Washington earthquakes

M1.9 earthquake 2 km N of Hamilton, Washington

A magnitude 1.9 earthquake struck 2 km N of Hamilton, Washington on Thu, Jul 31, 1980, 5:52 AM PDT (12:52 UTC), 3 km (2 mi) below the surface.

A larger quake followed: M2.0 9 km WNW of Orcas, Washington. This one was a foreshock.

Concrete 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
1.9 (md), micro
Local time
UTC
1980-07-31 12:52:19 UTC
Depth
2.7 km (1.7 mi), shallow
Epicenter
48.541° N, 121.987° 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 1.5 km horizontally, 1.5 km in depth
Magnitude uncertainty
±0.09
Depth from
From location
Station coverage gap
155°
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: 17 in the 60 days after this one and 13 in the 30 days before it.

After

  1. 1.75 km NNE of Oso, Washington · 16853 days ago · -1 km deep · 26 km away
  2. 2.09 km WNW of Orcas, Washington · 16844 days ago · 18 km deep · 80 km away
  3. 1.59 km WNW of Orcas, Washington · 16844 days ago · 13 km deep · 80 km away
  4. 1.57 km WNW of Anacortes, Washington · 16843 days ago · 52 km deep · 53 km away
  5. 3.05 km SW of Darrington, Washington · 16832 days ago · 1 km deep · 43 km away
  6. 1.64 km WSW of Hansville, Washington · 16832 days ago · 16 km deep · 84 km away
  7. 1.719 km SSW of Birch Bay, Washington · 16832 days ago · 11 km deep · 70 km away
  8. 1.63 km W of Shoreline, Washington · 16830 days ago · 19 km deep · 92 km away
  9. 1.84 km WSW of Shoreline, Washington · 16823 days ago · 20 km deep · 94 km away
  10. 2.12 km NNW of Warm Beach, Washington · 16822 days ago · 29 km deep · 48 km away
  11. 3.83 km NNW of North Sultan, Washington · 16804 days ago · 4 km deep · 71 km away
  12. 3.53 km NNW of North Sultan, Washington · 16802 days ago · 3 km deep · 71 km away
  13. 1.74 km NW of North Sultan, Washington · 16802 days ago · 1 km deep · 71 km away
  14. 1.75 km SSW of Lake McMurray, Washington · 16801 days ago · 0 km deep · 36 km away
  15. 1.611 km N of Swede Heaven, Washington · 16799 days ago · 4 km deep · 27 km away
  16. 1.73 km SW of Darrington, Washington · 16798 days ago · 5 km deep · 42 km away
  17. 1.521 km SE of Glacier, Washington · 16798 days ago · 23 km deep · 27 km away

Before

  1. 1.712 km NNE of Maple Falls, Washington · 16857 days ago · 1 km deep · 55 km away
  2. 1.94 km E of Granite Falls, Washington · 16858 days ago · -1 km deep · 50 km away
  3. 1.75 km ENE of Anacortes, Washington · 16865 days ago · 18 km deep · 41 km away
  4. 1.55 km SSW of Darrington, Washington · 16865 days ago · 6 km deep · 45 km away
  5. 1.510 km SSW of Swede Heaven, Washington · 16867 days ago · 17 km deep · 39 km away
  6. 1.722 km E of Darrington, Washington · 16868 days ago · 8 km deep · 57 km away
  7. 1.58 km NE of Maple Falls, Washington · 16870 days ago · -1 km deep · 48 km away
  8. 1.714 km SSW of Concrete, Washington · 16872 days ago · 2 km deep · 18 km away
  9. 2.85 km WSW of Lake Cavanaugh, Washington · 16874 days ago · 13 km deep · 27 km away
  10. 1.85 km WSW of Lake Cavanaugh, Washington · 16874 days ago · 11 km deep · 27 km away
  11. 1.55 km WSW of Lake Cavanaugh, Washington · 16874 days ago · 10 km deep · 27 km away
  12. 2.25 km WSW of Lake Cavanaugh, Washington · 16874 days ago · 11 km deep · 27 km away
  13. 1.75 km S of La Conner, Washington · 16882 days ago · 8 km deep · 44 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10086968. Read Wed, Sep 23, 2026, 3:33 AM UTC.