Flood Watch

Locations Affected

Los Angeles, CA ∙ Long Beach, CA ∙ Pasadena, CA ∙ Pomona, CA ∙ Palmdale, CA ∙ Santa Clarita, CA ∙ Oxnard, CA ∙ Lancaster, CA ∙ Thousand Oaks, CA ∙ Torrance, CA

Full Alert Message

Flood Watch National Weather Service Los Angeles/Oxnard CA 1222 PM PST Tue Dec 23 2025 ...FLOOD WATCH REMAINS IN EFFECT FROM 4 PM PST THIS AFTERNOON THROUGH THURSDAY EVENING... * WHAT...Significant and widespread flooding caused by excessive rainfall will be likely, with potential debris flow impacts across recent burn scars. * WHERE...For the Malibu Coast. * WHEN...From 4 PM PST this afternoon through Thursday evening. * IMPACTS...This prolonged strong Atmospheric River storm system will bring periods of heavy rain from late Tuesday into Thursday evening. Potential flooding impacts include the threat of significant and widespread urban roadway flooding, a high risk of major rock/mudslides, and rapid rises in creeks, streams, and rivers which will likely lead to swift water rescues. The recent burn scars will be at risk for debris flows, possibly damaging. These flooding impacts will likely lead to significant travel delays and road closures during this busy holiday travel period. * ADDITIONAL DETAILS... - Heavy rainfall with possible thunderstorms is expected with high rainfall rates, potentially exceeding one inch per hour during the peak of the event Tuesday night into Wednesday across favored south facing slopes and near thunderstorms. Another round of heavier rain and thunderstorms will be possible on Thursday. - http://www.weather.gov/safety/flood PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop.

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