California earthquakes

M2.2 earthquake 15 km NE of Redcrest, California

A magnitude 2.2 earthquake struck 15 km NE of Redcrest, California on Mon, Sep 12, 1983, 7:18 PM PDT (02:18 UTC), 24 km (15 mi) below the surface.

A larger quake followed: M4.1 1 km NE of Ferndale, 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
2.2 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
1983-09-13 02:18:49 UTC
Depth
23.6 km (14.7 mi), shallow
Epicenter
40.517° N, 123.843° 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 0.4 km horizontally, 0.7 km in depth
Magnitude uncertainty
±0.08
Depth from
From location
Station coverage gap
87°
Stations used
16

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 106 in the 60 days after this one and 169 in the 30 days before it.

After

The first 60 of 106.

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1102628. Read Sat, Oct 3, 2026, 6:17 AM UTC.