M2.7 earthquake 25 km NW of Klamath Falls, OR

A magnitude 2.7 earthquake struck 25 km NW of Klamath Falls, OR on Mon, Sep 20, 1993, 10:40 PM PDT (05:40 UTC), -2 km (-1 mi) below the surface.

A larger quake followed: M6.0 27 km WNW of Klamath Falls, 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: 188 in the 60 days after this one and 11 in the 30 days before it.

The first 60 of 188.

From the USGS Earthquake Hazards Program and its partner networks, event uw10313828 (also filed as usp00060r2). Read Tue, Sep 22, 2026, 9:31 PM UTC.