Oregon earthquakes

M2.5 earthquake 1 km SSE of Beaverton, Oregon

A magnitude 2.5 earthquake struck 1 km SSE of Beaverton, Oregon on Mon, Dec 10, 1984, 10:34 PM PST (06:34 UTC), 25 km (15 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
2.5 (md), micro
Local time
UTC
1984-12-11 06:34:49 UTC
Depth
24.9 km (15.5 mi), shallow
Epicenter
45.478° N, 122.795° 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 1.2 km horizontally, 0.6 km in depth
Magnitude uncertainty
±0.07
Depth from
From location
Station coverage gap
200°, poorly surrounded by stations
Stations used
38

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 7 in the 60 days after this one and 4 in the 30 days before it.

After

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10182053. Read Tue, Sep 22, 2026, 9:20 PM UTC.