M2.1 earthquake 20 km NW of Klamath Falls, Oregon

A magnitude 2.1 earthquake struck 20 km NW of Klamath Falls, Oregon on Tue, Sep 21, 1993, 12:39 AM PDT (07:39 UTC), -2 km (-1 mi) below the surface.

A larger quake followed: M2.4 20 km SW of Chiloquin, Oregon. 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: 170 in the 60 days after this one and 29 in the 30 days before it.

The first 60 of 170.

From the USGS Earthquake Hazards Program and its partner networks, event uw10313928. Read Tue, Sep 22, 2026, 4:50 PM UTC.