M3.6 earthquake 9 km SE of Challis, Idaho

A magnitude 3.6 earthquake struck 9 km SE of Challis, Idaho on Sat, Jan 3, 2015, 11:35 PM MST (06:35 UTC), 11 km (7 mi) below the surface.

A larger quake followed: M3.8 5 km ESE of Challis, Idaho. This one was a foreshock.

Map

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

The USGS ShakeMap: shaking estimated from seismic stations and the quake’s size, on the Modified Mercalli intensity scale.

3 people reported to the USGS what they felt; the strongest reported shaking was III, weak shaking.

The USGS PAGER system estimates deaths and economic losses from the shaking and the population and buildings exposed to it.

How the rock slipped, from the moment tensor, and the USGS estimate of landslides and liquefaction.

Reviewed by a seismologist.

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

Within 100 km, magnitude 1.5 and up: 70 in the 60 days after this one and 51 in the 30 days before it.

The first 60 of 70.

From the USGS Earthquake Hazards Program and its partner networks, event usc000tbk2 (also filed as mb15809640). Read Tue, Sep 22, 2026, 9:59 AM UTC.