California earthquakes

M1.7 earthquake 8 km SW of Cobb, California

A magnitude 1.7 earthquake struck 8 km SW of Cobb, California on Thu, Jul 25, 1985, 11:29 AM PDT (18:29 UTC), 3 km (2 mi) below the surface.

A larger quake followed: M4.0 5 km SW 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
1.7 (md), micro
Local time
UTC
1985-07-25 18:29:42 UTC
Depth
3.1 km (1.9 mi), shallow
Epicenter
38.778° 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 0.9 km horizontally, 1.6 km in depth
Magnitude uncertainty
±0.23
Depth from
From location
Station coverage gap
146°
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: 182 in the 60 days after this one and 81 in the 30 days before it.

After

  1. 1.66 km W of Cobb, California · 15040 days ago · 3 km deep · 5 km away
  2. 3.57 km WSW of Cobb, California · 15040 days ago · 2 km deep · 3 km away
  3. 3.57 km WSW of Cobb, California · 15040 days ago · 3 km deep · 4 km away
  4. 2.18 km W of Cobb, California · 15040 days ago · 0 km deep · 4 km away
  5. 1.97 km WSW of Cobb, California · 15040 days ago · 1 km deep · 3 km away
  6. 1.87 km WSW of Cobb, California · 15040 days ago · 1 km deep · 3 km away
  7. 2.27 km W of Cobb, California · 15040 days ago · 1 km deep · 4 km away
  8. 1.68 km W of Cobb, California · 15039 days ago · 1 km deep · 5 km away
  9. 1.67 km W of Cobb, California · 15039 days ago · 0 km deep · 6 km away
  10. 1.910 km S of Comptche, California · 15039 days ago · 5 km deep · 81 km away
  11. 1.67 km W of Cobb, California · 15038 days ago · 1 km deep · 4 km away
  12. 2.027 km N of Potter Valley, California · 15038 days ago · 4 km deep · 92 km away
  13. 1.95 km SW of Cobb, California · 15037 days ago · 0 km deep · 3 km away
  14. 1.67 km W of Cobb, California · 15037 days ago · 3 km deep · 4 km away
  15. 2.15 km WSW of Cobb, California · 15036 days ago · 0 km deep · 3 km away
  16. 3.35 km WSW of Cobb, California · 15036 days ago · 0 km deep · 3 km away
  17. 1.76 km WSW of Cobb, California · 15036 days ago · 0 km deep · 2 km away
  18. 1.610 km W of Cobb, California · 15035 days ago · 2 km deep · 5 km away
  19. 1.78 km W of Cobb, California · 15035 days ago · 0 km deep · 6 km away
  20. 1.74 km E of Cloverdale, California · 15034 days ago · 22 km deep · 15 km away
  21. 1.70 km SSE of Redwood Valley, California · 15033 days ago · 6 km deep · 65 km away
  22. 1.811 km NE of Potter Valley, California · 15033 days ago · 1 km deep · 72 km away
  23. 1.60 km WSW of Redwood Valley, California · 15033 days ago · 7 km deep · 65 km away
  24. 2.80 km NNE of Redwood Valley, California · 15033 days ago · 6 km deep · 65 km away
  25. 1.50 km SW of Redwood Valley, California · 15033 days ago · 4 km deep · 65 km away
  26. 1.55 km W of Cobb, California · 15033 days ago · 0 km deep · 6 km away
  27. 1.76 km W of Cobb, California · 15033 days ago · 3 km deep · 4 km away
  28. 1.65 km WSW of Hopland, California · 15032 days ago · 5 km deep · 38 km away
  29. 2.021 km NNE of Upper Lake, California · 15031 days ago · 6 km deep · 64 km away
  30. 1.86 km E of Calpella, California · 15031 days ago · 5 km deep · 59 km away
  31. 1.53 km SSW of Cobb, California · 15031 days ago · 1 km deep · 5 km away
  32. 2.87 km W of Cobb, California · 15030 days ago · 3 km deep · 4 km away
  33. 2.26 km WSW of Cobb, California · 15028 days ago · 0 km deep · 2 km away
  34. 3.27 km W of Cobb, California · 15028 days ago · 1 km deep · 5 km away
  35. 2.14 km WSW of Cobb, California · 15027 days ago · 1 km deep · 3 km away
  36. 1.910 km SW of Williams, California · 15027 days ago · 15 km deep · 59 km away
  37. 1.66 km WSW of Cobb, California · 15027 days ago · 0 km deep · 2 km away
  38. 2.34 km NNE of Boonville, California · 15026 days ago · 4 km deep · 56 km away
  39. 1.66 km SW of Cobb, California · 15026 days ago · 0 km deep · 2 km away
  40. 3.25 km SW of Cobb, California · 15026 days ago · 2 km deep · 3 km away
  41. 4.05 km SW of Cobb, California · 15026 days ago · -1 km deep · 2 km away
  42. 2.15 km SW of Cobb, California · 15026 days ago · 0 km deep · 2 km away
  43. 2.14 km NW of Redwood Valley, California · 15026 days ago · 5 km deep · 69 km away
  44. 1.64 km WSW of Cobb, California · 15025 days ago · 1 km deep · 3 km away
  45. 2.08 km SSW of Colusa, California · 15025 days ago · 6 km deep · 76 km away
  46. 2.16 km W of Cobb, California · 15025 days ago · 3 km deep · 5 km away
  47. 1.96 km W of Cobb, California · 15024 days ago · 1 km deep · 5 km away
  48. 2.16 km W of Cobb, California · 15024 days ago · 0 km deep · 5 km away
  49. 1.58 km WSW of Cobb, California · 15024 days ago · 4 km deep · 3 km away
  50. 1.94 km W of Cobb, California · 15024 days ago · 0 km deep · 5 km away
  51. 1.85 km WNW of Cobb, California · 15022 days ago · 2 km deep · 8 km away
  52. 2.19 km E of Hidden Valley Lake, California · 15022 days ago · 7 km deep · 30 km away
  53. 1.77 km W of Cobb, California · 15022 days ago · 0 km deep · 5 km away
  54. 2.19 km WSW of Cobb, California · 15021 days ago · 1 km deep · 4 km away
  55. 1.56 km W of Cobb, California · 15021 days ago · 3 km deep · 5 km away
  56. 2.67 km WSW of Cobb, California · 15020 days ago · 0 km deep · 3 km away
  57. 2.67 km W of Cobb, California · 15020 days ago · 3 km deep · 4 km away
  58. 1.67 km WSW of Cobb, California · 15020 days ago · 0 km deep · 3 km away
  59. 2.16 km WSW of Cobb, California · 15020 days ago · 4 km deep · 3 km away
  60. 1.90 km ESE of Redwood Valley, California · 15019 days ago · 6 km deep · 65 km away

The first 60 of 182.

Before

  1. 1.76 km WNW of Cobb, California · 15040 days ago · 1 km deep · 7 km away
  2. 1.79 km ESE of Hidden Valley Lake, California · 15040 days ago · 7 km deep · 30 km away
  3. 1.97 km W of Cobb, California · 15041 days ago · 1 km deep · 4 km away
  4. 2.18 km W of Cobb, California · 15043 days ago · -1 km deep · 5 km away
  5. 2.91 km WSW of Stinson Beach, California · 15043 days ago · 10 km deep · 99 km away
  6. 1.66 km W of Glen Ellen, California · 15044 days ago · 3 km deep · 48 km away
  7. 1.67 km SE of Willits, California · 15045 days ago · 6 km deep · 77 km away
  8. 1.87 km NW of Cobb, California · 15045 days ago · 4 km deep · 11 km away
  9. 1.713 km NE of Hidden Valley Lake, California · 15045 days ago · 14 km deep · 33 km away
  10. 1.67 km WSW of Cobb, California · 15046 days ago · 1 km deep · 2 km away
  11. 1.85 km W of Cobb, California · 15046 days ago · 0 km deep · 5 km away
  12. 2.85 km W of Cobb, California · 15046 days ago · 0 km deep · 5 km away
  13. 1.86 km WSW of Cobb, California · 15046 days ago · 1 km deep · 3 km away
  14. 2.06 km WSW of Cobb, California · 15046 days ago · 1 km deep · 3 km away
  15. 1.76 km W of Cobb, California · 15048 days ago · 3 km deep · 4 km away
  16. 2.57 km W of Cobb, California · 15048 days ago · 3 km deep · 4 km away
  17. 1.96 km WSW of Cobb, California · 15048 days ago · 3 km deep · 3 km away
  18. 2.26 km W of Cobb, California · 15049 days ago · 3 km deep · 5 km away
  19. 1.86 km W of Cobb, California · 15049 days ago · 3 km deep · 5 km away
  20. 1.67 km WSW of Cobb, California · 15049 days ago · 1 km deep · 2 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1129989. Read Mon, Sep 28, 2026, 6:38 PM UTC.