M2.7 earthquake 37 km NNE of Amboy, Washington

A magnitude 2.7 earthquake struck 37 km NNE of Amboy, Washington on Wed, May 29, 1985, 11:06 PM PDT (06:06 UTC), -1 km (-1 mi) below the surface.

A larger quake followed: M3.0 37 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: 199 in the 60 days after this one and 0 in the 30 days before it.

The first 60 of 199.

From the USGS Earthquake Hazards Program and its partner networks, event uw10207908. Read Tue, Sep 22, 2026, 6:06 AM UTC.