M3.3 earthquake 38 km SE of Mina, Nevada

A magnitude 3.3 earthquake struck 38 km SE of Mina, Nevada on Tue, Oct 20, 2020, 4:51 AM PDT (11:51 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M5.3 33 km SE of Mina, Nevada. 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
3.3	ML, local (Richter)	Nevada Seismological Laboratory	Preferred · Reviewed · ±0.37 · 18 stations
3.2	ML, local (Richter)	USGS National Earthquake Information Center	Reviewed · ±0.038 · 92 stations

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

1 person reported to the USGS what they felt; the strongest reported shaking was II, 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: at least 201 in the 60 days after this one and at least 200 in the 30 days before it.

The first 60 of at least 201.

From the USGS Earthquake Hazards Program and its partner networks, event nn00779626 (also filed as us6000c9zy). Read Sat, Oct 3, 2026, 1:22 PM UTC.