(WEST YELLOWSTONE, MT) – Yellowstone National Park had its biggest earthquake in nearly 30 years Sunday. A magnitude 4.8 temblor hit the north end of the park near the Norris Geyser Basin just after 6:30 a.m. Following a series of small earthquakes in central Idaho last week, a magnitude 3.1 earthquake struck an area about seven miles northwest of Challis just before 5:30 a.m. Sunday. No damage was reported in either incident.
Paul Menser, BizMojo Idaho