A magnitude 2.8 earthquake was reported Sunday afternoon near Helena. The U.S. Geological Survey said the quake occurred 3:38 p.m. about 2 kilometers (1.2 miles) north of South Hills. The depth ...

Yellowstone National Park was rocked by an earthquake last night, sparking fears its supervolcano could be awakening. The United States Geological Survey (USGS) detected a magnitude 3.9 quake near ...

The U.S. Geological Survey said the quake occurred 3:38 p.m. about 2 kilometers (1.2 miles) north of South Hills. The depth was reported as 10.0 kilometers or 6.2 miles. Helena Police Department Sgt.

The U.S. Geological Survey said the quake occurred 3:38 p.m. about 2 kilometers (1.2 miles) north of the South Hills. Earlier reports said the quake was a magnitude 2.8, but that was adjusted later.