California earthquakes

M1.8 earthquake 9km ESE of Willits, CA

A magnitude 1.8 earthquake struck 9km ESE of Willits, CA on Thu, Dec 10, 2020, 11:25 PM PST (07:25 UTC), 5 km (3 mi) below the surface.

A larger quake followed: M3.6 9km WNW of Cobb, CA. This one was a foreshock.

Willits forecastMore in California

Map

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

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The earthquake

Magnitude
1.8 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
2020-12-11 07:25:33 UTC
Depth
4.8 km (3.0 mi), shallow
Epicenter
39.370° N, 123.261° W
Felt reports
1
Tsunami flag
No
Status
Reviewed by a seismologist

Did you feel it?

1 person reported to the USGS what they felt; the strongest reported shaking was III, weak shaking.

Did You Feel It? map: shaking reported by the public
Shaking reported by the public, by area. Map: USGS Did You Feel It?

How well it is located

Reviewed by a seismologist.

Location uncertainty
About 0.2 km horizontally, 0.7 km in depth
Magnitude uncertainty
±0.15
Depth from
From location
Station coverage gap
108°
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 118 in the 30 days before it.

After

The first 60 of 161.

Before

Earthquakes todayCalifornia earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc73496380. Read Sun, Oct 4, 2026, 4:08 PM UTC.