Flood — Contra Costa, California

2019-11-26 · near Walnut Creek, Contra Costa, California

Event narrative

Media reported flooded roads at the intersection of Broadway and Cypress St in Walnut Creek.

Wider weather episode

A rapidly intensifying and ultimately record setting low pressure system moved into northern California and the Pacific Northwest in late November. A strong cold front associated with this system swept through the Bay Area bringing heavy rain, roadway flooding, strong winds, low elevation snow, small hail, and large waves to the region. This low set a record for the lowest sea-level pressure ever recorded in the state of California near Crescent City of 973.4 mb. Numerous webcams picked up snow on our area peaks down to 2000 feet in elevation.

View location on OpenStreetMap → (37.8996, -122.0597)

Source: NOAA Storm Events Database, event_id 860168. Narrative written by the NWS forecast office that issued the report.