Octave — 2025

Hurricane Octave formed from a cluster of thunderstorms that moved westward from northern South America. A small low developed several hundred miles off southwestern Mexico and the system became a tropical depression at 0000 UTC on 30 September 2025 about 825 nautical miles south of the southern tip of the Baja California Peninsula. It tracked generally west-northwestward through early October, then made an abrupt U-turn on 5 October and moved eastward under the influence of nearby Hurricane Priscilla, Tropical Storm Raymond, and an approaching upper-level trough. Octave weakened and lost its identity by 10 October. Octave did not produce any coastal watches or warnings and remained well offshore for its entire life, so there were no landfalling events to report. The storm stayed over open water and never made landfall along the Pacific coast of Mexico or any other coastline. The storm reached its maximum strength early on 6 October. Peak sustained winds were estimated at 80 kt (92 mph) with a minimum central pressure of 980 mb, making Octave a Category 1 hurricane at its peak. After 0000 UTC 6 October it weakened fairly quickly, falling below hurricane strength later that day and becoming a remnant low by 10 October. Because Octave remained over the central eastern Pacific and did not approach the coast, there were no reported storm surge measurements or notable rainfall totals tied to the cyclone in populated areas. The report notes there were no surface observations of tropical-storm-force winds associated with Octave and no reports of damage. There were no confirmed deaths—direct or indirect—and no reported damage attributable to Octave. Forecasts of the storm’s formation were challenging for global models due to the nearby development of multiple cyclones; genesis forecasts were poor initially, though the system was highlighted in the National Hurricane Center’s Tropical Weather Outlook up to 60 hours before formation and was ultimately within NHC’s forecasted genesis areas. NHC’s official track and intensity forecasts performed better than many guidance models for this storm, and no coastal impacts were recorded.