Washington earthquakes

M1.8 earthquake 4 km SW of Mirrormont, Washington

A magnitude 1.8 earthquake struck 4 km SW of Mirrormont, Washington on Wed, Aug 31, 2005, 8:16 AM PDT (15:16 UTC), 20 km (13 mi) below the surface.

A larger quake followed: M2.9 4 km WSW of Quilcene, Washington. This one was a foreshock.

Mirrormont forecastMore in Washington

Map

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

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The earthquake

Magnitude
1.8 (Md, duration), micro
Magnitude from
Pacific Northwest Seismic Network
Local time
UTC
2005-08-31 15:16:22 UTC
Depth
20.4 km (12.6 mi), shallow
Epicenter
47.433° N, 122.031° 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 0.8 km horizontally, 0.8 km in depth
Magnitude uncertainty
±0.03
Depth from
From location
Station coverage gap
84°
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: 16 in the 60 days after this one and 12 in the 30 days before it.

After

  1. 1.50 km SW of Maple Valley, Washington · 7701 days ago · 4 km deep · 5 km away
  2. 1.81 km W of Maple Valley, Washington · 7701 days ago · 7 km deep · 5 km away
  3. 1.52 km W of Maple Valley, Washington · 7700 days ago · 7 km deep · 6 km away
  4. 1.84 km E of Dash Point, Washington · 7700 days ago · 28 km deep · 28 km away
  5. 1.82 km ENE of Granite Falls, Washington · 7696 days ago · -1 km deep · 73 km away
  6. 1.62 km WSW of Ronald, Washington · 7695 days ago · 9 km deep · 77 km away
  7. 1.51 km NNW of Maple Valley, Washington · 7695 days ago · 7 km deep · 4 km away
  8. 1.73 km E of Dash Point, Washington · 7694 days ago · 28 km deep · 29 km away
  9. 1.72 km SW of Erlands Point-Kitsap Lake, Washington · 7691 days ago · 19 km deep · 55 km away
  10. 2.94 km WSW of Quilcene, Washington · 7690 days ago · 49 km deep · 79 km away
  11. 1.83 km E of Dash Point, Washington · 7685 days ago · 22 km deep · 29 km away
  12. 1.512 km NE of Snoqualmie, Washington · 7681 days ago · 6 km deep · 31 km away
  13. 1.65 km WSW of Snoqualmie, Washington · 7679 days ago · 8 km deep · 13 km away
  14. 2.617 km NW of Leavenworth, Washington · 7675 days ago · 4 km deep · 93 km away
  15. 2.3Washington · 7661 days ago · 17 km deep · 25 km away
  16. 1.89 km W of Easton, Washington · 7655 days ago · 10 km deep · 59 km away

Before

  1. 1.73 km SSE of Kingsgate, Washington · 7702 days ago · 2 km deep · 31 km away
  2. 2.02 km ENE of Granite Falls, Washington · 7704 days ago · -1 km deep · 74 km away
  3. 2.17 km ENE of Quilcene, Washington · 7704 days ago · 22 km deep · 73 km away
  4. 2.56 km WSW of Darrington, Washington · 7707 days ago · 8 km deep · 92 km away
  5. 2.16 km NE of Duvall, Washington · 7707 days ago · 20 km deep · 39 km away
  6. 1.59 km NW of Morton, Washington · 7710 days ago · 12 km deep · 95 km away
  7. 2.17 km ENE of Lake Roesiger, WA · 7711 days ago · 12 km deep · 66 km away
  8. 2.024 km ENE of Ashford, Washington · 7717 days ago · -2 km deep · 71 km away
  9. 1.55 km SW of Coupeville, Washington · 7723 days ago · 16 km deep · 100 km away
  10. 1.70 km SSW of Oso, Washington · 7725 days ago · 13 km deep · 93 km away
  11. 1.65 km SE of Oso, Washington · 7728 days ago · 13 km deep · 90 km away
  12. 1.53 km W of Federal Way, Washington · 7728 days ago · 19 km deep · 28 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10687693. Read Fri, Oct 2, 2026, 6:35 PM UTC.