The Mendocino Complex Fire, which has been designated the largest recorded wildfire in California history, continued to spread overnight, growing to a total of 290,692 acres as of 7 a.m. Tuesday, according a Cal Fire incident update.
The complex fire is comprised of the Ranch and River fires, both of which sparked July 27 near Clear Lake. Total containment for the complex has improved slightly to 34 percent, Cal Fire said.
After a day of hot, dry winds fueled by a high-pressure system on Monday, progress was made on the smaller River Fire, as fire personnel reached 78 percent containment on the 48,920-acre blaze as of 7 a.m. Tuesday, a Cal Fire incident update said.
The larger Ranch Fire remained active overnight, expanding to 241,772 acres and continuing to hold at 20 percent containment, due in part to dry, heavy fuel, high temperatures and limited access to the area by firefighters.
Various parts of Lake, Mendocino and Colusa counties remain under evacuation orders and advisories, and the region continues to see road closures, notably along Highways 20 and 29. Find up-to-date information on evacuations on the Cal Fire incident information page here.
Crews will continue to work on tying in remaining containment lines on the River Fire, Cal Fire reported.
The National Wildfire Coordinating Group, which includes both the U.S. Forest Service and the National Park Service, defines a complex fire as “two or more individual incidents located in the same general area which are assigned to a single incident commander or unified command.”