Washington earthquakes

M3.0 earthquake 0 km SSW of Bellevue, Washington

A magnitude 3.0 earthquake struck 0 km SSW of Bellevue, Washington on Wed, Mar 20, 1985, 6:39 PM PST (02:39 UTC), 7 km (5 mi) below the surface.

A larger quake followed: M3.3 6 km WSW of Lake Cavanaugh, 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
3.0 (md), minor
Local time
UTC
1985-03-21 02:39:21 UTC
Depth
7.3 km (4.6 mi), shallow
Epicenter
47.608° N, 122.203° W
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 0.3 km horizontally, 0.4 km in depth
Magnitude uncertainty
±0.05
Depth from
From location
Station coverage gap
46°
Stations used
33

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 38 in the 60 days after this one and 16 in the 30 days before it.

After

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10188983 (also filed as usp0002d2y). Read Tue, Sep 22, 2026, 6:15 AM UTC.