PG&E Corp. was cutting power to about 195,000 people across Northern California in an attempt to keep its power lines from sparking wildfires amid another round of extreme heat, dry weather and high winds. Blazes still erupted, triggering evacuations and burning thousands of acres. As temperatures soared past 90 degrees Fahrenheit (32 degrees Celsius) on Sunday, PG&E — the utility giant that went bankrupt last year after its equipment ignited catastrophic blazes, began a shutoff that will leave parts of 16 counties out of power until the end of Monday. The National Weather Service has been warning that the risk of wildfires across the region would increase late Saturday evening and remain through Monday.

“The combination of wind, low humidity, and hot conditions will result in extreme fire weather conditions,” the weather service said. Temperatures in parts of Southern California were forecast to reach as high as 105 degrees through Thursday.

It’s the latest hardship for a state that’s been battered this year by increasingly extreme weather brought on by climate change and ensuing blackouts. Last month, a record-breaking heat wave triggered California’s first rotating power outages since the 2001 energy crisis — and was followed just three weeks later by another one. More than 8,000 wildfires have burned a record 3.7 million acres in the state this year, choking cities with smoke, killing at least 26 people and destroying more than 7,000 structures.

In Napa County, the Glass Fire broke out early Sunday and was raging uncontrollably, scorching at least 2,500 acres. The Zogg Fire in Shasta County had burned 7,000 acres. Both prompted evacuations.

Butte County also issued an immediate evacuation order for some communities on Sunday due to the ongoing North Complex Fire.

Utilities across the U.S. West are increasingly cutting power ahead of wind storms to reduce the chances of their live wires igniting blazes. In Southern California, investigators are looking at a power line owned by Edison International’s Southern California Edison as part of their probe into a fire that’s burning in the mountains near Los Angeles.