M2.4 earthquake 14 km NNW of Georgetown, Idaho

A magnitude 2.4 earthquake struck 14 km NNW of Georgetown, Idaho on Mon, Sep 4, 2017, 3:22 PM MDT (21:22 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M5.0 9 km NNW of Georgetown, Idaho. This one was a foreshock.

Map

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

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
2.4	ML, local (Richter)	USGS National Earthquake Information Center	Preferred · Reviewed · ±0.05 · 52 stations
2.47	ML, local (Richter)	University of Utah Seismograph Stations	Final · ±0.086 · 12 stations

The USGS’s account of the effects of this earthquake.

Two events about 5 seconds apart.

From the USGS event page for us2000afnb. U.S. Geological Survey text and figures are in the public domain.

No one has reported feeling this quake to the USGS.

Reviewed by a seismologist.

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

Within 100 km, magnitude 1.5 and up: at least 202 in the 60 days after this one and at least 200 in the 30 days before it.

The first 60 of at least 202.

From the USGS Earthquake Hazards Program and its partner networks, event us2000afnb (also filed as uu60233412). Read Fri, Oct 2, 2026, 9:41 AM UTC.