They have a two-day window before potentially dangerous gusts return later this week.
Firefighters say they have made good progress stopping the advance of flames toward Santa Barbara but the fire continues to burn more to the north and east in the Los Padres National Forest. Some 18,000 structures are still considered threatened by flames.
They were planning a "heli-torching" operation north and west of Ojai on Highway 33. That involves lighting fires from a chopper to burn off fuel in a controlled manner before the Thomas Fire flames reach that area. They want to reduce fuel back to the area burned by the Zaca fire in 2007.
The Thomas Fire has consumed about 270,500 acres in Ventura and Santa Barbara counties, and destroyed more than 1,000 homes, making it the third largest wildfire in California history.
It was estimated at 45 percent containment.
Evacuation orders remain in place for Montecito and Summerland, but some orders were lifted
Firefighters say the Santa Ana winds flared up over the weekend, driving the flames toward Montecito and destroying at least three homes there.
"We had strong gusts of over 60 mph," Capt. Steve Concialdi with the Orange County Fire Authority. "I like to say the firefighters did not lose these homes. The firestorm destroyed them. We had such intense winds and it was blowing the fire down all around here."