Oregon earthquakes

M5.5 earthquake 226 km W of Langlois, Oregon

A magnitude 5.5 earthquake struck 226 km W of Langlois, Oregon on Mon, Jun 29, 2026, 4:35 AM PDT (11:35 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: 5.5 (mww), moderate
Local time: Mon, Jun 29, 2026, 4:35 AM PDT
UTC: 2026-06-29 11:35:32 UTC
Depth: 10.0 km (6.2 mi), shallow
Epicenter: 43.307° N, 127.183° W
Region: Oregon
Felt reports: 22
Strongest shaking: I, not felt shaking
PAGER alert: Green
Tsunami flag: No
Status: Reviewed by a seismologist

Shaking

The USGS ShakeMap: shaking estimated from seismic stations and the quake’s size, on the Modified Mercalli intensity scale.

Map: Automatic

USGS ShakeMap: estimated shaking intensity around the epicenter — Estimated shaking intensity. Map: USGS ShakeMap.

Did you feel it?

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

Estimated impact

The USGS PAGER system estimates deaths and economic losses from the shaking and the population and buildings exposed to it.

Alert level: Green: little or no damage or loss of life expected

Deaths: estimated chance of each range
Range	Chance
Under 1	90%
1 to 10	9%
10 to 100	Under 1%
100 to 1,000	Under 1%
1,000 to 10,000	Under 1%
10,000 to 100,000	Under 1%
100,000 to 10,000,000	Under 1%

Economic losses: estimated chance of each range
Range, million USD	Chance
Under 1	90%
1 to 10	9%
10 to 100	Under 1%
100 to 1,000	Under 1%
1,000 to 10,000	Under 1%
10,000 to 100,000	Under 1%
100,000 to 10,000,000	Under 1%

Aftershock forecast

The chance of at least one aftershock this large or larger, from the USGS operational aftershock forecast, issued Mon, Sep 28, 2026, 11:35 AM UTC. The USGS updates it as the sequence unfolds.

Within	M3+	M4+	M5+	M6+	M7+
1 day	Under 1%	Under 1%	Under 1%	Under 1%	Under 1%
1 week	4%	Under 1%	Under 1%	Under 1%	Under 1%
1 month	13%	1%	Under 1%	Under 1%	Under 1%
1 year	48%	7%	Under 1%	Under 1%	Under 1%

In the coming week the USGS expects about 0 aftershocks of magnitude 3 or more, and most likely between 0 and 1.

Fault motion and ground failure

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

Faulting: Strike-slip
Moment magnitude: 5.5 Mww
Nodal plane 1: Strike 132°, dip 79°, rake -177°
Nodal plane 2: Strike 42°, dip 87°, rake -11°

How well it is located

Reviewed by a seismologist.

Location uncertainty: About 6.9 km horizontally, 1.8 km in depth
Magnitude uncertainty: ±0.03
Depth from: Operator assigned
Station coverage gap: 100°
Stations used: 103

Nearest places

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

Nearby

Within 100 km, magnitude 2.5 and up: 13 in the 60 days after this one and 6 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 us6000t8yt (also filed as atthe5je, usauto6000t8yt). Read Tue, Sep 29, 2026, 11:35 PM UTC.