M2.8 earthquake 5km WSW of Morongo Valley, CA

A magnitude 2.8 earthquake struck 5km WSW of Morongo Valley, CA on Wed, May 5, 2021, 3:14 PM PDT (22:14 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M3.6 4km NNW of Yucca 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
2.78	ML, local (Richter)	Southern California Seismic Network	Preferred · Final · ±0.157 · 157 stations
2.7	ML, local (Richter)	USGS National Earthquake Information Center	Reviewed · ±0.056 · 42 stations

22 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: 146 in the 60 days after this one and 81 in the 30 days before it.

The first 60 of 146.

From the USGS Earthquake Hazards Program and its partner networks, event ci39642223 (also filed as us7000e0h2). Read Sat, Oct 3, 2026, 8:17 PM UTC.