Firefighters worked through the night to protect homes as erratic winds threatened to push an 800-acre wildfire toward more than 130 homes.
Commander Joe Hartman said 80 to 100 homes were in immediate danger as firefighters and homeowners cleared brush from around houses.
As constantly shifting winds fanned the flames Sunday, fire managers were doubtful they could contain the blaze.
About 450 firefighters dug shallow trenches on steep mountainsides, lit fires at strategic points and made aerial drops of fire-retardant slurry to keep the flames from spreading. More crews, air tankers and helicopters were expected today.
Hundreds of evacuated residents remained away from the mountain neighborhood Sunday.