California earthquakes

M1.7 earthquake 7 km W of Cobb, California

A magnitude 1.7 earthquake struck 7 km W of Cobb, California on Sun, Dec 26, 1982, 2:21 AM PST (10:21 UTC), 3 km (2 mi) below the surface.

A larger quake followed: M2.0 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
1.7 (md), micro
Local time
UTC
1982-12-26 10:21:21 UTC
Depth
3.1 km (1.9 mi), shallow
Epicenter
38.815° N, 122.805° 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
±0.12
Depth from
From location
Station coverage gap
85°
Stations used
17

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 135 in the 60 days after this one and 41 in the 30 days before it.

After

  1. 1.630 km NNE of Potter Valley, California · 15976 days ago · 14 km deep · 83 km away
  2. 1.511 km ESE of Hidden Valley Lake, California · 15976 days ago · 2 km deep · 32 km away
  3. 2.06 km W of Cobb, California · 15976 days ago · 2 km deep · 0 km away
  4. 1.57 km WSW of Cobb, California · 15975 days ago · -1 km deep · 2 km away
  5. 1.61 km SE of Clearlake, California · 15975 days ago · 2 km deep · 22 km away
  6. 1.97 km W of Cobb, California · 15975 days ago · 0 km deep · 1 km away
  7. 2.24 km NNW of Benicia, California · 15973 days ago · 7 km deep · 98 km away
  8. 2.26 km E of Lakeport, California · 15973 days ago · 45 km deep · 26 km away
  9. 1.85 km NE of Willits, California · 15973 days ago · 3 km deep · 82 km away
  10. 1.81 km E of Deer Park, California · 15972 days ago · 11 km deep · 44 km away
  11. 2.24 km NE of Talmage, California · 15972 days ago · 8 km deep · 48 km away
  12. 2.38 km W of Cobb, California · 15971 days ago · 1 km deep · 1 km away
  13. 1.510 km N of Brooktrails, California · 15971 days ago · 5 km deep · 95 km away
  14. 1.9Northern California · 15971 days ago · 0 km deep · 1 km away
  15. 1.65 km W of Cobb, California · 15970 days ago · 1 km deep · 2 km away
  16. 1.75 km SW of Cobb, California · 15970 days ago · 0 km deep · 4 km away
  17. 2.74 km SSW of Willits, California · 15969 days ago · 4 km deep · 79 km away
  18. 1.612 km NNW of Moskowite Corner, California · 15969 days ago · 2 km deep · 56 km away
  19. 1.63 km SE of Calpella, California · 15969 days ago · 2 km deep · 54 km away
  20. 1.77 km W of Cobb, California · 15967 days ago · 0 km deep · 1 km away
  21. 1.67 km E of Willits, California · 15967 days ago · 7 km deep · 77 km away
  22. 2.25 km ENE of Willits, California · 15966 days ago · 3 km deep · 81 km away
  23. 1.89 km N of Moskowite Corner, California · 15966 days ago · 10 km deep · 60 km away
  24. 1.713 km NNW of Moskowite Corner, California · 15966 days ago · 3 km deep · 55 km away
  25. 1.65 km WNW of Redwood Valley, California · 15966 days ago · 7 km deep · 65 km away
  26. 1.77 km NW of Moskowite Corner, California · 15966 days ago · 2 km deep · 60 km away
  27. 2.53 km NNE of Dixon, California · 15966 days ago · 30 km deep · 95 km away
  28. 1.725 km SE of Covelo, California · 15965 days ago · 14 km deep · 92 km away
  29. 1.78 km E of Willits, California · 15965 days ago · 9 km deep · 76 km away
  30. 1.94 km S of Cobb, California · 15964 days ago · 1 km deep · 8 km away
  31. 1.96 km ESE of Willits, California · 15964 days ago · 8 km deep · 76 km away
  32. 1.95 km W of Hopland, California · 15964 days ago · 6 km deep · 37 km away
  33. 1.65 km WSW of Cobb, California · 15964 days ago · -1 km deep · 3 km away
  34. 2.27 km WSW of Moskowite Corner, California · 15963 days ago · 13 km deep · 64 km away
  35. 2.05 km NE of Hopland, California · 15962 days ago · 5 km deep · 32 km away
  36. 2.14 km NNW of Redwood Valley, California · 15962 days ago · 7 km deep · 66 km away
  37. 1.87 km W of Cobb, California · 15962 days ago · 3 km deep · 1 km away
  38. 1.61 km SE of Clearlake, California · 15962 days ago · 3 km deep · 22 km away
  39. 2.05 km NE of Hopland, California · 15962 days ago · 5 km deep · 33 km away
  40. 1.84 km ENE of Willits, California · 15962 days ago · 7 km deep · 80 km away
  41. 1.812 km ESE of Hidden Valley Lake, California · 15962 days ago · 6 km deep · 33 km away
  42. 1.79 km SE of Hidden Valley Lake, California · 15962 days ago · 0 km deep · 29 km away
  43. 1.710 km W of Cobb, California · 15962 days ago · 4 km deep · 4 km away
  44. 1.79 km NW of Redwood Valley, California · 15960 days ago · -1 km deep · 70 km away
  45. 2.214 km NNE of Angwin, California · 15960 days ago · 9 km deep · 41 km away
  46. 2.921 km NE of Potter Valley, California · 15959 days ago · 6 km deep · 71 km away
  47. 1.821 km NE of Potter Valley, California · 15959 days ago · 7 km deep · 72 km away
  48. 1.611 km SE of Hidden Valley Lake, California · 15958 days ago · 3 km deep · 32 km away
  49. 1.68 km NNE of Brooktrails, California · 15957 days ago · 5 km deep · 91 km away
  50. 2.36 km W of Cobb, California · 15957 days ago · 3 km deep · 1 km away
  51. 1.88 km W of Cobb, California · 15957 days ago · 4 km deep · 1 km away
  52. 1.74 km W of Cobb, California · 15956 days ago · 2 km deep · 2 km away
  53. 2.021 km NNE of Potter Valley, California · 15956 days ago · 8 km deep · 76 km away
  54. 2.27 km W of Cobb, California · 15956 days ago · 2 km deep · 1 km away
  55. 1.94 km S of Cobb, California · 15956 days ago · 2 km deep · 8 km away
  56. 2.14 km WSW of Cobb, California · 15955 days ago · 2 km deep · 3 km away
  57. 1.66 km W of Cobb, California · 15955 days ago · 2 km deep · 1 km away
  58. 1.55 km WSW of Cobb, California · 15953 days ago · 0 km deep · 3 km away
  59. 2.15 km S of Cobb, California · 15953 days ago · 0 km deep · 8 km away
  60. 2.95 km WSW of Cobb, California · 15953 days ago · 0 km deep · 2 km away

The first 60 of 135.

Before

  1. 3.16 km WSW of Cobb, California · 15976 days ago · 3 km deep · 1 km away
  2. 1.83 km NE of Talmage, California · 15976 days ago · 7 km deep · 48 km away
  3. 1.79 km WSW of Cobb, California · 15976 days ago · 1 km deep · 3 km away
  4. 1.722 km ENE of Potter Valley, California · 15978 days ago · 14 km deep · 67 km away
  5. 1.66 km W of Cobb, California · 15979 days ago · 3 km deep · 1 km away
  6. 1.66 km W of Cobb, California · 15979 days ago · 3 km deep · 1 km away
  7. 1.917 km WNW of Elk Creek, California · 15979 days ago · 10 km deep · 92 km away
  8. 1.67 km W of Cobb, California · 15981 days ago · 3 km deep · 0 km away
  9. 1.55 km SW of Cobb, California · 15981 days ago · 0 km deep · 4 km away
  10. 2.59 km WSW of Cobb, California · 15981 days ago · 2 km deep · 2 km away
  11. 2.21 km SSE of Clearlake, California · 15981 days ago · 3 km deep · 22 km away
  12. 1.91 km SE of Clearlake, California · 15981 days ago · 3 km deep · 22 km away
  13. 2.31 km SSE of Clearlake, California · 15981 days ago · 3 km deep · 22 km away
  14. 2.41 km SSE of Clearlake, California · 15981 days ago · 3 km deep · 22 km away
  15. 1.61 km SSE of Clearlake, California · 15981 days ago · 2 km deep · 22 km away
  16. 1.92 km SE of Clearlake, California · 15981 days ago · 2 km deep · 22 km away
  17. 1.61 km SE of Clearlake, California · 15981 days ago · 3 km deep · 22 km away
  18. 2.92 km SE of Clearlake, California · 15981 days ago · 2 km deep · 22 km away
  19. 1.96 km WSW of Cobb, California · 15981 days ago · 0 km deep · 1 km away
  20. 1.74 km NE of Clearlake, California · 15982 days ago · 1 km deep · 27 km away

Earthquakes todayCalifornia earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1083509. Read Tue, Sep 22, 2026, 4:16 PM UTC.