California earthquakes

M2.6 earthquake 0km W of Lake Davis, CA

A magnitude 2.6 earthquake struck 0km W of Lake Davis, CA on Thu, May 27, 2021, 5:27 PM PDT (00:27 UTC), 3 km (2 mi) below the surface.

A larger quake followed: M4.2 10km SE of Dollar Point, 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: 2.6 (Md, duration), micro
Magnitude from: Northern California Seismic System
Local time: Thu, May 27, 2021, 5:27 PM PDT
UTC: 2021-05-28 00:27:06 UTC
Depth: 3.0 km (1.9 mi), shallow
Epicenter: 39.869° N, 120.478° W
Region: California
Felt reports: 3
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
2.62	Md, duration	Northern California Seismic System	Preferred · Final · ±0.122 · 34 stations
2.3	ML, local (Richter)	USGS National Earthquake Information Center	Reviewed · ±0.047 · 59 stations
2.5	ML, local (Richter)	Nevada Seismological Laboratory	Reviewed · ±0.11 · 9 stations

Did you feel it?

3 people reported to the USGS what they felt; the strongest reported shaking was III, weak shaking.

How well it is located

Reviewed by a seismologist.

Location uncertainty: About 0.3 km horizontally, 0.8 km in depth
Magnitude uncertainty: ±0.12
Depth from: From location
Station coverage gap: 115°
Stations used: 14

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 50 in the 60 days after this one and 45 in the 30 days before it.

After

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc73566341 (also filed as nn00808273, us6000efba). Read Sat, Oct 3, 2026, 10:36 AM UTC.