M2.2 earthquake 23 km W of Winthrop, Washington

A magnitude 2.2 earthquake struck 23 km W of Winthrop, Washington on Sun, Sep 24, 1989, 11:29 PM PDT (06:29 UTC), -1 km (0 mi) below the surface.

A larger quake followed: M2.7 4 km NW of Waterville, 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: 8 in the 60 days after this one and 3 in the 30 days before it.

From the USGS Earthquake Hazards Program and its partner networks, event uw10250758. Read Fri, Oct 2, 2026, 6:02 AM UTC.