Washington earthquakes

M4.0 earthquake 6 km ENE of Deming, Washington

A magnitude 4.0 earthquake struck 6 km ENE of Deming, Washington on Wed, Nov 23, 2005, 12:53 PM PST (20:53 UTC), -1 km (0 mi) below the surface.

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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: 4.0 (Md, duration), light
Magnitude from: Pacific Northwest Seismic Network
Local time: Wed, Nov 23, 2005, 12:53 PM PST
UTC: 2005-11-23 20:53:15 UTC
Depth: -0.7 km (-0.4 mi), shallow
Epicenter: 48.854° N, 122.138° W
Region: Washington
Felt reports: 112
Tsunami flag: No
Status: Reviewed by a seismologist

Magnitude estimates

Different scales measure different things and differ by a few tenths. The USGS marks one as preferred, and it is the one this page uses.

Mag.	Scale	Computed by	Notes
4.0	Md, duration	Pacific Northwest Seismic Network	Preferred · Final · ±0.03 · 6 stations
4.0	Md, duration	USGS National Earthquake Information Center	Reviewed

What happened

The USGS’s account of the effects of this earthquake.

Felt (V) at Deming; (IV) at Maple Falls; (III) at Bellingham, Everson and Sumas. Felt at Anacortes, Ferndale, Mount Vernon, Sedro Woolley and Seattle. Also felt at Abbotsford, Chilliwack, Maple Ridge, Mission and Surrey, British Columbia.

From the USGS event page for uw10684038. U.S. Geological Survey text and figures are in the public domain.

Did you feel it?

112 people reported to the USGS what they felt; the strongest reported shaking was V, moderate shaking.

Fault motion and ground failure

How the rock slipped, from the moment tensor, and the USGS estimate of landslides and liquefaction.

Faulting: Reverse (thrust)
Nodal plane 1: Strike 73°, dip 24°, rake 81°
Nodal plane 2: Strike 263°, dip 66°, rake 94°

How well it is located

Reviewed by a seismologist.

Location uncertainty: About 0.1 km horizontally, 0.2 km in depth
Magnitude uncertainty: ±0.03
Depth from: Operator assigned
Station coverage gap: 106°
Stations used: 30

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 11 in the 60 days after this one and 7 in the 30 days before it.

After

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10684038 (also filed as usp000e4sm, uw11232053). Read Fri, Oct 2, 2026, 11:01 PM UTC.