California earthquakes

M2.1 earthquake 8 km W of Cobb, California

A magnitude 2.1 earthquake struck 8 km W of Cobb, California on Fri, Jan 31, 1986, 8:41 PM PST (04:41 UTC), 1 km (1 mi) below the surface.

A larger quake followed: M3.6 7 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
1986-02-01 04:41:19 UTC
Depth
1.4 km (0.9 mi), shallow
Epicenter
38.810° N, 122.815° 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
±0.14
Depth from
From location
Station coverage gap
44°
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: 174 in the 60 days after this one and 102 in the 30 days before it.

After

  1. 2.35 km SW of Cobb, California · 14851 days ago · 0 km deep · 6 km away
  2. 1.79 km NE of Cloverdale, California · 14850 days ago · 3 km deep · 14 km away
  3. 2.04 km W of Cobb, California · 14850 days ago · 1 km deep · 4 km away
  4. 1.67 km W of Cobb, California · 14850 days ago · 4 km deep · 1 km away
  5. 1.94 km WSW of Cobb, California · 14850 days ago · 1 km deep · 4 km away
  6. 1.610 km WSW of Cobb, California · 14850 days ago · 1 km deep · 3 km away
  7. 2.58 km WSW of Cobb, California · 14850 days ago · 3 km deep · 1 km away
  8. 1.56 km W of Cobb, California · 14850 days ago · 3 km deep · 2 km away
  9. 1.64 km W of Hopland, California · 14850 days ago · 4 km deep · 36 km away
  10. 3.34 km W of Cobb, California · 14848 days ago · 0 km deep · 3 km away
  11. 1.65 km WNW of Cobb, California · 14848 days ago · 1 km deep · 4 km away
  12. 1.67 km WSW of Cobb, California · 14848 days ago · 1 km deep · 1 km away
  13. 1.68 km W of Cobb, California · 14848 days ago · 1 km deep · 1 km away
  14. 2.29 km WSW of Cobb, California · 14847 days ago · 2 km deep · 2 km away
  15. 2.318 km NE of Potter Valley, California · 14847 days ago · 5 km deep · 72 km away
  16. 2.09 km SSE of Guinda, California · 14847 days ago · 4 km deep · 58 km away
  17. 2.214 km S of Guinda, California · 14847 days ago · 11 km deep · 55 km away
  18. 1.916 km N of Potter Valley, California · 14846 days ago · 5 km deep · 76 km away
  19. 1.67 km W of Cobb, California · 14846 days ago · 1 km deep · 2 km away
  20. 1.56 km ESE of Lower Lake, California · 14846 days ago · 2 km deep · 26 km away
  21. 1.712 km ENE of Lower Lake, California · 14846 days ago · 2 km deep · 33 km away
  22. 2.17 km E of Lower Lake, California · 14846 days ago · 2 km deep · 27 km away
  23. 3.07 km E of Lower Lake, California · 14846 days ago · -1 km deep · 27 km away
  24. 1.711 km ENE of Lower Lake, California · 14846 days ago · 2 km deep · 32 km away
  25. 2.79 km NNE of Hidden Valley Lake, California · 14846 days ago · 5 km deep · 27 km away
  26. 3.48 km E of Lower Lake, California · 14846 days ago · 9 km deep · 28 km away
  27. 1.77 km E of Lower Lake, California · 14846 days ago · 2 km deep · 27 km away
  28. 1.75 km SW of Cobb, California · 14846 days ago · 0 km deep · 5 km away
  29. 1.816 km ENE of Clearlake, California · 14846 days ago · 10 km deep · 39 km away
  30. 1.58 km W of Cobb, California · 14845 days ago · 1 km deep · 1 km away
  31. 2.37 km WSW of Cobb, California · 14845 days ago · 1 km deep · 1 km away
  32. 2.39 km W of Cobb, California · 14844 days ago · 1 km deep · 1 km away
  33. 1.75 km SW of Cobb, California · 14844 days ago · 0 km deep · 5 km away
  34. 2.37 km W of Cobb, California · 14844 days ago · 4 km deep · 1 km away
  35. 1.75 km SW of Cobb, California · 14843 days ago · 0 km deep · 4 km away
  36. 2.06 km W of Cobb, California · 14843 days ago · 3 km deep · 2 km away
  37. 1.67 km W of Cobb, California · 14843 days ago · 3 km deep · 1 km away
  38. 1.69 km E of Lower Lake, California · 14843 days ago · 4 km deep · 30 km away
  39. 1.86 km WSW of Cobb, California · 14843 days ago · 3 km deep · 2 km away
  40. 2.47 km E of Lower Lake, California · 14843 days ago · 4 km deep · 27 km away
  41. 2.66 km W of Cobb, California · 14842 days ago · 3 km deep · 2 km away
  42. 1.86 km W of Cobb, California · 14842 days ago · 3 km deep · 2 km away
  43. 2.27 km ESE of Lower Lake, California · 14841 days ago · 4 km deep · 26 km away
  44. 2.97 km E of Lower Lake, California · 14841 days ago · -1 km deep · 27 km away
  45. 1.66 km WNW of Cobb, California · 14841 days ago · 1 km deep · 3 km away
  46. 1.57 km W of Cobb, California · 14841 days ago · 1 km deep · 3 km away
  47. 1.55 km SW of Cobb, California · 14840 days ago · 1 km deep · 5 km away
  48. 2.18 km W of Cobb, California · 14840 days ago · 1 km deep · 1 km away
  49. 2.06 km W of Cobb, California · 14840 days ago · 1 km deep · 3 km away
  50. 2.417 km WSW of Elk Creek, California · 14840 days ago · 3 km deep · 80 km away
  51. 1.67 km WSW of Cobb, California · 14839 days ago · 1 km deep · 1 km away
  52. 1.64 km S of Cobb, California · 14839 days ago · 0 km deep · 8 km away
  53. 1.64 km W of Cobb, California · 14838 days ago · 0 km deep · 4 km away
  54. 2.78 km WSW of Cobb, California · 14838 days ago · 2 km deep · 1 km away
  55. 1.66 km W of Cobb, California · 14838 days ago · 3 km deep · 2 km away
  56. 2.64 km SW of Cobb, California · 14837 days ago · 3 km deep · 5 km away
  57. 2.34 km WSW of Cobb, California · 14836 days ago · 4 km deep · 3 km away
  58. 2.99 km W of Cobb, California · 14836 days ago · 2 km deep · 2 km away
  59. 3.24 km WSW of Cobb, California · 14836 days ago · 3 km deep · 3 km away
  60. 3.57 km NW of Brooktrails, California · 14834 days ago · -1 km deep · 93 km away

The first 60 of 174.

Before

  1. 1.66 km WSW of Cobb, California · 14852 days ago · 1 km deep · 2 km away
  2. 2.57 km WSW of Cobb, California · 14852 days ago · 1 km deep · 1 km away
  3. 2.27 km WSW of Cobb, California · 14853 days ago · 1 km deep · 2 km away
  4. 2.52 km SE of Clear Lake Riviera, California · 14853 days ago · 2 km deep · 18 km away
  5. 1.75 km WNW of Cobb, California · 14853 days ago · 1 km deep · 4 km away
  6. 1.54 km WSW of Cobb, California · 14854 days ago · 0 km deep · 4 km away
  7. 1.87 km WSW of Cobb, California · 14854 days ago · 0 km deep · 2 km away
  8. 1.74 km W of Cobb, California · 14854 days ago · -1 km deep · 4 km away
  9. 1.66 km W of Cobb, California · 14856 days ago · 3 km deep · 1 km away
  10. 2.23 km SSW of Cobb, California · 14857 days ago · 1 km deep · 6 km away
  11. 3.35 km SW of Cobb, California · 14857 days ago · 0 km deep · 4 km away
  12. 2.25 km SW of Cobb, California · 14857 days ago · 0 km deep · 5 km away
  13. 2.07 km W of Cobb, California · 14857 days ago · -1 km deep · 2 km away
  14. 2.17 km W of Cobb, CA · 14857 days ago · 0 km deep · 2 km away
  15. 1.56 km WSW of Cobb, California · 14858 days ago · 3 km deep · 2 km away
  16. 1.77 km WSW of Cobb, California · 14858 days ago · 2 km deep · 2 km away
  17. 1.67 km SW of Cloverdale, California · 14858 days ago · 28 km deep · 24 km away
  18. 1.64 km WNW of Cobb, California · 14858 days ago · 0 km deep · 5 km away
  19. 1.77 km W of Cobb, California · 14859 days ago · 3 km deep · 0 km away
  20. 1.67 km W of Cobb, California · 14859 days ago · 3 km deep · 1 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc65291. Read Wed, Sep 30, 2026, 5:18 PM UTC.