A shallow magnitude 4.9 earthquake was reported Saturday morning 4 miles from the town of Challis, Idaho, according to the U.S. Geological Survey.
The Custer County Sheriff's Office has not received any reports of injuries or damaged structures, said Deputy Launna Gunderson.
A few large rocks rolled down on to State Highway 75 but were removed, she said.
"We are a little shook up," she said.
The temblor occurred at 9:44 a.m. PST. The epicenter was about 119 miles from Boise, Idaho.
The depth was recorded at 5.0 miles. There was a magnitude 2.9 earthquake near Challis, Idaho, on Monday, and a magnitude 2.5 earthquake near Challis on Sunday.