In its 11th day, the Mendocino Complex is now the largest wildfire in California’s record books, the state’s Department of Forestry and Fire Protection says.

The two fires — named Ranch and River — started within an hour of each other on the afternoon of July 27; the cause is under investigation. They have burned 283,800 acres (443 square miles) in Mendocino, Lake and Colusa counties.

The agency’s records, which go back to 1932, list these as the largest fires: