The Thompson Fire, burning near Oroville, has grown to over 5.5 square miles and forced over 26,000 people to evacuate.
Firefighters are making progress containing the southern edge of the fire, but face challenges in the steep northern terrain.
Several other fires are burning throughout the state, including a new fire near Oroville called the Grubbs Fire.
Evacuation zones have been expanded, and authorities urge residents to be prepared for potential power outages due to fire risk.
Due to the extreme fire danger, fireworks are banned in most of Butte County and many other areas.
Hot, dry conditions are expected to persist for the next week, creating a critical fire risk.
The California Governor's office has secured federal funding to help fight the wildfires.
Governor Gavin Newsom has activated the State Operations Center to coordinate firefighting efforts and provide support to affected communities. Federal funding has also been approved to assist with the firefighting efforts.