M3.2 earthquake 28km NE of Indio, CA

A magnitude 3.2 earthquake struck 28km NE of Indio, CA on Tue, Sep 21, 2021, 4:15 AM PDT (11:15 UTC), 5 km (3 mi) below the surface.

A larger quake followed: M3.4 10km NNW of Anza, 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
3.19	ML, local (Richter)	Southern California Seismic Network	Preferred · Final · ±0.133 · 158 stations
3.2	ML, local (Richter)	USGS National Earthquake Information Center	Reviewed · ±0.053 · 46 stations

18 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: 120 in the 60 days after this one and 82 in the 30 days before it.

The first 60 of 120.

From the USGS Earthquake Hazards Program and its partner networks, event ci39814663 (also filed as us7000fd3n). Read Sun, Oct 4, 2026, 8:27 AM UTC.