California earthquakes

M1.7 earthquake 9km ESE of Willits, CA

A magnitude 1.7 earthquake struck 9km ESE of Willits, CA on Fri, Dec 11, 2020, 12:08 AM PST (08:08 UTC), 5 km (3 mi) below the surface.

A larger quake followed: M3.6 9km WNW of Cobb, 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
1.7 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
2020-12-11 08:08:30 UTC
Depth
5.3 km (3.3 mi), shallow
Epicenter
39.370° N, 123.259° W
Tsunami flag
No
Status
Reviewed by a seismologist

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, 0.6 km in depth
Magnitude uncertainty
±0.26
Depth from
From location
Station coverage gap
92°
Stations used
21

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 161 in the 60 days after this one and 119 in the 30 days before it.

After

The first 60 of 161.

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc73496390. Read Sun, Oct 4, 2026, 7:07 PM UTC.