M2.4 earthquake 18km ESE of Maricopa, CA

A magnitude 2.4 earthquake struck 18km ESE of Maricopa, CA on Fri, Oct 30, 1981, 3:50 AM PST (11:50 UTC), 5 km (3 mi) below the surface.

A larger quake followed: M2.5 7km NW of Castaic, 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: 102 in the 60 days after this one and 23 in the 30 days before it.

The first 60 of 102.

From the USGS Earthquake Hazards Program and its partner networks, event ci526314. Read Tue, Sep 22, 2026, 9:30 PM UTC.