Washington earthquakes

M1.7 earthquake 5 km NNE of Oso, Washington

A magnitude 1.7 earthquake struck 5 km NNE of Oso, Washington on Fri, Aug 1, 1980, 1:55 PM PDT (20:55 UTC), -1 km (0 mi) below the surface.

A larger quake followed: M3.8 3 km NNW of North Sultan, Washington. This one was a foreshock.

Swede Heaven 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
1.7 (md), micro
Local time
UTC
1980-08-01 20:55:42 UTC
Depth
-0.7 km (-0.4 mi), shallow
Epicenter
48.315° N, 121.899° 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 0.2 km horizontally, 0.2 km in depth
Magnitude uncertainty
±0.12
Depth from
Operator assigned
Station coverage gap
121°
Stations used
13

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 20 in the 60 days after this one and 15 in the 30 days before it.

After

  1. 2.09 km WNW of Orcas, Washington · 16849 days ago · 18 km deep · 93 km away
  2. 1.59 km WNW of Orcas, Washington · 16849 days ago · 13 km deep · 93 km away
  3. 1.57 km WNW of Anacortes, Washington · 16849 days ago · 52 km deep · 65 km away
  4. 2.42 km SE of City of Sammamish, Washington · 16841 days ago · 9 km deep · 81 km away
  5. 3.05 km SW of Darrington, Washington · 16838 days ago · 1 km deep · 21 km away
  6. 1.64 km WSW of Hansville, Washington · 16838 days ago · 16 km deep · 70 km away
  7. 1.719 km SSW of Birch Bay, Washington · 16837 days ago · 11 km deep · 88 km away
  8. 1.63 km W of Shoreline, Washington · 16836 days ago · 19 km deep · 72 km away
  9. 1.84 km WSW of Shoreline, Washington · 16829 days ago · 20 km deep · 74 km away
  10. 2.12 km NNW of Warm Beach, Washington · 16828 days ago · 29 km deep · 38 km away
  11. 3.83 km NNW of North Sultan, Washington · 16810 days ago · 4 km deep · 46 km away
  12. 3.53 km NNW of North Sultan, Washington · 16808 days ago · 3 km deep · 46 km away
  13. 1.74 km NW of North Sultan, Washington · 16808 days ago · 1 km deep · 45 km away
  14. 1.75 km SSW of Lake McMurray, Washington · 16807 days ago · 0 km deep · 27 km away
  15. 1.611 km N of Swede Heaven, Washington · 16805 days ago · 4 km deep · 16 km away
  16. 1.73 km SW of Darrington, Washington · 16804 days ago · 5 km deep · 21 km away
  17. 1.521 km SE of Glacier, Washington · 16803 days ago · 23 km deep · 48 km away
  18. 2.72 km WSW of Big Lake, Washington · 16800 days ago · 15 km deep · 29 km away
  19. 2.32 km WSW of Big Lake, Washington · 16800 days ago · 15 km deep · 29 km away
  20. 2.82 km E of Cottage Lake, Washington · 16799 days ago · 8 km deep · 65 km away

Before

  1. 1.92 km N of Hamilton, Washington · 16860 days ago · 3 km deep · 26 km away
  2. 1.712 km NNE of Maple Falls, Washington · 16863 days ago · 1 km deep · 80 km away
  3. 1.94 km E of Granite Falls, Washington · 16863 days ago · -1 km deep · 25 km away
  4. 1.75 km ENE of Anacortes, Washington · 16870 days ago · 18 km deep · 53 km away
  5. 1.55 km SSW of Darrington, Washington · 16871 days ago · 6 km deep · 23 km away
  6. 1.510 km SSW of Swede Heaven, Washington · 16873 days ago · 17 km deep · 14 km away
  7. 1.722 km E of Darrington, Washington · 16873 days ago · 8 km deep · 44 km away
  8. 1.58 km NE of Maple Falls, Washington · 16876 days ago · -1 km deep · 74 km away
  9. 1.714 km SSW of Concrete, Washington · 16878 days ago · 2 km deep · 13 km away
  10. 2.85 km WSW of Lake Cavanaugh, Washington · 16880 days ago · 13 km deep · 14 km away
  11. 1.85 km WSW of Lake Cavanaugh, Washington · 16880 days ago · 11 km deep · 14 km away
  12. 1.55 km WSW of Lake Cavanaugh, Washington · 16880 days ago · 10 km deep · 14 km away
  13. 2.25 km WSW of Lake Cavanaugh, Washington · 16880 days ago · 11 km deep · 14 km away
  14. 1.63 km SSW of Fall City, Washington · 16887 days ago · 18 km deep · 86 km away
  15. 1.75 km S of La Conner, Washington · 16888 days ago · 8 km deep · 45 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10081568. Read Mon, Sep 28, 2026, 4:41 PM UTC.