Washington earthquakes

M1.6 earthquake 37 km NNE of Amboy, Washington

A magnitude 1.6 earthquake struck 37 km NNE of Amboy, Washington on Sun, Aug 30, 1981, 8:45 AM PDT (15:45 UTC), 1 km (0 mi) below the surface.

A larger quake followed: M1.8 38 km NNE of Amboy, Washington. This one was a foreshock.

Amboy 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
1.6 (md), micro
Local time
UTC
1981-08-30 15:45:49 UTC
Depth
0.6 km (0.4 mi), shallow
Epicenter
46.200° N, 122.197° 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 1.1 km horizontally, 0.9 km in depth
Magnitude uncertainty
±0.10
Depth from
From location
Station coverage gap
125°
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: 21 in the 60 days after this one and 19 in the 30 days before it.

After

  1. 1.524 km ENE of Ashford, Washington · 16458 days ago · -1 km deep · 80 km away
  2. 1.838 km NNE of Amboy, Washington · 16457 days ago · 0 km deep · 1 km away
  3. 1.638 km NNE of Amboy, Washington · 16456 days ago · 0 km deep · 1 km away
  4. 1.56 km S of Morton, Washington · 16456 days ago · 4 km deep · 34 km away
  5. 1.924 km S of Morton, Washington · 16455 days ago · 3 km deep · 16 km away
  6. 1.724 km S of Morton, Washington · 16455 days ago · 3 km deep · 15 km away
  7. 1.938 km NNE of Amboy, Washington · 16455 days ago · -1 km deep · 1 km away
  8. 1.638 km NNE of Amboy, Washington · 16453 days ago · 0 km deep · 1 km away
  9. 1.637 km NNE of Amboy, Washington · 16451 days ago · -1 km deep · 1 km away
  10. 1.938 km NNE of Amboy, Washington · 16451 days ago · -1 km deep · 1 km away
  11. 1.521 km NE of Ashford, Washington · 16451 days ago · 6 km deep · 82 km away
  12. 2.024 km ESE of Packwood, Washington · 16448 days ago · 3 km deep · 72 km away
  13. 1.623 km ESE of Packwood, Washington · 16448 days ago · -1 km deep · 71 km away
  14. 2.423 km ESE of Packwood, Washington · 16448 days ago · -1 km deep · 72 km away
  15. 1.518 km NNE of Ashford, Washington · 16446 days ago · 9 km deep · 82 km away
  16. 1.517 km NW of Trout Lake, Washington · 16429 days ago · 3 km deep · 42 km away
  17. 1.823 km S of Morton, Washington · 16429 days ago · 8 km deep · 16 km away
  18. 2.624 km ESE of Packwood, Washington · 16421 days ago · 3 km deep · 72 km away
  19. 1.95 km SSE of Mineral, Washington · 16414 days ago · 19 km deep · 52 km away
  20. 1.625 km ESE of Packwood, Washington · 16408 days ago · 0 km deep · 76 km away
  21. 1.638 km NNE of Amboy, Washington · 16405 days ago · 1 km deep · 1 km away

Before

  1. 2.023 km ESE of Packwood, Washington · 16463 days ago · 5 km deep · 72 km away
  2. 1.525 km ENE of Ashford, Washington · 16464 days ago · 0 km deep · 81 km away
  3. 1.724 km ESE of Packwood, Washington · 16465 days ago · -1 km deep · 72 km away
  4. 3.422 km S of Morton, Washington · 16466 days ago · 7 km deep · 18 km away
  5. 1.522 km S of Morton, Washington · 16469 days ago · 7 km deep · 18 km away
  6. 1.67 km WSW of Felida, Washington · 16471 days ago · 21 km deep · 73 km away
  7. 2.321 km SSE of Packwood, Washington · 16471 days ago · 1 km deep · 53 km away
  8. 2.04 km SSW of Orting, Washington · 16471 days ago · 0 km deep · 95 km away
  9. 1.537 km NNE of Amboy, Washington · 16472 days ago · -1 km deep · 0 km away
  10. 1.522 km ESE of Packwood, Washington · 16476 days ago · 2 km deep · 70 km away
  11. 1.638 km NNE of Amboy, Washington · 16476 days ago · -1 km deep · 1 km away
  12. 1.923 km ENE of Ashford, Washington · 16476 days ago · -1 km deep · 80 km away
  13. 1.923 km ENE of Ashford, Washington · 16476 days ago · 0 km deep · 82 km away
  14. 1.737 km NNE of Amboy, Washington · 16477 days ago · -1 km deep · 1 km away
  15. 2.829 km ESE of Packwood, Washington · 16483 days ago · 3 km deep · 73 km away
  16. 1.821 km S of Morton, Washington · 16483 days ago · 14 km deep · 19 km away
  17. 1.930 km E of Packwood, Washington · 16484 days ago · 7 km deep · 83 km away
  18. 1.516 km NNE of Ashford, Washington · 16487 days ago · 8 km deep · 80 km away
  19. 1.521 km ESE of Packwood, Washington · 16488 days ago · 6 km deep · 70 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10133588. Read Tue, Sep 22, 2026, 5:30 AM UTC.