California earthquakes

M2.6 earthquake 23km SW of Mount Hebron, CA

A magnitude 2.6 earthquake struck 23km SW of Mount Hebron, CA on Mon, Feb 8, 2021, 6:11 AM PST (14:11 UTC), 16 km (10 mi) below the surface.

A larger quake followed: M2.8 25km NNW of Shasta Lake, 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: Mon, Feb 8, 2021, 6:11 AM PST
UTC: 2021-02-08 14:11:55 UTC
Depth: 15.5 km (9.6 mi), shallow
Epicenter: 41.635° N, 122.195° 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
2.62	Md, duration	Northern California Seismic System	Preferred · Final · ±0.168 · 26 stations
2.4	ML, local (Richter)	USGS National Earthquake Information Center	Reviewed · ±0.074 · 24 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 0.4 km horizontally, 0.9 km in depth
Magnitude uncertainty: ±0.17
Depth from: From location
Station coverage gap: 98°
Stations used: 25

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 9 in the 60 days after this one and 3 in the 30 days before it.

After

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc73520291 (also filed as uw61712496, us6000dfl4). Read Sun, Oct 4, 2026, 4:48 AM UTC.