M2.7 earthquake 14 km NNW of Carson, Washington

A magnitude 2.7 earthquake struck 14 km NNW of Carson, Washington on Wed, Aug 27, 1986, 9:34 PM PDT (04:34 UTC), 8 km (5 mi) below the surface.

A larger quake followed: M3.5 17 km ESE of Toledo, 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: 194 in the 60 days after this one and 0 in the 30 days before it.

The first 60 of 194.

From the USGS Earthquake Hazards Program and its partner networks, event uw10212748. Read Mon, Sep 21, 2026, 4:37 PM UTC.