M2.0 earthquake 38 km S of Morton, Washington

A magnitude 2.0 earthquake struck 38 km S of Morton, Washington on Tue, Mar 18, 1980, 2:31 AM PST (10:31 UTC), -1 km (0 mi) below the surface.

A larger quake followed: M3.9 38 km NNE of Amboy, 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 0 in the 30 days before it.

The first 60 of 198.

From the USGS Earthquake Hazards Program and its partner networks, event uw10075938. Read Wed, Sep 23, 2026, 2:36 AM UTC.