M2.9 earthquake 11 km ESE of Alpine, Wyoming

A magnitude 2.9 earthquake struck 11 km ESE of Alpine, Wyoming on Tue, Oct 10, 2017, 2:14 PM MDT (20:14 UTC), 4 km (3 mi) below the surface.

A larger quake followed: M4.1 8 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.

2 people reported to the USGS what they felt; the strongest reported shaking was III, weak shaking.

Reviewed by a seismologist.

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

Within 100 km, magnitude 1.5 and up: 171 in the 60 days after this one and 28 in the 30 days before it.

The first 60 of 171.

From the USGS Earthquake Hazards Program and its partner networks, event us1000apt4 (also filed as mb80260474). Read Wed, Sep 23, 2026, 9:20 AM UTC.