Washington earthquakes

M1.6 earthquake 6 km SW of Lofall, Washington

A magnitude 1.6 earthquake struck 6 km SW of Lofall, Washington on Wed, Aug 25, 1999, 7:34 AM PDT (14:34 UTC), 16 km (10 mi) below the surface.

A larger quake followed: M2.9 Olympic Peninsula, Washington. This one was a foreshock.

Lofall 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
1.6 (md), micro
Local time
UTC
1999-08-25 14:34:55 UTC
Depth
16.3 km (10.1 mi), shallow
Epicenter
47.779° N, 122.723° 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 0.5 km horizontally, 0.8 km in depth
Magnitude uncertainty
±0.05
Depth from
From location
Station coverage gap
115°
Stations used
12

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 23 in the 60 days after this one and 7 in the 30 days before it.

After

  1. 2.08 km NNE of Lake Marcel-Stillwater, Washington · 9897 days ago · 7 km deep · 64 km away
  2. 1.69 km NNE of Lake Marcel-Stillwater, Washington · 9895 days ago · 1 km deep · 65 km away
  3. 1.62 km WNW of Mirrormont, Washington · 9895 days ago · 17 km deep · 62 km away
  4. 2.9Olympic Peninsula, Washington · 9889 days ago · -1 km deep · 43 km away
  5. 1.88 km ENE of Duvall, Washington · 9888 days ago · 6 km deep · 63 km away
  6. 1.53 km S of Lake Roesiger, Washington · 9888 days ago · 11 km deep · 62 km away
  7. 1.88 km SSW of Sultan, Washington · 9886 days ago · 7 km deep · 64 km away
  8. 2.85 km SSW of Shelton, Washington · 9886 days ago · 46 km deep · 74 km away
  9. 1.73 km S of Monroe, Washington · 9886 days ago · 2 km deep · 57 km away
  10. 1.633 km N of Amanda Park, Washington · 9879 days ago · 36 km deep · 87 km away
  11. 2.23 km ESE of Indianola, Washington · 9878 days ago · 22 km deep · 19 km away
  12. 2.8Washington · 9871 days ago · 16 km deep · 74 km away
  13. 1.79 km NNE of Snoqualmie, Washington · 9871 days ago · 16 km deep · 74 km away
  14. 2.19 km NNE of Snoqualmie, Washington · 9871 days ago · 15 km deep · 74 km away
  15. 2.01 km ENE of Bellevue, Washington · 9866 days ago · 6 km deep · 44 km away
  16. 1.511 km E of Enumclaw, Washington · 9861 days ago · 2 km deep · 91 km away
  17. 1.62 km N of Gorst, Washington · 9857 days ago · -1 km deep · 26 km away
  18. 1.71 km NNE of Bothell, Washington · 9843 days ago · 27 km deep · 39 km away
  19. 1.60 km NNE of Lyman, Washington · 9842 days ago · -1 km deep · 97 km away
  20. 1.63 km NE of Woods Creek, Washington · 9840 days ago · -1 km deep · 65 km away
  21. 1.64 km NE of North Bend, Washington · 9838 days ago · 16 km deep · 78 km away
  22. 1.610 km NE of Snoqualmie, Washington · 9838 days ago · 14 km deep · 76 km away
  23. 1.51 km WNW of Lea Hill, Washington · 9837 days ago · 63 km deep · 64 km away

Before

  1. 1.54 km E of Dash Point, Washington · 9900 days ago · 22 km deep · 58 km away
  2. 2.03 km NNW of Port Townsend, Washington · 9900 days ago · 21 km deep · 41 km away
  3. 3.120 km WSW of Brinnon, Washington · 9903 days ago · 46 km deep · 37 km away
  4. 1.95 km ENE of Bonney Lake, Washington · 9910 days ago · 8 km deep · 79 km away
  5. 1.77 km NNE of Satsop, Washington · 9911 days ago · 40 km deep · 96 km away
  6. 2.29 km ENE of Duvall, Washington · 9926 days ago · 4 km deep · 64 km away
  7. 1.99 km ENE of Duvall, Washington · 9926 days ago · 4 km deep · 64 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10485328. Read Tue, Sep 29, 2026, 9:59 PM UTC.