Idaho earthquakes

M3.0 earthquake 1 km ESE of Challis, Idaho

A magnitude 3.0 earthquake struck 1 km ESE of Challis, Idaho on Tue, Jun 11, 1985, 5:09 PM MDT (23:09 UTC), 5 km (3 mi) below the surface.

A larger quake followed: M3.3 20 km ESE of Challis, Idaho. This one was a foreshock.

Challis forecastMore in Idaho

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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
3.0 (ml), minor
Local time
UTC
1985-06-11 23:09:37 UTC
Depth
5.0 km (3.1 mi), shallow
Epicenter
44.499° N, 114.216° 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.

Depth from
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Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 10 in the 60 days after this one and 3 in the 30 days before it.

After

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp0002frp. Read Tue, Sep 22, 2026, 4:16 PM UTC.