California earthquakes

M2.0 earthquake 22 km SSW of Three Rocks, California

A magnitude 2.0 earthquake struck 22 km SSW of Three Rocks, California on Sun, Mar 25, 1984, 11:06 PM PST (07:06 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M2.1 24 km NE of Greenfield, California. 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), micro
Local time: Sun, Mar 25, 1984, 11:06 PM PST
UTC: 1984-03-26 07:06:43 UTC
Depth: 10.0 km (6.2 mi), shallow
Epicenter: 36.324° N, 120.515° W
Region: California
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, 0.6 km in depth
Magnitude uncertainty: ±0.12
Depth from: From location
Station coverage gap: 98°
Stations used: 28

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 200 in the 60 days after this one and 0 in the 30 days before it.

After

The first 60 of 200.

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc12287 (also filed as ci34872). Read Tue, Sep 22, 2026, 9:40 PM UTC.