Oregon earthquakes

M2.2 earthquake 15 km NW of Pilot Rock, Oregon

A magnitude 2.2 earthquake struck 15 km NW of Pilot Rock, Oregon on Tue, Apr 29, 1975, 2:46 PM PDT (21:46 UTC), 0 km (0 mi) below the surface.

A larger quake followed: M2.8 16 km NNE of West Richland, Washington. This one was a foreshock.

Pilot Rock 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
2.2 (md), micro
Local time
UTC
1975-04-29 21:46:24 UTC
Depth
-0.1 km (-0.1 mi), shallow
Epicenter
45.581° N, 118.972° 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 1.5 km horizontally, 1.4 km in depth
Magnitude uncertainty
±0.36
Depth from
Operator assigned
Station coverage gap
328°, poorly surrounded by stations
Stations used
5

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 39 in the 60 days after this one and 11 in the 30 days before it.

After

  1. 2.016 km NNE of West Richland, Washington · 18768 days ago · 0 km deep · 97 km away
  2. 1.816 km NNE of West Richland, Washington · 18768 days ago · 0 km deep · 97 km away
  3. 2.816 km NNE of West Richland, Washington · 18764 days ago · 1 km deep · 97 km away
  4. 2.74 km S of Cayuse, Oregon · 18764 days ago · 0 km deep · 33 km away
  5. 2.315 km NNE of West Richland, Washington · 18763 days ago · 0 km deep · 97 km away
  6. 1.614 km NNE of West Richland, Washington · 18762 days ago · 1 km deep · 97 km away
  7. 1.715 km NNE of West Richland, Washington · 18761 days ago · 0 km deep · 97 km away
  8. 1.514 km NNE of West Richland, Washington · 18761 days ago · 1 km deep · 97 km away
  9. 2.116 km NNE of West Richland, Washington · 18760 days ago · 0 km deep · 98 km away
  10. 1.515 km NNE of West Richland, Washington · 18758 days ago · 1 km deep · 97 km away
  11. 1.815 km NNE of West Richland, Washington · 18758 days ago · 1 km deep · 98 km away
  12. 1.715 km NNE of West Richland, Washington · 18758 days ago · 0 km deep · 97 km away
  13. 1.815 km NNE of West Richland, Washington · 18757 days ago · 0 km deep · 98 km away
  14. 1.615 km NNE of West Richland, Washington · 18756 days ago · 1 km deep · 97 km away
  15. 2.115 km NNE of West Richland, Washington · 18755 days ago · 0 km deep · 97 km away
  16. 2.216 km NNE of West Richland, Washington · 18752 days ago · 1 km deep · 98 km away
  17. 2.016 km NNE of West Richland, Washington · 18752 days ago · 1 km deep · 98 km away
  18. 2.814 km NE of Richland, Washington · 18751 days ago · 2 km deep · 92 km away
  19. 2.814 km WNW of La Grande, Oregon · 18751 days ago · 25 km deep · 60 km away
  20. 1.616 km NNE of West Richland, Washington · 18750 days ago · 0 km deep · 98 km away
  21. 1.614 km NNE of West Richland, Washington · 18749 days ago · 7 km deep · 96 km away
  22. 2.216 km SE of Prosser, Washington · 18749 days ago · 10 km deep · 76 km away
  23. 1.615 km NNE of West Richland, Washington · 18743 days ago · 0 km deep · 98 km away
  24. 2.215 km NNE of West Richland, Washington · 18739 days ago · 2 km deep · 98 km away
  25. 1.515 km NNE of West Richland, Washington · 18738 days ago · 1 km deep · 98 km away
  26. 2.315 km NNE of West Richland, Washington · 18736 days ago · 1 km deep · 97 km away
  27. 1.515 km NNE of West Richland, Washington · 18735 days ago · 0 km deep · 98 km away
  28. 1.617 km NNE of West Richland, Washington · 18735 days ago · 0 km deep · 99 km away
  29. 1.516 km NNE of West Richland, Washington · 18728 days ago · 0 km deep · 98 km away
  30. 2.316 km NNE of West Richland, Washington · 18727 days ago · 0 km deep · 98 km away
  31. 3.11 km WSW of Pasco, Washington · 18727 days ago · 1 km deep · 73 km away
  32. 2.1Washington · 18727 days ago · 0 km deep · 99 km away
  33. 1.92 km W of Pasco, Washington · 18726 days ago · 3 km deep · 74 km away
  34. 2.10 km E of Pasco, Washington · 18725 days ago · 1 km deep · 74 km away
  35. 1.9Washington · 18717 days ago · 0 km deep · 97 km away
  36. 2.011 km ESE of Prosser, Washington · 18714 days ago · 6 km deep · 83 km away
  37. 3.312 km SSE of Prosser, Washington · 18714 days ago · 9 km deep · 81 km away
  38. 2.412 km SSE of Prosser, Washington · 18714 days ago · 10 km deep · 81 km away
  39. 1.511 km SE of Prosser, Washington · 18714 days ago · 9 km deep · 82 km away

Before

  1. 1.715 km NNE of West Richland, Washington · 18775 days ago · 2 km deep · 98 km away
  2. 1.516 km NNE of West Richland, Washington · 18780 days ago · 2 km deep · 98 km away
  3. 1.915 km NNE of West Richland, Washington · 18781 days ago · 3 km deep · 97 km away
  4. 2.016 km NNE of West Richland, Washington · 18781 days ago · 1 km deep · 98 km away
  5. 1.716 km NNE of West Richland, Washington · 18783 days ago · 1 km deep · 98 km away
  6. 1.816 km NNE of West Richland, Washington · 18789 days ago · 0 km deep · 98 km away
  7. 1.916 km NNE of West Richland, Washington · 18790 days ago · 3 km deep · 98 km away
  8. 1.815 km NNE of West Richland, Washington · 18790 days ago · 1 km deep · 97 km away
  9. 1.615 km N of Richland, Washington · 18790 days ago · 0 km deep · 96 km away
  10. 1.615 km NNE of West Richland, Washington · 18790 days ago · 1 km deep · 97 km away
  11. 1.914 km NNE of West Richland, Washington · 18793 days ago · 1 km deep · 96 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10860768. Read Tue, Sep 22, 2026, 8:27 PM UTC.