California earthquakes

M2.5 earthquake 4 km NW of Round Valley, California

A magnitude 2.5 earthquake struck 4 km NW of Round Valley, California on Mon, Nov 26, 1984, 12:52 AM PST (08:52 UTC), 5 km (3 mi) below the surface.

A larger quake followed: M2.6 6 km SSW of Swall Meadows, 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
2.5 (md), micro
Local time
UTC
1984-11-26 08:52:23 UTC
Depth
5.4 km (3.4 mi), shallow
Epicenter
37.448° N, 118.626° 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 0.5 km horizontally, 1.9 km in depth
Magnitude uncertainty
±0.24
Depth from
From location
Station coverage gap
158°
Stations used
25

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 nc34921 (also filed as ci55022). Read Tue, Sep 22, 2026, 6:36 AM UTC.