Oregon earthquakes

M3.0 earthquake 27 km SW of Chiloquin, Oregon

A magnitude 3.0 earthquake struck 27 km SW of Chiloquin, Oregon on Mon, Sep 20, 1993, 11:54 PM PDT (06:54 UTC), 4 km (2 mi) below the surface.

A larger quake followed: M3.1 15 km NW of Klamath Falls, Oregon. This one was a foreshock.

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Map

Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude
3.0 (md), minor
Local time
UTC
1993-09-21 06:54:14 UTC
Depth
3.7 km (2.3 mi), shallow
Epicenter
42.396° N, 122.087° W
Region
Oregon
Tsunami flag
No
Status
Reviewed by a seismologist

Did you feel it?

No one has reported feeling this quake to the USGS.

How well it is located

Reviewed by a seismologist.

Location uncertainty
About 2.5 km horizontally, 5.1 km in depth
Magnitude uncertainty
±0.07
Depth from
Operator assigned
Station coverage gap
126°
Stations used
9

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Nearby

Within 100 km, magnitude 1.5 and up: 179 in the 60 days after this one and 20 in the 30 days before it.

After

The first 60 of 179.

Before

Earthquakes todayOregon earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10313883 (also filed as usp00060rd). Read Tue, Sep 22, 2026, 2:16 PM UTC.