The Napa Valley Register reported that authorities have been going to homes north of Silverado Resort asking residents to leave.

A fire has burned multiple vehicles in a salvage yard and about 20 acres of vegetation Sunday afternoon in unincorporated Napa County, Cal Fire officials said.

The National Weather Service had issued a red flag warning for the Bay Area early Sunday through Tuesday, predicting gusty winds and dry conditions. Emergency lines were inundated with callers reporting smoke in the area. Several fire crews were deployed to the scene, including five engines, two aircraft and two bulldozers.

The Sonoma County Sheriff’s Office says deputies were dispatched to help firefighters and California Highway Patrol officers with evacuations.

“Very, very volatile fire conditions”, McLean said. In Calistoga, an evacuation center was opened at the Calistoga Fairgrounds.

The Napa County Sheriff’s Department blocked off several roads near the scene, including Green Island Road.

A 200-acre fire near Atlas Peak in the hills above Napa led to the evacuation of hundreds of homes.