M2.5 earthquake 6km SSW of Redlands, CA

A magnitude 2.5 earthquake struck 6km SSW of Redlands, CA on Thu, Oct 22, 1981, 8:50 PM PDT (03:50 UTC), 12 km (8 mi) below the surface.

A larger quake followed: M2.7 9km S of Littlerock, 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: 108 in the 60 days after this one and 27 in the 30 days before it.

The first 60 of 108.

From the USGS Earthquake Hazards Program and its partner networks, event ci525980. Read Tue, Sep 22, 2026, 9:30 AM UTC.