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This is the final warning / advisory for this storm as it has weakened below warning levels and/or the storm system is no longer a tropical cyclone.

Go to the main page to see active storms.

Hurricane Time Machine

ISELLE Current Status

...ISELLE HAS BECOME A POST-TROPICAL CYCLONE... ...THIS IS THE FINAL NHC ADVISORY ON THE SYSTEM...

Current Wind Speed 30 knots / 35 MPH

Max Predicted Wind Speed 30 knots / 35 MPH at

ISELLE Land Hazards

México
Avisos y Alertas
Guatemala
Boletín Meteorológico Informativo
Belize
El Salvador
Informes Especiales

ISELLE Tracker

ISELLE Satellite Loop

visible satellite loop of Post-Tropical Cyclone ISELLE from wisc.edu

visible satellite loop of Post-Tropical Cyclone ISELLE from wisc.edu

ISELLE Alternate Tracking Map

ISELLE Spaghetti Models

Spaghetti models for ISELLE can be found here:

ISELLE spaghetti models page »

ISELLE Watches and Warnings

Post-Tropical Cyclone ISELLE Tropical Cyclone Update

Post-Tropical Cyclone ISELLE Public Advisory

000
WTPZ34 KNHC 270232
TCPEP4
 
BULLETIN
Post-Tropical Cyclone Iselle Advisory Number  15
NWS National Hurricane Center Miami FL       EP092026
800 PM PDT Wed Aug 26 2026
 
...ISELLE HAS BECOME A POST-TROPICAL CYCLONE...
...THIS IS THE FINAL NHC ADVISORY ON THE SYSTEM...
 
 
SUMMARY OF 800 PM PDT...0300 UTC...INFORMATION
----------------------------------------------
LOCATION...23.0N 125.9W
ABOUT 1015 MI...1635 KM W OF THE SOUTHERN TIP OF BAJA CALIFORNIA
MAXIMUM SUSTAINED WINDS...35 MPH...55 KM/H
PRESENT MOVEMENT...WNW OR 300 DEGREES AT 9 MPH...15 KM/H
MINIMUM CENTRAL PRESSURE...1002 MB...29.59 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 Post-Tropical Cyclone Iselle
was located near latitude 23.0 North, longitude 125.9 West. The
post-tropical cyclone is moving toward the west-northwest near 9 mph
(15 km/h) and this motion is expected to continue over the next few 
days.
 
Maximum sustained winds are near 35 mph (55 km/h) with higher gusts.
Iselle has become a Post-Tropical Cyclone and is expected to 
continue to weaken until it dissipates in a couple of days or less. 
 
The estimated minimum central pressure is 1002 mb (29.59 inches).
 
 
HAZARDS AFFECTING LAND
----------------------
SURF: Swells generated by Iselle will continue to affect the west
coast of the Baja California Peninsula 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
-------------
This is the last public advisory issued by the National Hurricane 
Center on this system. For additional information on the remnant low 
please see High Seas Forecasts issued by the National Weather 
Service, under AWIPS header NFDHSFEPI, WMO header FZPN01 KWBC, and 
on the web at ocean.weather.gov/shtml/NFDHSFEPI.php

 
$$
Forecaster Katz/Hagen/Papin

Public Advisory not available for this storm.

Post-Tropical Cyclone ISELLE Forecast Discussion

000
WTPZ44 KNHC 270233
TCDEP4
 
Post-Tropical Cyclone Iselle Discussion Number  15
NWS National Hurricane Center Miami FL       EP092026
800 PM PDT Wed Aug 26 2026

Iselle continues to have no deep convective organization this 
evening with the low-level center still fully exposed due to dry air 
and moderate wind shear. With the lack of convection occuring, 
Iselle is now considered to have become a Post-Tropical Cyclone. The 
most recent TAFB Dvorak fix has 1.5/25 kt and the objective 
satellite intensity estimates are in the range of 25-43 kt. Based on 
that data, the current NHC initial intensity has been set to 30 kt.

Iselle should continue to move west-northwestward over the next 
couple of days, steered by a mid-level ridge to the north of the 
cyclone. Increasing wind shear, cooler sea surface temperatures, and 
a drier air mass will continue to weaken the system. The 
post-tropical remnant low is expected to gradually spin down 
and open into a trough in about 2 to 3 days. However, it still 
remains possible that the cyclone could spin down even sooner. Very 
minor adjustments were made to the previous NHC track and intensity 
forecasts.

For additional information on the remnant low please see High Seas
Forecasts issued by the National Weather Service, under AWIPS
header NFDHSFEPI, WMO header FZPN01 KWBC, and on the web at
ocean.weather.gov/shtml/NFDHSFEPI.php

 
FORECAST POSITIONS AND MAX WINDS
 
INIT  27/0300Z 23.0N 125.9W   30 KT  35 MPH...POST-TROP/REMNT LOW
 12H  27/1200Z 23.6N 127.2W   25 KT  30 MPH...POST-TROP/REMNT LOW
 24H  28/0000Z 24.3N 128.8W   20 KT  25 MPH...POST-TROP/REMNT LOW
 36H  28/1200Z 24.8N 130.2W   20 KT  25 MPH...POST-TROP/REMNT LOW
 48H  29/0000Z 25.3N 131.6W   20 KT  25 MPH...POST-TROP/REMNT LOW
 60H  29/1200Z...DISSIPATED
 
$$
Forecaster Katz/Hagen/Papin

ISELLE storm path from NHC

Time Speed Location Status
30 knots 23.0, -125.9 POST-TROPICAL CYCLONE
25 knots 23.6, -127.2 POST-TROPICAL CYCLONE
20 knots 24.3, -128.8 POST-TROPICAL CYCLONE
20 knots 24.8, -130.2 POST-TROPICAL CYCLONE
20 knots 25.3, -131.6 POST-TROPICAL CYCLONE
0 knots DISSIPATED


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