California earthquakes

M1.7 earthquake 7 km WSW of Cobb, California

A magnitude 1.7 earthquake struck 7 km WSW of Cobb, California on Sun, Oct 12, 1986, 9:15 AM PDT (16:15 UTC), 4 km (3 mi) below the surface.

A larger quake followed: M3.7 5 km SW 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
1.7 (md), micro
Local time
UTC
1986-10-12 16:15:55 UTC
Depth
4.2 km (2.6 mi), shallow
Epicenter
38.794° 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 0.3 km horizontally, 0.5 km in depth
Magnitude uncertainty
±0.18
Depth from
From location
Station coverage gap
98°
Stations used
11

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 147 in the 60 days after this one and 81 in the 30 days before it.

After

  1. 1.57 km W of Cobb, California · 14596 days ago · 2 km deep · 2 km away
  2. 1.77 km W of Cobb, California · 14595 days ago · 3 km deep · 2 km away
  3. 2.05 km WSW of Cobb, California · 14593 days ago · -1 km deep · 3 km away
  4. 1.63 km W of Geyserville, California · 14591 days ago · 2 km deep · 15 km away
  5. 1.810 km ENE of Hidden Valley Lake, California · 14591 days ago · 5 km deep · 31 km away
  6. 1.98 km NNE of Geyserville, California · 14590 days ago · 13 km deep · 5 km away
  7. 2.67 km W of Cobb, California · 14590 days ago · 4 km deep · 3 km away
  8. 1.818 km NNE of Upper Lake, California · 14590 days ago · 0 km deep · 57 km away
  9. 2.218 km NNE of Upper Lake, California · 14590 days ago · 7 km deep · 57 km away
  10. 1.61 km WSW of Kelseyville, California · 14590 days ago · 3 km deep · 21 km away
  11. 1.611 km N of Cloverdale, California · 14590 days ago · 1 km deep · 21 km away
  12. 2.86 km W of Cobb, California · 14590 days ago · 4 km deep · 3 km away
  13. 1.96 km W of Cobb, California · 14590 days ago · 3 km deep · 3 km away
  14. 2.67 km NNE of Hopland, California · 14589 days ago · 2 km deep · 36 km away
  15. 1.99 km WSW of Cobb, California · 14589 days ago · 1 km deep · 2 km away
  16. 1.86 km W of Cobb, California · 14589 days ago · 3 km deep · 3 km away
  17. 2.35 km SW of Cobb, California · 14588 days ago · 1 km deep · 4 km away
  18. 1.98 km E of Lower Lake, California · 14588 days ago · 1 km deep · 29 km away
  19. 2.119 km ENE of Brooktrails, California · 14588 days ago · 4 km deep · 88 km away
  20. 2.19 km WSW of Cobb, California · 14588 days ago · -1 km deep · 1 km away
  21. 2.26 km WSW of Cobb, California · 14587 days ago · 3 km deep · 2 km away
  22. 1.7Northern California · 14586 days ago · 1 km deep · 5 km away
  23. 1.85 km W of Cobb, California · 14585 days ago · 2 km deep · 4 km away
  24. 2.010 km SSE of Moskowite Corner, California · 14584 days ago · 4 km deep · 75 km away
  25. 1.97 km WSW of Cobb, California · 14584 days ago · 1 km deep · 1 km away
  26. 1.67 km WSW of Cobb, California · 14584 days ago · 2 km deep · 1 km away
  27. 1.65 km WSW of Cobb, California · 14583 days ago · 0 km deep · 2 km away
  28. 2.07 km ENE of Clearlake, California · 14582 days ago · 13 km deep · 31 km away
  29. 3.15 km W of Cobb, California · 14580 days ago · 1 km deep · 4 km away
  30. 1.714 km E of Angwin, California · 14580 days ago · 5 km deep · 50 km away
  31. 1.718 km S of Covelo, California · 14580 days ago · 4 km deep · 100 km away
  32. 2.27 km WSW of Cobb, California · 14579 days ago · 0 km deep · 1 km away
  33. 1.62 km WNW of Sea Ranch, California · 14579 days ago · 3 km deep · 59 km away
  34. 1.67 km W of Cobb, California · 14578 days ago · 6 km deep · 3 km away
  35. 1.54 km WNW of Cobb, California · 14577 days ago · -1 km deep · 6 km away
  36. 3.02 km SW of Cobb, California · 14577 days ago · 2 km deep · 6 km away
  37. 1.64 km WSW of Cobb, California · 14577 days ago · 2 km deep · 3 km away
  38. 2.08 km NNE of Brooktrails, California · 14577 days ago · 19 km deep · 94 km away
  39. 2.110 km NNW of Redwood Valley, California · 14576 days ago · 4 km deep · 73 km away
  40. 1.74 km WSW of Cobb, California · 14576 days ago · 0 km deep · 3 km away
  41. 2.06 km NW of Cobb, California · 14575 days ago · -1 km deep · 8 km away
  42. 1.64 km WSW of Clear Lake Riviera, California · 14574 days ago · 0 km deep · 17 km away
  43. 1.68 km W of Cobb, California · 14574 days ago · 1 km deep · 4 km away
  44. 2.121 km NE of Potter Valley, California · 14573 days ago · 10 km deep · 76 km away
  45. 2.16 km WSW of Cobb, California · 14573 days ago · 4 km deep · 1 km away
  46. 1.97 km WSW of Cobb, California · 14573 days ago · 1 km deep · 0 km away
  47. 1.75 km WSW of Cobb, California · 14573 days ago · 0 km deep · 2 km away
  48. 1.79 km W of Cobb, California · 14573 days ago · 1 km deep · 4 km away
  49. 2.06 km NW of Green Valley, California · 14573 days ago · 8 km deep · 76 km away
  50. 2.110 km E of Hidden Valley Lake, California · 14572 days ago · 2 km deep · 32 km away
  51. 2.610 km NW of Cazadero, California · 14572 days ago · 18 km deep · 40 km away
  52. 1.62 km SSW of Angwin, California · 14572 days ago · 13 km deep · 40 km away
  53. 1.74 km SSW of Calistoga, California · 14572 days ago · 4 km deep · 33 km away
  54. 1.68 km SW of Hopland, California · 14572 days ago · 4 km deep · 34 km away
  55. 1.96 km WNW of Montalvin, California · 14571 days ago · 31 km deep · 93 km away
  56. 2.17 km W of Cobb, California · 14571 days ago · 3 km deep · 3 km away
  57. 2.310 km N of Cloverdale, California · 14571 days ago · 22 km deep · 20 km away
  58. 2.19 km W of Cobb, California · 14570 days ago · -1 km deep · 3 km away
  59. 1.66 km W of Cobb, California · 14570 days ago · 2 km deep · 4 km away
  60. 1.79 km WNW of Cazadero, California · 14569 days ago · 4 km deep · 42 km away

The first 60 of 147.

Before

  1. 1.57 km SSW of Clear Lake Riviera, California · 14597 days ago · 4 km deep · 12 km away
  2. 2.01 km W of Sea Ranch, California · 14597 days ago · 4 km deep · 59 km away
  3. 4.04 km SW of Sea Ranch, California · 14597 days ago · 6 km deep · 61 km away
  4. 1.65 km SW of Cobb, California · 14598 days ago · 3 km deep · 3 km away
  5. 1.99 km SSW of Lodoga, California · 14598 days ago · 20 km deep · 53 km away
  6. 2.617 km SSE of Covelo, California · 14598 days ago · 4 km deep · 100 km away
  7. 1.64 km W of Angwin, California · 14599 days ago · 4 km deep · 36 km away
  8. 1.714 km NE of Willits, California · 14599 days ago · 4 km deep · 85 km away
  9. 2.05 km SW of Cobb, California · 14601 days ago · 1 km deep · 3 km away
  10. 1.67 km W of Cobb, California · 14601 days ago · 3 km deep · 2 km away
  11. 1.86 km W of Cobb, California · 14601 days ago · 3 km deep · 3 km away
  12. 1.6Northern California · 14601 days ago · 0 km deep · 3 km away
  13. 1.813 km S of Comptche, California · 14602 days ago · 2 km deep · 78 km away
  14. 2.110 km N of Cloverdale, California · 14603 days ago · 4 km deep · 22 km away
  15. 1.77 km WSW of Cobb, California · 14603 days ago · 3 km deep · 1 km away
  16. 2.06 km W of Cobb, California · 14603 days ago · 2 km deep · 3 km away
  17. 2.86 km W of Cobb, California · 14603 days ago · 2 km deep · 3 km away
  18. 2.16 km W of Cobb, California · 14603 days ago · 2 km deep · 2 km away
  19. 2.01 km WSW of Angwin, California · 14603 days ago · 4 km deep · 39 km away
  20. 2.04 km NE of Windsor, California · 14603 days ago · 0 km deep · 24 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc85511. Read Tue, Sep 29, 2026, 7:32 AM UTC.