Idaho earthquakes

M2.9 earthquake 9 km NNW of Georgetown, Idaho

A magnitude 2.9 earthquake struck 9 km NNW of Georgetown, Idaho on Mon, Oct 16, 2017, 5:01 PM MDT (23:01 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: 2.9 (ML, local (Richter)), micro
Magnitude from: USGS National Earthquake Information Center
Local time: Mon, Oct 16, 2017, 5:01 PM MDT
UTC: 2017-10-16 23:01:05 UTC
Depth: 9.8 km (6.1 mi), shallow
Epicenter: 42.553° N, 111.425° W
Region: Idaho
Felt reports: 1
Tsunami flag: No
Status: Reviewed by a seismologist

Magnitude estimates

Different scales measure different things and differ by a few tenths. The USGS marks one as preferred, and it is the one this page uses.

Mag.	Scale	Computed by	Notes
2.9	ML, local (Richter)	USGS National Earthquake Information Center	Preferred · Reviewed · ±0.037 · 94 stations
2.78	ML, local (Richter)	University of Utah Seismograph Stations	Final · ±0.179 · 12 stations

Did you feel it?

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

How well it is located

Reviewed by a seismologist.

Location uncertainty: About 0.9 km horizontally, 2.7 km in depth
Magnitude uncertainty: ±0.04
Depth from: From location
Station coverage gap: 43°
Stations used: 41

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 87 in the 60 days after this one and at least 200 in the 30 days before it.

After

The first 60 of 87.

Before

Earthquakes today Idaho earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us1000at4t (also filed as uu60013364, uu60253497). Read Thu, Oct 1, 2026, 5:48 AM UTC.