Oregon earthquakes

M4.8 earthquake 163 km W of Langlois, Oregon

A magnitude 4.8 earthquake struck 163 km W of Langlois, Oregon on Sun, Oct 24, 2021, 5:11 AM PDT (12:11 UTC), 10 km (6 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: 4.8 (Mwr, regional moment), light
Magnitude from: USGS National Earthquake Information Center
Local time: Sun, Oct 24, 2021, 5:11 AM PDT
UTC: 2021-10-24 12:11:40 UTC
Depth: 10.0 km (6.2 mi), shallow
Epicenter: 43.163° N, 126.431° W
Region: Oregon
Felt reports: 12
Tsunami flag: No
Status: Reviewed by a seismologist

Magnitude estimates

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
4.8	Mwr, regional moment	USGS National Earthquake Information Center	Preferred · Reviewed · ±0.033 · 87 stations
4.98	Mw, moment	ISC-GEM global catalog	Final · ±0.1

Did you feel it?

12 people reported to the USGS what they felt; the strongest reported shaking was III, weak shaking.

Fault motion and ground failure

How the rock slipped, from the moment tensor, and the USGS estimate of landslides and liquefaction.

Faulting: Oblique reverse
Moment magnitude: 4.8 Mwr
Nodal plane 1: Strike 113°, dip 66°, rake 149°
Nodal plane 2: Strike 216°, dip 62°, rake 28°

How well it is located

Reviewed by a seismologist.

Location uncertainty: About 4.8 km horizontally, 2.0 km in depth
Magnitude uncertainty: ±0.03
Depth from: Operator assigned
Station coverage gap: 189°, poorly surrounded by stations
Stations used: 83

Nearest places

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

Nearby

Within 100 km, magnitude 1.8 and up: 5 in the 60 days after this one and 4 in the 30 days before it.

After

Before

Earthquakes today Oregon earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000fx7p (also filed as iscgem621238112). Read Sun, Oct 4, 2026, 11:20 PM UTC.