M3.7 earthquake 37 km NNE of Amboy, Washington

A magnitude 3.7 earthquake struck 37 km NNE of Amboy, Washington on Sun, May 18, 1980, 2:23 PM PDT (21:23 UTC), 2 km (1 mi) below the surface.

A larger quake followed: M4.5 37 km S of Morton, Washington. This one was a foreshock.

Map

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

No one has reported feeling this quake to the USGS.

Reviewed by a seismologist.

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

Within 100 km, magnitude 1.5 and up: 198 in the 60 days after this one and at least 200 in the 30 days before it.

The first 60 of 198.

From the USGS Earthquake Hazards Program and its partner networks, event uw10087298. Read Mon, Sep 28, 2026, 9:07 PM UTC.