LOS ANGELES — A rare October storm pummeled parts of Southern California with heavy rain and strong winds Tuesday, threatening wildfire-scarred neighborhoods with the possibility of mudslides and prompting some evacuations.

As downpours moved through the region, drivers hydroplaned and some accidents were reported on flooded roads. The National Weather Service issued flash flood warnings in several counties that recently had wildfires, which can leave hillsides without vegetation to hold soil in place and make it easier for the terrain to loosen during storms.

Rainfall amounts by Tuesday morning were as high as 3.5 inches in the Ventura County mountains. The western suburbs of Los Angeles received up to 2 inches, meteorologists said.

Firefighters rescued two people and two dogs from t

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