As California faces a critical fire danger, utility companies are preemptively shutting off power to hundreds of thousands of customers in the Golden State.
The outages come as a way to reduce the risk of wildfire, as winds -- which contribute to blazes -- pick up throughout the state.
Last year's Camp Fire, the deadliest fire in California's history, was sparked by power lines owned and operated by Pacific Gas and Electric, according to Cal Fire. The fire, which originated near Pulga in Northern California in Nov. 2018, killed dozens.
A PG&E meteorologist said the weather forecast this week is the strongest wind event since the Oct. 2017 North Bay fires which were caused by "electric power and distribution lines, conductors and the failure of power poles," reported ABC San Francisco station KGO.
In Northern California, where winds were picking up Wednesday morning, 480,000 customers were without power as of 5 a.m. local time Wednesday.
Public Safety Power Shutoff in Marin is underway. Currently no traffic lights at the intersection of N. Bridge and Bridgway Blvd in Sausalito/Marin City. Please use caution and treat outages at traffic lights as 4-way stops. #MarinPSPS #pgeshutoff pic.twitter.com/ZVxJfyXOnj— Marin County Sheriff (@MarinSheriff) October 9, 2019
In four Northern California counties -- Humboldt, Lake, Placer and Napa -- over 75 percent of customers lost power.
More waves of shutoffs are coming, and a total of 800,000 Northern California customers are expected to be impacted, PG&E officials said Tuesday night.
Local school districts as well as UC Berkeley have canceled classes due to the outages.
Long lines @ the gas pumps in #Napa. Power outages pushing people to prepare pic.twitter.com/FjnrEVEWaz— Lisa Amin Gulezian (@LisaAminABC7) October 9, 2019
"We understand the effects this event will have on our customers and appreciate the public’s patience as we do what is necessary to keep our communities safe and reduce the risk of wildfire,” Michael Lewis, PG&E’s senior vice president of Electric Operations, said in a statement.
Storm Prediction Center has portions of the North Bay and Northern California in it's rare "Extreme" Fire Wx Outlook for later today. #CAwx #OneLessSpark #FireWeather #RedFlagWarning pic.twitter.com/e20yAzGdP3— NWS Bay Area (@NWSBayArea) October 9, 2019
Another angle of the #BriceburgFire from an alternate PG&E camera. pic.twitter.com/y8uXCbCqHo— NWS Hanford (@NWSHanford) October 8, 2019
Southern California could be impacted, too, as gusty winds move in later in the week.
A preemptive shutdown in Southern California would be historic -- Southern California Edison incident commander Terry Ohanian said he’s been with the company for over 35 years and they have never attempted a preemptive shut down like this before.
Very dry and gusty #SantaAnaWinds are expected late Wed night-Fri afternoon over LA/Ventura counties. A ????Red Flag Warning???? has been issued for most of LA and VTA counties effective 3am Thu-6pm Fri. Use extreme caution with potential ignition sources! #SoCal #CAwx #CAfire pic.twitter.com/RSX3BdC5yL— NWS Los Angeles (@NWSLosAngeles) October 8, 2019
"We won't just de-energize for the sake of doing it," Ohanian told ABC News Wednesday morning. "We know it's an inconvenience for our customers so we try to be thoughtful about what we do, but the potential is there."
"And unlike a planned outage where we can schedule it for a certain period of time, this is a function of when the wind blows and when the weather materializes," he said.
Some helpful tips when preparing for Public Power Safety Shutoffs. #CAwx pic.twitter.com/AVBwiZDytq— NWS Bay Area (@NWSBayArea) October 9, 2019
Ohanian said 170,000 Southern California Edison customers may be impacted.
The California Highway Patrol is reminding drivers that if a traffic light is flashing, treat it as a stop sign intersection. If the light is out, treat as an all-way stop.