M1.8 earthquake 38 km ENE of Thompson Springs, Utah

A magnitude 1.8 earthquake struck 38 km ENE of Thompson Springs, Utah on Thu, Sep 30, 2021, 4:54 PM MDT (22:54 UTC), 6 km (4 mi) below the surface.

A larger quake followed: M2.4 16 km SSE of Sunnyside, Utah. This one was a foreshock.

Map

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

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 201 in the 60 days after this one and 126 in the 30 days before it.

The first 60 of at least 201.

From the USGS Earthquake Hazards Program and its partner networks, event uu60460737. Read Sat, Oct 3, 2026, 3:59 AM UTC.