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Cal Fire investigators announced Tuesday night that the massive Dixie Fire in Northern California was caused by a tree contacting a PG&E distribution line west of the Cresta Dam.

The California Department of Forestry and Fire Protection last updated its fire hazard severity zone maps in 2007, well before recent record-breaking megafires swept across California.

The El Dorado County District Attorney announced the arrest of a father and son for allegedly starting the massive Caldor Fire, which threatened communities near Lake Tahoe last August.

A preliminary estimate shows that the Caldor Fire cost tens of millions in lost economic activity. Wildfires, and the economic disruption they cause, have a large economic impact. But right now, California has a mostly incomplete picture of how much fires cost the state each year.

Fire danger levels were lowered from High to Moderate in South Central Oregon on Monday, including in the Fremont Winema National Forest, the Klamath Basin and most of the Lakeview district.

A new state map shows which buildings in Shasta County have been damaged or destroyed by the Fawn Fire so far.

A new wildfire hazard tool developed by a national lab could be integrated into the state of California’s fire codes.

The fire grew to 5,850 acres by Friday morning, destroying at least 25 structures and threatening about 9,000 more.

Flames have already scorched a grouping of sequoias that mark the entrance to the groves, where the base of the world's largest tree has been wrapped in protective foil.

California lawmakers approved a budget package Thursday that would guarantee nearly $1 billion in wildfire prevention funding for the current fiscal year and require at least $200 million annually for the next six years.

This week marks a year since wildfires destroyed thousands of homes in Jackson County over the Labor Day weekend.

With large portions of Oregon under an air quality advisory, the groups most at risk for adverse health effects include infants and young children, people with heart or lung disease, older adults and pregnant women.