The U.S. Geological Survey confirmed a 3.2 quake centered 4 miles east of Challis at 9:22 a.m. Monday. Later in the afternoon a 3.1 quake hit Yellowstone National Park, on the north end of Yellowstone Lake.
In January, a 4.9 magnitude tremor shook Challis—the strongest in the area since 2005—and was felt as far away as Boise, Garden City and Mountain Home. The most powerful quake in Idaho history came in 1983 near Borah Peak, when a 6.9 earthquake
resulted in two deaths and caused $12.5 million in damage to the Challis-Mackay area.