M3.5 earthquake 14 km ESE of Alpine, Wyoming

A magnitude 3.5 earthquake struck 14 km ESE of Alpine, Wyoming on Thu, Feb 1, 2018, 6:31 AM MST (13:31 UTC), 5 km (3 mi) below the surface.

Map

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

The USGS ShakeMap: shaking estimated from seismic stations and the quake’s size, on the Modified Mercalli intensity scale.

47 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: 27 in the 60 days after this one and 29 in the 30 days before it.

From the USGS Earthquake Hazards Program and its partner networks, event us1000cdp2 (also filed as mb80279779). Read Mon, Sep 28, 2026, 4:16 PM UTC.