Washington earthquakes

M2.2 earthquake 13 km NNE of Amboy, Washington

A magnitude 2.2 earthquake struck 13 km NNE of Amboy, Washington on Sun, Aug 31, 1975, 7:53 PM PDT (02:53 UTC), 5 km (3 mi) below the surface.

A larger quake followed: M2.4 25 km SSE of Morton, 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
2.2 (md), micro
Local time
UTC
1975-09-01 02:53:15 UTC
Depth
5.1 km (3.2 mi), shallow
Epicenter
46.032° N, 122.401° 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 1.4 km horizontally, 2.6 km in depth
Magnitude uncertainty
±0.07
Depth from
From location
Station coverage gap
273°, poorly surrounded by stations
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: 16 in the 60 days after this one and 1 in the 30 days before it.

After

  1. 2.038 km SSE of Morton, Washington · 18648 days ago · 4 km deep · 30 km away
  2. 2.425 km SSE of Morton, Washington · 18647 days ago · 8 km deep · 39 km away
  3. 2.925 km S of Morton, Washington · 18634 days ago · 9 km deep · 35 km away
  4. 2.024 km S of Morton, Washington · 18633 days ago · 7 km deep · 36 km away
  5. 1.711 km NNW of Skamokawa Valley, Washington · 18633 days ago · 0 km deep · 90 km away
  6. 1.911 km W of Packwood, Washington · 18630 days ago · 4 km deep · 77 km away
  7. 2.024 km S of Morton, Washington · 18626 days ago · -1 km deep · 36 km away
  8. 2.727 km S of Morton, Washington · 18613 days ago · 11 km deep · 33 km away
  9. 2.642 km SSE of Morton, Washington · 18610 days ago · 9 km deep · 30 km away
  10. 3.227 km NE of Amboy, Washington · 18609 days ago · 23 km deep · 15 km away
  11. 1.813 km NNW of Mossyrock, Washington · 18609 days ago · -1 km deep · 69 km away
  12. 2.213 km NNW of Mossyrock, Washington · 18609 days ago · 13 km deep · 69 km away
  13. 1.913 km SSE of Pe Ell, Washington · 18607 days ago · -1 km deep · 80 km away
  14. 2.218 km N of Mossyrock, Washington · 18599 days ago · 2 km deep · 74 km away
  15. 1.713 km WSW of Alder, Washington · 18598 days ago · -1 km deep · 79 km away
  16. 1.96 km SW of Morton, Washington · 18592 days ago · 11 km deep · 55 km away

Before

  1. 2.130 km NNE of Amboy, Washington · 18672 days ago · 5 km deep · 17 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10861618. Read Tue, Sep 22, 2026, 8:52 PM UTC.