California earthquakes

M2.3 earthquake 9 km WSW of Cobb, California

A magnitude 2.3 earthquake struck 9 km WSW of Cobb, California on Tue, Dec 23, 1986, 4:32 PM PST (00:32 UTC), 2 km (1 mi) below the surface.

A larger quake followed: M3.1 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.

Open the live map with earthquakes

The earthquake

Magnitude
2.3 (md), micro
Local time
UTC
1986-12-24 00:32:05 UTC
Depth
1.6 km (1.0 mi), shallow
Epicenter
38.794° N, 122.826° 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, 0.5 km in depth
Magnitude uncertainty
±0.13
Depth from
From location
Station coverage gap
42°
Stations used
24

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 0 in the 30 days before it.

After

  1. 1.85 km SW of Cobb, California · 14510 days ago · -1 km deep · 5 km away
  2. 2.27 km W of Cobb, California · 14510 days ago · 1 km deep · 3 km away
  3. 3.17 km W of Cobb, California · 14510 days ago · 1 km deep · 3 km away
  4. 2.87 km W of Cobb, California · 14510 days ago · -1 km deep · 4 km away
  5. 1.77 km W of Cobb, California · 14510 days ago · 1 km deep · 4 km away
  6. 1.77 km W of Cobb, California · 14510 days ago · -1 km deep · 2 km away
  7. 2.07 km W of Cobb, California · 14510 days ago · 0 km deep · 4 km away
  8. 1.88 km ESE of Hidden Valley Lake, California · 14509 days ago · 7 km deep · 32 km away
  9. 1.92 km E of Rohnert Park, California · 14509 days ago · 3 km deep · 52 km away
  10. 1.87 km W of Cobb, California · 14509 days ago · 2 km deep · 3 km away
  11. 2.42 km E of Rohnert Park, California · 14508 days ago · 4 km deep · 52 km away
  12. 1.82 km E of Rohnert Park, California · 14508 days ago · 3 km deep · 52 km away
  13. 2.12 km E of Rohnert Park, California · 14508 days ago · 4 km deep · 52 km away
  14. 1.72 km E of Rohnert Park, California · 14508 days ago · 2 km deep · 52 km away
  15. 2.22 km E of Rohnert Park, California · 14508 days ago · 3 km deep · 52 km away
  16. 1.63 km SSE of Roseland, California · 14508 days ago · 3 km deep · 46 km away
  17. 2.57 km W of Cobb, California · 14507 days ago · 4 km deep · 3 km away
  18. 2.17 km W of Cobb, California · 14507 days ago · 4 km deep · 3 km away
  19. 2.25 km SW of Yountville, California · 14507 days ago · 6 km deep · 59 km away
  20. 1.66 km W of Cobb, California · 14507 days ago · 1 km deep · 4 km away
  21. 1.96 km W of Cobb, California · 14506 days ago · 3 km deep · 4 km away
  22. 2.15 km SW of Cobb, California · 14506 days ago · 0 km deep · 5 km away
  23. 1.68 km W of Cobb, California · 14505 days ago · 1 km deep · 3 km away
  24. 2.45 km SW of Cobb, California · 14505 days ago · 1 km deep · 5 km away
  25. 1.717 km WSW of Elk Creek, California · 14504 days ago · 3 km deep · 82 km away
  26. 1.66 km W of Cobb, California · 14504 days ago · 3 km deep · 4 km away
  27. 1.74 km WNW of Cobb, California · 14504 days ago · 2 km deep · 6 km away
  28. 2.04 km WSW of North Lakeport, California · 14504 days ago · 4 km deep · 33 km away
  29. 3.45 km SW of Cobb, California · 14503 days ago · 0 km deep · 4 km away
  30. 1.96 km SW of Cobb, California · 14503 days ago · 1 km deep · 5 km away
  31. 2.64 km NNW of Benicia, California · 14502 days ago · 11 km deep · 96 km away
  32. 1.64 km NNE of Crockett, California · 14502 days ago · 7 km deep · 96 km away
  33. 1.74 km NNE of Crockett, California · 14502 days ago · 8 km deep · 96 km away
  34. 2.47 km E of Hidden Valley Lake, California · 14501 days ago · 8 km deep · 31 km away
  35. 2.14 km WSW of Cobb, California · 14501 days ago · 1 km deep · 5 km away
  36. 1.75 km ESE of Talmage, California · 14501 days ago · 5 km deep · 43 km away
  37. 1.54 km N of Port Costa, California · 14501 days ago · 13 km deep · 97 km away
  38. 1.87 km NW of Yolo, California · 14500 days ago · 5 km deep · 83 km away
  39. 2.75 km W of Cobb, California · 14500 days ago · 1 km deep · 6 km away
  40. 2.36 km WSW of Cobb, California · 14500 days ago · 2 km deep · 3 km away
  41. 1.59 km ESE of Hidden Valley Lake, California · 14500 days ago · 7 km deep · 32 km away
  42. 2.23 km N of Port Costa, California · 14499 days ago · 8 km deep · 97 km away
  43. 1.74 km WSW of Cobb, California · 14499 days ago · 1 km deep · 5 km away
  44. 1.65 km WSW of Cobb, California · 14498 days ago · 1 km deep · 4 km away
  45. 1.64 km WNW of Cobb, California · 14498 days ago · 2 km deep · 6 km away
  46. 1.68 km W of Cobb, California · 14496 days ago · 2 km deep · 2 km away
  47. 2.28 km ENE of Hopland, California · 14496 days ago · 6 km deep · 29 km away
  48. 1.73 km SW of Cobb, California · 14496 days ago · 1 km deep · 7 km away
  49. 1.66 km W of Cobb, California · 14496 days ago · 2 km deep · 4 km away
  50. 1.98 km WSW of Cobb, California · 14495 days ago · 3 km deep · 1 km away
  51. 1.710 km NNW of Redwood Valley, California · 14495 days ago · 4 km deep · 72 km away
  52. 2.82 km E of Rohnert Park, California · 14495 days ago · 5 km deep · 52 km away
  53. 2.13 km ESE of Rohnert Park, California · 14495 days ago · 0 km deep · 53 km away
  54. 1.710 km SSW of Cloverdale, California · 14495 days ago · 30 km deep · 23 km away
  55. 1.82 km E of Rohnert Park, California · 14495 days ago · 3 km deep · 52 km away
  56. 1.77 km E of Hidden Valley Lake, California · 14495 days ago · 8 km deep · 31 km away
  57. 2.97 km W of Cobb, California · 14495 days ago · 4 km deep · 3 km away
  58. 2.47 km W of Cobb, California · 14495 days ago · 4 km deep · 3 km away
  59. 2.82 km ENE of Rohnert Park, California · 14495 days ago · 6 km deep · 52 km away
  60. 2.010 km E of Hidden Valley Lake, California · 14495 days ago · 10 km deep · 33 km away

The first 60 of 174.

Earthquakes todayCalifornia earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc90898. Read Tue, Sep 22, 2026, 7:28 AM UTC.