Oregon earthquakes

M1.8 earthquake 3 km E of North Plains, Oregon

A magnitude 1.8 earthquake struck 3 km E of North Plains, Oregon on Thu, May 29, 1986, 4:32 AM PDT (11:32 UTC), 26 km (16 mi) below the surface.

A larger quake followed: M1.8 24 km S of Morton, Washington. This one was a foreshock.

North Plains forecastMore in Oregon

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), micro
Local time
UTC
1986-05-29 11:32:42 UTC
Depth
26.3 km (16.4 mi), shallow
Epicenter
45.603° N, 122.947° W
Region
Oregon
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 0.6 km horizontally, 1.1 km in depth
Magnitude uncertainty
±0.20
Depth from
From location
Station coverage gap
164°
Stations used
21

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 8 in the 60 days after this one and 88 in the 30 days before it.

After

  1. 1.824 km S of Morton, Washington · 14725 days ago · 7 km deep · 99 km away
  2. 2.238 km NNE of Amboy, Washington · 14697 days ago · 0 km deep · 89 km away
  3. 1.538 km NNE of Amboy, Washington · 14694 days ago · -2 km deep · 89 km away
  4. 2.037 km NNE of Amboy, Washington · 14685 days ago · -1 km deep · 89 km away
  5. 1.511 km W of Banks, Oregon · 14685 days ago · 15 km deep · 24 km away
  6. 1.828 km S of Mossyrock, Washington · 14685 days ago · 14 km deep · 84 km away
  7. 2.414 km SSW of Grand Ronde, Oregon · 14681 days ago · 29 km deep · 93 km away
  8. 2.118 km SSW of Grand Ronde, Oregon · 14681 days ago · 25 km deep · 97 km away

Before

  1. 1.937 km NNE of Amboy, Washington · 14739 days ago · 0 km deep · 89 km away
  2. 1.938 km NNE of Amboy, Washington · 14741 days ago · -1 km deep · 89 km away
  3. 1.937 km NNE of Amboy, Washington · 14741 days ago · 0 km deep · 88 km away
  4. 1.738 km NNE of Amboy, Washington · 14741 days ago · -1 km deep · 89 km away
  5. 1.738 km NNE of Amboy, Washington · 14741 days ago · -1 km deep · 89 km away
  6. 1.738 km NNE of Amboy, Washington · 14741 days ago · -1 km deep · 89 km away
  7. 1.737 km NNE of Amboy, Washington · 14742 days ago · 0 km deep · 88 km away
  8. 1.637 km NNE of Amboy, Washington · 14742 days ago · 0 km deep · 89 km away
  9. 1.837 km NNE of Amboy, Washington · 14742 days ago · 0 km deep · 88 km away
  10. 1.937 km NNE of Amboy, Washington · 14742 days ago · 0 km deep · 88 km away
  11. 2.137 km NNE of Amboy, Washington · 14742 days ago · 0 km deep · 88 km away
  12. 1.837 km NNE of Amboy, Washington · 14742 days ago · 0 km deep · 88 km away
  13. 1.837 km NNE of Amboy, Washington · 14743 days ago · 0 km deep · 88 km away
  14. 1.737 km NNE of Amboy, Washington · 14743 days ago · -1 km deep · 88 km away
  15. 1.537 km NNE of Amboy, Washington · 14743 days ago · 0 km deep · 88 km away
  16. 1.837 km NNE of Amboy, Washington · 14743 days ago · 0 km deep · 88 km away
  17. 1.737 km NNE of Amboy, Washington · 14744 days ago · 0 km deep · 88 km away
  18. 2.037 km NNE of Amboy, Washington · 14744 days ago · 0 km deep · 89 km away
  19. 1.837 km NNE of Amboy, Washington · 14744 days ago · 0 km deep · 88 km away
  20. 1.937 km NNE of Amboy, Washington · 14744 days ago · 0 km deep · 89 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10213313. Read Wed, Sep 23, 2026, 2:06 PM UTC.