M3.3 earthquake 19km S of Trona, CA

A magnitude 3.3 earthquake struck 19km S of Trona, CA on Thu, May 14, 2020, 4:37 PM PDT (23:37 UTC), 6 km (4 mi) below the surface.

A larger quake followed: M5.5 17km S of Searles Valley, CA. 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
3.26	ML, local (Richter)	Southern California Seismic Network	Preferred · Final · ±0.149 · 213 stations
2.9	ML, local (Richter)	USGS National Earthquake Information Center	Reviewed · ±0.03 · 150 stations

14 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: 194 in the 60 days after this one and 177 in the 30 days before it.

The first 60 of 194.

From the USGS Earthquake Hazards Program and its partner networks, event ci39200671 (also filed as us70009gdb). Read Mon, Oct 5, 2026, 2:31 PM UTC.