California earthquakes

M2.1 earthquake 6 km W of Cobb, California

A magnitude 2.1 earthquake struck 6 km W of Cobb, California on Tue, Nov 11, 1986, 4:19 PM PST (00:19 UTC), 2 km (1 mi) below the surface.

A larger quake followed: M3.0 6 km W of Cobb, California. This one was a foreshock.

Cobb forecastMore in California

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
1986-11-12 00:19:08 UTC
Depth
1.6 km (1.0 mi), shallow
Epicenter
38.816° N, 122.798° 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, 0.3 km in depth
Magnitude uncertainty
±0.08
Depth from
From location
Station coverage gap
85°
Stations used
16

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 182 in the 60 days after this one and 0 in the 30 days before it.

After

  1. 1.97 km WSW of Cobb, California · 14545 days ago · 4 km deep · 2 km away
  2. 1.69 km W of Cobb, California · 14544 days ago · 0 km deep · 3 km away
  3. 3.06 km W of Cobb, California · 14543 days ago · 3 km deep · 1 km away
  4. 1.69 km ESE of Hidden Valley Lake, California · 14543 days ago · 7 km deep · 30 km away
  5. 1.77 km W of Cobb, California · 14543 days ago · 3 km deep · 1 km away
  6. 1.621 km ENE of Potter Valley, California · 14542 days ago · 5 km deep · 65 km away
  7. 1.66 km W of Cobb, California · 14542 days ago · 3 km deep · 1 km away
  8. 2.14 km SW of Cobb, California · 14542 days ago · 1 km deep · 5 km away
  9. 1.68 km WNW of Cobb, California · 14541 days ago · 0 km deep · 4 km away
  10. 1.94 km SW of Clearlake, California · 14541 days ago · 3 km deep · 18 km away
  11. 1.76 km SW of Lower Lake, California · 14541 days ago · -1 km deep · 13 km away
  12. 1.97 km W of Cobb, California · 14540 days ago · 1 km deep · 1 km away
  13. 1.67 km W of Cobb, California · 14540 days ago · -1 km deep · 1 km away
  14. 1.89 km NW of Elk Creek, California · 14540 days ago · 4 km deep · 95 km away
  15. 2.05 km SW of Cobb, California · 14540 days ago · 1 km deep · 4 km away
  16. 2.010 km ESE of Hidden Valley Lake, California · 14540 days ago · 7 km deep · 31 km away
  17. 2.75 km WSW of Cobb, California · 14539 days ago · -1 km deep · 2 km away
  18. 1.76 km W of Cobb, California · 14538 days ago · 3 km deep · 1 km away
  19. 2.67 km NE of Willits, California · 14537 days ago · 7 km deep · 83 km away
  20. 1.98 km W of Cobb, California · 14537 days ago · 1 km deep · 1 km away
  21. 1.73 km WSW of Cobb, California · 14537 days ago · -1 km deep · 3 km away
  22. 1.610 km ESE of Hidden Valley Lake, California · 14536 days ago · 6 km deep · 31 km away
  23. 1.910 km ESE of Hidden Valley Lake, California · 14536 days ago · 6 km deep · 31 km away
  24. 1.94 km WSW of Cobb, California · 14536 days ago · 2 km deep · 2 km away
  25. 1.76 km W of Cobb, California · 14536 days ago · 0 km deep · 1 km away
  26. 1.66 km W of Cobb, California · 14536 days ago · 2 km deep · 1 km away
  27. 1.79 km W of Cobb, California · 14535 days ago · 2 km deep · 3 km away
  28. 1.84 km WNW of Cobb, California · 14534 days ago · 1 km deep · 4 km away
  29. 1.66 km WSW of Cobb, California · 14534 days ago · 0 km deep · 1 km away
  30. 1.58 km W of Cobb, California · 14533 days ago · 1 km deep · 2 km away
  31. 2.26 km N of Green Valley, California · 14533 days ago · 10 km deep · 78 km away
  32. 1.66 km SW of Cobb, California · 14532 days ago · -1 km deep · 4 km away
  33. 1.79 km W of Cobb, California · 14532 days ago · 1 km deep · 3 km away
  34. 1.87 km N of Green Valley, California · 14532 days ago · 10 km deep · 78 km away
  35. 2.26 km W of Cobb, California · 14531 days ago · 1 km deep · 0 km away
  36. 1.64 km WSW of Cobb, California · 14531 days ago · 1 km deep · 3 km away
  37. 1.66 km W of Cobb, California · 14530 days ago · 1 km deep · 1 km away
  38. 1.617 km ENE of Potter Valley, California · 14530 days ago · 10 km deep · 64 km away
  39. 1.86 km S of Cobb, California · 14530 days ago · -1 km deep · 9 km away
  40. 1.64 km WSW of Cobb, California · 14530 days ago · 1 km deep · 3 km away
  41. 1.65 km E of Healdsburg, California · 14529 days ago · 2 km deep · 24 km away
  42. 1.920 km ENE of Potter Valley, California · 14529 days ago · -1 km deep · 63 km away
  43. 3.3Northern California · 14528 days ago · 10 km deep · 78 km away
  44. 1.54 km SW of Cobb, California · 14528 days ago · 3 km deep · 3 km away
  45. 1.78 km ESE of Hidden Valley Lake, California · 14527 days ago · 8 km deep · 29 km away
  46. 1.79 km ESE of Hidden Valley Lake, California · 14527 days ago · 8 km deep · 30 km away
  47. 1.810 km ESE of Hidden Valley Lake, California · 14527 days ago · 9 km deep · 31 km away
  48. 1.85 km SSW of Cobb, California · 14527 days ago · 1 km deep · 7 km away
  49. 2.79 km E of Hidden Valley Lake, California · 14526 days ago · 11 km deep · 30 km away
  50. 3.38 km E of Hidden Valley Lake, California · 14526 days ago · 9 km deep · 29 km away
  51. 3.38 km E of Hidden Valley Lake, California · 14526 days ago · 9 km deep · 30 km away
  52. 2.98 km E of Hidden Valley Lake, California · 14526 days ago · 7 km deep · 29 km away
  53. 2.58 km ESE of Hidden Valley Lake, California · 14526 days ago · 7 km deep · 29 km away
  54. 1.99 km ESE of Hidden Valley Lake, California · 14526 days ago · 7 km deep · 30 km away
  55. 1.89 km ESE of Hidden Valley Lake, California · 14526 days ago · 7 km deep · 30 km away
  56. 1.57 km E of Hidden Valley Lake, California · 14526 days ago · 8 km deep · 29 km away
  57. 2.29 km ESE of Hidden Valley Lake, California · 14526 days ago · 8 km deep · 30 km away
  58. 1.78 km E of Hidden Valley Lake, California · 14526 days ago · 8 km deep · 29 km away
  59. 1.58 km E of Hidden Valley Lake, California · 14526 days ago · 7 km deep · 29 km away
  60. 2.98 km E of Hidden Valley Lake, California · 14526 days ago · 9 km deep · 29 km away

The first 60 of 182.

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc87800. Read Tue, Sep 22, 2026, 9:14 AM UTC.