California earthquakes

M1.9 earthquake 7 km W of Cobb, California

A magnitude 1.9 earthquake struck 7 km W of Cobb, California on Sat, Apr 2, 1983, 1:40 PM PST (21:40 UTC), 3 km (2 mi) below the surface.

A larger quake followed: M3.6 3 km E of Talmage, 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
1.9 (md), micro
Local time
UTC
1983-04-02 21:40:54 UTC
Depth
3.0 km (1.9 mi), shallow
Epicenter
38.815° N, 122.808° 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, 0.6 km in depth
Magnitude uncertainty
±0.25
Depth from
From location
Station coverage gap
91°
Stations used
13

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 82 in the 30 days before it.

After

  1. 1.66 km W of Cobb, California · 15886 days ago · 1 km deep · 1 km away
  2. 1.57 km W of Cobb, California · 15886 days ago · -1 km deep · 1 km away
  3. 1.92 km ESE of Geyserville, California · 15886 days ago · 6 km deep · 14 km away
  4. 2.97 km NW of Redwood Valley, California · 15885 days ago · 0 km deep · 68 km away
  5. 2.47 km W of Cobb, California · 15885 days ago · 3 km deep · 0 km away
  6. 1.87 km WSW of Cobb, California · 15885 days ago · 2 km deep · 2 km away
  7. 1.96 km W of Cobb, California · 15885 days ago · 1 km deep · 1 km away
  8. 1.59 km WSW of Cobb, California · 15885 days ago · 3 km deep · 2 km away
  9. 1.64 km W of Cobb, California · 15884 days ago · 0 km deep · 3 km away
  10. 1.77 km W of Cobb, California · 15883 days ago · 3 km deep · 0 km away
  11. 1.57 km W of Cobb, California · 15883 days ago · 3 km deep · 0 km away
  12. 1.86 km W of Cobb, California · 15883 days ago · 3 km deep · 1 km away
  13. 2.31 km ESE of Geyserville, California · 15883 days ago · 5 km deep · 14 km away
  14. 2.26 km NE of Black Point-Green Point, California · 15883 days ago · 2 km deep · 79 km away
  15. 1.77 km W of Cobb, California · 15883 days ago · 1 km deep · 1 km away
  16. 2.05 km SW of Cobb, California · 15883 days ago · 0 km deep · 4 km away
  17. 3.63 km E of Talmage, California · 15883 days ago · 7 km deep · 45 km away
  18. 1.92 km ENE of Talmage, California · 15882 days ago · 4 km deep · 46 km away
  19. 1.66 km W of Cobb, California · 15882 days ago · 3 km deep · 1 km away
  20. 2.427 km N of Potter Valley, California · 15882 days ago · 3 km deep · 87 km away
  21. 2.56 km W of Cobb, California · 15881 days ago · 3 km deep · 1 km away
  22. 2.25 km W of Cobb, California · 15880 days ago · -1 km deep · 2 km away
  23. 2.16 km W of Cobb, California · 15879 days ago · 3 km deep · 1 km away
  24. 1.68 km WSW of Cobb, California · 15879 days ago · 3 km deep · 1 km away
  25. 2.27 km W of Cobb, California · 15878 days ago · 0 km deep · 1 km away
  26. 2.46 km W of Cobb, California · 15878 days ago · 3 km deep · 1 km away
  27. 2.06 km W of Cobb, California · 15878 days ago · 3 km deep · 2 km away
  28. 2.56 km W of Cobb, California · 15877 days ago · 2 km deep · 1 km away
  29. 1.93 km NNE of Willows, California · 15876 days ago · 19 km deep · 99 km away
  30. 2.75 km SW of Cobb, California · 15876 days ago · 0 km deep · 4 km away
  31. 1.97 km W of Cobb, California · 15876 days ago · 3 km deep · 1 km away
  32. 1.68 km NNE of Larkfield-Wikiup, California · 15876 days ago · 4 km deep · 28 km away
  33. 1.611 km NNE of Brooktrails, California · 15876 days ago · 11 km deep · 94 km away
  34. 2.26 km SW of Cobb, California · 15875 days ago · 1 km deep · 5 km away
  35. 3.27 km WSW of Cobb, California · 15875 days ago · 3 km deep · 1 km away
  36. 3.07 km W of Cobb, California · 15875 days ago · 2 km deep · 0 km away
  37. 2.28 km WSW of Cobb, California · 15875 days ago · 1 km deep · 2 km away
  38. 1.95 km SW of Cobb, California · 15875 days ago · 0 km deep · 4 km away
  39. 2.77 km WSW of Cobb, California · 15874 days ago · 2 km deep · 1 km away
  40. 1.69 km W of Cobb, California · 15874 days ago · 1 km deep · 2 km away
  41. 1.67 km WSW of Cobb, California · 15873 days ago · 1 km deep · 1 km away
  42. 1.67 km WSW of Cobb, California · 15872 days ago · 1 km deep · 1 km away
  43. 1.922 km NE of Potter Valley, California · 15872 days ago · 6 km deep · 74 km away
  44. 1.97 km WSW of Cobb, California · 15871 days ago · 0 km deep · 1 km away
  45. 3.56 km W of Cobb, California · 15871 days ago · 3 km deep · 1 km away
  46. 1.85 km SW of Kenwood, California · 15871 days ago · 11 km deep · 52 km away
  47. 1.56 km W of Cobb, California · 15870 days ago · 3 km deep · 1 km away
  48. 1.94 km S of Cobb, California · 15870 days ago · 1 km deep · 8 km away
  49. 3.47 km WSW of Cobb, California · 15870 days ago · 4 km deep · 2 km away
  50. 1.57 km WSW of Cobb, California · 15870 days ago · 3 km deep · 1 km away
  51. 1.58 km WSW of Cobb, California · 15869 days ago · 6 km deep · 3 km away
  52. 1.95 km SSW of Cobb, California · 15869 days ago · -1 km deep · 7 km away
  53. 2.012 km ENE of Hidden Valley Lake, California · 15868 days ago · 6 km deep · 34 km away
  54. 3.118 km E of Potter Valley, California · 15868 days ago · 10 km deep · 59 km away
  55. 1.818 km E of Potter Valley, California · 15868 days ago · 8 km deep · 59 km away
  56. 1.65 km SW of Cobb, California · 15868 days ago · 0 km deep · 4 km away
  57. 2.14 km SW of Cobb, California · 15868 days ago · -1 km deep · 5 km away
  58. 2.04 km SSE of Clear Lake Riviera, California · 15868 days ago · 3 km deep · 15 km away
  59. 1.86 km W of Kenwood, California · 15867 days ago · 8 km deep · 49 km away
  60. 1.55 km ENE of Willits, California · 15867 days ago · 3 km deep · 81 km away

The first 60 of 135.

Before

  1. 2.110 km N of Benicia, California · 15888 days ago · 12 km deep · 95 km away
  2. 1.819 km SW of Cloverdale, California · 15891 days ago · -1 km deep · 36 km away
  3. 2.68 km ESE of Yountville, California · 15891 days ago · 17 km deep · 67 km away
  4. 2.13 km N of Healdsburg, California · 15892 days ago · 1 km deep · 20 km away
  5. 1.67 km WSW of Cobb, California · 15892 days ago · 1 km deep · 3 km away
  6. 2.42 km SSE of Comptche, California · 15893 days ago · 10 km deep · 82 km away
  7. 1.57 km W of Cobb, California · 15893 days ago · 3 km deep · 0 km away
  8. 2.07 km W of Cobb, California · 15893 days ago · 3 km deep · 1 km away
  9. 1.67 km WSW of Cobb, California · 15893 days ago · 2 km deep · 1 km away
  10. 2.18 km WSW of Cobb, California · 15893 days ago · 7 km deep · 2 km away
  11. 1.66 km WSW of Cobb, California · 15893 days ago · 1 km deep · 3 km away
  12. 1.56 km W of Cobb, California · 15895 days ago · 1 km deep · 1 km away
  13. 1.75 km E of Calpella, California · 15895 days ago · 2 km deep · 55 km away
  14. 1.79 km E of Hidden Valley Lake, California · 15895 days ago · 1 km deep · 31 km away
  15. 2.0Northern California · 15896 days ago · 2 km deep · 1 km away
  16. 3.06 km WSW of Cobb, California · 15897 days ago · 3 km deep · 2 km away
  17. 2.16 km W of Cobb, California · 15897 days ago · 3 km deep · 1 km away
  18. 2.58 km WSW of Cobb, California · 15897 days ago · 1 km deep · 2 km away
  19. 2.69 km WSW of Cobb, California · 15897 days ago · 2 km deep · 2 km away
  20. 2.024 km NE of Potter Valley, California · 15898 days ago · 11 km deep · 77 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1089869. Read Wed, Sep 30, 2026, 7:13 PM UTC.