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BULLETIN
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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