Washington earthquakes

M2.6 earthquake 13 km NNW of Onalaska, Washington

A magnitude 2.6 earthquake struck 13 km NNW of Onalaska, Washington on Wed, Mar 29, 2006, 2:32 PM PST (22:32 UTC), -1 km (0 mi) below the surface.

A larger quake followed: M3.3 36 km NNE of Amboy, 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
2.6 (Md, duration), micro
Magnitude from
Pacific Northwest Seismic Network
Local time
UTC
2006-03-29 22:32:44 UTC
Depth
-0.8 km (-0.5 mi), shallow
Epicenter
46.697° N, 122.757° 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 0.0 km horizontally, 0.1 km in depth
Magnitude uncertainty
±0.03
Depth from
Operator assigned
Station coverage gap
83°
Stations used
10

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 118 in the 60 days after this one and 37 in the 30 days before it.

After

The first 60 of 118.

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10693213. Read Sat, Oct 3, 2026, 12:29 AM UTC.