Flood — Santa Clara, California

2021-03-10 · near Alum Rock, Santa Clara, California

Event narrative

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

Wider weather episode

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.

View location on OpenStreetMap → (37.3600, -121.8400)

Source: NOAA Storm Events Database, event_id 947406. Narrative written by the NWS forecast office that issued the report.