California earthquakes

M2.0 earthquake 8 km WSW of Cobb, California

A magnitude 2.0 earthquake struck 8 km WSW of Cobb, California on Sat, Oct 4, 1975, 12:07 PM PDT (19:07 UTC), 3 km (2 mi) below the surface.

A larger quake followed: M3.2 32 km NNE of Potter Valley, 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
2.0 (md), micro
Local time
UTC
1975-10-04 19:07:38 UTC
Depth
3.0 km (1.9 mi), shallow
Epicenter
38.799° N, 122.814° 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
±0.22
Depth from
From location
Station coverage gap
47°
Stations used
21

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 46 in the 60 days after this one and 39 in the 30 days before it.

After

  1. 1.67 km W of Cobb, California · 18616 days ago · 0 km deep · 1 km away
  2. 1.86 km W of Cobb, California · 18615 days ago · 3 km deep · 3 km away
  3. 1.56 km WSW of Cobb, California · 18612 days ago · 2 km deep · 2 km away
  4. 1.86 km W of Cobb, California · 18610 days ago · 1 km deep · 2 km away
  5. 1.86 km W of Cobb, California · 18610 days ago · 1 km deep · 2 km away
  6. 2.04 km W of Deer Park, California · 18610 days ago · 8 km deep · 39 km away
  7. 3.232 km NNE of Potter Valley, California · 18608 days ago · 2 km deep · 86 km away
  8. 2.44 km SW of Glen Ellen, California · 18607 days ago · 9 km deep · 55 km away
  9. 1.67 km W of Cobb, California · 18602 days ago · 0 km deep · 3 km away
  10. 1.54 km SSE of Clear Lake Riviera, California · 18600 days ago · 2 km deep · 17 km away
  11. 2.313 km E of Angwin, California · 18598 days ago · 12 km deep · 53 km away
  12. 3.313 km E of Angwin, California · 18598 days ago · 11 km deep · 53 km away
  13. 2.214 km NNW of Moskowite Corner, California · 18598 days ago · 10 km deep · 54 km away
  14. 2.17 km W of Cobb, California · 18596 days ago · 0 km deep · 3 km away
  15. 1.67 km W of Cobb, California · 18596 days ago · 3 km deep · 2 km away
  16. 1.77 km SSE of Talmage, California · 18591 days ago · 5 km deep · 41 km away
  17. 1.64 km WSW of Cobb, California · 18590 days ago · 1 km deep · 4 km away
  18. 1.71 km NW of Larkfield-Wikiup, California · 18590 days ago · 0 km deep · 31 km away
  19. 1.87 km N of Hopland, California · 18588 days ago · 5 km deep · 37 km away
  20. 1.66 km WSW of Cobb, California · 18586 days ago · 1 km deep · 2 km away
  21. 1.811 km NNE of Angwin, California · 18582 days ago · 6 km deep · 39 km away
  22. 2.35 km WSW of Rutherford, California · 18582 days ago · 11 km deep · 49 km away
  23. 1.96 km WSW of Cobb, California · 18582 days ago · 1 km deep · 2 km away
  24. 1.86 km W of Cobb, California · 18581 days ago · 1 km deep · 3 km away
  25. 1.56 km WSW of Cobb, California · 18581 days ago · 1 km deep · 2 km away
  26. 1.84 km WSW of Cobb, California · 18580 days ago · 3 km deep · 3 km away
  27. 1.66 km WSW of Cobb, California · 18577 days ago · 1 km deep · 2 km away
  28. 2.719 km SW of Stonyford, California · 18575 days ago · 10 km deep · 52 km away
  29. 1.89 km NW of Cobb, California · 18574 days ago · 2 km deep · 9 km away
  30. 2.28 km WSW of Cobb, California · 18572 days ago · -1 km deep · 0 km away
  31. 1.86 km W of Cobb, California · 18572 days ago · 3 km deep · 3 km away
  32. 1.55 km SE of Clear Lake Riviera, California · 18570 days ago · 2 km deep · 18 km away
  33. 1.76 km W of Cobb, California · 18570 days ago · 4 km deep · 3 km away
  34. 2.47 km NE of Sonoma, California · 18569 days ago · 11 km deep · 62 km away
  35. 3.14 km ENE of Willits, California · 18568 days ago · 10 km deep · 82 km away
  36. 2.58 km ENE of Willits, California · 18568 days ago · -1 km deep · 82 km away
  37. 1.94 km W of Cobb, California · 18565 days ago · 4 km deep · 4 km away
  38. 1.911 km NE of Angwin, California · 18565 days ago · 11 km deep · 42 km away
  39. 1.73 km ESE of Cloverdale, California · 18563 days ago · 3 km deep · 14 km away
  40. 2.23 km NNW of Larkfield-Wikiup, California · 18562 days ago · 5 km deep · 29 km away
  41. 1.76 km W of Cobb, California · 18561 days ago · 0 km deep · 2 km away
  42. 1.61 km NE of Clear Lake Riviera, California · 18560 days ago · 1 km deep · 21 km away
  43. 1.67 km W of Cobb, California · 18559 days ago · 3 km deep · 2 km away
  44. 1.98 km WSW of Cobb, California · 18559 days ago · 4 km deep · 0 km away
  45. 2.35 km E of Vallejo, California · 18558 days ago · 7 km deep · 94 km away
  46. 1.7Northern California · 18557 days ago · 9 km deep · 22 km away

Before

  1. 3.17 km WSW of Cobb, California · 18616 days ago · 5 km deep · 1 km away
  2. 3.17 km WSW of Cobb, California · 18616 days ago · 4 km deep · 1 km away
  3. 2.26 km WSW of Cobb, California · 18616 days ago · -1 km deep · 2 km away
  4. 2.74 km WSW of Clear Lake Riviera, California · 18617 days ago · -1 km deep · 16 km away
  5. 3.04 km WSW of Clear Lake Riviera, California · 18617 days ago · -1 km deep · 16 km away
  6. 1.73 km NE of Cobb, California · 18618 days ago · 2 km deep · 11 km away
  7. 2.03 km W of Clear Lake Riviera, California · 18620 days ago · 2 km deep · 18 km away
  8. 1.74 km WSW of Cobb, California · 18620 days ago · 4 km deep · 4 km away
  9. 1.63 km W of Clear Lake Riviera, California · 18620 days ago · 2 km deep · 18 km away
  10. 1.93 km W of Clear Lake Riviera, California · 18620 days ago · 2 km deep · 18 km away
  11. 1.93 km W of Clear Lake Riviera, California · 18620 days ago · 2 km deep · 18 km away
  12. 1.63 km W of Clear Lake Riviera, California · 18620 days ago · 2 km deep · 18 km away
  13. 1.93 km W of Clear Lake Riviera, California · 18620 days ago · 2 km deep · 18 km away
  14. 1.53 km WNW of Clear Lake Riviera, California · 18620 days ago · 2 km deep · 19 km away
  15. 2.03 km W of Clear Lake Riviera, California · 18620 days ago · 2 km deep · 18 km away
  16. 2.63 km W of Clear Lake Riviera, California · 18620 days ago · 2 km deep · 18 km away
  17. 2.13 km W of Clear Lake Riviera, California · 18620 days ago · 2 km deep · 18 km away
  18. 2.37 km W of Cobb, California · 18621 days ago · 4 km deep · 2 km away
  19. 1.63 km W of Clear Lake Riviera, California · 18621 days ago · 2 km deep · 18 km away
  20. 2.63 km W of Clear Lake Riviera, California · 18621 days ago · 2 km deep · 18 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1026839. Read Tue, Sep 22, 2026, 10:31 PM UTC.