Washington earthquakes

M1.5 earthquake 6 km SSE of Alger, Washington

A magnitude 1.5 earthquake struck 6 km SSE of Alger, Washington on Sun, Apr 19, 1981, 4:00 AM PST (12:00 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M1.7 7 km NNW of Kingston, 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.

Open the live map with earthquakes

The earthquake

Magnitude
1.5 (md), micro
Local time
UTC
1981-04-19 12:00:06 UTC
Depth
10.4 km (6.5 mi), shallow
Epicenter
48.569° N, 122.313° 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 0.6 km horizontally, 2.0 km in depth
Magnitude uncertainty
±0.16
Depth from
From location
Station coverage gap
123°
Stations used
9

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 24 in the 60 days after this one and 13 in the 30 days before it.

After

  1. 1.77 km NNW of Kingston, Washington · 16587 days ago · 29 km deep · 81 km away
  2. 1.56 km NNE of Oso, Washington · 16587 days ago · 0 km deep · 41 km away
  3. 1.76 km NNE of Oso, Washington · 16580 days ago · 0 km deep · 40 km away
  4. 2.05 km NNE of Oso, Washington · 16580 days ago · 5 km deep · 42 km away
  5. 1.65 km NNE of Oso, Washington · 16580 days ago · 1 km deep · 41 km away
  6. 2.56 km NNE of Oso, Washington · 16580 days ago · 1 km deep · 42 km away
  7. 1.55 km NNE of Oso, Washington · 16579 days ago · 0 km deep · 40 km away
  8. 1.5Washington · 16578 days ago · 1 km deep · 41 km away
  9. 1.52 km SW of Roosevelt, Washington · 16576 days ago · 25 km deep · 80 km away
  10. 2.413 km WSW of Ault Field, Washington · 16568 days ago · 29 km deep · 50 km away
  11. 2.06 km NNE of Port Townsend, Washington · 16567 days ago · 21 km deep · 54 km away
  12. 2.40 km W of Mountlake Terrace, Washington · 16564 days ago · 23 km deep · 87 km away
  13. 1.519 km NNE of Index, Washington · 16563 days ago · 6 km deep · 88 km away
  14. 1.68 km SSW of Concrete, Washington · 16559 days ago · 3 km deep · 42 km away
  15. 1.512 km NNE of Hamilton, Washington · 16553 days ago · -1 km deep · 28 km away
  16. 1.814 km NNE of Hamilton, Washington · 16553 days ago · -1 km deep · 31 km away
  17. 1.712 km WNW of Langford, Canada · 16550 days ago · 19 km deep · 99 km away
  18. 2.56 km NNW of Bangor Trident Base, Washington · 16547 days ago · 21 km deep · 93 km away
  19. 1.911 km NE of Oak Bay, Canada · 16542 days ago · 35 km deep · 64 km away
  20. 2.37 km ENE of Quilcene, Washington · 16541 days ago · 52 km deep · 88 km away
  21. 1.815 km NNE of Hamilton, Washington · 16538 days ago · -1 km deep · 29 km away
  22. 1.915 km NNE of Hamilton, Washington · 16538 days ago · -1 km deep · 30 km away
  23. 1.516 km SSE of Darrington, Washington · 16535 days ago · 9 km deep · 78 km away
  24. 1.54 km WSW of Darrington, Washington · 16534 days ago · 9 km deep · 61 km away

Before

  1. 2.43 km ENE of Sedro-Woolley, Washington · 16594 days ago · 3 km deep · 11 km away
  2. 2.122 km ENE of Glacier, Washington · 16594 days ago · -1 km deep · 65 km away
  3. 1.711 km NNE of North Saanich, Canada · 16595 days ago · 14 km deep · 78 km away
  4. 1.916 km NNE of May Creek, Washington · 16596 days ago · 7 km deep · 86 km away
  5. 1.84 km SSW of Hamilton, Washington · 16597 days ago · 3 km deep · 23 km away
  6. 1.69 km ESE of Salt Spring Island, Canada · 16600 days ago · 20 km deep · 81 km away
  7. 1.68 km WNW of Alger, Washington · 16602 days ago · -1 km deep · 14 km away
  8. 1.53 km SE of Echo Lake, Washington · 16607 days ago · 16 km deep · 92 km away
  9. 1.7Washington · 16608 days ago · 4 km deep · 87 km away
  10. 1.9Washington · 16608 days ago · 2 km deep · 11 km away
  11. 2.24 km S of Coupeville, Washington · 16610 days ago · 25 km deep · 52 km away
  12. 1.518 km NNE of Index, Washington · 16617 days ago · 2 km deep · 88 km away
  13. 2.47 km SSE of Coupeville, Washington · 16617 days ago · 25 km deep · 52 km away

Earthquakes todayWashington earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10105708. Read Tue, Sep 22, 2026, 2:15 PM UTC.