M2.8 earthquake 13km W of Ludlow, CA

A magnitude 2.8 earthquake struck 13km W of Ludlow, CA on Mon, Jul 5, 2021, 4:01 PM PDT (23:01 UTC), 4 km (2 mi) below the surface.

A larger quake followed: M3.1 3km 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
2.76	ML, local (Richter)	Southern California Seismic Network	Preferred · Final · ±0.15 · 159 stations
2.6	ML, local (Richter)	USGS National Earthquake Information Center	Reviewed · ±0.033 · 120 stations

4 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: 49 in the 60 days after this one and 21 in the 30 days before it.

From the USGS Earthquake Hazards Program and its partner networks, event ci39730167 (also filed as us7000eiys). Read Sun, Oct 4, 2026, 4:41 PM UTC.