California earthquakes

M2.2 earthquake 5 km WSW of Cobb, California

A magnitude 2.2 earthquake struck 5 km WSW of Cobb, California on Fri, Dec 23, 1983, 12:57 PM PST (20:57 UTC), 0 km (0 mi) below the surface.

A larger quake followed: M2.6 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
2.2 (md), micro
Local time
UTC
1983-12-23 20:57:45 UTC
Depth
-0.1 km (-0.1 mi), shallow
Epicenter
38.805° N, 122.788° 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, 0.4 km in depth
Magnitude uncertainty
±0.12
Depth from
From location
Station coverage gap
70°
Stations used
11

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 168 in the 60 days after this one and 0 in the 30 days before it.

After

  1. 2.014 km NNW of Moskowite Corner, California · 15599 days ago · 2 km deep · 53 km away
  2. 2.017 km ENE of Potter Valley, California · 15598 days ago · 7 km deep · 64 km away
  3. 1.63 km ESE of Larkfield-Wikiup, California · 15598 days ago · 8 km deep · 34 km away
  4. 1.77 km WSW of Cobb, California · 15598 days ago · 1 km deep · 2 km away
  5. 2.26 km W of Cobb, California · 15598 days ago · 3 km deep · 2 km away
  6. 1.65 km NW of Napa, California · 15597 days ago · 11 km deep · 66 km away
  7. 1.78 km W of Cobb, California · 15597 days ago · 8 km deep · 3 km away
  8. 1.77 km W of Cobb, California · 15597 days ago · 3 km deep · 2 km away
  9. 2.6Northern California · 15597 days ago · -1 km deep · 3 km away
  10. 1.65 km SSW of Calistoga, California · 15596 days ago · 6 km deep · 33 km away
  11. 1.715 km NE of Angwin, California · 15596 days ago · 20 km deep · 41 km away
  12. 1.86 km ENE of Windsor, California · 15595 days ago · 1 km deep · 26 km away
  13. 2.16 km W of Cobb, California · 15595 days ago · 1 km deep · 2 km away
  14. 1.67 km WSW of Cobb, California · 15595 days ago · 1 km deep · 2 km away
  15. 1.818 km NNE of Upper Lake, California · 15595 days ago · 7 km deep · 57 km away
  16. 1.97 km S of Willows, California · 15595 days ago · 24 km deep · 89 km away
  17. 1.76 km W of Cobb, California · 15594 days ago · 3 km deep · 2 km away
  18. 2.36 km WSW of Cobb, California · 15594 days ago · 0 km deep · 1 km away
  19. 1.86 km WSW of Cobb, California · 15594 days ago · 3 km deep · 1 km away
  20. 1.96 km W of Cobb, California · 15594 days ago · 4 km deep · 1 km away
  21. 1.67 km ENE of Black Point-Green Point, California · 15593 days ago · 16 km deep · 79 km away
  22. 1.97 km WSW of Cobb, California · 15593 days ago · 1 km deep · 2 km away
  23. 2.57 km WSW of Cobb, California · 15593 days ago · 1 km deep · 2 km away
  24. 2.15 km SW of Cobb, California · 15593 days ago · 0 km deep · 3 km away
  25. 1.59 km WSW of Cobb, California · 15593 days ago · 1 km deep · 3 km away
  26. 1.97 km WSW of Cobb, California · 15592 days ago · 2 km deep · 1 km away
  27. 2.26 km W of Cobb, California · 15592 days ago · 0 km deep · 1 km away
  28. 1.6Northern California · 15592 days ago · 1 km deep · 2 km away
  29. 1.55 km WSW of Cobb, California · 15591 days ago · 0 km deep · 1 km away
  30. 1.77 km WSW of Cobb, California · 15591 days ago · 1 km deep · 2 km away
  31. 2.69 km WSW of Cobb, California · 15591 days ago · 2 km deep · 3 km away
  32. 1.75 km WSW of Cobb, California · 15591 days ago · 3 km deep · 2 km away
  33. 2.69 km WSW of Cobb, California · 15591 days ago · 2 km deep · 3 km away
  34. 1.621 km NE of Potter Valley, California · 15591 days ago · 5 km deep · 72 km away
  35. 1.57 km WSW of Cobb, California · 15589 days ago · 3 km deep · 2 km away
  36. 1.57 km WSW of Cobb, California · 15589 days ago · 3 km deep · 2 km away
  37. 1.68 km ENE of Hidden Valley Lake, California · 15588 days ago · 7 km deep · 28 km away
  38. 1.76 km W of Cobb, California · 15588 days ago · 3 km deep · 2 km away
  39. 2.46 km W of Cobb, California · 15588 days ago · 3 km deep · 1 km away
  40. 2.66 km W of Cobb, California · 15587 days ago · 2 km deep · 2 km away
  41. 1.77 km W of Cobb, California · 15587 days ago · 3 km deep · 2 km away
  42. 1.714 km S of Lodoga, California · 15587 days ago · 15 km deep · 48 km away
  43. 1.64 km SSW of Cobb, California · 15587 days ago · -1 km deep · 5 km away
  44. 2.36 km W of Cobb, California · 15587 days ago · 1 km deep · 2 km away
  45. 1.69 km SSE of Sea Ranch, California · 15586 days ago · 2 km deep · 57 km away
  46. 1.914 km NE of Upper Lake, California · 15586 days ago · 7 km deep · 52 km away
  47. 1.97 km WSW of Cobb, California · 15586 days ago · 2 km deep · 2 km away
  48. 2.07 km W of Cobb, California · 15586 days ago · 3 km deep · 2 km away
  49. 1.612 km NNW of Moskowite Corner, California · 15586 days ago · 2 km deep · 55 km away
  50. 1.622 km NE of Potter Valley, California · 15586 days ago · 7 km deep · 76 km away
  51. 1.68 km WSW of Cobb, California · 15585 days ago · 3 km deep · 2 km away
  52. 2.14 km NW of Kelseyville, California · 15585 days ago · 4 km deep · 24 km away
  53. 1.65 km WSW of Cobb, California · 15585 days ago · 1 km deep · 1 km away
  54. 2.26 km W of Cobb, California · 15584 days ago · 3 km deep · 2 km away
  55. 1.68 km WSW of Cobb, California · 15584 days ago · 3 km deep · 2 km away
  56. 2.46 km W of Cobb, California · 15584 days ago · 3 km deep · 2 km away
  57. 1.76 km W of Cobb, California · 15584 days ago · 3 km deep · 2 km away
  58. 1.70 km ESE of Crockett, California · 15583 days ago · 9 km deep · 98 km away
  59. 1.9near the coast of Northern California · 15582 days ago · 8 km deep · 78 km away
  60. 2.415 km W of Guinda, California · 15582 days ago · 8 km deep · 36 km away

The first 60 of 168.

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1108927. Read Tue, Sep 22, 2026, 8:46 PM UTC.