M2.2 earthquake 36 km NNE of Amboy, Washington

A magnitude 2.2 earthquake struck 36 km NNE of Amboy, Washington on Thu, Sep 23, 2004, 8:33 PM PDT (03:33 UTC), -1 km (-1 mi) below the surface.

A larger quake followed: M3.9 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: 200 in the 60 days after this one and 9 in the 30 days before it.

The first 60 of 200.

From the USGS Earthquake Hazards Program and its partner networks, event uw10628743. Read Fri, Oct 2, 2026, 1:55 PM UTC.