California earthquakes

M3.2 earthquake 38 km ESE of Ruth, California

A magnitude 3.2 earthquake struck 38 km ESE of Ruth, California on Wed, Mar 22, 1978, 12:40 AM PST (08:40 UTC), 23 km (14 mi) below the surface.

A larger quake followed: M4.5 4 km SE of Calpella, California. This one was a foreshock.

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Map

Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude
3.2 (ML, local (Richter)), minor
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
1978-03-22 08:40:34 UTC
Depth
23.0 km (14.3 mi), shallow
Epicenter
40.078° N, 122.944° 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.

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: at least 199 in the 60 days after this one and 18 in the 30 days before it.

After

  1. 3.116 km ESE of Ruth, California · 17725 days ago · 48 km deep · 22 km away
  2. 1.816 km ESE of Ruth, California · 17725 days ago · 45 km deep · 22 km away
  3. 3.014 km ESE of Ruth, California · 17725 days ago · 44 km deep · 24 km away
  4. 2.18 km ENE of Trinity Village, California · 17724 days ago · 21 km deep · 100 km away
  5. 4.54 km SE of Calpella, California · 17722 days ago · 12 km deep · 98 km away
  6. 1.83 km SE of Calpella, California · 17722 days ago · 12 km deep · 98 km away
  7. 1.95 km NNE of Brooktrails, California · 17722 days ago · 1 km deep · 75 km away
  8. 2.04 km SE of Calpella, California · 17722 days ago · 7 km deep · 99 km away
  9. 2.83 km ESE of Calpella, California · 17722 days ago · 6 km deep · 97 km away
  10. 3.23 km ESE of Calpella, California · 17722 days ago · 8 km deep · 98 km away
  11. 2.92 km SSE of Calpella, California · 17722 days ago · 1 km deep · 99 km away
  12. 1.54 km SE of Calpella, California · 17722 days ago · 2 km deep · 99 km away
  13. 2.52 km SE of Calpella, California · 17722 days ago · 4 km deep · 98 km away
  14. 2.65 km SE of Calpella, California · 17722 days ago · 8 km deep · 99 km away
  15. 1.61 km SE of Calpella, California · 17722 days ago · 4 km deep · 98 km away
  16. 2.34 km SE of Calpella, California · 17722 days ago · 4 km deep · 99 km away
  17. 2.25 km SE of Calpella, California · 17722 days ago · 6 km deep · 99 km away
  18. 2.23 km ESE of Calpella, California · 17722 days ago · 6 km deep · 97 km away
  19. 1.87 km SE of Calpella, California · 17722 days ago · 2 km deep · 100 km away
  20. 2.74 km SE of Calpella, California · 17722 days ago · 10 km deep · 99 km away
  21. 2.32 km ENE of Calpella, California · 17722 days ago · 4 km deep · 95 km away
  22. 1.65 km SE of Calpella, California · 17722 days ago · 0 km deep · 99 km away
  23. 2.63 km ESE of Calpella, California · 17722 days ago · 6 km deep · 97 km away
  24. 2.64 km SE of Calpella, California · 17722 days ago · 6 km deep · 98 km away
  25. 2.24 km SE of Calpella, California · 17722 days ago · 6 km deep · 98 km away
  26. 2.13 km ESE of Calpella, California · 17722 days ago · 0 km deep · 97 km away
  27. 3.05 km SE of Calpella, California · 17722 days ago · 9 km deep · 99 km away
  28. 2.8near the coast of Northern California · 17722 days ago · 6 km deep · 99 km away
  29. 3.75 km SE of Calpella, California · 17722 days ago · 11 km deep · 100 km away
  30. 2.94 km SE of Calpella, California · 17722 days ago · 6 km deep · 99 km away
  31. 2.43 km ESE of Calpella, California · 17722 days ago · 6 km deep · 97 km away
  32. 2.33 km SE of Calpella, California · 17722 days ago · 3 km deep · 99 km away
  33. 3.53 km ESE of Calpella, California · 17722 days ago · 12 km deep · 97 km away
  34. 2.31 km ENE of Calpella, California · 17722 days ago · 2 km deep · 96 km away
  35. 2.63 km ESE of Calpella, California · 17722 days ago · 7 km deep · 97 km away
  36. 3.74 km SE of Calpella, California · 17721 days ago · 12 km deep · 99 km away
  37. 2.52 km SE of Calpella, California · 17721 days ago · 4 km deep · 98 km away
  38. 1.92 km ESE of Calpella, California · 17721 days ago · 2 km deep · 97 km away
  39. 1.95 km SE of Calpella, California · 17721 days ago · 1 km deep · 99 km away
  40. 2.53 km SE of Calpella, California · 17721 days ago · 7 km deep · 98 km away
  41. 2.96 km SE of Calpella, California · 17721 days ago · 8 km deep · 100 km away
  42. 2.4near the coast of Northern California · 17721 days ago · 8 km deep · 98 km away
  43. 2.03 km ESE of Calpella, California · 17721 days ago · 6 km deep · 97 km away
  44. 2.02 km E of Calpella, California · 17721 days ago · 10 km deep · 96 km away
  45. 2.65 km SE of Calpella, California · 17721 days ago · 6 km deep · 100 km away
  46. 2.22 km E of Calpella, California · 17721 days ago · 5 km deep · 96 km away
  47. 2.54 km SSE of Calpella, California · 17721 days ago · 3 km deep · 100 km away
  48. 2.05 km SE of Calpella, California · 17721 days ago · 0 km deep · 99 km away
  49. 2.11 km ESE of Calpella, California · 17721 days ago · 6 km deep · 97 km away
  50. 2.34 km SE of Calpella, California · 17721 days ago · 2 km deep · 99 km away
  51. 2.15 km SE of Calpella, California · 17721 days ago · 3 km deep · 100 km away
  52. 2.23 km SE of Calpella, California · 17721 days ago · 2 km deep · 98 km away
  53. 2.44 km SE of Calpella, California · 17721 days ago · 4 km deep · 98 km away
  54. 2.33 km SE of Calpella, California · 17721 days ago · 4 km deep · 98 km away
  55. 2.15 km SE of Calpella, California · 17721 days ago · 2 km deep · 100 km away
  56. 2.11 km ENE of Calpella, California · 17721 days ago · 6 km deep · 96 km away
  57. 2.83 km SE of Calpella, California · 17721 days ago · 4 km deep · 98 km away
  58. 2.14 km SE of Calpella, California · 17721 days ago · 3 km deep · 99 km away
  59. 1.70 km W of Redwood Valley, California · 17721 days ago · -1 km deep · 93 km away
  60. 3.14 km SE of Calpella, California · 17721 days ago · 12 km deep · 99 km away

The first 60 of at least 199.

Before

  1. 2.613 km ESE of Ruth, California · 17725 days ago · 44 km deep · 25 km away
  2. 3.313 km ESE of Ruth, California · 17725 days ago · 41 km deep · 25 km away
  3. 3.538 km NW of Paskenta, California · 17725 days ago · 5 km deep · 5 km away
  4. 1.72 km SW of Garberville, California · 17727 days ago · 15 km deep · 74 km away
  5. 2.60 km ESE of Redway, California · 17729 days ago · 18 km deep · 74 km away
  6. 3.03 km W of Ruth, California · 17730 days ago · 40 km deep · 41 km away
  7. 3.214 km NE of Redcrest, California · 17734 days ago · 24 km deep · 89 km away
  8. 1.89 km ENE of Redcrest, California · 17738 days ago · 21 km deep · 87 km away
  9. 2.53 km ENE of Willits, California · 17740 days ago · 3 km deep · 80 km away
  10. 2.19 km NNW of Redwood Valley, California · 17746 days ago · 5 km deep · 87 km away
  11. 2.03 km SW of Calpella, California · 17746 days ago · 8 km deep · 99 km away
  12. 2.13 km SW of Calpella, California · 17746 days ago · 11 km deep · 100 km away
  13. 1.820 km WSW of Stonyford, CA · 17748 days ago · -1 km deep · 84 km away
  14. 2.411 km NNW of Potter Valley, California · 17748 days ago · 1 km deep · 77 km away
  15. 2.116 km WSW of Durham, California · 17749 days ago · 21 km deep · 99 km away
  16. 2.46 km ESE of Willits, California · 17750 days ago · 6 km deep · 82 km away
  17. 2.416 km NE of Nice, California · 17750 days ago · 7 km deep · 96 km away
  18. 2.319 km SW of Stonyford, California · 17754 days ago · 9 km deep · 92 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp0000thh. Read Thu, Oct 1, 2026, 3:03 PM UTC.