Washington earthquakes

M1.8 earthquake 6 km SW of Morton, Washington

A magnitude 1.8 earthquake struck 6 km SW of Morton, Washington on Tue, Mar 24, 1992, 8:33 AM PST (16:33 UTC), 21 km (13 mi) below the surface.

A larger quake followed: M2.5 Washington. 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
1.8 (Md, duration), micro
Magnitude from
Pacific Northwest Seismic Network
Local time
UTC
1992-03-24 16:33:22 UTC
Depth
20.5 km (12.8 mi), shallow
Epicenter
46.509° N, 122.329° 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 0.3 km horizontally, 0.4 km in depth
Magnitude uncertainty
±0.04
Depth from
From location
Station coverage gap
43°
Stations used
33

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 22 in the 60 days after this one and 18 in the 30 days before it.

After

  1. 1.726 km N of Packwood, Washington · 12611 days ago · -1 km deep · 63 km away
  2. 1.726 km SSE of Mossyrock, Washington · 12609 days ago · -1 km deep · 22 km away
  3. 1.722 km ENE of Ashford, Washington · 12607 days ago · -2 km deep · 58 km away
  4. 1.710 km SE of Mossyrock, Washington · 12599 days ago · 15 km deep · 6 km away
  5. 1.74 km SE of Mossyrock, Washington · 12599 days ago · 19 km deep · 9 km away
  6. 1.626 km N of Packwood, Washington · 12597 days ago · 2 km deep · 62 km away
  7. 2.138 km NNE of Amboy, Washington · 12590 days ago · -1 km deep · 36 km away
  8. 2.23 km E of Mount Vista, Washington · 12586 days ago · 19 km deep · 89 km away
  9. 1.62 km SW of Kalama, Washington · 12584 days ago · 20 km deep · 71 km away
  10. 2.5Washington · 12584 days ago · -2 km deep · 59 km away
  11. 1.814 km WNW of Packwood, Washington · 12581 days ago · 3 km deep · 39 km away
  12. 1.724 km ENE of Ashford, Washington · 12579 days ago · -2 km deep · 60 km away
  13. 1.59 km ENE of Ashford, Washington · 12573 days ago · 5 km deep · 44 km away
  14. 2.136 km NNE of Amboy, Washington · 12573 days ago · -2 km deep · 35 km away
  15. 1.938 km NNE of Amboy, Washington · 12572 days ago · 3 km deep · 36 km away
  16. 2.318 km NNE of Ashford, Washington · 12567 days ago · 6 km deep · 54 km away
  17. 2.024 km ENE of Ashford, Washington · 12563 days ago · -2 km deep · 60 km away
  18. 1.823 km ENE of Ashford, Washington · 12562 days ago · -2 km deep · 58 km away
  19. 2.425 km ENE of Ashford, Washington · 12561 days ago · 0 km deep · 60 km away
  20. 1.623 km ENE of Ashford, Washington · 12561 days ago · -2 km deep · 58 km away
  21. 1.823 km ENE of Ashford, Washington · 12557 days ago · -2 km deep · 59 km away
  22. 1.625 km ENE of Ashford, Washington · 12556 days ago · -2 km deep · 60 km away

Before

  1. 1.821 km NE of Ashford, Washington · 12612 days ago · -2 km deep · 57 km away
  2. 1.96 km SSW of Morton, Washington · 12613 days ago · 20 km deep · 1 km away
  3. 1.612 km WSW of Packwood, Washington · 12616 days ago · 0 km deep · 40 km away
  4. 1.925 km ENE of Ashford, Washington · 12618 days ago · -2 km deep · 60 km away
  5. 2.029 km ENE of Ashford, Washington · 12620 days ago · 0 km deep · 64 km away
  6. 2.022 km ENE of Ashford, Washington · 12620 days ago · -1 km deep · 57 km away
  7. 3.09 km ENE of East Cathlamet, Washington · 12620 days ago · 28 km deep · 77 km away
  8. 2.723 km ENE of Ashford, Washington · 12622 days ago · -2 km deep · 58 km away
  9. 2.26 km S of Bucoda, Washington · 12623 days ago · 23 km deep · 49 km away
  10. 1.723 km ENE of Ashford, Washington · 12626 days ago · -2 km deep · 59 km away
  11. 1.723 km N of Packwood, Washington · 12626 days ago · -1 km deep · 57 km away
  12. 1.622 km ENE of Ashford, Washington · 12627 days ago · -2 km deep · 57 km away
  13. 1.626 km ENE of Ashford, Washington · 12628 days ago · -2 km deep · 61 km away
  14. 1.627 km ENE of Ashford, Washington · 12629 days ago · -2 km deep · 63 km away
  15. 2.19 km E of Yacolt, Washington · 12629 days ago · 8 km deep · 71 km away
  16. 1.822 km ENE of Ashford, Washington · 12631 days ago · -1 km deep · 57 km away
  17. 1.721 km N of Packwood, Washington · 12634 days ago · -2 km deep · 62 km away
  18. 1.924 km NE of Ashford, Washington · 12636 days ago · -2 km deep · 61 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10290293. Read Sat, Oct 3, 2026, 8:26 PM UTC.