.1 W.  MOVEMENT
TOWARD...NORTHEAST NEAR  5 MPH.  MAXIMUM SUSTAINED 
WINDS... 40 MPH.  MINIMUM CENTRAL PRESSURE...1005 MB.
 
THE NEXT ADVISORY WILL BE ISSUED BY THE NATIONAL HURRICANE CENTER 
AT 8 AM PDT.
 
FORECASTER STEWART/MOLLEDA
 
 
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