Washington earthquakes

M2.7 earthquake 38 km NNE of Amboy, Washington

A magnitude 2.7 earthquake struck 38 km NNE of Amboy, Washington on Wed, Feb 4, 1981, 6:21 AM PST (14:21 UTC), 1 km (1 mi) below the surface.

A larger quake followed: M2.9 Washington. This one was a foreshock.

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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
2.7 (md), micro
Local time
UTC
1981-02-04 14:21:56 UTC
Depth
1.4 km (0.9 mi), shallow
Epicenter
46.199° N, 122.179° 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 0.1 km horizontally, 0.1 km in depth
Magnitude uncertainty
±0.20
Depth from
From location
Station coverage gap
193°, poorly surrounded by stations
Stations used
5

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 132 in the 60 days after this one and 11 in the 30 days before it.

After

The first 60 of 132.

Before

Earthquakes todayWashington earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10096953. Read Mon, Sep 21, 2026, 7:31 PM UTC.