Washington earthquakes

M2.0 earthquake 38 km NNE of Amboy, Washington

A magnitude 2.0 earthquake struck 38 km NNE of Amboy, Washington on Thu, May 23, 1985, 11:32 AM PDT (18:32 UTC), -2 km (-1 mi) below the surface.

A larger quake followed: M2.7 37 km NNE of Amboy, Washington. This one was a foreshock.

Amboy forecastMore in Washington

Map

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

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The earthquake

Magnitude
2.0 (md), micro
Local time
UTC
1985-05-23 18:32:56 UTC
Depth
-1.6 km (-1.0 mi), shallow
Epicenter
46.203° N, 122.188° W
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 0.0 km horizontally, 0.6 km in depth
Magnitude uncertainty
±0.05
Depth from
Operator assigned
Station coverage gap
95°
Stations used
10

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 199 in the 60 days after this one and 0 in the 30 days before it.

After

The first 60 of 199.

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10194348. Read Tue, Sep 22, 2026, 8:41 AM UTC.