Tropical Storm Iselle — 2026
Eastern Pacific. Peak winds 70 mph (60 kt). Tropical cyclone: Aug 23 – Aug 27, 2026 (UTC).
By the numbers
"Peak winds" means the strongest sustained wind NHC estimated at any point in the storm's life, averaged over one minute, not gusts. ACE adds up a storm's wind strength every six hours while it is at least a tropical storm, so a long-lived strong storm scores far higher than a brief weak one.
How it ended
The National Hurricane Center issued its last advisory on Iselle, number 15, at Aug 27, 03:00 UTC. That advisory was titled "Post-Tropical Cyclone Iselle".
In that advisory's own words (in English):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
NHC's best track ends at Aug 27, 00:00 UTC, with the system classed as a tropical depression.
Landfalls are not listed here: NHC's operational track does not record them reliably. NHC's Tropical Cyclone Report will.
Timeline
Times are UTC. Status changes come from NHC's best track, which records the storm every six hours.
- Formed as a tropical storm
- First NHC advisory ("Tropical Storm Iselle")
- Peak intensity: 70 mph (60 kt), 988 mb
- Weakened to a tropical depression
- Last advisory, from the National Hurricane Center
Track
The 2026 season so far · NHC's archive of every advisory on Iselle