Major Storm Brings Threat of Flash Flooding, Debris Flow to Recent SoCal Burn Areas

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A strong storm that was poised to descend on portions of the state by midday Tuesday is prompting concerns about flash flooding and debris flows in recent burn areas.

The cold front, which originated in the Gulf of Alaska, was expected to reach the northern fringes of the San Francisco Bay Area around noon and push south into San Francisco by late afternoon. Most areas will see half an inch to 2 inches of rain. The heaviest rainfall will occur between 5 and 10 p.m., according to the National Weather Service.

Forecasters issued a flash flood watch from 2 to 10 p.m. for the portion of northern Sonoma County struck a month ago by the Kincade fire. The blaze charred nearly 78,000 acres and destroyed more than 370 homes in the region.

Meteorologists are warning of moderate to briefly heavy rainfall rates of a half-inch to three-quarters of an inch per hour, bringing the potential for flash flooding, rockslides and debris flows in the burn area. Officials urged residents to monitor weather reports and be prepared to take action if a flash flood warning is issued.

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