SAN FRANCISCO — Tens of thousands of people in California were without electricity Thursday as utilities tried to reduce the risks of hot, windy weather that could blow over power lines and spark wildfires.
In Northern California, nearly 62,000 customers in 26 counties in the Sierra Nevada foothills, wine country and the central coast had no electricity, according to Pacific Gas and Electric Company, which began proactively turning off power Wednesday night. An additional 19,000 customers in Los Angeles, Kern and Ventura counties lost power Thursday, Southern California Edison said. Weather conditions that increase the fire risk were expected to last through Saturday.
Some of California's worst wildfires have been sparked by power equipment, and utilities in recent years have begun proactively shutting off power during dry, windy weather in an effort to prevent blazes.
Santa Ana winds hit Southern California
Los Angeles Mayor Karen Bass, who faced criticism for her city's response to deadly fires in 2025, said she has directed the fire department to deploy personnel and equipment ahead of the winds. The fire department has also requested assistance from the state's office of emergency services, she said.
“It’s a pretty widespread event of elevated fire weather, so the whole SoCal region should really be on alert,” said Rose Schoenfeld, a meteorologist with the National Weather Service.
Dry, warm and gusty northeast winds known as Santa Anas, which blow from the interior of Southern California toward the coast and offshore, are expected, with the strongest winds forecast for Thursday afternoon through Friday afternoon.
The winds could reach 20 to 40 mph (32 to 64 kph), with gusts from 50 to 70 mph (80 to 113 kph), in the San Gabriel mountains in Los Angeles County and the Santa Susana mountains, which are mostly in Ventura County, Schoenfeld said. Elevated, though brief, critical fire weather conditions are also forecast for portions of the Santa Lucia mountains in San Luis Obispo County.
A fire that sparked Thursday in the city of Azusa, north of LA, prompted evacuation orders for a neighborhood in the foothills of the San Gabriel mountains that were later downgraded to warnings. Some 200 firefighters were battling the wind-driven brush fire, which had burned 40 acres (16 hectares), Jonathan Torres, a spokesman with the Los Angeles County Fire Department, told KTLA-TV.
A small brush fire sparked in the early evening in Malibu, a coastal town west of LA, quickly prompting evacuation orders and warnings for a large swathe of the Santa Monica Mountains. A large cloud of black smoke over the hilltops could be seen on nearby cameras. The blaze grew to 80 acres (32 hectares) in a little over an hour and was threatening a Los Angeles County juvenile detention and rehabilitative facility.
Farther south near San Diego, a fire at Camp Pendleton was threatening buildings and led to evacuation orders in the Las Flores area of the military base, military officials said in a statement.
Crews with the Camp Pendleton Fire Department and the California Department of Forestry and Fire Prevention are fighting the blaze that sparked Thursday and had grown to more than 1,000 acres (406 hectares), sending billowing smoke into the air. Officials closed a portion of nearby Interstate 5, a key north-south route in Southern California.
The blaze is threatening infrastructure and has led to a power outage in the Las Pulgas area, where the fire started, military officials said.
Power cuts are widespread in Northern California
In Northern California, some communities in the Sierra Nevada and its foothills began experiencing strong winds, high temperatures and low humidity Wednesday night, the National Weather Service said.
The service issued a Red Flag Warning for parts of central and Northern California starting Thursday and lasting through Friday morning, saying any fires would spread rapidly. Such warnings are issued when weather conditions create an increased risk of wildfires.
Pacific Gas and Electric Company said Thursday it has notified 90,000 customers in 29 counties that they may lose power.
The potential interruption in service to customers from the Central Coast to the upper corners of the Sierra Nevada could last through Saturday afternoon, the company said.
Hot and windy conditions are expected through the weekend
In Southern California, the Red Flag Warning for the mountainous areas in Ventura and Los Angeles counties was in effect through Friday night.
“We are augmenting our staffing, positioning our people and pre-deploying equipment ahead of this weather so we are ready before the first call comes in,” Los Angeles Fire Chief Jaime Moore said. “We are asking residents to do their part, too. Clear the streets, have a plan and stay informed.”
In January 2025, the Palisades Fire — fanned by Santa Ana winds — ripped through a hillside Los Angeles neighborhood, killing 12 people and destroying mansions with spectacular ocean views. Authorities determined the Palisades Fire was a carryover from another fire that authorities alleged was started intentionally by a 29-year-old man.
Another fire that burned at the same time in the city of Altadena, in Los Angeles County, killed 19 people and destroyed more than 9,400 homes and businesses. That fire was caused by sparks from an idle transmission tower owned by Southern California Edison, officials said.
Schoenfeld said the Santa Ana winds are not going to be as strong as during those fires, when they were gusting 60 to 100 mph (96 to 160 kph).
Southern California Edison is considering public safety shutoffs that could affect 245,000 customers, with most of them — 124,000 — in Ventura County, just north of Los Angeles.