Flash Flood — Yuma, Arizona

2025-09-04 · near Laguna, Yuma, Arizona

Event narrative

Portions of Barranca, Aberdeen, and Imperial Dam Roads impassable due to flooding, mud, and debris. 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 City of Yuma area seeing the most impacts.

View location on OpenStreetMap → (32.8668, -114.4215)

Source: NOAA Storm Events Database, event_id 1292974. Narrative written by the NWS forecast office that issued the report.