M3.5 earthquake 18 km WNW of Klamath Falls, Oregon

A magnitude 3.5 earthquake struck 18 km WNW of Klamath Falls, Oregon on Mon, Nov 29, 1993, 7:30 PM PST (03:30 UTC), 5 km (3 mi) below the surface.

A larger quake followed: M5.1 20 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.

Different scales measure different things and differ by a few tenths. The USGS marks one as preferred, and it is the one this page uses.

Mag.	Scale	Computed by	Notes
3.5	Md, duration	Pacific Northwest Seismic Network	Preferred · Final · ±0.08 · 1 stations
3.1	mb, body-wave	USGS National Earthquake Information Center	Reviewed · 1 stations

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: 199 in the 60 days after this one and 30 in the 30 days before it.

The first 60 of 199.

From the USGS Earthquake Hazards Program and its partner networks, event uw10335138 (also filed as usp00064ez). Read Sat, Oct 3, 2026, 4:38 PM UTC.