Washington earthquakes

M2.2 earthquake 38 km SSE of Morton, WA

A magnitude 2.2 earthquake struck 38 km SSE of Morton, WA on Fri, May 24, 1991, 6:28 PM PDT (01:28 UTC), 11 km (7 mi) below the surface.

A larger quake followed: M3.5 8 km N of Bethany, Oregon. This one was a foreshock.

Morton 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, duration), micro
Magnitude from
Pacific Northwest Seismic Network
Local time
UTC
1991-05-25 01:28:46 UTC
Depth
11.1 km (6.9 mi), shallow
Epicenter
46.252° N, 122.053° 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 0.2 km horizontally, 0.3 km in depth
Magnitude uncertainty
±0.04
Depth from
From location
Station coverage gap
47°
Stations used
36

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 27 in the 60 days after this one and 7 in the 30 days before it.

After

  1. 1.737 km NNE of Amboy, Washington · 12914 days ago · -2 km deep · 12 km away
  2. 1.637 km NNE of Amboy, Washington · 12914 days ago · -2 km deep · 12 km away
  3. 1.628 km SW of White Swan, Washington · 12910 days ago · -1 km deep · 82 km away
  4. 1.637 km NNE of Amboy, Washington · 12899 days ago · -2 km deep · 12 km away
  5. 2.632 km NE of Amboy, Washington · 12889 days ago · 11 km deep · 20 km away
  6. 1.637 km NNE of Amboy, Washington · 12888 days ago · -1 km deep · 12 km away
  7. 2.122 km SSE of Greenwater, Washington · 12887 days ago · 10 km deep · 88 km away
  8. 2.623 km ENE of Ashford, Washington · 12886 days ago · -2 km deep · 72 km away
  9. 1.619 km S of Morton, Washington · 12884 days ago · 12 km deep · 22 km away
  10. 2.028 km ENE of Ashford, Washington · 12882 days ago · -1 km deep · 76 km away
  11. 2.010 km SSE of Mineral, Washington · 12881 days ago · 14 km deep · 42 km away
  12. 1.86 km WNW of Scappoose, Oregon · 12873 days ago · 16 km deep · 87 km away
  13. 1.631 km NNE of Amboy, Washington · 12872 days ago · 9 km deep · 24 km away
  14. 2.037 km NNE of Amboy, Washington · 12866 days ago · -2 km deep · 12 km away
  15. 1.636 km NNE of Amboy, Washington · 12862 days ago · -1 km deep · 13 km away
  16. 1.58 km N of Bethany, Oregon · 12860 days ago · 16 km deep · 93 km away
  17. 1.926 km WNW of Trout Lake, Washington · 12858 days ago · 14 km deep · 25 km away
  18. 2.08 km N of Bethany, Oregon · 12857 days ago · 17 km deep · 93 km away
  19. 2.48 km N of Bethany, Oregon · 12856 days ago · 17 km deep · 93 km away
  20. 3.58 km N of Bethany, Oregon · 12856 days ago · 19 km deep · 93 km away
  21. 2.28 km N of Bethany, Oregon · 12856 days ago · 16 km deep · 93 km away
  22. 2.28 km N of Bethany, Oregon · 12856 days ago · 17 km deep · 93 km away
  23. 1.78 km N of Bethany, Oregon · 12856 days ago · 16 km deep · 93 km away
  24. 2.39 km N of Bethany, Oregon · 12855 days ago · 17 km deep · 93 km away
  25. 1.88 km N of Bethany, Oregon · 12855 days ago · 17 km deep · 93 km away
  26. 1.57 km W of Morton, Washington · 12855 days ago · 7 km deep · 43 km away
  27. 1.88 km N of Bethany, Oregon · 12854 days ago · 16 km deep · 93 km away

Before

  1. 1.75 km ESE of Carbonado, Washington · 12914 days ago · 10 km deep · 91 km away
  2. 3.010 km E of Ashford, Washington · 12923 days ago · 10 km deep · 58 km away
  3. 1.637 km NNE of Amboy, Washington · 12923 days ago · 3 km deep · 12 km away
  4. 2.123 km NE of Ashford, Washington · 12928 days ago · -1 km deep · 74 km away
  5. 1.638 km NNE of Amboy, Washington · 12930 days ago · -1 km deep · 12 km away
  6. 1.614 km E of Wilkeson, Washington · 12936 days ago · 7 km deep · 95 km away
  7. 1.514 km E of Wilkeson, Washington · 12937 days ago · 7 km deep · 95 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10278733. Read Fri, Oct 2, 2026, 2:10 AM UTC.