M1.7 earthquake 28 km E of La Sal, Utah

A magnitude 1.7 earthquake struck 28 km E of La Sal, Utah on Sat, Dec 19, 2020, 7:54 PM MST (02:54 UTC), 0 km (0 mi) below the surface.

A larger quake followed: M2.7 37 km ENE of Thompson Springs, Utah. 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
1.66	Md, duration	University of Utah Seismograph Stations	Preferred · Final · ±0.117 · 4 stations
1.6	ML, local (Richter)	USGS National Earthquake Information Center	Reviewed · ±0.049 · 54 stations

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: 4 in the 60 days after this one and 8 in the 30 days before it.

From the USGS Earthquake Hazards Program and its partner networks, event uu60422372 (also filed as us7000cskq). Read Thu, Oct 1, 2026, 10:10 AM UTC.