Washington earthquakes

M1.7 earthquake 3 km S of Alger, Washington

A magnitude 1.7 earthquake struck 3 km S of Alger, Washington on Wed, Apr 25, 1984, 7:26 PM PST (03:26 UTC), 18 km (11 mi) below the surface.

A larger quake followed: M1.9 6 km SSE of Concrete, Washington. This one was a foreshock.

Sedro-Woolley 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
1984-04-26 03:26:16 UTC
Depth
18.4 km (11.4 mi), shallow
Epicenter
48.585° N, 122.331° 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 0.3 km horizontally, 0.5 km in depth
Magnitude uncertainty
±0.13
Depth from
From location
Station coverage gap
129°
Stations used
4

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 7 in the 30 days before it.

After

  1. 1.96 km SSE of Concrete, Washington · 15486 days ago · 3 km deep · 47 km away
  2. 1.66 km NW of Burlington, Washington · 15485 days ago · 18 km deep · 10 km away
  3. 1.710 km SSW of Darrington, Washington · 15484 days ago · 18 km deep · 70 km away
  4. 1.94 km SSW of River Road, Washington · 15482 days ago · -1 km deep · 87 km away
  5. 1.74 km E of Granite Falls, Washington · 15480 days ago · -1 km deep · 63 km away
  6. 2.19 km NNW of Carlsborg, Washington · 15478 days ago · 40 km deep · 82 km away
  7. 2.05 km ENE of Anacortes, Washington · 15475 days ago · 17 km deep · 17 km away
  8. 2.14 km E of Machias, Washington · 15470 days ago · 7 km deep · 71 km away
  9. 1.74 km WNW of Orcas, Washington · 15467 days ago · 15 km deep · 50 km away
  10. 2.116 km S of Glacier, Washington · 15464 days ago · -1 km deep · 34 km away
  11. 1.6Washington · 15464 days ago · -1 km deep · 34 km away
  12. 2.115 km W of Quilcene, Washington · 15463 days ago · 46 km deep · 99 km away
  13. 2.1Washington-British Columbia border region · 15460 days ago · 17 km deep · 65 km away
  14. 2.211 km NNE of Hamilton, Washington · 15456 days ago · 2 km deep · 29 km away
  15. 1.69 km N of Hamilton, Washington · 15456 days ago · -1 km deep · 25 km away
  16. 2.64 km NNW of Verlot, Washington · 15453 days ago · 14 km deep · 64 km away
  17. 1.61 km SSE of Friday Harbor, Washington · 15453 days ago · 49 km deep · 51 km away
  18. 2.05 km WNW of Sedro-Woolley, Washington · 15452 days ago · 13 km deep · 7 km away
  19. 1.65 km NW of Sedro-Woolley, Washington · 15452 days ago · 31 km deep · 6 km away
  20. 1.51 km ENE of West Lake Stevens, Washington · 15451 days ago · 58 km deep · 68 km away
  21. 1.72 km NNW of Alger, Washington · 15449 days ago · 12 km deep · 7 km away
  22. 2.03 km NNW of North Saanich, Canada · 15448 days ago · 21 km deep · 83 km away
  23. 2.15 km N of Burlington, Washington · 15445 days ago · 15 km deep · 7 km away
  24. 1.64 km W of Lynden, Washington · 15444 days ago · 17 km deep · 43 km away
  25. 2.66 km SE of Edison, Washington · 15440 days ago · 9 km deep · 9 km away
  26. 2.25 km ENE of Bay View, Washington · 15438 days ago · 14 km deep · 10 km away
  27. 2.36 km W of Rockport, Washington · 15438 days ago · 2 km deep · 49 km away
  28. 2.016 km W of Coupeville, Washington · 15433 days ago · 46 km deep · 57 km away
  29. 1.86 km NW of Bangor Trident Base, Washington · 15432 days ago · 13 km deep · 97 km away
  30. 1.830 km ENE of Glacier, Washington · 15430 days ago · 4 km deep · 72 km away

Before

  1. 2.09 km E of Orcas, Washington · 15492 days ago · 6 km deep · 36 km away
  2. 1.72 km SSW of Everett, Washington · 15496 days ago · 26 km deep · 70 km away
  3. 1.57 km NE of Verlot, Washington · 15499 days ago · -1 km deep · 67 km away
  4. 2.35 km NW of Orcas, Washington · 15504 days ago · 17 km deep · 49 km away
  5. 2.15 km SE of Monroe, Washington · 15508 days ago · 24 km deep · 91 km away
  6. 1.510 km S of Swede Heaven, Washington · 15509 days ago · 14 km deep · 63 km away
  7. 2.34 km WSW of Coupeville, Washington · 15515 days ago · 24 km deep · 53 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10175398. Read Tue, Sep 22, 2026, 11:13 AM UTC.