California earthquakes

M1.9 earthquake 24 km NE of Greenfield, California

A magnitude 1.9 earthquake struck 24 km NE of Greenfield, California on Tue, Mar 2, 1982, 11:48 AM PST (19:48 UTC), 5 km (3 mi) below the surface.

A larger quake followed: M2.2 15 km NW of Parkfield, 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
1.9 (md), micro
Local time
UTC
1982-03-02 19:48:42 UTC
Depth
5.4 km (3.4 mi), shallow
Epicenter
36.477° N, 121.053° 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, 0.6 km in depth
Magnitude uncertainty
±0.19
Depth from
From location
Station coverage gap
70°
Stations used
38

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 122 in the 60 days after this one and 66 in the 30 days before it.

After

The first 60 of 122.

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1072579. Read Tue, Sep 22, 2026, 9:31 PM UTC.