Earthquake shakes Colfax

The U.S. Geological Survey reported a magnitude 6.5 earthquake and five aftershocks shaking Central Idaho starting at about 5:53 p.m. March 31.

Residences of Colfax experienced the quake primarily as the sound of thunder and buildings shaking. Some reports were received of people feeling a slight tremor or experiencing a vertigo-like sensation.

The main quake struck about 43 miles west of Challis, in the Shake Creek area, the USGS reported. The agency received calls that the earthquake was felt as far away as Spokane.

Its epicenter was at a depth of six miles, the USGS reported.