California earthquakes

M1.9 earthquake 2 km SSE of Round Valley, California

A magnitude 1.9 earthquake struck 2 km SSE of Round Valley, California on Thu, Aug 22, 1985, 3:01 AM PDT (10:01 UTC), 6 km (4 mi) below the surface.

A larger quake followed: M2.4 2 km SSE of Round Valley, California. This one was a foreshock.

West Bishop forecastMore in California

Map

Where this earthquake was located, with the others nearby. Select one for its page.

Open the live map with earthquakes

The earthquake

Magnitude
1.9 (md), micro
Local time
UTC
1985-08-22 10:01:57 UTC
Depth
6.4 km (4.0 mi), shallow
Epicenter
37.401° N, 118.575° 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, 0.8 km in depth
Magnitude uncertainty
±0.30
Depth from
From location
Station coverage gap
80°
Stations used
23

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 150 in the 60 days after this one and 48 in the 30 days before it.

After

The first 60 of 150.

Before

Earthquakes todayCalifornia earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc53583 (also filed as ci110377). Read Tue, Sep 22, 2026, 11:02 AM UTC.