About 209,000 customers could have their power shut off this week mitigate the risk, Pacific Gas & Electric said.
“The potential safety shutoff is planned for varying start times depending on location beginning Wednesday evening,” the company said.
The power shutoff could affect 15 counties in the Sierra Foothills and the North Bay, including Amador, Butte, Calaveras, El Dorado, Lake, Mendocino, Napa, Nevada, Placer, Plumas, San Mateo, Sierra, Sonoma, Sutter, and Yuba counties, PG&E said.
Customers will be notified by texts, emails and automated phone calls about 48 hours in advance.
A combination of gusty winds, dry grass and dead and dying trees are fueling the fire risk, and therefore the need for possible power shutoffs, PG&E said.
PG&E’s announcement comes as firefighters grapple with a busy wildfire season.
The Little Mountain wildfire burning in San Bernardino County has damaged at least three homes and injured at least one firefighter, the San Bernardino County Fire District said.
Another 40 homes are still threatened by the fire, which has been difficult to contain due to high winds and sloping terrain.
Windy conditions in the San Bernardino area will likely continue through Tuesday, the fire district said.
On Monday, the Pacific Palisades fire torched 40 acres, Los Angeles Fire Chief Patrick Butler said.
Many Californians are coping with the reality that wildfires can strike at any time.
“You go into denial immediately, saying, ‘I hope it’s not what I think it is,'” Charlie Lyons said after he noticed the plumes of smoke while hiking Monday. “We’re in a terrible cycle right now.”
His daughter, also named Charlie, said she feared for the worst.
“I immediately started packing my stuff, my valuables,” 22-year-old Charlie Lyons said. “My friend last year lost her house in Malibu. You can’t predict what Mother Nature is going to do.”
CNN’s Christina Maxouris, Paul Vercammen and Joe Sutton contributed to this report.