Thunderstorm Wind — Imperial, California

2025-09-04 · near Winterhaven, Imperial, California

Event narrative

Downed tree on Railroad Ave blocking both lanes in Winterhaven. Wind gusts were estimated between 55-60 mph. Timing estimated from radar. No injuries reported.

Wider weather episode

An upper-level trough moving through the area providing strong upper-level ascent combined with MLCAPE values between 1500-3000 J/kg and PWAT values between 1.8-2.0 (associated with the remnants of Tropical Cyclone Lorena) resulted in numerous showers and thunderstorms across much of western AZ and southern CA. A cluster of strong to severe thunderstorms developed during the late afternoon hours over Yuma County and slowly moved westward, reaching the Lower Colorado River Valley before dissipating. With this cluster of storms, damaging winds, flash flooding and areas of dense blowing dust were observed with the Yuma area seeing the most impacts.

View location on OpenStreetMap → (32.7397, -114.6348)

Source: NOAA Storm Events Database, event_id 1292976. Narrative written by the NWS forecast office that issued the report.