California earthquakes

M1.7 earthquake 5 km W of Cobb, California

A magnitude 1.7 earthquake struck 5 km W of Cobb, California on Fri, Nov 8, 1985, 3:00 PM PST (23:00 UTC), 1 km (0 mi) below the surface.

A larger quake followed: M2.0 26 km NE of Potter Valley, 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
1.7 (md), micro
Local time
UTC
1985-11-08 23:00:52 UTC
Depth
0.5 km (0.3 mi), shallow
Epicenter
38.822° N, 122.782° 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
±0.18
Depth from
From location
Station coverage gap
60°
Stations used
14

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 177 in the 60 days after this one and 0 in the 30 days before it.

After

  1. 2.026 km NE of Potter Valley, California · 14911 days ago · 7 km deep · 73 km away
  2. 1.98 km W of Cobb, California · 14911 days ago · 0 km deep · 3 km away
  3. 1.712 km WSW of Willits, California · 14910 days ago · 0 km deep · 84 km away
  4. 1.75 km W of Cobb, California · 14910 days ago · 1 km deep · 1 km away
  5. 1.96 km E of Calpella, California · 14910 days ago · 3 km deep · 54 km away
  6. 2.03 km ESE of Clear Lake Riviera, California · 14909 days ago · 4 km deep · 16 km away
  7. 1.67 km WSW of Cobb, California · 14909 days ago · 0 km deep · 3 km away
  8. 1.57 km WSW of Cobb, California · 14909 days ago · -1 km deep · 3 km away
  9. 2.07 km WSW of Cobb, California · 14909 days ago · 0 km deep · 3 km away
  10. 1.96 km W of Cobb, California · 14909 days ago · 3 km deep · 2 km away
  11. 2.68 km WSW of Cobb, California · 14909 days ago · 1 km deep · 4 km away
  12. 1.612 km NE of Clearlake, California · 14909 days ago · 6 km deep · 33 km away
  13. 1.55 km W of Cobb, California · 14909 days ago · 0 km deep · 0 km away
  14. 1.87 km WSW of Cobb, California · 14909 days ago · 0 km deep · 3 km away
  15. 1.64 km SW of Cobb, California · 14908 days ago · 1 km deep · 5 km away
  16. 1.97 km W of Cobb, California · 14908 days ago · 0 km deep · 2 km away
  17. 2.11 km WSW of Roseland, California · 14908 days ago · 6 km deep · 45 km away
  18. 1.77 km W of Cobb, California · 14908 days ago · 4 km deep · 2 km away
  19. 1.99 km WSW of Cobb, California · 14907 days ago · 2 km deep · 4 km away
  20. 2.321 km ENE of Clearlake, California · 14907 days ago · 6 km deep · 41 km away
  21. 1.58 km W of Cobb, California · 14907 days ago · 1 km deep · 4 km away
  22. 1.65 km WSW of Cobb, California · 14907 days ago · 0 km deep · 3 km away
  23. 1.65 km WSW of Cobb, California · 14907 days ago · 1 km deep · 1 km away
  24. 2.620 km ENE of Clearlake, California · 14907 days ago · 0 km deep · 39 km away
  25. 2.45 km WSW of Cobb, California · 14907 days ago · 1 km deep · 2 km away
  26. 2.45 km SW of Cobb, California · 14907 days ago · 1 km deep · 5 km away
  27. 2.73 km SW of Cobb, California · 14907 days ago · 1 km deep · 4 km away
  28. 2.9Northern California · 14906 days ago · 2 km deep · 4 km away
  29. 1.7Northern California · 14906 days ago · 2 km deep · 4 km away
  30. 1.96 km WNW of Cobb, California · 14906 days ago · 1 km deep · 1 km away
  31. 1.912 km NE of Windsor, California · 14906 days ago · 6 km deep · 22 km away
  32. 1.93 km NNE of Healdsburg, California · 14906 days ago · 6 km deep · 21 km away
  33. 2.18 km WSW of Cobb, California · 14906 days ago · 3 km deep · 4 km away
  34. 1.910 km ESE of Hidden Valley Lake, California · 14906 days ago · 5 km deep · 29 km away
  35. 1.614 km ESE of Hidden Valley Lake, California · 14905 days ago · -1 km deep · 33 km away
  36. 1.57 km W of Cobb, California · 14905 days ago · 3 km deep · 3 km away
  37. 1.88 km N of Upper Lake, California · 14905 days ago · 6 km deep · 48 km away
  38. 2.118 km NNW of Cazadero, California · 14905 days ago · 1 km deep · 37 km away
  39. 1.75 km NNE of Guerneville, California · 14904 days ago · 2 km deep · 35 km away
  40. 1.94 km WNW of Cobb, California · 14904 days ago · 2 km deep · 2 km away
  41. 1.64 km S of Cobb, California · 14904 days ago · 2 km deep · 7 km away
  42. 1.65 km WSW of Cobb, California · 14904 days ago · 0 km deep · 2 km away
  43. 1.810 km WSW of Cobb, California · 14904 days ago · 1 km deep · 5 km away
  44. 1.85 km W of Cobb, California · 14904 days ago · 0 km deep · 1 km away
  45. 2.79 km W of Cobb, California · 14904 days ago · -1 km deep · 4 km away
  46. 1.99 km W of Cobb, California · 14904 days ago · 1 km deep · 5 km away
  47. 1.75 km SW of Cobb, California · 14903 days ago · 0 km deep · 5 km away
  48. 2.24 km SW of Cobb, California · 14903 days ago · 1 km deep · 5 km away
  49. 1.85 km WSW of Cobb, California · 14903 days ago · 1 km deep · 3 km away
  50. 1.66 km W of Cobb, California · 14903 days ago · 3 km deep · 1 km away
  51. 2.07 km W of Cobb, California · 14902 days ago · 1 km deep · 2 km away
  52. 1.88 km W of Cobb, California · 14902 days ago · 0 km deep · 3 km away
  53. 1.88 km W of Cobb, California · 14902 days ago · -1 km deep · 3 km away
  54. 2.38 km W of Cobb, California · 14901 days ago · 0 km deep · 3 km away
  55. 1.86 km W of Cobb, California · 14901 days ago · 1 km deep · 2 km away
  56. 2.06 km W of Cobb, California · 14900 days ago · 2 km deep · 2 km away
  57. 1.66 km W of Cobb, California · 14900 days ago · 2 km deep · 2 km away
  58. 1.68 km W of Cobb, California · 14900 days ago · 1 km deep · 3 km away
  59. 2.614 km NNW of Moskowite Corner, California · 14900 days ago · 3 km deep · 53 km away
  60. 3.15 km SW of Cobb, California · 14899 days ago · 1 km deep · 4 km away

The first 60 of 177.

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc59698. Read Tue, Sep 22, 2026, 4:09 PM UTC.