Los Angeles ? Firefighters gained ground Sunday against three wildfires burning across Southern California but worried about a forecast for hot winds.

A 1,045-acre fire in Burbank was 67 percent contained after firefighters were aided by cooler, overnight breezes, said Capt. Ron Bell of the Burbank Fire Department.

Residents returned to about 70 evacuated homes in Sunset Canyon. But firefighters were concerned about a forecast for warmer winds that could bring 50 mph gusts and re-ignite what appeared to be a “cold mountain,” Bell said.

“A little wind could blow those embers into the green and then we’d be starting from scratch,” Bell said.

Crews were kept at the scene a little longer and positioned near homes that could be threatened if the winds kicked up.

Elsewhere, more than 1,000 emergency personnel battled a blaze in and around San Bernardino National Forest.

The 935-acre fire was 60 percent contained Sunday but had the potential to flare up in windy conditions because of dead trees and grass in the area, according to the U.S. Forest Service.