M1.9 earthquake 13 km S of Bootjack, California

A magnitude 1.9 earthquake struck 13 km S of Bootjack, California on Thu, Oct 15, 1987, 4:00 AM PDT (11:00 UTC), 3 km (2 mi) below the surface.

A larger quake followed: M3.0 8 km SSE of Shaver 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: 137 in the 60 days after this one and 61 in the 30 days before it.

The first 60 of 137.

From the USGS Earthquake Hazards Program and its partner networks, event nc10085331. Read Wed, Sep 30, 2026, 3:14 PM UTC.