Washington earthquakes

M1.7 earthquake 1 km SSE of Medina, Washington

A magnitude 1.7 earthquake struck 1 km SSE of Medina, Washington on Thu, Mar 21, 1985, 7:11 AM PST (15:11 UTC), 1 km (1 mi) below the surface.

A larger quake followed: M2.7 1 km WSW of Bellevue, Washington. This one was a foreshock.

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Map

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

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The earthquake

Magnitude
1.7 (md), micro
Local time
UTC
1985-03-21 15:11:26 UTC
Depth
1.5 km (0.9 mi), shallow
Epicenter
47.611° N, 122.220° 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 0.9 km horizontally, 1.2 km in depth
Magnitude uncertainty
±0.12
Depth from
From location
Station coverage gap
63°
Stations used
18

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 37 in the 60 days after this one and 17 in the 30 days before it.

After

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10189058. Read Tue, Sep 22, 2026, 9:39 AM UTC.