M2.7 earthquake 4km E of Mammoth Lakes, CA

A magnitude 2.7 earthquake struck 4km E of Mammoth Lakes, CA on Tue, Mar 24, 2020, 11:10 AM PDT (18:10 UTC), 6 km (4 mi) below the surface.

A larger quake followed: M5.2 30km SE of Bodie, 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
2.66	Md, duration	Northern California Seismic System	Preferred · Final · ±0.437 · 24 stations
2.1	ML, local (Richter)	USGS National Earthquake Information Center	Reviewed · ±0.042 · 76 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: at least 200 in the 60 days after this one and 84 in the 30 days before it.

The first 60 of at least 200.

From the USGS Earthquake Hazards Program and its partner networks, event nc73358430 (also filed as us70008f7f). Read Fri, Oct 2, 2026, 7:02 PM UTC.