Washington earthquakes

M2.3 earthquake 10 km NW of Friday Harbor, Washington

A magnitude 2.3 earthquake struck 10 km NW of Friday Harbor, Washington on Thu, Apr 10, 1986, 12:23 PM PST (20:23 UTC), 12 km (7 mi) below the surface.

A larger quake followed: M3.0 5 km ENE of Ferndale, Washington. This one was a foreshock.

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Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude: 2.3 (Md, duration), micro
Magnitude from: Pacific Northwest Seismic Network
Local time: Thu, Apr 10, 1986, 12:23 PM PST
UTC: 1986-04-10 20:23:37 UTC
Depth: 11.9 km (7.4 mi), shallow
Epicenter: 48.613° N, 123.100° W
Region: Washington
Tsunami flag: No
Status: Reviewed by a seismologist

Did you feel it?

No one has reported feeling this quake to the USGS.

How well it is located

Reviewed by a seismologist.

Location uncertainty: About 0.2 km horizontally, 0.3 km in depth
Magnitude uncertainty: ±0.07
Depth from: Operator assigned
Station coverage gap: 177°
Stations used: 19

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Nearby

Within 100 km, magnitude 1.5 and up: 8 in the 60 days after this one and 3 in the 30 days before it.

After

Before

Earthquakes today Washington earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10203498. Read Sun, Oct 4, 2026, 9:19 PM UTC.