M2.9 earthquake 22km NNE of Barstow, CA

A magnitude 2.9 earthquake struck 22km NNE of Barstow, CA on Wed, Apr 7, 2021, 1:41 PM PDT (20:41 UTC), 2 km (1 mi) below the surface.

A larger quake followed: M3.6 12km ENE of Ridgecrest, 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
2.91	ML, local (Richter)	Southern California Seismic Network	Preferred · Final · ±0.137 · 206 stations
2.6	ML, local (Richter)	USGS National Earthquake Information Center	Reviewed · ±0.036 · 103 stations

2 people 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: 91 in the 60 days after this one and 60 in the 30 days before it.

The first 60 of 91.

From the USGS Earthquake Hazards Program and its partner networks, event ci39842512 (also filed as us6000dzub). Read Sun, Oct 4, 2026, 6:28 AM UTC.