Washington earthquakes

M2.0 earthquake 12 km N of Concrete, Washington

A magnitude 2.0 earthquake struck 12 km N of Concrete, Washington on Wed, Mar 4, 1981, 12:53 PM PST (20:53 UTC), -1 km (0 mi) below the surface.

A larger quake followed: M3.6 19 km NNE of Index, 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
2.0 (md), micro
Local time
UTC
1981-03-04 20:53:04 UTC
Depth
-0.8 km (-0.5 mi), shallow
Epicenter
48.654° N, 121.725° 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 0.4 km horizontally, 0.9 km in depth
Magnitude uncertainty
±0.07
Depth from
Operator assigned
Station coverage gap
187°, poorly surrounded by stations
Stations used
6

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 25 in the 60 days after this one and 6 in the 30 days before it.

After

  1. 1.55 km ENE of Orcas, Washington · 16632 days ago · 16 km deep · 84 km away
  2. 1.615 km NNE of May Creek, Washington · 16628 days ago · 8 km deep · 76 km away
  3. 3.619 km NNE of Index, Washington · 16628 days ago · 5 km deep · 76 km away
  4. 1.518 km N of Index, Washington · 16628 days ago · 5 km deep · 76 km away
  5. 1.618 km NE of May Creek, Washington · 16628 days ago · 6 km deep · 76 km away
  6. 1.918 km N of Index, Washington · 16628 days ago · 5 km deep · 76 km away
  7. 1.56 km SE of Freeland, Washington · 16626 days ago · 50 km deep · 95 km away
  8. 2.47 km SSE of Coupeville, Washington · 16618 days ago · 25 km deep · 88 km away
  9. 1.518 km NNE of Index, Washington · 16617 days ago · 2 km deep · 76 km away
  10. 2.24 km S of Coupeville, Washington · 16611 days ago · 25 km deep · 89 km away
  11. 1.9Washington · 16609 days ago · 2 km deep · 38 km away
  12. 1.7Washington · 16609 days ago · 4 km deep · 76 km away
  13. 1.68 km WNW of Alger, Washington · 16602 days ago · -1 km deep · 52 km away
  14. 1.84 km SSW of Hamilton, Washington · 16598 days ago · 3 km deep · 29 km away
  15. 1.916 km NNE of May Creek, Washington · 16597 days ago · 7 km deep · 76 km away
  16. 2.122 km ENE of Glacier, Washington · 16594 days ago · -1 km deep · 34 km away
  17. 2.43 km ENE of Sedro-Woolley, Washington · 16594 days ago · 3 km deep · 38 km away
  18. 1.56 km SSE of Alger, Washington · 16593 days ago · 10 km deep · 44 km away
  19. 1.56 km NNE of Oso, Washington · 16587 days ago · 0 km deep · 39 km away
  20. 1.76 km NNE of Oso, Washington · 16580 days ago · 0 km deep · 39 km away
  21. 2.05 km NNE of Oso, Washington · 16580 days ago · 5 km deep · 40 km away
  22. 1.65 km NNE of Oso, Washington · 16580 days ago · 1 km deep · 40 km away
  23. 2.56 km NNE of Oso, Washington · 16580 days ago · 1 km deep · 39 km away
  24. 1.55 km NNE of Oso, Washington · 16580 days ago · 0 km deep · 39 km away
  25. 1.5Washington · 16578 days ago · 1 km deep · 39 km away

Before

  1. 1.613 km NNE of Orcas, Washington · 16639 days ago · 9 km deep · 82 km away
  2. 1.512 km E of Acme, Washington · 16646 days ago · -1 km deep · 24 km away
  3. 1.911 km NNW of Swede Heaven, Washington · 16656 days ago · 9 km deep · 31 km away
  4. 1.55 km ESE of Oso, Washington · 16666 days ago · -1 km deep · 46 km away
  5. 1.93 km WSW of Big Lake, Washington · 16668 days ago · 15 km deep · 50 km away
  6. 1.514 km SE of Verlot, Washington · 16668 days ago · 8 km deep · 71 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10099248. Read Wed, Sep 23, 2026, 4:32 AM UTC.