The Panther fire in Tehama County has burned 10,000 acres and was only 10 percent contained as of Thursday night, according to the California Department of Forestry and Fire Protection.
The fire began Wednesday morning near Butte Meadows in mountainous terrain about 40 miles east of Chico, and grew quickly in the Mill Creek and Deer Creek drainages. Gusty down-canyon winds spread the fire, Cal Fire Capt. Matt Damon said.
The Cedar fire in Butte County, which started a few hours earlier and 12 miles away from the Panther fire, was 75 percent contained Thursday night and has consumed 55 acres.
The cause of both fires, which are burning in timber and timber slash, has not been determined, Damon said.