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, Nov 8, 1983, 12:22 PM PST (20:22 UTC), 3 km (2 mi) below the surface.

A larger quake followed: M3.4 14 km N of Brooktrails, 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, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
1983-11-08 20:22:33 UTC
Depth
2.9 km (1.8 mi), shallow
Epicenter
38.815° N, 122.796° 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
±0.14
Depth from
From location
Station coverage gap
47°
Stations used
19

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 185 in the 60 days after this one and 131 in the 30 days before it.

After

  1. 1.86 km W of Cobb, California · 15669 days ago · 3 km deep · 1 km away
  2. 1.57 km WSW of Cobb, California · 15668 days ago · -1 km deep · 2 km away
  3. 2.05 km SSW of Cobb, California · 15668 days ago · -1 km deep · 7 km away
  4. 1.65 km SW of Cobb, California · 15668 days ago · 0 km deep · 3 km away
  5. 1.84 km S of Cobb, California · 15668 days ago · 1 km deep · 7 km away
  6. 1.97 km W of Cobb, California · 15668 days ago · 1 km deep · 2 km away
  7. 2.16 km ENE of Santa Rosa, California · 15667 days ago · 4 km deep · 40 km away
  8. 3.116 km NE of Brooktrails, California · 15667 days ago · -1 km deep · 88 km away
  9. 1.65 km SW of Cobb, California · 15666 days ago · -1 km deep · 3 km away
  10. 1.64 km WSW of Cobb, California · 15666 days ago · 1 km deep · 3 km away
  11. 1.87 km W of Cobb, California · 15666 days ago · 4 km deep · 1 km away
  12. 1.56 km W of Cobb, California · 15666 days ago · 2 km deep · 0 km away
  13. 1.7Northern California · 15666 days ago · -1 km deep · 2 km away
  14. 1.7Northern California · 15666 days ago · 1 km deep · 1 km away
  15. 2.76 km N of Cobb, California · 15666 days ago · 1 km deep · 11 km away
  16. 1.96 km NNE of Cobb, California · 15666 days ago · 2 km deep · 11 km away
  17. 2.37 km WSW of Cobb, California · 15665 days ago · 3 km deep · 2 km away
  18. 1.65 km SW of Cobb, California · 15664 days ago · 1 km deep · 5 km away
  19. 1.76 km W of Cobb, California · 15664 days ago · 3 km deep · 0 km away
  20. 2.56 km WSW of Cobb, California · 15664 days ago · 0 km deep · 1 km away
  21. 1.97 km W of Cobb, California · 15664 days ago · 0 km deep · 2 km away
  22. 1.69 km WSW of Cobb, California · 15663 days ago · 3 km deep · 3 km away
  23. 1.85 km SW of Cobb, California · 15663 days ago · 0 km deep · 3 km away
  24. 2.9Northern California · 15663 days ago · 2 km deep · 11 km away
  25. 1.86 km WNW of Cobb, California · 15663 days ago · 1 km deep · 2 km away
  26. 1.81 km NNW of Point Reyes Station, California · 15662 days ago · 2 km deep · 81 km away
  27. 2.26 km WSW of Cobb, California · 15661 days ago · 1 km deep · 2 km away
  28. 2.05 km SW of Cobb, California · 15661 days ago · 0 km deep · 3 km away
  29. 1.73 km E of Lower Lake, California · 15659 days ago · 3 km deep · 22 km away
  30. 1.916 km ENE of Potter Valley, California · 15659 days ago · 7 km deep · 65 km away
  31. 1.68 km ESE of Hidden Valley Lake, California · 15658 days ago · 8 km deep · 29 km away
  32. 1.55 km SW of Cobb, California · 15658 days ago · 0 km deep · 4 km away
  33. 1.96 km W of Cobb, California · 15658 days ago · -1 km deep · 0 km away
  34. 1.74 km W of Cobb, California · 15658 days ago · 0 km deep · 2 km away
  35. 2.15 km SW of Cobb, California · 15658 days ago · 0 km deep · 4 km away
  36. 1.86 km W of Cobb, California · 15658 days ago · 3 km deep · 0 km away
  37. 1.57 km WSW of Cobb, California · 15658 days ago · 2 km deep · 2 km away
  38. 2.319 km NNE of Upper Lake, California · 15657 days ago · 7 km deep · 55 km away
  39. 1.76 km W of Cobb, California · 15657 days ago · 3 km deep · 1 km away
  40. 2.415 km SE of Laytonville, California · 15657 days ago · 0 km deep · 98 km away
  41. 1.67 km WSW of Cobb, California · 15657 days ago · 0 km deep · 2 km away
  42. 2.36 km W of Cobb, California · 15657 days ago · 3 km deep · 1 km away
  43. 1.815 km SE of Laytonville, California · 15656 days ago · 0 km deep · 100 km away
  44. 2.45 km W of Glen Ellen, California · 15656 days ago · 6 km deep · 53 km away
  45. 1.67 km W of Cobb, California · 15655 days ago · 1 km deep · 1 km away
  46. 1.84 km ENE of Brooktrails, California · 15655 days ago · 9 km deep · 85 km away
  47. 1.616 km ENE of Potter Valley, California · 15655 days ago · 11 km deep · 65 km away
  48. 1.64 km NNW of Cobb, California · 15654 days ago · 1 km deep · 6 km away
  49. 1.66 km NNE of Cobb, California · 15654 days ago · 0 km deep · 11 km away
  50. 1.75 km WSW of Cobb, California · 15654 days ago · 1 km deep · 2 km away
  51. 1.75 km W of Glen Ellen, California · 15654 days ago · 4 km deep · 53 km away
  52. 1.67 km WSW of Cobb, California · 15654 days ago · 2 km deep · 1 km away
  53. 2.96 km W of Cobb, California · 15653 days ago · 3 km deep · 1 km away
  54. 1.77 km W of Cobb, California · 15653 days ago · 3 km deep · 1 km away
  55. 1.65 km WSW of Cobb, California · 15652 days ago · 1 km deep · 2 km away
  56. 2.16 km WSW of Cobb, California · 15652 days ago · 3 km deep · 2 km away
  57. 1.66 km W of Cobb, California · 15652 days ago · 1 km deep · 1 km away
  58. 2.018 km NE of Upper Lake, California · 15652 days ago · 7 km deep · 54 km away
  59. 2.57 km WSW of Cobb, California · 15651 days ago · 1 km deep · 2 km away
  60. 1.78 km W of Cobb, California · 15651 days ago · -1 km deep · 2 km away

The first 60 of 185.

Before

  1. 1.79 km NE of Hidden Valley Lake, California · 15669 days ago · 2 km deep · 27 km away
  2. 1.94 km N of Benicia, California · 15669 days ago · 4 km deep · 98 km away
  3. 2.46 km SW of Cobb, California · 15669 days ago · 1 km deep · 4 km away
  4. 2.216 km SSW of Point Reyes Station, California · 15669 days ago · 5 km deep · 98 km away
  5. 1.85 km SW of Cobb, California · 15669 days ago · 1 km deep · 4 km away
  6. 2.413 km W of Jenner, California · 15670 days ago · 0 km deep · 57 km away
  7. 2.012 km WNW of Jenner, California · 15670 days ago · 1 km deep · 55 km away
  8. 2.213 km WNW of Jenner, California · 15670 days ago · 0 km deep · 56 km away
  9. 1.86 km W of Cobb, California · 15670 days ago · 3 km deep · 1 km away
  10. 1.53 km ESE of Roseland, California · 15670 days ago · 6 km deep · 46 km away
  11. 1.613 km W of Cloverdale, California · 15671 days ago · 15 km deep · 32 km away
  12. 1.95 km W of Cobb, California · 15671 days ago · 0 km deep · 1 km away
  13. 1.55 km SW of Cobb, California · 15671 days ago · 0 km deep · 3 km away
  14. 2.05 km SW of Cobb, California · 15671 days ago · -1 km deep · 3 km away
  15. 1.75 km SW of Cobb, California · 15671 days ago · 0 km deep · 3 km away
  16. 1.610 km SSW of Hopland, California · 15671 days ago · -1 km deep · 31 km away
  17. 1.98 km WSW of Cobb, California · 15671 days ago · 1 km deep · 3 km away
  18. 1.63 km WNW of Hopland, California · 15671 days ago · 2 km deep · 36 km away
  19. 1.611 km W of Jenner, California · 15671 days ago · 6 km deep · 58 km away
  20. 1.67 km E of Willits, California · 15672 days ago · 8 km deep · 78 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1106490. Read Fri, Oct 2, 2026, 6:39 PM UTC.