Flood — Contra Costa, California

2020-01-16 · near San Ramon, Contra Costa, California

Event narrative

Roadway flooding at I-680 S and Crow Canyon Rd off ramp. Vehicles hydroplaning.

Wider weather episode

A potent cold front swept through the region on January 16th bringing widespread rain, gusty winds, low elevation snow, and thunderstorms. This system brought widespread roadway flooding, downed trees, small hail, and snow as low as 2400 ft in elevation. Numerous flights were delayed or canceled at SFO due to the weather.

View location on OpenStreetMap → (37.7768, -121.9765)

Source: NOAA Storm Events Database, event_id 867513. Narrative written by the NWS forecast office that issued the report.