California earthquakes

M2.5 earthquake 5 km SW of Cobb, California

A magnitude 2.5 earthquake struck 5 km SW of Cobb, California on Tue, Sep 24, 1985, 9:37 PM PDT (04:37 UTC), 0 km (0 mi) below the surface.

A larger quake followed: M2.5 8 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.

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The earthquake

Magnitude
2.5 (md), micro
Local time
UTC
1985-09-25 04:37:30 UTC
Depth
0.5 km (0.3 mi), shallow
Epicenter
38.780° N, 122.765° 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 0.1 km horizontally, 0.5 km in depth
Magnitude uncertainty
±0.17
Depth from
From location
Station coverage gap
37°
Stations used
29

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 172 in the 60 days after this one and 0 in the 30 days before it.

After

  1. 1.812 km WNW of Calistoga, California · 14964 days ago · 8 km deep · 17 km away
  2. 2.58 km W of Cobb, California · 14963 days ago · 1 km deep · 7 km away
  3. 1.64 km NW of Redwood Valley, California · 14963 days ago · 7 km deep · 70 km away
  4. 2.34 km WSW of Cobb, California · 14963 days ago · 1 km deep · 3 km away
  5. 1.711 km NW of Moskowite Corner, California · 14962 days ago · 4 km deep · 51 km away
  6. 2.25 km WSW of Cobb, California · 14962 days ago · 1 km deep · 4 km away
  7. 1.86 km SSE of Moskowite Corner, California · 14962 days ago · 5 km deep · 67 km away
  8. 2.24 km W of Cobb, California · 14961 days ago · 0 km deep · 5 km away
  9. 3.28 km SE of Hopland, California · 14961 days ago · 4 km deep · 29 km away
  10. 1.58 km SE of Hopland, California · 14960 days ago · 1 km deep · 29 km away
  11. 1.613 km SSE of Boonville, California · 14960 days ago · -1 km deep · 48 km away
  12. 2.48 km SE of Hopland, California · 14960 days ago · 2 km deep · 29 km away
  13. 2.78 km NW of Redwood Valley, California · 14960 days ago · -1 km deep · 75 km away
  14. 2.56 km W of Cobb, California · 14960 days ago · 3 km deep · 6 km away
  15. 1.98 km SE of Hopland, California · 14960 days ago · 1 km deep · 29 km away
  16. 1.88 km WSW of Cobb, California · 14959 days ago · 3 km deep · 4 km away
  17. 1.8Northern California · 14959 days ago · 0 km deep · 6 km away
  18. 2.28 km W of Cobb, California · 14959 days ago · 0 km deep · 7 km away
  19. 2.55 km SW of Cobb, California · 14957 days ago · 0 km deep · 1 km away
  20. 1.95 km SW of Cobb, California · 14957 days ago · 0 km deep · 1 km away
  21. 1.65 km W of Cobb, California · 14957 days ago · 0 km deep · 6 km away
  22. 1.57 km WSW of Cobb, California · 14957 days ago · 1 km deep · 3 km away
  23. 2.112 km NNW of Potter Valley, California · 14957 days ago · 5 km deep · 80 km away
  24. 2.05 km SW of Cobb, California · 14956 days ago · 2 km deep · 2 km away
  25. 1.97 km NNE of Upper Lake, California · 14956 days ago · 7 km deep · 51 km away
  26. 2.67 km WSW of Glen Ellen, California · 14956 days ago · 8 km deep · 52 km away
  27. 2.04 km WSW of Cobb, California · 14955 days ago · 1 km deep · 3 km away
  28. 2.05 km WNW of Cobb, California · 14954 days ago · 2 km deep · 7 km away
  29. 2.46 km WSW of Cobb, California · 14953 days ago · -1 km deep · 3 km away
  30. 1.67 km WSW of Cobb, California · 14953 days ago · 1 km deep · 4 km away
  31. 1.820 km ENE of Clearlake, California · 14953 days ago · 6 km deep · 42 km away
  32. 1.66 km W of Cobb, California · 14953 days ago · 3 km deep · 5 km away
  33. 1.55 km WSW of Cobb, California · 14953 days ago · 1 km deep · 3 km away
  34. 1.818 km E of Potter Valley, California · 14953 days ago · 6 km deep · 65 km away
  35. 1.66 km WSW of Cobb, California · 14952 days ago · 4 km deep · 4 km away
  36. 1.77 km WSW of Cobb, California · 14952 days ago · 1 km deep · 5 km away
  37. 1.76 km ENE of Willits, California · 14951 days ago · 4 km deep · 85 km away
  38. 1.78 km WSW of Cobb, California · 14951 days ago · 4 km deep · 4 km away
  39. 1.86 km W of Cobb, California · 14951 days ago · 0 km deep · 6 km away
  40. 2.06 km W of Cobb, California · 14951 days ago · 0 km deep · 6 km away
  41. 1.97 km WSW of Cobb, California · 14950 days ago · 4 km deep · 4 km away
  42. 2.38 km W of Cobb, California · 14950 days ago · 1 km deep · 6 km away
  43. 1.96 km W of Cobb, California · 14949 days ago · 1 km deep · 5 km away
  44. 2.27 km W of Cobb, California · 14948 days ago · 4 km deep · 5 km away
  45. 1.76 km W of Cobb, California · 14948 days ago · 2 km deep · 5 km away
  46. 1.67 km WSW of Cobb, California · 14948 days ago · 0 km deep · 4 km away
  47. 1.75 km SW of Cobb, California · 14947 days ago · 1 km deep · 1 km away
  48. 1.86 km WSW of Cobb, California · 14947 days ago · 3 km deep · 4 km away
  49. 1.75 km W of Cobb, California · 14947 days ago · 0 km deep · 6 km away
  50. 2.03 km SW of Cobb, California · 14947 days ago · 2 km deep · 2 km away
  51. 3.46 km W of Cobb, California · 14947 days ago · 3 km deep · 5 km away
  52. 1.94 km WSW of Cobb, California · 14947 days ago · 0 km deep · 3 km away
  53. 1.66 km SW of Cobb, California · 14947 days ago · 0 km deep · 1 km away
  54. 2.47 km W of Cobb, California · 14946 days ago · 1 km deep · 7 km away
  55. 1.97 km W of Cobb, California · 14946 days ago · 1 km deep · 7 km away
  56. 2.47 km W of Cobb, California · 14946 days ago · 1 km deep · 7 km away
  57. 1.66 km SW of Cobb, California · 14946 days ago · 0 km deep · 1 km away
  58. 2.48 km WSW of Cobb, California · 14946 days ago · 2 km deep · 5 km away
  59. 2.04 km WSW of Cobb, California · 14946 days ago · 1 km deep · 3 km away
  60. 1.810 km ESE of Boonville, California · 14945 days ago · 7 km deep · 48 km away

The first 60 of 172.

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc55782. Read Tue, Sep 22, 2026, 11:36 AM UTC.