M3.0 earthquake 23km SSE of Fort Irwin, CA

A magnitude 3.0 earthquake struck 23km SSE of Fort Irwin, CA on Thu, Apr 22, 2021, 11:51 PM PDT (06:51 UTC), 2 km (1 mi) below the surface.

A larger quake followed: M3.1 13km SSW 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
3.01	ML, local (Richter)	Southern California Seismic Network	Preferred · Final · ±0.128 · 161 stations
2.8	ML, local (Richter)	USGS National Earthquake Information Center	Reviewed · ±0.037 · 96 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: 49 in the 60 days after this one and 17 in the 30 days before it.

From the USGS Earthquake Hazards Program and its partner networks, event ci39625767 (also filed as us6000e3w5). Read Mon, Oct 5, 2026, 6:35 AM UTC.