M1.7 earthquake 18km E of Coso Junction, CA

A magnitude 1.7 earthquake struck 18km E of Coso Junction, CA on Fri, Apr 23, 1982, 12:18 PM PST (20:18 UTC), 3 km (2 mi) below the surface.

A larger quake followed: M3.8 15km NNE of Inyokern, CA. This one was a foreshock.

Map

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

No one has reported feeling this quake to the USGS.

Reviewed by a seismologist.

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

Within 100 km, magnitude 1.5 and up: 199 in the 60 days after this one and 168 in the 30 days before it.

The first 60 of 199.

From the USGS Earthquake Hazards Program and its partner networks, event ci529347. Read Sun, Oct 4, 2026, 4:27 PM UTC.