Idaho earthquakes

M2.3 earthquake 9 km NNW of Georgetown, Idaho

A magnitude 2.3 earthquake struck 9 km NNW of Georgetown, Idaho on Thu, Oct 12, 2017, 11:23 PM MDT (05:23 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M4.0 15 km NNW of Georgetown, 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
2.3 (ml), micro
Local time
UTC
2017-10-13 05:23:32 UTC
Depth
10.0 km (6.2 mi), shallow
Epicenter
42.557° N, 111.422° W
Region
Idaho
Felt reports
1
Tsunami flag
No
Status
Reviewed by a seismologist

Did you feel it?

1 person reported to the USGS what they felt; the strongest reported shaking was II, weak shaking.

Did You Feel It? map: shaking reported by the public
Shaking reported by the public, by area. Map: USGS Did You Feel It?

How well it is located

Reviewed by a seismologist.

Location uncertainty
About 1.5 km horizontally, 1.7 km in depth
Magnitude uncertainty
±0.06
Depth from
Operator assigned
Station coverage gap
43°
Stations used
40

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 121 in the 60 days after this one and at least 200 in the 30 days before it.

After

The first 60 of 121.

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us1000ar9n (also filed as uu60252772). Read Tue, Sep 29, 2026, 11:52 PM UTC.