For the latest updates on the Mendocino Complex Fire, read this story.

A fire that has been growing for nearly two weeks in Northern California, becoming the largest in modern state history, continued to rage overnight, as firefighters battled to keep the edges from eating into residential areas, officials said on Tuesday.

The Mendocino Complex Fire, which is burning northwest of Sacramento, reached more than 290,600 acres as of Tuesday morning, said Cal Fire, the state’s fire agency. It overtook last year’s 282,000-acre Thomas Fire on Monday to become the most sizable California fire in a century of record-keeping.

Benjamin Nicholls, a division chief of Cal Fire, said on Tuesday morning that crews were battling the expanding blaze along the northern edges of the fire, where it extends into mostly forested areas. He said crews were working on hot spots to make sure the fire does not creep into residential areas in the south.

“The increase of acreage is into the forest,” he said in an interview. “The fire is holding on the south side.”