California earthquakes

M2.4 earthquake 10 km SE of Comptche, California

A magnitude 2.4 earthquake struck 10 km SE of Comptche, California on Fri, Jan 6, 1978, 4:52 AM PST (12:52 UTC), 7 km (4 mi) below the surface.

A larger quake followed: M2.8 10 km NE of Healdsburg, 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
2.4 (md), micro
Local time
UTC
1978-01-06 12:52:22 UTC
Depth
7.2 km (4.5 mi), shallow
Epicenter
39.205° N, 123.505° 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 1.5 km horizontally, 3.7 km in depth
Magnitude uncertainty
±0.07
Depth from
From location
Station coverage gap
272°, poorly surrounded by stations
Stations used
9

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 79 in the 60 days after this one and 34 in the 30 days before it.

After

  1. 1.68 km W of Cobb, California · 17791 days ago · 0 km deep · 74 km away
  2. 1.57 km WSW of Cobb, California · 17789 days ago · 1 km deep · 75 km away
  3. 2.810 km NE of Healdsburg, California · 17789 days ago · 6 km deep · 87 km away
  4. 1.97 km WSW of Cobb, California · 17789 days ago · 1 km deep · 75 km away
  5. 2.410 km NE of Healdsburg, California · 17789 days ago · 5 km deep · 87 km away
  6. 1.57 km W of Cobb, California · 17787 days ago · 1 km deep · 74 km away
  7. 2.110 km NE of Healdsburg, California · 17787 days ago · 3 km deep · 88 km away
  8. 2.56 km W of Cobb, California · 17787 days ago · 3 km deep · 75 km away
  9. 1.66 km NNW of Cobb, California · 17785 days ago · 3 km deep · 75 km away
  10. 1.96 km S of Clear Lake Riviera, California · 17785 days ago · 1 km deep · 76 km away
  11. 1.76 km WSW of Cobb, California · 17784 days ago · 1 km deep · 75 km away
  12. 2.78 km W of Cobb, California · 17784 days ago · 0 km deep · 74 km away
  13. 2.28 km W of Cobb, California · 17784 days ago · 0 km deep · 74 km away
  14. 2.36 km W of Cobb, California · 17784 days ago · 3 km deep · 75 km away
  15. 3.08 km WSW of Cobb, California · 17784 days ago · 0 km deep · 74 km away
  16. 1.58 km W of Cobb, California · 17784 days ago · 1 km deep · 74 km away
  17. 2.47 km W of Cobb, California · 17784 days ago · 3 km deep · 74 km away
  18. 1.97 km WSW of Cobb, California · 17784 days ago · 0 km deep · 75 km away
  19. 3.16 km WSW of Cobb, California · 17784 days ago · 0 km deep · 75 km away
  20. 1.66 km WSW of Cobb, California · 17784 days ago · -1 km deep · 75 km away
  21. 2.54 km WNW of Ukiah, California · 17783 days ago · 10 km deep · 22 km away
  22. 2.23 km WNW of Ukiah, California · 17783 days ago · 9 km deep · 22 km away
  23. 3.44 km NW of Ukiah, California · 17783 days ago · 7 km deep · 22 km away
  24. 3.34 km WNW of Ukiah, California · 17780 days ago · 11 km deep · 22 km away
  25. 2.06 km W of Cobb, California · 17780 days ago · 3 km deep · 74 km away
  26. 2.16 km W of Cobb, California · 17779 days ago · 1 km deep · 76 km away
  27. 2.58 km W of Cobb, California · 17777 days ago · 1 km deep · 74 km away
  28. 3.010 km ESE of Willits, California · 17777 days ago · 5 km deep · 30 km away
  29. 1.710 km NW of Cobb, California · 17777 days ago · 1 km deep · 69 km away
  30. 1.65 km W of Cobb, California · 17777 days ago · 3 km deep · 76 km away
  31. 1.68 km WSW of Cobb, California · 17775 days ago · 1 km deep · 75 km away
  32. 2.46 km ESE of Willits, California · 17773 days ago · -1 km deep · 27 km away
  33. 1.511 km WNW of Cobb, California · 17772 days ago · 15 km deep · 69 km away
  34. 1.68 km W of Cobb, California · 17772 days ago · 0 km deep · 74 km away
  35. 2.07 km W of Cobb, California · 17772 days ago · 0 km deep · 74 km away
  36. 1.611 km ENE of Healdsburg, California · 17772 days ago · 5 km deep · 89 km away
  37. 2.95 km ENE of Willits, California · 17770 days ago · 0 km deep · 31 km away
  38. 1.56 km WSW of Cobb, California · 17768 days ago · 0 km deep · 76 km away
  39. 3.017 km NE of Lucerne, California · 17768 days ago · 6 km deep · 72 km away
  40. 1.96 km W of Cobb, California · 17767 days ago · 4 km deep · 74 km away
  41. 3.15 km ESE of Willits, California · 17766 days ago · 2 km deep · 28 km away
  42. 1.86 km W of Cobb, California · 17764 days ago · 0 km deep · 74 km away
  43. 2.29 km NNW of Redwood Valley, California · 17763 days ago · 7 km deep · 28 km away
  44. 2.89 km NNE of Brooktrails, California · 17762 days ago · 4 km deep · 37 km away
  45. 2.418 km NE of Upper Lake, California · 17762 days ago · 3 km deep · 63 km away
  46. 1.84 km WSW of Cobb, California · 17761 days ago · 1 km deep · 77 km away
  47. 2.27 km NNE of Hopland, California · 17761 days ago · 1 km deep · 42 km away
  48. 2.27 km NE of Hopland, California · 17761 days ago · 2 km deep · 42 km away
  49. 1.67 km W of Cobb, California · 17760 days ago · 0 km deep · 75 km away
  50. 3.411 km ENE of Laytonville, California · 17760 days ago · -1 km deep · 59 km away
  51. 2.74 km ESE of Willits, California · 17759 days ago · 2 km deep · 27 km away
  52. 2.54 km ESE of Willits, California · 17759 days ago · 2 km deep · 26 km away
  53. 1.66 km WSW of Cobb, California · 17755 days ago · 4 km deep · 75 km away
  54. 2.08 km ESE of Talmage, California · 17755 days ago · 8 km deep · 39 km away
  55. 2.37 km NNE of Nice, California · 17755 days ago · 7 km deep · 59 km away
  56. 2.46 km W of Cobb, California · 17754 days ago · 2 km deep · 75 km away
  57. 2.16 km W of Cobb, California · 17754 days ago · -1 km deep · 75 km away
  58. 2.56 km W of Cobb, California · 17753 days ago · 3 km deep · 75 km away
  59. 1.66 km W of Cobb, California · 17750 days ago · 1 km deep · 75 km away
  60. 1.811 km NE of Healdsburg, California · 17749 days ago · 4 km deep · 87 km away

The first 60 of 79.

Before

  1. 3.04 km ENE of Willits, California · 17792 days ago · 2 km deep · 30 km away
  2. 2.79 km NNE of Larkfield-Wikiup, California · 17792 days ago · 3 km deep · 98 km away
  3. 1.67 km E of Geyserville, California · 17793 days ago · 6 km deep · 82 km away
  4. 1.88 km NE of Healdsburg, California · 17793 days ago · 8 km deep · 86 km away
  5. 1.78 km W of Cobb, California · 17794 days ago · 2 km deep · 72 km away
  6. 1.69 km W of Cobb, California · 17795 days ago · 1 km deep · 73 km away
  7. 1.56 km E of Geyserville, CA · 17796 days ago · 4 km deep · 80 km away
  8. 1.67 km E of Geyserville, CA · 17797 days ago · 3 km deep · 81 km away
  9. 1.58 km W of Cobb, California · 17799 days ago · 0 km deep · 73 km away
  10. 1.77 km WSW of Cobb, California · 17802 days ago · -1 km deep · 75 km away
  11. 1.69 km W of Cobb, California · 17802 days ago · 1 km deep · 72 km away
  12. 2.19 km W of Cobb, California · 17802 days ago · 1 km deep · 72 km away
  13. 2.19 km W of Cobb, California · 17802 days ago · 1 km deep · 72 km away
  14. 2.46 km E of Geyserville, California · 17803 days ago · 4 km deep · 80 km away
  15. 2.57 km WSW of Cobb, California · 17804 days ago · 4 km deep · 75 km away
  16. 3.38 km ESE of Willits, California · 17808 days ago · 9 km deep · 30 km away
  17. 1.66 km W of Cobb, California · 17808 days ago · 3 km deep · 75 km away
  18. 1.57 km WSW of Cobb, California · 17808 days ago · 0 km deep · 75 km away
  19. 2.66 km W of Cobb, California · 17808 days ago · -1 km deep · 75 km away
  20. 2.04 km WSW of Cobb, California · 17809 days ago · 1 km deep · 78 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1038487. Read Wed, Sep 23, 2026, 3:30 AM UTC.