M1.7 earthquake 19 km NNE of Upper Lake, California

A magnitude 1.7 earthquake struck 19 km NNE of Upper Lake, California on Fri, Sep 3, 1982, 7:18 PM PDT (02:18 UTC), 13 km (8 mi) below the surface.

A larger quake followed: M1.7 17 km E of Lower Lake, 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: 120 in the 60 days after this one and 51 in the 30 days before it.

The first 60 of 120.

From the USGS Earthquake Hazards Program and its partner networks, event nc1078506. Read Wed, Sep 23, 2026, 3:21 AM UTC.