417
WTPZ34 KNHC 260231
TCPEP4
BULLETIN
TROPICAL STORM ISELLE ADVISORY NUMBER 11
NWS NATIONAL HURRICANE CENTER MIAMI FL EP092026
800 PM PDT TUE AUG 25 2026
..ISELLE WEAKENS SLIGHTLY
SUMMARY OF 800 PM PDT...0300 UTC...INFORMATION
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LOCATION...21.3N 122.5W
ABOUT 815 MI...1310 KM W OF THE SOUTHERN TIP OF BAJA CALIFORNIA
MAXIMUM SUSTAINED WINDS...50 MPH...85 KM/H
PRESENT MOVEMENT...WNW OR 285 DEGREES AT 9 MPH...15 KM/H
MINIMUM CENTRAL PRESSURE...996 MB...29.42 INCHES
WATCHES AND WARNINGS
--------------------
THERE ARE NO COASTAL WATCHES OR WARNINGS IN EFFECT.
DISCUSSION AND OUTLOOK
----------------------
AT 800 PM PDT (0300 UTC), THE CENTER OF TROPICAL STORM ISELLE WAS
LOCATED NEAR LATITUDE 21.3 NORTH, LONGITUDE 122.5 WEST. ISELLE IS
MOVING TOWARD THE WEST-NORTHWEST NEAR 9 MPH (15 KM/H), AND THIS
GENERAL MOTION IS EXPECTED FOR THE NEXT COUPLE OF DAYS, WITH A TURN
TOWARDS THE WEST POSSIBLE LATE ON WEDNESDAY.
MAXIMUM SUSTAINED WINDS HAVE DECREASED TO NEAR 50 MPH (85 KM/H) WITH
HIGHER GUSTS. WEAKENING IS FORECAST, AND ISELLE COULD BECOME A
POST-TROPICAL CYCLONE ON THURSDAY.
TROPICAL-STORM-FORCE WINDS EXTEND OUTWARD UP TO 230 MILES (370 KM)
FROM THE CENTER.
THE ESTIMATED MINIMUM CENTRAL PRESSURE IS 996 MB (29.42 INCHES).
HAZARDS AFFECTING LAND
----------------------
SURF: SWELLS GENERATED BY ISELLE ARE AFFECTING THE WEST COAST OF THE
BAJA CALIFORNIA PENINSULA, AND WILL CONTINUE FOR A COUPLE MORE DAYS.
THESE SWELLS ARE LIKELY TO CAUSE LIFE-THREATENING SURF AND RIP
CURRENT CONDITIONS. PLEASE CONSULT PRODUCTS FROM YOUR LOCAL WEATHER
OFFICE.
NEXT ADVISORY
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NEXT COMPLETE ADVISORY AT 200 AM PDT.
FORECASTER KATZ/PAPIN
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