M1.9 earthquake 12 km N of Brooktrails, California

A magnitude 1.9 earthquake struck 12 km N of Brooktrails, California on Fri, Sep 10, 1982, 5:12 PM PDT (00:12 UTC), 7 km (5 mi) below the surface.

A larger quake followed: M3.3 near the coast of Northern California. 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: 89 in the 60 days after this one and 43 in the 30 days before it.

The first 60 of 89.

From the USGS Earthquake Hazards Program and its partner networks, event nc1078785. Read Tue, Sep 29, 2026, 3:25 PM UTC.