California earthquakes

M2.0 earthquake 11km ENE of Hamilton Branch, CA

A magnitude 2.0 earthquake struck 11km ENE of Hamilton Branch, CA on Tue, Dec 12, 2017, 8:56 AM PST (16:56 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M3.0 5km NW of Honey 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
2.0 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
2017-12-12 16:56:13 UTC
Depth
10.4 km (6.5 mi), shallow
Epicenter
40.307° N, 120.979° W
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.ScaleComputed byNotes
1.99Md, durationNorthern California Seismic SystemPreferred · Final · ±0.223 · 13 stations
1.7ML, local (Richter)Nevada Seismological LaboratoryReviewed · ±0.3 · 4 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 0.6 km horizontally, 3.0 km in depth
Magnitude uncertainty
±0.22
Depth from
From location
Station coverage gap
101°
Stations used
17

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 34 in the 60 days after this one and 17 in the 30 days before it.

After

Before

Earthquakes todayCalifornia earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc72939021 (also filed as nn00615139). Read Mon, Oct 5, 2026, 1:31 PM UTC.