M2.8 earthquake 10km ESE of Willits, CA

A magnitude 2.8 earthquake struck 10km ESE of Willits, CA on Thu, Dec 10, 2020, 11:24 PM PST (07:24 UTC), 7 km (4 mi) below the surface.

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

Map

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

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
2.76	ML, local (Richter)	Northern California Seismic System	Preferred · Final · ±0.22 · 26 stations
2.7	ML, local (Richter)	USGS National Earthquake Information Center	Reviewed · ±0.045 · 66 stations

72 people reported to the USGS what they felt; the strongest reported shaking was IV, light shaking.

Reviewed by a seismologist.

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

Within 100 km, magnitude 1.5 and up: 163 in the 60 days after this one and 116 in the 30 days before it.

The first 60 of 163.

From the USGS Earthquake Hazards Program and its partner networks, event nc73496370 (also filed as us7000cq5r). Read Sun, Oct 4, 2026, 9:57 PM UTC.