Washington earthquakes

M2.7 earthquake 1 km ESE of Snoqualmie, Washington

A magnitude 2.7 earthquake struck 1 km ESE of Snoqualmie, Washington on Wed, Sep 17, 2008, 3:05 PM PDT (22:05 UTC), 23 km (15 mi) below the surface.

Snoqualmie forecast More in Washington

Map

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

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The earthquake

Magnitude: 2.7 (Md, duration), micro
Magnitude from: Pacific Northwest Seismic Network
Local time: Wed, Sep 17, 2008, 3:05 PM PDT
UTC: 2008-09-17 22:05:19 UTC
Depth: 23.5 km (14.6 mi), shallow
Epicenter: 47.523° N, 121.810° W
Region: Washington
Felt reports: 7
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
2.7	Md, duration	Pacific Northwest Seismic Network	Preferred · Final · ±0.03 · 18 stations
2.7	Md, duration	USGS National Earthquake Information Center	Reviewed

What happened

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

Felt (II) at North Bend and Snoqualmie. Also felt at Sammamish.

From the USGS event page for uw10751608. U.S. Geological Survey text and figures are in the public domain.

Did you feel it?

7 people reported to the USGS what they felt; the strongest reported shaking was IV, light shaking.

How well it is located

Reviewed by a seismologist.

Location uncertainty: About 0.3 km horizontally, 0.3 km in depth
Magnitude uncertainty: ±0.03
Depth from: From location
Station coverage gap: 71°
Stations used: 59

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 30 in the 60 days after this one and 15 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 uw10751608 (also filed as usp000gh8d, uw09172205). Read Mon, Oct 5, 2026, 12:03 PM UTC.