A raging wildfire in Central California that has forced thousands from their homes spread rapidly on Thursday, threatening a town outside Yosemite National Park, fire officials said.

The so-called Detwiler Fire, which is menacing Mariposa and other communities in the Sierra Nevada foothills, is only 10 percent contained, the California Department of Forestry and Fire Protection, or Cal Fire, said on its website.

More than 3,000 firefighters battled that fire that has advanced over 70,096 acres (28,366 hectares), Cal Fire said, an increase of more than 22,000 acres since early Thursday morning.