Washington earthquakes

M3.5 earthquake 15 km NE of Ashford, Washington

A magnitude 3.5 earthquake struck 15 km NE of Ashford, Washington on Mon, Jan 28, 1980, 4:41 PM PST (00:41 UTC), 8 km (5 mi) below the surface.

A larger quake followed: M4.9 38 km S of Morton, 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
3.5 (md), minor
Local time
UTC
1980-01-29 00:41:56 UTC
Depth
7.8 km (4.8 mi), shallow
Epicenter
46.861° N, 121.884° 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 0.8 km horizontally, 0.8 km in depth
Magnitude uncertainty
±0.06
Depth from
From location
Station coverage gap
89°
Stations used
21

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 121 in the 60 days after this one and 4 in the 30 days before it.

After

The first 60 of 121.

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10075048. Read Tue, Sep 29, 2026, 5:49 PM UTC.