Flood in Santa Clara County, California

Flood March 10, 2021 · Santa Clara County, California

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

What the National Weather Service wrote

Roadway flooding due to heavy rain at the southbound 280 offramp to Alum Rock offramp.

The wider storm

A cold upper low moved through the region in early March bringing widespread showers and isolated thunderstorms to the Greater Bay Area. This system caused roadway flooding, debris flows, lightning, and small hail. Snow was also reported on some of the areas peaks throughout the region as snow levels dropped down to 2,000 ft. A mudslide occurred along the River Fire burn scar in Monterey County sending mud and debris into nearby homes.

Began near Alum Rock (37.3600, -121.8400).

Source: NOAA Storm Events Database, event 947406. Narratives are written by the National Weather Service forecast office that issued the report.

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