Some areas in Southern California, a region plagued by drought conditions, saw more than inch of rain this weekend.
Rain brought much needed aid to the Los Angeles firefight, moving the fires surrounding the city closer to containment.
Several wildfires broke out in San Diego County early Tuesday, triggering evacuation orders and school closures as Southern California faced strong winds and regional red flag warnings.
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Areas where the Palisades, Franklin, Eaton, Bridge, and Hughes wildfires burned are under a flood watch, the weather service said Sunday. Fresh burn scar areas stand at greater risk of mudslides because they no longer have trees and vegetation providing support to the land, according to AccuWeather Meteorologist Jacob Hinson.
NWS San Diego issues alerts for fire weather and a winter storm with snow and gusty winds in Southern California.
The blazes - named Laguna, Sepulveda, Gibbel, Gilman and Border 2 - flared up on Thursday in Los Angeles, San Diego, Ventura and Riverside.
San Diego County expects rain and mountain snow after severe Santa Ana winds and wildfires across Southern California, marking a hopeful turn in a dry water year.
Cal Fire and local agencies are investigating several recent fires in the region, including the Border 2 Fire that has burned over 6,600 acres.
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Officials cautioned that ash in recent burn zones was a toxic mix of incinerated cars, electronics, batteries, building materials, paints, furniture and other household items.