California earthquakes

M2.1 earthquake 11 km S of Comptche, California

A magnitude 2.1 earthquake struck 11 km S of Comptche, California on Fri, Jul 3, 1981, 4:51 AM PDT (11:51 UTC), 4 km (2 mi) below the surface.

A larger quake followed: M2.2 4 km W of Stonyford, 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
2.1 (md), micro
Local time
UTC
1981-07-03 11:51:19 UTC
Depth
3.7 km (2.3 mi), shallow
Epicenter
39.162° N, 123.566° 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 0.2 km horizontally, 0.5 km in depth
Magnitude uncertainty
±0.13
Depth from
From location
Station coverage gap
157°
Stations used
15

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 115 in the 60 days after this one and 51 in the 30 days before it.

After

  1. 1.96 km W of Stonyford, California · 16517 days ago · 0 km deep · 85 km away
  2. 2.06 km SW of Cobb, California · 16517 days ago · 1 km deep · 80 km away
  3. 2.24 km W of Stonyford, California · 16517 days ago · 3 km deep · 86 km away
  4. 2.09 km WSW of Cobb, California · 16516 days ago · 2 km deep · 75 km away
  5. 1.75 km WNW of Potter Valley, California · 16515 days ago · -1 km deep · 39 km away
  6. 1.67 km WSW of Cobb, California · 16515 days ago · 1 km deep · 77 km away
  7. 1.73 km N of Larkfield-Wikiup, California · 16514 days ago · 6 km deep · 99 km away
  8. 2.14 km NNE of Clearlake, California · 16514 days ago · 0 km deep · 85 km away
  9. 2.13 km WSW of Redwood Valley, California · 16513 days ago · 2 km deep · 30 km away
  10. 2.010 km E of Comptche, California · 16512 days ago · 6 km deep · 13 km away
  11. 2.18 km NNW of Redwood Valley, California · 16512 days ago · 1 km deep · 32 km away
  12. 1.818 km NE of Potter Valley, California · 16512 days ago · 7 km deep · 60 km away
  13. 2.29 km WSW of Cobb, California · 16511 days ago · 1 km deep · 75 km away
  14. 2.08 km NW of Redwood Valley, California · 16511 days ago · 2 km deep · 32 km away
  15. 1.822 km NE of Potter Valley, California · 16510 days ago · 11 km deep · 64 km away
  16. 1.87 km NNW of Redwood Valley, California · 16510 days ago · 5 km deep · 32 km away
  17. 2.18 km NE of Hidden Valley Lake, California · 16508 days ago · 8 km deep · 99 km away
  18. 1.54 km WSW of Cobb, California · 16508 days ago · 1 km deep · 80 km away
  19. 1.919 km ENE of Potter Valley, California · 16508 days ago · 9 km deep · 62 km away
  20. 1.824 km NE of Potter Valley, California · 16508 days ago · 12 km deep · 65 km away
  21. 1.88 km NW of Redwood Valley, California · 16508 days ago · 3 km deep · 32 km away
  22. 2.122 km WNW of Elk Creek, California · 16508 days ago · 6 km deep · 86 km away
  23. 1.56 km W of Cobb, California · 16507 days ago · 3 km deep · 76 km away
  24. 1.919 km ENE of Potter Valley, California · 16507 days ago · 11 km deep · 62 km away
  25. 1.52 km WSW of Redwood Valley, California · 16507 days ago · 6 km deep · 30 km away
  26. 1.56 km W of Cobb, California · 16505 days ago · 3 km deep · 77 km away
  27. 2.24 km WSW of Cobb, California · 16505 days ago · 1 km deep · 79 km away
  28. 1.99 km WSW of Cobb, California · 16503 days ago · 1 km deep · 75 km away
  29. 2.04 km WSW of Cobb, California · 16502 days ago · 1 km deep · 79 km away
  30. 2.17 km W of Cobb, California · 16501 days ago · 4 km deep · 76 km away
  31. 1.97 km WSW of Cobb, California · 16499 days ago · 2 km deep · 77 km away
  32. 1.55 km WSW of Cobb, California · 16499 days ago · 4 km deep · 79 km away
  33. 1.96 km W of Cobb, California · 16499 days ago · 3 km deep · 77 km away
  34. 1.76 km W of Cobb, California · 16499 days ago · 3 km deep · 77 km away
  35. 1.56 km W of Cobb, California · 16499 days ago · 2 km deep · 77 km away
  36. 2.04 km ESE of Calpella, California · 16499 days ago · 6 km deep · 35 km away
  37. 1.67 km E of Willits, California · 16498 days ago · 8 km deep · 38 km away
  38. 2.311 km N of Covelo, California · 16497 days ago · 0 km deep · 86 km away
  39. 2.04 km WSW of Cobb, California · 16496 days ago · 2 km deep · 80 km away
  40. 1.69 km WSW of Cobb, California · 16496 days ago · 1 km deep · 75 km away
  41. 2.210 km ESE of Potter Valley, California · 16496 days ago · -1 km deep · 51 km away
  42. 1.87 km WSW of Cobb, California · 16495 days ago · 1 km deep · 77 km away
  43. 1.8Northern California · 16494 days ago · 2 km deep · 75 km away
  44. 1.66 km WSW of Cobb, California · 16493 days ago · 0 km deep · 79 km away
  45. 1.96 km WSW of Cobb, California · 16493 days ago · 3 km deep · 77 km away
  46. 3.06 km WSW of Cobb, California · 16493 days ago · 4 km deep · 77 km away
  47. 1.86 km WSW of Cobb, California · 16493 days ago · 0 km deep · 78 km away
  48. 2.45 km WSW of Cobb, California · 16493 days ago · 1 km deep · 78 km away
  49. 1.56 km WSW of Cobb, California · 16493 days ago · 0 km deep · 78 km away
  50. 2.322 km WNW of Elk Creek, California · 16492 days ago · 7 km deep · 86 km away
  51. 1.76 km WSW of Cobb, California · 16492 days ago · 3 km deep · 77 km away
  52. 2.22 km ENE of Windsor, California · 16492 days ago · 1 km deep · 95 km away
  53. 1.512 km SSW of Laytonville, California · 16491 days ago · 1 km deep · 47 km away
  54. 1.54 km SSE of Potter Valley, California · 16491 days ago · 10 km deep · 43 km away
  55. 1.59 km WSW of Cobb, California · 16491 days ago · 2 km deep · 76 km away
  56. 2.522 km NE of Potter Valley, California · 16491 days ago · 12 km deep · 64 km away
  57. 1.86 km W of Cobb, California · 16491 days ago · 0 km deep · 76 km away
  58. 1.95 km SW of Cobb, California · 16490 days ago · 0 km deep · 80 km away
  59. 2.65 km SW of Cobb, California · 16490 days ago · 1 km deep · 80 km away
  60. 1.55 km SW of Cobb, California · 16490 days ago · -1 km deep · 80 km away

The first 60 of 115.

Before

  1. 1.71 km NNW of Boonville, California · 16518 days ago · 4 km deep · 22 km away
  2. 1.67 km NW of Redwood Valley, California · 16520 days ago · 7 km deep · 32 km away
  3. 1.62 km SE of Talmage, California · 16520 days ago · 5 km deep · 36 km away
  4. 2.05 km ESE of Talmage, California · 16521 days ago · 7 km deep · 40 km away
  5. 1.76 km WSW of Cobb, California · 16521 days ago · 1 km deep · 77 km away
  6. 1.97 km WNW of Philo, California · 16522 days ago · 6 km deep · 10 km away
  7. 2.64 km WSW of Cobb, California · 16522 days ago · 3 km deep · 79 km away
  8. 1.96 km W of Cobb, California · 16524 days ago · 4 km deep · 77 km away
  9. 2.11 km SW of Stonyford, California · 16524 days ago · 7 km deep · 90 km away
  10. 3.0Northern California · 16524 days ago · 4 km deep · 77 km away
  11. 1.68 km NE of Healdsburg, California · 16524 days ago · 6 km deep · 85 km away
  12. 1.66 km W of Cobb, California · 16524 days ago · 3 km deep · 77 km away
  13. 2.56 km W of Cobb, California · 16524 days ago · 4 km deep · 77 km away
  14. 1.78 km WSW of Cobb, California · 16525 days ago · 0 km deep · 76 km away
  15. 2.56 km WSW of Cobb, California · 16525 days ago · 0 km deep · 79 km away
  16. 1.87 km WSW of Cobb, California · 16525 days ago · 1 km deep · 77 km away
  17. 1.87 km W of Cobb, California · 16525 days ago · 1 km deep · 75 km away
  18. 1.69 km WSW of Cobb, California · 16526 days ago · 1 km deep · 75 km away
  19. 1.79 km WSW of Cobb, California · 16526 days ago · 2 km deep · 75 km away
  20. 2.34 km ESE of Clear Lake Riviera, California · 16527 days ago · -1 km deep · 81 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1065113. Read Wed, Sep 23, 2026, 7:44 AM UTC.