California earthquakes

M2.2 earthquake 8 km W of Cobb, California

A magnitude 2.2 earthquake struck 8 km W of Cobb, California on Sun, Nov 22, 1987, 7:46 PM PST (03:46 UTC), 1 km (1 mi) below the surface.

A larger quake followed: M2.8 6 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
2.2 (md), micro
Local time
UTC
1987-11-23 03:46:21 UTC
Depth
1.3 km (0.8 mi), shallow
Epicenter
38.819° N, 122.823° 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, 0.4 km in depth
Magnitude uncertainty
±0.14
Depth from
From location
Station coverage gap
40°
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: 167 in the 60 days after this one and 0 in the 30 days before it.

After

  1. 2.17 km W of Cobb, California · 14176 days ago · 3 km deep · 1 km away
  2. 2.0Northern California · 14176 days ago · 1 km deep · 8 km away
  3. 1.86 km S of Cobb, California · 14176 days ago · 1 km deep · 11 km away
  4. 1.77 km WSW of Cobb, California · 14175 days ago · 4 km deep · 3 km away
  5. 1.67 km WSW of Cobb, California · 14175 days ago · 1 km deep · 2 km away
  6. 2.012 km WSW of Hopland, California · 14175 days ago · 6 km deep · 38 km away
  7. 2.16 km W of Cobb, California · 14175 days ago · 3 km deep · 2 km away
  8. 1.69 km W of Cobb, California · 14175 days ago · 0 km deep · 1 km away
  9. 2.86 km W of Cobb, California · 14175 days ago · 1 km deep · 2 km away
  10. 1.69 km W of Cobb, California · 14175 days ago · -1 km deep · 2 km away
  11. 1.78 km W of Cobb, California · 14175 days ago · 0 km deep · 1 km away
  12. 2.57 km WSW of Cobb, California · 14173 days ago · 3 km deep · 2 km away
  13. 1.97 km WSW of Cobb, California · 14173 days ago · 3 km deep · 2 km away
  14. 1.6Northern California · 14173 days ago · 1 km deep · 3 km away
  15. 2.17 km E of Potter Valley, California · 14173 days ago · 0 km deep · 58 km away
  16. 2.719 km ENE of Sea Ranch, California · 14172 days ago · 4 km deep · 38 km away
  17. 1.519 km ENE of Sea Ranch, California · 14172 days ago · 4 km deep · 38 km away
  18. 1.95 km W of Cobb, California · 14171 days ago · 1 km deep · 4 km away
  19. 1.97 km WSW of Cobb, California · 14171 days ago · 1 km deep · 2 km away
  20. 2.05 km WSW of Cobb, California · 14171 days ago · 0 km deep · 4 km away
  21. 2.56 km WSW of Cobb, California · 14171 days ago · 0 km deep · 4 km away
  22. 1.89 km W of Cobb, California · 14170 days ago · 0 km deep · 1 km away
  23. 2.16 km WNW of Cobb, California · 14170 days ago · 1 km deep · 3 km away
  24. 1.79 km ESE of Hidden Valley Lake, California · 14170 days ago · 7 km deep · 32 km away
  25. 1.94 km WSW of Cobb, California · 14169 days ago · 1 km deep · 4 km away
  26. 1.94 km WSW of Cobb, California · 14169 days ago · 2 km deep · 5 km away
  27. 1.97 km SW of Cobb, California · 14169 days ago · -1 km deep · 7 km away
  28. 2.16 km W of Cobb, California · 14169 days ago · 3 km deep · 2 km away
  29. 1.68 km WNW of American Canyon, California · 14168 days ago · 13 km deep · 80 km away
  30. 3.25 km SW of Cobb, California · 14168 days ago · 1 km deep · 6 km away
  31. 1.65 km SW of Cobb, California · 14168 days ago · -1 km deep · 7 km away
  32. 2.08 km W of Cobb, California · 14168 days ago · 1 km deep · 0 km away
  33. 1.68 km W of Cobb, California · 14168 days ago · 4 km deep · 0 km away
  34. 1.78 km W of Cobb, California · 14167 days ago · 2 km deep · 1 km away
  35. 1.94 km WSW of Cobb, California · 14167 days ago · -1 km deep · 4 km away
  36. 2.9near the coast of Northern California · 14166 days ago · -1 km deep · 73 km away
  37. 1.7Northern California · 14166 days ago · 2 km deep · 4 km away
  38. 2.16 km WSW of Cobb, California · 14165 days ago · 3 km deep · 3 km away
  39. 1.64 km WSW of Cobb, California · 14164 days ago · 0 km deep · 5 km away
  40. 2.06 km SW of Cobb, California · 14163 days ago · 1 km deep · 6 km away
  41. 1.96 km SW of Cobb, California · 14163 days ago · 1 km deep · 6 km away
  42. 1.75 km SW of Cobb, California · 14163 days ago · 1 km deep · 6 km away
  43. 1.75 km WNW of Cobb, California · 14163 days ago · 4 km deep · 4 km away
  44. 1.68 km W of Cobb, California · 14163 days ago · 0 km deep · 1 km away
  45. 1.67 km WSW of Cobb, California · 14163 days ago · 4 km deep · 3 km away
  46. 2.15 km W of Cobb, California · 14163 days ago · 3 km deep · 3 km away
  47. 1.86 km W of Cobb, California · 14163 days ago · 2 km deep · 3 km away
  48. 1.77 km W of Cobb, California · 14162 days ago · 0 km deep · 2 km away
  49. 1.76 km W of Cobb, California · 14162 days ago · 2 km deep · 3 km away
  50. 1.89 km S of Moskowite Corner, California · 14161 days ago · 8 km deep · 75 km away
  51. 1.76 km W of Cobb, California · 14161 days ago · 3 km deep · 3 km away
  52. 2.14 km S of Cobb, California · 14161 days ago · 1 km deep · 10 km away
  53. 1.64 km ESE of Santa Rosa, California · 14161 days ago · 9 km deep · 45 km away
  54. 1.77 km WSW of Cobb, California · 14161 days ago · -1 km deep · 3 km away
  55. 2.918 km NNE of Upper Lake, California · 14160 days ago · 3 km deep · 56 km away
  56. 2.27 km W of Cobb, California · 14160 days ago · 3 km deep · 1 km away
  57. 1.85 km WNW of Cobb, California · 14159 days ago · 2 km deep · 5 km away
  58. 1.66 km S of Cobb, California · 14159 days ago · -1 km deep · 10 km away
  59. 1.79 km W of Cobb, California · 14159 days ago · -1 km deep · 1 km away
  60. 1.86 km WSW of Cobb, California · 14159 days ago · 3 km deep · 3 km away

The first 60 of 167.

Earthquakes todayCalifornia earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc10085792. Read Tue, Sep 22, 2026, 9:01 PM UTC.