M2.7 earthquake 17 km NE of Phillipsville, California

A magnitude 2.7 earthquake struck 17 km NE of Phillipsville, California on Fri, Oct 30, 1987, 4:55 AM PST (12:55 UTC), 4 km (2 mi) below the surface.

A larger quake followed: M3.1 11 km ENE of Cleone, 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: 55 in the 60 days after this one and 8 in the 30 days before it.

From the USGS Earthquake Hazards Program and its partner networks, event nc10085447. Read Wed, Sep 23, 2026, 4:22 AM UTC.