Idaho earthquakes

M3.3 earthquake 10 km SE of Challis, Idaho

A magnitude 3.3 earthquake struck 10 km SE of Challis, Idaho on Sat, Jan 3, 2015, 3:58 PM MST (22:58 UTC), 13 km (8 mi) below the surface.

A larger quake followed: M3.5 9 km SE of Challis, Idaho. This one was a foreshock.

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

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The earthquake

Magnitude: 3.3 (ml), minor
Local time: Sat, Jan 3, 2015, 3:58 PM MST
UTC: 2015-01-03 22:58:25 UTC
Depth: 12.6 km (7.8 mi), shallow
Epicenter: 44.445° N, 114.137° W
Region: Idaho
Felt reports: 5
Tsunami flag: No
Status: Reviewed by a seismologist

Did you feel it?

5 people reported to the USGS what they felt; the strongest reported shaking was IV, light shaking.

How well it is located

Reviewed by a seismologist.

Location uncertainty: About 3.0 km horizontally, 5.3 km in depth
Station coverage gap: 53°
Stations used: 37

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 80 in the 60 days after this one and 41 in the 30 days before it.

After

The first 60 of 80.

Before

Earthquakes today Idaho earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event usc000tbjd (also filed as mbmb15917373, mb15917373). Read Tue, Sep 22, 2026, 9:11 AM UTC.