Flash Flood — Los Angeles, California

2025-02-13 · near Altadena, Los Angeles, California

Event narrative

Heavy rain produced significant flash flooding and debris flows at the intersection of Lake Avenue and East Altadena Drive. Mud and debris flows resulted in the closure of all three northbound lanes.

Wider weather episode

A powerful winter storm impacted all of Southwestern California. The storm generated strong southerly winds, gusting up to 87 MPH. The storm also produced very heavy rainfall with totals up to 8 inches reported in the mountains along with numerous reports of flooding. Also, thunderstorms associated with the winter storm produced a weak tornado.

View location on OpenStreetMap → (34.1900, -118.1300)

Source: NOAA Storm Events Database, event_id 1267970. Narrative written by the NWS forecast office that issued the report.