M1.5 earthquake 11km ESE of Anza, CA

A magnitude 1.5 earthquake struck 11km ESE of Anza, CA on Thu, Oct 24, 2002, 10:23 AM PDT (17:23 UTC), 15 km (9 mi) below the surface.

A larger quake followed: M3.5 14km ENE of Thousand Palms, 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: 195 in the 60 days after this one and 117 in the 30 days before it.

The first 60 of 195.

From the USGS Earthquake Hazards Program and its partner networks, event ci9853445. Read Sun, Oct 4, 2026, 4:41 PM UTC.