SAN FRANCISCO — Mudslides on fire-scarred land in the eastern Sierra Nevada forced people from their homes, while milder weather at Northern California helped firefighters get a leg up on blazes there and allowed residents of several fire-weary towns to return home.

A huge mudslide in an area that was devastated by wildfires last year damaged about 50 homes and caused the temporary closure of a main road at the California town of Independence on the eastern side of the Sierra Nevada. Severe thunderstorms Saturday set off the mudslide 300 yards wide and up to three feet deep,a spokeswoman for the Inyo County Sheriff’s Department, Carma Roper, said.

The mud oozed across California Highway 395, prompting a detour, and some mud came within a half mile of the Los Angeles Aqueduct, which supplies much of Los Angeles’ water.

Residents of more than 50 homes were evacuated and could not return to their properties, she said. Officials were using a nearby school as a shelter. Fires were not burning in that easternmost corner of California.

And no rain fell on most of the other California fires. The California Department of Forestry and Fire Protection said 288 blazes were still burning around the state, most of them in the mountains ringing the northern edge of the Central Valley.

There was no precipitation at Butte County, north of Sacramento, where thousands of homes were threatened as recently as Friday. But firefighters and homeowners got some relief yesterday as moist air and calmer winds helped progress. Thousands of people evacuated from their homes twice during the last month began returning to Paradise for the first time since Tuesday.

About 300 homes remained threatened in and around the town, down from 3,800 homes on Friday, and officials said the fire was 55 percent contained.

An evacuation order was lifted yesterday for the nearby town of Concow, one ridge away from Paradise and prone to strong winds, Butte County and fire officials said.

Fifty homes were destroyed and one person was apparently killed in the area last week when wind-propelled flames jumped a containment line. The person’s charred remains were found Friday in a burned-out home; the cause of death hadn’t been determined.

The Butte County blazes were among hundreds of wildfires to blacken nearly 1,300 square miles and destroy about 100 homes across California since an enormous lightning storm ignited most of them three weeks ago.

Just to the south, a pair of blazes burning in the foothills west of Lake Tahoe were sending plumes of smoke toward the alpine resort area. The soot was sporadic, but air quality was so bad it prompted the cancellation of the annual Donner Lake Triathlon.

Residents in the tourist town of Big Sur, driven away by flames just days ago, were returning to their homes, a CalFire battalion chief stationed in the area, Paul Van Gerwen, said.

Yesterday morning, state authorities reopened the last piece of scenic Highway 1 near Big Sur that had been closed because of the fires, he said. The fire was 61% contained after destroying 27 homes.

At Los Padres National Forest at Santa Barbara County, firefighters continued to make headway against a blaze that has raged through the Santa Ynez Mountains.

Fire crews had contained 90% of the fire and expect to complete the containment lines on Wednesday, a U.S. Forest Service spokesman, David Daniels, said.

Fifty-five homes remained under evacuation warning. “We’re starting to get close,” he said.

In Washington state, 200 residents from Spokane Valley who were forced to evacuate Friday were allowed to return to their homes. Firefighters were mopping up the fire that burned 1.5 square miles and reported it 60% contained.

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Associated Press writers Christina Hoag and Thomas Watkins contributed to this report from Los Angeles.