471
WTPZ34 KNHC 251442
TCPEP4
BULLETIN
TROPICAL STORM ISELLE ADVISORY NUMBER 9
NWS NATIONAL HURRICANE CENTER MIAMI FL EP092026
800 AM PDT TUE AUG 25 2026
...LARGE ISELLE FORECAST TO SLOWLY WEAKEN DURING THE NEXT FEW
DAYS...
SUMMARY OF 800 AM PDT...1500 UTC...INFORMATION
----------------------------------------------
LOCATION...20.9N 121.1W
ABOUT 730 MI...1175 KM W OF THE SOUTHERN TIP OF BAJA CALIFORNIA
MAXIMUM SUSTAINED WINDS...70 MPH...110 KM/H
PRESENT MOVEMENT...WNW OR 295 DEGREES AT 10 MPH...17 KM/H
MINIMUM CENTRAL PRESSURE...988 MB...29.18 INCHES
WATCHES AND WARNINGS
--------------------
THERE ARE NO COASTAL WATCHES OR WARNINGS IN EFFECT.
DISCUSSION AND OUTLOOK
----------------------
AT 800 AM PDT (1500 UTC), THE CENTER OF TROPICAL STORM ISELLE WAS
LOCATED NEAR LATITUDE 20.9 NORTH, LONGITUDE 121.1 WEST. ISELLE IS
MOVING TOWARD THE WEST-NORTHWEST NEAR 10 MPH (17 KM/H), AND THIS
GENERAL MOTION IS EXPECTED FOR THE NEXT COUPLE OF DAYS, WITH A TURN
TOWARDS THE WEST POSSIBLE ON THURSDAY.
MAXIMUM SUSTAINED WINDS REMAIN NEAR 70 MPH (110 KM/H) WITH HIGHER
GUSTS. SLOW WEAKENING IS FORECAST DURING THE NEXT FEW DAYS.
TROPICAL-STORM-FORCE WINDS EXTEND OUTWARD UP TO 205 MILES (335 KM)
FROM THE CENTER.
THE ESTIMATED MINIMUM CENTRAL PRESSURE IS 988 MB (29.18 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
-------------
NEXT COMPLETE ADVISORY AT 200 PM PDT.
FORECASTER BLAKE
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