California earthquakes

M1.8 earthquake 6 km W of Cobb, California

A magnitude 1.8 earthquake struck 6 km W of Cobb, California on Tue, Dec 7, 1982, 9:30 AM PST (17:30 UTC), 3 km (2 mi) below the surface.

A larger quake followed: M3.2 9 km ESE of Boonville, 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
1.8 (md), micro
Local time
UTC
1982-12-07 17:30:15 UTC
Depth
2.8 km (1.7 mi), shallow
Epicenter
38.821° 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 0.3 km horizontally, 0.5 km in depth
Magnitude uncertainty
±0.20
Depth from
From location
Station coverage gap
67°
Stations used
15

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 139 in the 60 days after this one and 76 in the 30 days before it.

After

  1. 1.95 km SW of Cobb, California · 16002 days ago · 0 km deep · 5 km away
  2. 1.85 km SW of Cobb, California · 16002 days ago · -1 km deep · 4 km away
  3. 1.67 km SSW of Cobb, California · 16002 days ago · -1 km deep · 7 km away
  4. 2.06 km W of Cobb, California · 16001 days ago · 0 km deep · 1 km away
  5. 1.76 km SSE of Clear Lake Riviera, California · 16001 days ago · 5 km deep · 13 km away
  6. 2.86 km WSW of Lower Lake, California · 16001 days ago · 3 km deep · 13 km away
  7. 1.66 km WSW of Cobb, California · 16000 days ago · 3 km deep · 2 km away
  8. 2.26 km W of Cobb, California · 16000 days ago · 1 km deep · 0 km away
  9. 1.818 km NNE of Lucerne, California · 15999 days ago · 12 km deep · 46 km away
  10. 1.55 km NNE of Cobb, California · 15998 days ago · 4 km deep · 10 km away
  11. 1.6Northern California · 15998 days ago · 0 km deep · 1 km away
  12. 1.69 km WSW of Cobb, California · 15998 days ago · 2 km deep · 3 km away
  13. 1.96 km SW of Cobb, California · 15997 days ago · 0 km deep · 4 km away
  14. 1.54 km ESE of Calpella, California · 15993 days ago · 0 km deep · 54 km away
  15. 2.5near the coast of Northern California · 15993 days ago · 5 km deep · 92 km away
  16. 1.9Northern California · 15992 days ago · -1 km deep · 4 km away
  17. 3.113 km NNW of Brooktrails, California · 15991 days ago · 7 km deep · 99 km away
  18. 2.14 km W of Cobb, California · 15991 days ago · 3 km deep · 2 km away
  19. 2.36 km W of Cobb, California · 15991 days ago · 1 km deep · 1 km away
  20. 2.36 km W of Cobb, California · 15991 days ago · 2 km deep · 0 km away
  21. 1.72 km SW of Clearlake, California · 15990 days ago · 1 km deep · 19 km away
  22. 1.74 km NE of Clearlake, California · 15990 days ago · 1 km deep · 26 km away
  23. 1.96 km WSW of Cobb, California · 15989 days ago · 0 km deep · 1 km away
  24. 2.92 km SE of Clearlake, California · 15989 days ago · 2 km deep · 21 km away
  25. 1.61 km SE of Clearlake, California · 15989 days ago · 3 km deep · 21 km away
  26. 1.92 km SE of Clearlake, California · 15989 days ago · 2 km deep · 22 km away
  27. 1.61 km SSE of Clearlake, California · 15989 days ago · 2 km deep · 21 km away
  28. 2.41 km SSE of Clearlake, California · 15989 days ago · 3 km deep · 21 km away
  29. 2.31 km SSE of Clearlake, California · 15989 days ago · 3 km deep · 21 km away
  30. 1.91 km SE of Clearlake, California · 15989 days ago · 3 km deep · 21 km away
  31. 2.21 km SSE of Clearlake, California · 15989 days ago · 3 km deep · 21 km away
  32. 2.59 km WSW of Cobb, California · 15989 days ago · 2 km deep · 3 km away
  33. 1.55 km SW of Cobb, California · 15989 days ago · 0 km deep · 4 km away
  34. 1.67 km W of Cobb, California · 15989 days ago · 3 km deep · 1 km away
  35. 1.917 km WNW of Elk Creek, California · 15987 days ago · 10 km deep · 91 km away
  36. 1.66 km W of Cobb, California · 15987 days ago · 3 km deep · 0 km away
  37. 1.66 km W of Cobb, California · 15987 days ago · 3 km deep · 0 km away
  38. 1.722 km ENE of Potter Valley, California · 15986 days ago · 14 km deep · 66 km away
  39. 1.79 km WSW of Cobb, California · 15984 days ago · 1 km deep · 3 km away
  40. 1.83 km NE of Talmage, California · 15984 days ago · 7 km deep · 48 km away
  41. 3.16 km WSW of Cobb, California · 15984 days ago · 3 km deep · 1 km away
  42. 1.77 km W of Cobb, California · 15984 days ago · 3 km deep · 1 km away
  43. 1.630 km NNE of Potter Valley, California · 15984 days ago · 14 km deep · 82 km away
  44. 1.511 km ESE of Hidden Valley Lake, California · 15984 days ago · 2 km deep · 32 km away
  45. 2.06 km W of Cobb, California · 15983 days ago · 2 km deep · 1 km away
  46. 1.57 km WSW of Cobb, California · 15983 days ago · -1 km deep · 3 km away
  47. 1.61 km SE of Clearlake, California · 15983 days ago · 2 km deep · 21 km away
  48. 1.97 km W of Cobb, California · 15983 days ago · 0 km deep · 1 km away
  49. 2.24 km NNW of Benicia, California · 15981 days ago · 7 km deep · 98 km away
  50. 2.26 km E of Lakeport, California · 15981 days ago · 45 km deep · 25 km away
  51. 1.85 km NE of Willits, California · 15981 days ago · 3 km deep · 82 km away
  52. 1.81 km E of Deer Park, California · 15980 days ago · 11 km deep · 44 km away
  53. 2.24 km NE of Talmage, California · 15980 days ago · 8 km deep · 48 km away
  54. 2.38 km W of Cobb, California · 15979 days ago · 1 km deep · 2 km away
  55. 1.510 km N of Brooktrails, California · 15979 days ago · 5 km deep · 95 km away
  56. 1.9Northern California · 15979 days ago · 0 km deep · 0 km away
  57. 1.65 km W of Cobb, California · 15978 days ago · 1 km deep · 2 km away
  58. 1.75 km SW of Cobb, California · 15978 days ago · 0 km deep · 4 km away
  59. 2.74 km SSW of Willits, California · 15977 days ago · 4 km deep · 79 km away
  60. 1.612 km NNW of Moskowite Corner, California · 15977 days ago · 2 km deep · 56 km away

The first 60 of 139.

Before

  1. 3.08 km NW of Williams, California · 16005 days ago · 14 km deep · 65 km away
  2. 3.37 km NW of Williams, California · 16005 days ago · 16 km deep · 65 km away
  3. 2.18 km WNW of Williams, California · 16005 days ago · 21 km deep · 63 km away
  4. 2.39 km WSW of Cobb, California · 16005 days ago · 2 km deep · 4 km away
  5. 3.56 km WNW of Williams, California · 16006 days ago · 15 km deep · 64 km away
  6. 2.07 km W of Cobb, California · 16006 days ago · 3 km deep · 1 km away
  7. 2.16 km WNW of Williams, California · 16006 days ago · 21 km deep · 64 km away
  8. 2.37 km W of Cobb, California · 16006 days ago · 2 km deep · 2 km away
  9. 2.64 km WNW of Williams, California · 16007 days ago · 16 km deep · 65 km away
  10. 3.05 km W of Williams, California · 16008 days ago · 12 km deep · 63 km away
  11. 2.99 km WNW of Williams, California · 16008 days ago · 16 km deep · 64 km away
  12. 2.66 km WSW of Cobb, California · 16008 days ago · 1 km deep · 2 km away
  13. 2.95 km WNW of Williams, California · 16008 days ago · 11 km deep · 64 km away
  14. 2.78 km NW of Williams, California · 16008 days ago · 15 km deep · 65 km away
  15. 1.78 km WNW of Williams, California · 16008 days ago · 12 km deep · 62 km away
  16. 2.37 km WNW of Williams, California · 16008 days ago · 15 km deep · 65 km away
  17. 3.1Northern California · 16008 days ago · 14 km deep · 65 km away
  18. 1.714 km WSW of Williams, California · 16008 days ago · 9 km deep · 54 km away
  19. 2.011 km W of Williams, California · 16008 days ago · 3 km deep · 57 km away
  20. 3.0Northern California · 16008 days ago · 14 km deep · 64 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1082761. Read Wed, Sep 30, 2026, 1:52 PM UTC.