Henriette — 2025

Henriette formed from a tropical wave that crossed Central America at the end of July and became a tropical depression at 0600 UTC on 4 August 2025 about 450–500 miles southwest of the Baja California Peninsula. It strengthened to a tropical storm the same day and tracked generally west-northwestward across the eastern Pacific. The cyclone weakened to a remnant low as it approached the central Pacific, then reorganized and re-intensified, becoming a hurricane on 10–11 August as it moved well north of the Hawaiian Islands. Henriette existed as a tropical system from 4 August until dissipating in mid-August, with the official best track covering 4–13 August 2025. There were no landfalls associated with Henriette. The storm remained over open water for its entire life and did not prompt any coastal watches or warnings. Henriette’s peak intensity was estimated at 75 kt (about 86 mph) with a minimum central pressure of 986 mb around 1200 UTC on 11 August 2025. At peak it was a Category 1 hurricane on the Saffir–Simpson scale and maintained hurricane strength for a short period while passing well north of Hawaii. Observed storm surge and rainfall impacts were minimal because Henriette remained far from land. The NHC report lists no coastal surge measurements or significant rainfall totals at populated locations such as Hawaiian counties or Baja California sites, and there were no reports of storm tide inundation or widespread heavy rainfall tied to Henriette. There were no confirmed deaths and no reports of damage associated with Henriette. The system produced no direct impacts to populated areas during its lifespan. Noteworthy aspects include that Henriette reached its peak intensity unusually far north of Hawaii, where conditions normally limit strengthening. Forecasts of the storm’s formation location were highly accurate, and NHC track and intensity forecasts for Henriette generally performed better than or comparable to recent averages and many guidance models.