California earthquakes

M2.0 earthquake 8 km WSW of Cobb, California

A magnitude 2.0 earthquake struck 8 km WSW of Cobb, California on Tue, Dec 22, 1987, 1:47 PM PST (21:47 UTC), 3 km (2 mi) below the surface.

A larger quake followed: M2.1 10 km WSW of Williams, 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
2.0 (md), micro
Local time
UTC
1987-12-22 21:47:36 UTC
Depth
3.0 km (1.9 mi), shallow
Epicenter
38.797° N, 122.813° 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 0.8 km horizontally, 0.7 km in depth
Magnitude uncertainty
±0.16
Depth from
From location
Station coverage gap
132°
Stations used
9

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 171 in the 60 days after this one and 0 in the 30 days before it.

After

  1. 1.84 km S of Cobb, California · 14145 days ago · 2 km deep · 8 km away
  2. 1.710 km W of Cobb, California · 14144 days ago · -1 km deep · 3 km away
  3. 2.110 km WSW of Williams, California · 14144 days ago · 2 km deep · 59 km away
  4. 1.66 km WSW of Cobb, California · 14143 days ago · -1 km deep · 2 km away
  5. 1.59 km W of Cobb, California · 14143 days ago · 13 km deep · 3 km away
  6. 1.79 km W of Cobb, California · 14143 days ago · 1 km deep · 4 km away
  7. 2.39 km W of Cobb, California · 14142 days ago · -1 km deep · 2 km away
  8. 1.67 km WSW of Cobb, California · 14142 days ago · 1 km deep · 1 km away
  9. 1.69 km N of Cloverdale, California · 14142 days ago · 1 km deep · 20 km away
  10. 1.76 km W of Cobb, California · 14142 days ago · 1 km deep · 3 km away
  11. 1.87 km W of Cobb, California · 14141 days ago · 0 km deep · 2 km away
  12. 1.710 km W of Cobb, California · 14141 days ago · 3 km deep · 3 km away
  13. 1.82 km NE of Santa Rosa, California · 14141 days ago · 8 km deep · 39 km away
  14. 1.510 km NNE of Cloverdale, California · 14141 days ago · 7 km deep · 15 km away
  15. 1.96 km SW of Cobb, California · 14140 days ago · 2 km deep · 5 km away
  16. 1.69 km WSW of Cobb, California · 14140 days ago · -1 km deep · 1 km away
  17. 1.56 km WSW of Cobb, California · 14140 days ago · 13 km deep · 2 km away
  18. 1.86 km W of Cobb, California · 14140 days ago · 0 km deep · 3 km away
  19. 2.07 km W of Cobb, California · 14140 days ago · 1 km deep · 3 km away
  20. 1.79 km WSW of Cobb, California · 14140 days ago · -1 km deep · 1 km away
  21. 1.79 km WSW of Cobb, California · 14139 days ago · 1 km deep · 1 km away
  22. 1.79 km W of Cobb, California · 14139 days ago · 1 km deep · 4 km away
  23. 2.08 km W of Cobb, California · 14138 days ago · 0 km deep · 2 km away
  24. 1.811 km SW of Kelseyville, California · 14138 days ago · 6 km deep · 14 km away
  25. 1.88 km W of Cobb, California · 14138 days ago · 1 km deep · 3 km away
  26. 1.75 km W of Cobb, California · 14137 days ago · 0 km deep · 4 km away
  27. 1.54 km WSW of Cobb, California · 14137 days ago · 0 km deep · 4 km away
  28. 1.86 km WNW of Cobb, California · 14136 days ago · 3 km deep · 4 km away
  29. 1.96 km W of Cobb, California · 14136 days ago · 2 km deep · 2 km away
  30. 1.94 km WSW of Cobb, California · 14136 days ago · 2 km deep · 3 km away
  31. 1.86 km SW of Cobb, California · 14136 days ago · 2 km deep · 4 km away
  32. 2.67 km WSW of Cobb, California · 14136 days ago · 1 km deep · 1 km away
  33. 2.27 km WNW of Princeton, California · 14136 days ago · 24 km deep · 94 km away
  34. 1.64 km WNW of Cobb, California · 14136 days ago · 2 km deep · 5 km away
  35. 2.17 km W of Cobb, California · 14135 days ago · 3 km deep · 2 km away
  36. 1.95 km SSW of Cobb, California · 14135 days ago · 1 km deep · 6 km away
  37. 2.46 km W of Cobb, California · 14135 days ago · 3 km deep · 2 km away
  38. 2.217 km ESE of Hidden Valley Lake, California · 14135 days ago · 8 km deep · 38 km away
  39. 1.917 km ESE of Hidden Valley Lake, California · 14135 days ago · 7 km deep · 38 km away
  40. 2.47 km WSW of Cobb, California · 14134 days ago · 1 km deep · 1 km away
  41. 1.67 km WSW of Cobb, California · 14134 days ago · 1 km deep · 1 km away
  42. 1.86 km WSW of Cobb, California · 14134 days ago · -1 km deep · 2 km away
  43. 2.16 km SSW of Cobb, California · 14134 days ago · -1 km deep · 7 km away
  44. 1.86 km WNW of Cobb, California · 14133 days ago · 0 km deep · 5 km away
  45. 1.616 km ENE of Angwin, CA · 14133 days ago · 8 km deep · 51 km away
  46. 1.77 km WSW of Cobb, California · 14133 days ago · 1 km deep · 1 km away
  47. 1.78 km W of Cobb, California · 14133 days ago · 1 km deep · 2 km away
  48. 1.65 km WNW of Cobb, California · 14132 days ago · 2 km deep · 5 km away
  49. 1.65 km SSW of Cobb, California · 14131 days ago · -1 km deep · 5 km away
  50. 1.78 km WSW of Cobb, California · 14131 days ago · 3 km deep · 0 km away
  51. 2.28 km W of Cobb, California · 14131 days ago · 1 km deep · 4 km away
  52. 1.56 km WSW of Cobb, California · 14130 days ago · 3 km deep · 2 km away
  53. 1.84 km WSW of Cobb, California · 14130 days ago · 1 km deep · 3 km away
  54. 2.014 km WSW of Geyserville, California · 14130 days ago · 4 km deep · 26 km away
  55. 2.65 km WNW of Cobb, California · 14130 days ago · 2 km deep · 5 km away
  56. 1.75 km W of Cobb, California · 14130 days ago · 1 km deep · 4 km away
  57. 1.55 km W of Cobb, California · 14130 days ago · 1 km deep · 4 km away
  58. 1.87 km W of Cobb, California · 14130 days ago · 1 km deep · 4 km away
  59. 1.68 km W of Cobb, California · 14130 days ago · 1 km deep · 4 km away
  60. 1.712 km NW of Guinda, California · 14129 days ago · 9 km deep · 47 km away

The first 60 of 171.

Earthquakes todayCalifornia earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1154447. Read Tue, Sep 22, 2026, 10:54 AM UTC.