California earthquakes

M1.9 earthquake 7 km WSW of Cobb, California

A magnitude 1.9 earthquake struck 7 km WSW of Cobb, California on Wed, Nov 26, 1986, 10:31 AM PST (18:31 UTC), 4 km (2 mi) below the surface.

A larger quake followed: M2.9 8 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
1.9 (md), micro
Local time
UTC
1986-11-26 18:31:43 UTC
Depth
3.7 km (2.3 mi), shallow
Epicenter
38.797° N, 122.806° 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
±0.16
Depth from
From location
Station coverage gap
50°
Stations used
19

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 181 in the 60 days after this one and 0 in the 30 days before it.

After

  1. 2.98 km E of Hidden Valley Lake, California · 14526 days ago · 9 km deep · 30 km away
  2. 1.88 km ESE of Hidden Valley Lake, California · 14526 days ago · 7 km deep · 29 km away
  3. 1.88 km ESE of Hidden Valley Lake, California · 14526 days ago · 7 km deep · 30 km away
  4. 1.88 km E of Hidden Valley Lake, California · 14526 days ago · 6 km deep · 30 km away
  5. 2.67 km E of Hidden Valley Lake, California · 14526 days ago · 7 km deep · 29 km away
  6. 2.18 km E of Hidden Valley Lake, California · 14526 days ago · 10 km deep · 30 km away
  7. 2.16 km W of Cobb, California · 14526 days ago · -1 km deep · 2 km away
  8. 1.67 km W of Cobb, California · 14526 days ago · 3 km deep · 2 km away
  9. 1.68 km ESE of Hidden Valley Lake, California · 14526 days ago · 7 km deep · 30 km away
  10. 1.68 km W of Cobb, California · 14526 days ago · -1 km deep · 3 km away
  11. 1.89 km ESE of Hidden Valley Lake, California · 14525 days ago · 7 km deep · 30 km away
  12. 2.04 km SW of Cobb, California · 14525 days ago · 1 km deep · 4 km away
  13. 2.09 km ESE of Hidden Valley Lake, California · 14525 days ago · 7 km deep · 30 km away
  14. 1.88 km ESE of Hidden Valley Lake, California · 14525 days ago · 7 km deep · 30 km away
  15. 2.88 km E of Hidden Valley Lake, California · 14525 days ago · 11 km deep · 30 km away
  16. 1.810 km NNE of Angwin, California · 14525 days ago · 2 km deep · 38 km away
  17. 1.62 km E of Larkfield-Wikiup, California · 14525 days ago · 8 km deep · 33 km away
  18. 3.09 km ESE of Hidden Valley Lake, California · 14525 days ago · 8 km deep · 31 km away
  19. 2.77 km W of Cobb, California · 14525 days ago · 1 km deep · 2 km away
  20. 2.57 km WSW of Cobb, California · 14525 days ago · 1 km deep · 1 km away
  21. 2.57 km E of Hidden Valley Lake, California · 14525 days ago · 9 km deep · 29 km away
  22. 1.78 km ESE of Hidden Valley Lake, California · 14524 days ago · 7 km deep · 30 km away
  23. 1.88 km ESE of Hidden Valley Lake, California · 14524 days ago · 7 km deep · 30 km away
  24. 1.718 km ENE of Potter Valley, California · 14524 days ago · 5 km deep · 63 km away
  25. 2.76 km SW of Cobb, California · 14524 days ago · 0 km deep · 3 km away
  26. 1.77 km E of Geyserville, California · 14523 days ago · 2 km deep · 11 km away
  27. 1.98 km ESE of Hidden Valley Lake, California · 14523 days ago · 7 km deep · 30 km away
  28. 1.69 km NW of Cobb, California · 14523 days ago · 1 km deep · 9 km away
  29. 1.98 km ESE of Hidden Valley Lake, California · 14523 days ago · 7 km deep · 30 km away
  30. 1.96 km ENE of Sonoma, California · 14522 days ago · 10 km deep · 65 km away
  31. 1.66 km W of Cobb, California · 14522 days ago · 3 km deep · 3 km away
  32. 2.5Northern California · 14522 days ago · 9 km deep · 77 km away
  33. 1.87 km WSW of Cobb, California · 14521 days ago · 0 km deep · 1 km away
  34. 2.58 km E of Willits, California · 14521 days ago · 8 km deep · 78 km away
  35. 1.88 km ESE of Hidden Valley Lake, California · 14521 days ago · 6 km deep · 30 km away
  36. 2.17 km ENE of Napa, California · 14521 days ago · 4 km deep · 73 km away
  37. 1.86 km N of Green Valley, California · 14521 days ago · 10 km deep · 77 km away
  38. 2.16 km SW of Cobb, California · 14521 days ago · 1 km deep · 3 km away
  39. 1.66 km W of Cobb, California · 14521 days ago · 3 km deep · 3 km away
  40. 1.75 km W of Cobb, California · 14521 days ago · -1 km deep · 4 km away
  41. 2.06 km W of Cobb, California · 14520 days ago · 0 km deep · 4 km away
  42. 1.86 km WNW of Cobb, California · 14520 days ago · -1 km deep · 4 km away
  43. 1.56 km W of Cobb, California · 14520 days ago · 1 km deep · 4 km away
  44. 1.76 km W of Cobb, California · 14520 days ago · -1 km deep · 3 km away
  45. 1.98 km W of Cobb, California · 14520 days ago · 0 km deep · 3 km away
  46. 1.65 km SW of Cobb, California · 14520 days ago · -1 km deep · 2 km away
  47. 1.57 km E of Hidden Valley Lake, California · 14520 days ago · 8 km deep · 29 km away
  48. 1.67 km W of Hopland, California · 14519 days ago · 4 km deep · 39 km away
  49. 1.77 km W of Cobb, California · 14519 days ago · -1 km deep · 4 km away
  50. 1.95 km WSW of Cobb, California · 14519 days ago · 1 km deep · 3 km away
  51. 1.614 km ESE of Hidden Valley Lake, California · 14519 days ago · 1 km deep · 36 km away
  52. 2.19 km W of Cobb, California · 14519 days ago · 0 km deep · 3 km away
  53. 1.96 km WNW of Cobb, California · 14519 days ago · 0 km deep · 4 km away
  54. 2.15 km ENE of Willits, California · 14518 days ago · 2 km deep · 83 km away
  55. 1.75 km ENE of Willits, California · 14518 days ago · 2 km deep · 82 km away
  56. 1.65 km SW of Cobb, California · 14518 days ago · -1 km deep · 4 km away
  57. 2.07 km E of Willits, California · 14518 days ago · 7 km deep · 79 km away
  58. 2.44 km WNW of Cobb, California · 14518 days ago · 0 km deep · 5 km away
  59. 2.49 km ESE of Hidden Valley Lake, California · 14518 days ago · 8 km deep · 30 km away
  60. 2.39 km WSW of Cobb, California · 14517 days ago · 2 km deep · 2 km away

The first 60 of 181.

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc88781. Read Tue, Sep 22, 2026, 8:51 AM UTC.