Thousand Oaks. Raging wildfires force widespread evacuations in the city reeling from a mass shooting.

THOUSAND OAKS, CAL IF .» A city reeling from the tragedy of a mass shooting was under a siege of a different sort Friday as raging wildfires on both sides of the city forced widespread evacuations and shut down part of the main freeway to town.

Flames driven by powerful winds torched at least 150 homes in Southern California, burning parts of tony Calabasas and mansions in Malibu and prompting orders for 250,000 people— including some celebrities — to flee as the fire marched across the Santa Monica Mountains toward the sea. The cause of the blazes was not known.

For Thousand Oaks, which had been considered one of the safest cities in the nation before a gunman massacred 12 people at a country music bar, the spasm of violence jolted the city’s sense of security. Encroaching flames, despite the nearconstant threat of fire in the bone-dry state, presented an entirely different hazard.

“It’s devastating. It’s like ‘welcome to hell,’ ” resident Cynthia Ball said about the dual disasters while she was outside the teen center serving as a shelter for evacuees. “I don’t even know what to say. It’s like we’re all walking around kind of in a trance.”

A day earlier, the facility had been the location where grieving family members had gathered and received the grim news on the fate of loved ones who had not returned from the Borderline Bar and Grill, where a Marine combat veteran went on a shooting rampage Wednesday.

Three-quarters of the city of 130,000 was under evacuation orders — and that likely included people affected by the shooting, said Thousand Oaks Mayor Andy Fox.

“Here we are just a few hours later talking now about another crisis right here in Thousand Oaks,” Fox said, making the distinction that the shooting victims and their families had experienced a permanent loss. “Those lives will never be recovered. Tonight we’re talking about a serious fire situation, but thankfully we have not lost a single life. And as difficult as it may be, homes can be rebuilt, property can be reacquired.”

Throughout the day, air tankers swooped through the skies, making low passes to dump water and flame retardant as firefighters tried to protect homes amid gusts topping 60 mph. The winds and smoky conditions made for difficult firefighting and at times grounded firefighting aircraft.

In addition to the large hillside homes that ignited and blazed brightly in the middle of the day, the “Western Town” at Paramount Ranch, a popular filming location that included an Old West jail, hotel and saloon, burned to the ground.