Idaho earthquakes

M2.5 earthquake 9 km SE of Challis, Idaho

A magnitude 2.5 earthquake struck 9 km SE of Challis, Idaho on Sun, Jan 4, 2015, 2:12 PM MST (21:12 UTC), 11 km (7 mi) below the surface.

A larger quake followed: M3.8 11 km ESE of Challis, Idaho. This one was a foreshock.

Challis forecast More in Idaho

Map

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

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The earthquake

Magnitude: 2.5 (ml), micro
Local time: Sun, Jan 4, 2015, 2:12 PM MST
UTC: 2015-01-04 21:12:54 UTC
Depth: 10.9 km (6.8 mi), shallow
Epicenter: 44.455° N, 114.139° W
Region: Idaho
Tsunami flag: No
Status: Reviewed by a seismologist

Did you feel it?

No one has reported feeling this quake to the USGS.

How well it is located

Reviewed by a seismologist.

Location uncertainty: About 2.5 km horizontally, 6.6 km in depth
Station coverage gap: 79°
Stations used: 25

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 61 in the 60 days after this one and 61 in the 30 days before it.

After

The first 60 of 61.

Before

Earthquakes today Idaho earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event usc000thu2 (also filed as mbmb15222170, mb15222170). Read Tue, Sep 29, 2026, 3:53 AM UTC.