California earthquakes

M2.0 earthquake 17km NW of New Idria, CA

A magnitude 2.0 earthquake struck 17km NW of New Idria, CA on Wed, Sep 22, 2021, 3:43 PM PDT (22:43 UTC), 4 km (2 mi) below the surface.

A larger quake followed: M4.7 18km NW of San Simeon, 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
2021-09-22 22:43:37 UTC
Depth
3.9 km (2.4 mi), shallow
Epicenter
36.538° N, 120.787° 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 0.3 km horizontally, 0.5 km in depth
Magnitude uncertainty
±0.29
Depth from
From location
Station coverage gap
144°
Stations used
13

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 131 in the 60 days after this one and 58 in the 30 days before it.

After

The first 60 of 131.

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc73628186. Read Sat, Oct 3, 2026, 4:05 PM UTC.