California earthquakes

M2.6 earthquake 7 km W of Cobb, California

A magnitude 2.6 earthquake struck 7 km W of Cobb, California on Sun, Nov 9, 1986, 4:28 AM PST (12:28 UTC), 3 km (2 mi) below the surface.

A larger quake followed: M2.7 12 km E of Hidden Valley Lake, 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
2.6 (md), micro
Local time
UTC
1986-11-09 12:28:05 UTC
Depth
3.2 km (2.0 mi), shallow
Epicenter
38.810° N, 122.813° 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, 0.4 km in depth
Magnitude uncertainty
±0.17
Depth from
From location
Station coverage gap
50°
Stations used
24

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 183 in the 60 days after this one and 0 in the 30 days before it.

After

  1. 2.712 km E of Hidden Valley Lake, California · 14549 days ago · 13 km deep · 34 km away
  2. 1.911 km ESE of Hidden Valley Lake, California · 14549 days ago · 6 km deep · 32 km away
  3. 1.922 km NNE of Upper Lake, California · 14549 days ago · 0 km deep · 61 km away
  4. 2.17 km WSW of Cobb, California · 14548 days ago · 0 km deep · 1 km away
  5. 2.46 km W of Cobb, California · 14548 days ago · 2 km deep · 2 km away
  6. 2.67 km WSW of Cobb, California · 14548 days ago · 0 km deep · 1 km away
  7. 2.38 km W of Cobb, California · 14547 days ago · 4 km deep · 1 km away
  8. 1.811 km E of Hidden Valley Lake, California · 14547 days ago · 11 km deep · 33 km away
  9. 2.39 km W of Cobb, California · 14547 days ago · 0 km deep · 2 km away
  10. 2.05 km W of Cobb, California · 14546 days ago · 1 km deep · 3 km away
  11. 1.510 km ESE of Hidden Valley Lake, California · 14546 days ago · 7 km deep · 31 km away
  12. 1.85 km SW of Cobb, California · 14545 days ago · 2 km deep · 5 km away
  13. 2.35 km ENE of Willits, California · 14545 days ago · 1 km deep · 81 km away
  14. 1.97 km WSW of Cobb, California · 14545 days ago · 4 km deep · 2 km away
  15. 1.69 km W of Cobb, California · 14544 days ago · 0 km deep · 2 km away
  16. 3.06 km W of Cobb, California · 14543 days ago · 3 km deep · 2 km away
  17. 1.69 km ESE of Hidden Valley Lake, California · 14543 days ago · 7 km deep · 32 km away
  18. 1.77 km W of Cobb, California · 14543 days ago · 3 km deep · 0 km away
  19. 1.621 km ENE of Potter Valley, California · 14542 days ago · 5 km deep · 66 km away
  20. 1.66 km W of Cobb, California · 14542 days ago · 3 km deep · 2 km away
  21. 2.14 km SW of Cobb, California · 14542 days ago · 1 km deep · 6 km away
  22. 1.68 km WNW of Cobb, California · 14541 days ago · 0 km deep · 4 km away
  23. 1.94 km SW of Clearlake, California · 14541 days ago · 3 km deep · 19 km away
  24. 1.76 km SW of Lower Lake, California · 14541 days ago · -1 km deep · 14 km away
  25. 1.97 km W of Cobb, California · 14540 days ago · 1 km deep · 1 km away
  26. 1.67 km W of Cobb, California · 14540 days ago · -1 km deep · 1 km away
  27. 1.89 km NW of Elk Creek, California · 14540 days ago · 4 km deep · 96 km away
  28. 2.05 km SW of Cobb, California · 14540 days ago · 1 km deep · 4 km away
  29. 2.010 km ESE of Hidden Valley Lake, California · 14540 days ago · 7 km deep · 32 km away
  30. 2.75 km WSW of Cobb, California · 14539 days ago · -1 km deep · 3 km away
  31. 1.76 km W of Cobb, California · 14538 days ago · 3 km deep · 2 km away
  32. 2.67 km NE of Willits, California · 14537 days ago · 7 km deep · 83 km away
  33. 1.98 km W of Cobb, California · 14537 days ago · 1 km deep · 1 km away
  34. 1.73 km WSW of Cobb, California · 14537 days ago · -1 km deep · 5 km away
  35. 1.610 km ESE of Hidden Valley Lake, California · 14536 days ago · 6 km deep · 32 km away
  36. 1.910 km ESE of Hidden Valley Lake, California · 14536 days ago · 6 km deep · 32 km away
  37. 1.94 km WSW of Cobb, California · 14536 days ago · 2 km deep · 3 km away
  38. 1.76 km W of Cobb, California · 14536 days ago · 0 km deep · 2 km away
  39. 1.66 km W of Cobb, California · 14536 days ago · 2 km deep · 2 km away
  40. 1.79 km W of Cobb, California · 14535 days ago · 2 km deep · 2 km away
  41. 1.84 km WNW of Cobb, California · 14534 days ago · 1 km deep · 5 km away
  42. 1.66 km WSW of Cobb, California · 14534 days ago · 0 km deep · 1 km away
  43. 1.58 km W of Cobb, California · 14533 days ago · 1 km deep · 2 km away
  44. 2.26 km N of Green Valley, California · 14533 days ago · 10 km deep · 79 km away
  45. 1.66 km SW of Cobb, California · 14532 days ago · -1 km deep · 4 km away
  46. 1.79 km W of Cobb, California · 14532 days ago · 1 km deep · 2 km away
  47. 1.87 km N of Green Valley, California · 14532 days ago · 10 km deep · 78 km away
  48. 2.26 km W of Cobb, California · 14531 days ago · 1 km deep · 2 km away
  49. 1.64 km WSW of Cobb, California · 14531 days ago · 1 km deep · 4 km away
  50. 1.66 km W of Cobb, California · 14530 days ago · 1 km deep · 2 km away
  51. 1.617 km ENE of Potter Valley, California · 14530 days ago · 10 km deep · 65 km away
  52. 1.86 km S of Cobb, California · 14530 days ago · -1 km deep · 9 km away
  53. 1.64 km WSW of Cobb, California · 14530 days ago · 1 km deep · 4 km away
  54. 1.65 km E of Healdsburg, California · 14529 days ago · 2 km deep · 23 km away
  55. 1.920 km ENE of Potter Valley, California · 14529 days ago · -1 km deep · 64 km away
  56. 3.3Northern California · 14528 days ago · 10 km deep · 78 km away
  57. 1.54 km SW of Cobb, California · 14528 days ago · 3 km deep · 4 km away
  58. 1.78 km ESE of Hidden Valley Lake, California · 14527 days ago · 8 km deep · 30 km away
  59. 1.79 km ESE of Hidden Valley Lake, California · 14527 days ago · 8 km deep · 31 km away
  60. 1.810 km ESE of Hidden Valley Lake, California · 14527 days ago · 9 km deep · 32 km away

The first 60 of 183.

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc87582. Read Tue, Sep 22, 2026, 9:10 AM UTC.