Idaho earthquakes

M1.7 earthquake 28 km SSW of Irwin, Idaho

A magnitude 1.7 earthquake struck 28 km SSW of Irwin, Idaho on Tue, May 15, 2018, 8:22 PM MDT (02:22 UTC), 6 km (4 mi) below the surface.

A larger quake followed: M3.3 12 km E of Soda Springs, Idaho. This one was a foreshock.

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Map

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

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The earthquake

Magnitude
1.7 (ml), micro
Local time
UTC
2018-05-16 02:22:17 UTC
Depth
6.0 km (3.7 mi), shallow
Epicenter
43.164° N, 111.404° 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 2.3 km horizontally, 20.7 km in depth
Magnitude uncertainty
±0.20
Depth from
Operator assigned
Station coverage gap
218°, poorly surrounded by stations
Stations used
10

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 55 in the 60 days after this one and 41 in the 30 days before it.

After

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event mb80293639. Read Mon, Sep 28, 2026, 12:38 PM UTC.