California earthquakes

M1.9 earthquake 6 km W of Cobb, California

A magnitude 1.9 earthquake struck 6 km W of Cobb, California on Thu, Oct 17, 1985, 7:07 PM PDT (02:07 UTC), 1 km (1 mi) below the surface.

A larger quake followed: M2.2 3 km WSW of Green 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.

Open the live map with earthquakes

The earthquake

Magnitude
1.9 (md), micro
Local time
UTC
1985-10-18 02:07:23 UTC
Depth
1.4 km (0.9 mi), shallow
Epicenter
38.812° N, 122.798° 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 0.1 km horizontally, 0.3 km in depth
Magnitude uncertainty
±0.09
Depth from
From location
Station coverage gap
37°
Stations used
26

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 176 in the 60 days after this one and 0 in the 30 days before it.

After

  1. 1.65 km WSW of Cobb, California · 14929 days ago · 0 km deep · 3 km away
  2. 1.57 km ENE of Penngrove, California · 14929 days ago · 8 km deep · 57 km away
  3. 1.83 km SW of Cobb, California · 14929 days ago · 1 km deep · 5 km away
  4. 1.84 km W of Upper Lake, California · 14929 days ago · 5 km deep · 42 km away
  5. 1.57 km W of Cobb, California · 14929 days ago · 3 km deep · 1 km away
  6. 2.23 km WSW of Green Valley, California · 14929 days ago · 7 km deep · 82 km away
  7. 1.91 km ENE of Green Valley, California · 14929 days ago · 12 km deep · 84 km away
  8. 1.91 km SW of Lakeport, California · 14929 days ago · 22 km deep · 27 km away
  9. 1.56 km W of Cobb, California · 14928 days ago · 3 km deep · 1 km away
  10. 2.07 km W of Cobb, California · 14928 days ago · 0 km deep · 2 km away
  11. 3.19 km W of Cobb, California · 14928 days ago · 1 km deep · 3 km away
  12. 3.09 km W of Cobb, California · 14928 days ago · -1 km deep · 4 km away
  13. 2.29 km W of Cobb, California · 14928 days ago · 1 km deep · 3 km away
  14. 2.09 km W of Cobb, California · 14928 days ago · 0 km deep · 3 km away
  15. 1.99 km W of Cobb, California · 14928 days ago · 0 km deep · 3 km away
  16. 2.48 km W of Cobb, California · 14928 days ago · 0 km deep · 2 km away
  17. 1.85 km WSW of Cobb, California · 14928 days ago · 1 km deep · 2 km away
  18. 1.75 km W of Cobb, California · 14928 days ago · 1 km deep · 2 km away
  19. 1.77 km W of Cobb, California · 14928 days ago · 3 km deep · 1 km away
  20. 1.56 km SW of Cobb, California · 14927 days ago · 0 km deep · 5 km away
  21. 1.823 km SE of Covelo, California · 14927 days ago · 5 km deep · 93 km away
  22. 2.06 km WSW of Calistoga, California · 14927 days ago · -1 km deep · 30 km away
  23. 2.07 km WSW of Calistoga, California · 14927 days ago · 0 km deep · 31 km away
  24. 1.85 km WNW of Cobb, California · 14926 days ago · 2 km deep · 4 km away
  25. 1.69 km W of Cobb, California · 14926 days ago · 0 km deep · 2 km away
  26. 1.75 km WSW of Cobb, California · 14925 days ago · 0 km deep · 2 km away
  27. 2.613 km N of Brooktrails, California · 14925 days ago · 9 km deep · 98 km away
  28. 1.96 km SW of Cobb, California · 14924 days ago · 1 km deep · 4 km away
  29. 1.75 km SW of Cobb, California · 14924 days ago · 0 km deep · 4 km away
  30. 4.15 km NW of Cobb, California · 14924 days ago · -1 km deep · 5 km away
  31. 1.65 km W of Robbins, California · 14924 days ago · 2 km deep · 89 km away
  32. 1.63 km WNW of Cobb, California · 14924 days ago · 0 km deep · 3 km away
  33. 1.86 km WSW of Cobb, California · 14924 days ago · 3 km deep · 1 km away
  34. 2.03 km WNW of Cobb, California · 14923 days ago · 0 km deep · 3 km away
  35. 1.513 km N of Brooktrails, California · 14923 days ago · 9 km deep · 98 km away
  36. 1.89 km E of Hopland, California · 14923 days ago · 2 km deep · 25 km away
  37. 2.15 km SW of Cobb, California · 14923 days ago · 1 km deep · 5 km away
  38. 1.66 km W of Cobb, California · 14923 days ago · 2 km deep · 0 km away
  39. 1.914 km E of Angwin, California · 14923 days ago · 1 km deep · 51 km away
  40. 2.17 km W of Cobb, California · 14922 days ago · 1 km deep · 2 km away
  41. 1.97 km W of Cobb, California · 14922 days ago · 1 km deep · 2 km away
  42. 1.76 km WSW of Calistoga, California · 14922 days ago · 1 km deep · 31 km away
  43. 1.66 km ENE of Brooktrails, California · 14921 days ago · 7 km deep · 87 km away
  44. 1.614 km ESE of Hidden Valley Lake, California · 14920 days ago · -1 km deep · 34 km away
  45. 1.66 km W of Cobb, California · 14920 days ago · 2 km deep · 0 km away
  46. 1.514 km SSE of Laytonville, California · 14919 days ago · 10 km deep · 100 km away
  47. 1.98 km W of Cobb, California · 14919 days ago · 1 km deep · 2 km away
  48. 1.84 km W of Cobb, California · 14919 days ago · 0 km deep · 2 km away
  49. 2.68 km W of Cobb, California · 14919 days ago · 1 km deep · 2 km away
  50. 1.98 km W of Lodoga, California · 14919 days ago · 4 km deep · 57 km away
  51. 1.51 km E of Knights Landing, California · 14918 days ago · 1 km deep · 95 km away
  52. 1.55 km SW of Cobb, California · 14918 days ago · 0 km deep · 3 km away
  53. 2.36 km W of Cobb, California · 14917 days ago · 3 km deep · 1 km away
  54. 1.5Northern California · 14917 days ago · 1 km deep · 4 km away
  55. 1.76 km W of Cobb, California · 14917 days ago · 3 km deep · 1 km away
  56. 1.79 km WSW of Cobb, California · 14916 days ago · 2 km deep · 3 km away
  57. 1.65 km WSW of Cobb, California · 14916 days ago · 2 km deep · 1 km away
  58. 1.85 km WSW of Cobb, California · 14916 days ago · 1 km deep · 2 km away
  59. 1.86 km W of Cobb, California · 14916 days ago · 1 km deep · 0 km away
  60. 2.13 km ESE of Cloverdale, California · 14915 days ago · 2 km deep · 16 km away

The first 60 of 176.

Earthquakes todayCalifornia earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc57174. Read Tue, Sep 22, 2026, 5:28 PM UTC.