Los Angeles

NWS Issues Alert for Potential Southern California Flooding Amid Storm Surge

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Published on December 19, 2023
NWS Issues Alert for Potential Southern California Flooding Amid Storm SurgeSource: Unsplash/Austin Scherbarth

Los Angeles is bracing for a torrential downpour as the National Weather Service Los Angeles/Oxnard CA has issued a flood watch across Los Angeles, Ventura, Santa Barbara, and San Luis Obispo Counties, effective from late Tuesday evening through late Thursday night. Heavy rains are on the horizon, likely to drench the region with several inches of water, potentially leading to significant flooding, particularly in low-lying areas and near recent burn scars.

While two to four inches of rainfall is anticipated broadly, south-facing foothills and coastal slopes face the prospect of being deluged with four to eight inches. "Flooding caused by excessive rainfall is possible," warned the National Weather Service in a statement obtained by forecast.weather.gov, stressing the additional risks of flash flooding and debris flows in vulnerable areas, including the South Fire burn scar in Ventura County.

With southeast winds blowing at 5 to 10 mph, new precipitation between a tenth and a quarter of an inch appears imminent. The forecast predicts thunderstorms could also roll in after 4:00 p.m. on Wednesday, with similar conditions expected to extend into Thursday, carrying with them winds gusting from 10 to 15 mph.

Travel disruptions seem unavoidable due to the "extensive roadway flooding, especially in low-lying areas, and flooding of creeks and streams," as mentioned in the flood watch warning. Preparations for potential evacuations and travel adjustments are urged for those residing in flood-prone zones. "Flooding and rock/mudslide activity may lead to significant travel delays and road closures," noted forecast.weather.gov, and the region's populace is advised to stay alert for possible flood warnings and to prepare to act if flooding develops. Rainfall rates could escalate during thunderstorms, with possible peaks reaching an inch per hour in isolated areas.

Officials have appealed to the public to review the latest road conditions before commuting and to remain vigilant over the coming days.