M2.5 earthquake 10 km NW of Challis, Idaho

A magnitude 2.5 earthquake struck 10 km NW of Challis, Idaho on Sun, Apr 13, 2014, 5:04 PM MDT (23:04 UTC), 8 km (5 mi) below the surface.

A larger quake followed: M4.4 13 km NW of Challis, Idaho. This one was a foreshock.

Map

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

Different scales measure different things and differ by a few tenths. The USGS marks one as preferred, and it is the one this page uses.

Mag.	Scale	Computed by	Notes
2.5	ML, local (Richter)	USGS National Earthquake Information Center	Preferred · Reviewed
2.6	Mc	Montana Bureau of Mines and Geology	Preliminary · ±0.5 · 3 stations

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: 85 in the 60 days after this one and 60 in the 30 days before it.

The first 60 of 85.

From the USGS Earthquake Hazards Program and its partner networks, event usc000pj9t (also filed as mb14411840). Read Sat, Oct 3, 2026, 8:01 PM UTC.