Flood — Contra Costa, California

2022-12-27 · near Cameo Acres, Contra Costa, California

Event narrative

The roof of a Big 5 Sporting Goods store in San Ramon caved in the early morning hours of the 27th after a main beam broke in the center of the store. Local officials from the San Ramon Valley Protection District stated that they believed heavy rain was a factor in the roof collapse. The collapse caused water and debris to flow into the Big 5; the Rite Aid pharmacy next door was also flooded. Nearby businesses in the shopping center were closed as a precaution.

Wider weather episode

A strong low pressure system moving down the Pacific Coast tapped into sub-tropical moisture, bringing heavy rain and strong winds from the night of December 26th through the 27th. A wind advisory was issued for the immediate coastline and coastal mountains and East Bay Hills. A Flood Watch covered the same coastal areas and the North Bay valleys, and several Urban and Small Stream Flood Advisories were issued for areas under the Watch.

View location on OpenStreetMap → (37.7764, -121.9717)

Source: NOAA Storm Events Database, event_id 1080033. Narrative written by the NWS forecast office that issued the report.