California earthquakes

M2.7 earthquake 33km SW of Tecopa, CA

A magnitude 2.7 earthquake struck 33km SW of Tecopa, CA on Mon, Aug 2, 2021, 6:44 PM PDT (01:44 UTC), 3 km (2 mi) below the surface.

A larger quake followed: M3.4 19km E of Ridgecrest, CA. This one was a foreshock.

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Map

Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude: 2.7 (ML, local (Richter)), micro
Magnitude from: Southern California Seismic Network
Local time: Mon, Aug 2, 2021, 6:44 PM PDT
UTC: 2021-08-03 01:44:17 UTC
Depth: 3.0 km (1.9 mi), shallow
Epicenter: 35.681° N, 116.528° W
Region: California
Tsunami flag: No
Status: Reviewed by a seismologist

Magnitude estimates

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
2.72	ML, local (Richter)	Southern California Seismic Network	Preferred · Final · ±0.126 · 87 stations
2.4	ML, local (Richter)	USGS National Earthquake Information Center	Reviewed · ±0.034 · 112 stations
2.6	ML, local (Richter)	Nevada Seismological Laboratory	Reviewed · ±0.79 · 7 stations

Did you feel it?

No one has reported feeling this quake to the USGS.

How well it is located

Reviewed by a seismologist.

Location uncertainty: About 0.2 km horizontally, 1.1 km in depth
Magnitude uncertainty: ±0.13
Depth from: From location
Station coverage gap: 60°
Stations used: 17

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Nearby

Within 100 km, magnitude 1.5 and up: 68 in the 60 days after this one and 39 in the 30 days before it.

After

The first 60 of 68.

Before

Earthquakes today California earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ci39762183 (also filed as nn00817449, us6000f1qq). Read Sun, Oct 4, 2026, 12:22 PM UTC.