Flash Flood in Imperial County, California

Flash Flood September 27, 2025 · Imperial County, California

Where the report was made, with tornadoes recorded within 15 miles over the years.

What the National Weather Service wrote

California Highway Patrol reported 2 feet of water near the area of Ross and Picacho Roads. Timing estimated from radar. No damages or injuries reported.

The wider storm

An upper-level low situated over southern CA provided strong upper-level forcing for ascent across the area. Cold 500 mb temperatures of -12 to -13 degrees Celsius and steep lapse rates led to moderate instability values with MLCAPE peaking close to 1000 J/kg. The combination of the upper-level forcing and moderate instability led to the development of strong thunderstorms across the southeastern portion of Imperial County with rainfall rates in excess of 2-3 inches per hour. This led to areas of flash flooding.

Began near Winterhaven (32.7831, -114.6174).

Source: NOAA Storm Events Database, event 1293522. Narratives are written by the National Weather Service forecast office that issued the report.

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