California earthquakes

M3.1 earthquake 7 km W of Cobb, California

A magnitude 3.1 earthquake struck 7 km W of Cobb, California on Wed, Jan 30, 1985, 2:26 AM PST (10:26 UTC), 4 km (2 mi) below the surface.

A larger quake followed: M3.1 Northern 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
3.1 (md), minor
Local time
UTC
1985-01-30 10:26:04 UTC
Depth
3.8 km (2.3 mi), shallow
Epicenter
38.820° N, 122.807° 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
±0.17
Depth from
From location
Station coverage gap
34°
Stations used
45

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 190 in the 60 days after this one and 0 in the 30 days before it.

After

  1. 2.07 km W of Cobb, California · 15193 days ago · 3 km deep · 0 km away
  2. 1.69 km ESE of Hidden Valley Lake, California · 15193 days ago · 6 km deep · 31 km away
  3. 1.81 km SE of Clearlake, California · 15192 days ago · 9 km deep · 22 km away
  4. 2.17 km W of Cobb, California · 15192 days ago · 4 km deep · 1 km away
  5. 1.88 km WSW of Cobb, California · 15191 days ago · 3 km deep · 2 km away
  6. 1.63 km ENE of Redwood Valley, California · 15191 days ago · 4 km deep · 60 km away
  7. 1.96 km W of Cobb, California · 15191 days ago · 4 km deep · 1 km away
  8. 1.66 km WSW of Cobb, California · 15191 days ago · 3 km deep · 2 km away
  9. 2.36 km WSW of Cobb, California · 15191 days ago · 3 km deep · 2 km away
  10. 1.75 km SW of Cobb, California · 15190 days ago · 1 km deep · 6 km away
  11. 2.08 km WSW of Cobb, California · 15190 days ago · 3 km deep · 2 km away
  12. 2.05 km E of Hopland, California · 15189 days ago · 0 km deep · 27 km away
  13. 1.65 km SW of Cobb, California · 15189 days ago · 1 km deep · 5 km away
  14. 2.113 km N of Upper Lake, California · 15189 days ago · 12 km deep · 53 km away
  15. 1.95 km SW of Cobb, California · 15189 days ago · 0 km deep · 4 km away
  16. 2.53 km SSW of Cobb, California · 15189 days ago · 1 km deep · 6 km away
  17. 1.68 km W of Cobb, California · 15188 days ago · 0 km deep · 1 km away
  18. 1.66 km WSW of Cobb, California · 15188 days ago · 1 km deep · 2 km away
  19. 1.9Northern California · 15188 days ago · 3 km deep · 13 km away
  20. 2.25 km W of Cobb, California · 15188 days ago · 0 km deep · 1 km away
  21. 2.03 km NNE of Cloverdale, California · 15188 days ago · 3 km deep · 17 km away
  22. 1.86 km W of Cobb, California · 15187 days ago · 2 km deep · 1 km away
  23. 2.04 km SW of Clear Lake Riviera, California · 15187 days ago · 2 km deep · 13 km away
  24. 1.56 km WSW of Cobb, California · 15186 days ago · 1 km deep · 3 km away
  25. 2.17 km WSW of Cobb, California · 15186 days ago · 4 km deep · 3 km away
  26. 1.67 km WSW of Cobb, California · 15186 days ago · 1 km deep · 2 km away
  27. 1.5Northern California · 15185 days ago · 1 km deep · 4 km away
  28. 2.16 km W of Cobb, California · 15185 days ago · 3 km deep · 1 km away
  29. 2.47 km W of Cobb, California · 15185 days ago · 3 km deep · 0 km away
  30. 1.76 km ENE of Santa Rosa, California · 15185 days ago · 10 km deep · 42 km away
  31. 2.03 km W of Forestville, California · 15184 days ago · 0 km deep · 40 km away
  32. 2.78 km W of Cobb, California · 15184 days ago · 0 km deep · 1 km away
  33. 1.87 km W of Cobb, California · 15184 days ago · -1 km deep · 0 km away
  34. 3.110 km NW of Cobb, California · 15184 days ago · 8 km deep · 7 km away
  35. 2.34 km WSW of Cobb, California · 15183 days ago · 1 km deep · 4 km away
  36. 2.24 km NNE of Clearlake, California · 15183 days ago · 1 km deep · 26 km away
  37. 2.04 km NNE of Clearlake, California · 15183 days ago · 1 km deep · 26 km away
  38. 1.79 km ESE of Black Point-Green Point, California · 15182 days ago · 14 km deep · 89 km away
  39. 1.66 km W of Cobb, California · 15182 days ago · 3 km deep · 1 km away
  40. 1.86 km NW of North Lakeport, California · 15182 days ago · 1 km deep · 36 km away
  41. 1.86 km W of Cobb, California · 15182 days ago · 3 km deep · 1 km away
  42. 1.87 km WSW of Cobb, California · 15182 days ago · 1 km deep · 2 km away
  43. 2.45 km SW of Cobb, California · 15181 days ago · 2 km deep · 4 km away
  44. 1.76 km NW of North Lakeport, California · 15181 days ago · 5 km deep · 36 km away
  45. 2.38 km W of Cobb, California · 15180 days ago · 0 km deep · 1 km away
  46. 1.98 km W of Cobb, California · 15180 days ago · 0 km deep · 2 km away
  47. 2.52 km SSE of Clear Lake Riviera, California · 15180 days ago · 1 km deep · 15 km away
  48. 1.90 km NNE of Clearlake, California · 15180 days ago · 4 km deep · 23 km away
  49. 1.5Northern California · 15180 days ago · -1 km deep · 14 km away
  50. 2.15 km SW of Cobb, California · 15180 days ago · 1 km deep · 6 km away
  51. 1.67 km W of Cobb, California · 15180 days ago · 3 km deep · 0 km away
  52. 1.64 km WSW of Cobb, California · 15179 days ago · 1 km deep · 3 km away
  53. 1.53 km ESE of Kenwood, California · 15179 days ago · 8 km deep · 54 km away
  54. 1.77 km W of Cobb, California · 15179 days ago · 3 km deep · 0 km away
  55. 2.02 km SE of Clear Lake Riviera, California · 15178 days ago · 2 km deep · 16 km away
  56. 2.77 km WSW of Cobb, California · 15178 days ago · 2 km deep · 2 km away
  57. 1.87 km WSW of Cobb, California · 15178 days ago · 2 km deep · 1 km away
  58. 3.1Northern California · 15177 days ago · 3 km deep · 1 km away
  59. 2.46 km NNE of Cloverdale, California · 15177 days ago · 18 km deep · 16 km away
  60. 1.56 km W of Cobb, California · 15177 days ago · 3 km deep · 0 km away

The first 60 of 190.

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc39310 (also filed as usp0002bg1). Read Tue, Sep 22, 2026, 4:24 PM UTC.