A Los Angeles County Fire Department Urban Search and Rescue (USAR) member carries a 91-year-old woman from her flood-damaged home on Ocean View Boulevard on Saturday in La Canada Flintridge, Calif.

La Canada Flintridge, Calif. ? Thunderous mudslides damaged dozens of homes, swept away cars and pushed furniture into the streets of the foothills north of Los Angeles on Saturday as intense winter rain poured down mountains denuded by a summer wildfire.

No injuries were reported,but residents and emergency responders were caught off guard by the unpredicted ferocity of the storm, which damaged more than 40 homes and dozens of vehicles.

Some 540 homes were eventually evacuated at the foot of the San Gabriel Mountains after heavy rains overflowed debris basins, carried away cement barricades and filled houses with mud and rocks.

Some residents complained they were not told to get out until the brunt of the damage was done — unlike during heavy rains last month when officials repeatedly warned foothill communities to be on alert.

Rainfall totals topped 4 inches in a 24-hour period in some areas, the National Weather Service said. Crews working the road said the weight of the deluge had shifted some houses from their foundations.

Family photographs, toys, furniture items and other items were dotted throughout the debris that gushed into yards and streets. At least five homes had been “red-tagged” by county inspectors, meaning they were unsafe to enter.