M1.9 earthquake 16 km SSE of Challis, Idaho

A magnitude 1.9 earthquake struck 16 km SSE of Challis, Idaho on Sat, Oct 8, 2016, 5:32 PM MDT (23:32 UTC), 5 km (3 mi) below the surface.

A larger quake followed: M2.2 14 km W of Clayton, Idaho. This one was a foreshock.

Map

Where this earthquake was located, with the others nearby. Select one for its page.

No one has reported feeling this quake to the USGS.

Reviewed by a seismologist.

Distance and direction from each place to the epicenter, with its forecast.

Within 100 km, magnitude 1.5 and up: 12 in the 60 days after this one and 2 in the 30 days before it.

From the USGS Earthquake Hazards Program and its partner networks, event mb80181864. Read Wed, Sep 30, 2026, 3:30 AM UTC.