Oregon earthquakes

M4.3 earthquake 25 km SW of Chiloquin, Oregon

A magnitude 4.3 earthquake struck 25 km SW of Chiloquin, Oregon on Mon, Sep 20, 1993, 11:14 PM PDT (06:14 UTC), -2 km (-1 mi) below the surface.

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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
4.3 (md), light
Local time
UTC
1993-09-21 06:14:43 UTC
Depth
-1.7 km (-1.0 mi), shallow
Epicenter
42.388° N, 122.051° 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 0.1 km horizontally, 1.3 km in depth
Magnitude uncertainty
±0.04
Depth from
Operator assigned
Station coverage gap
128°
Stations used
25

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 184 in the 60 days after this one and 15 in the 30 days before it.

After

The first 60 of 184.

Before

Earthquakes todayOregon earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10313858 (also filed as usp00060r6). Read Tue, Sep 22, 2026, 11:28 PM UTC.