California earthquakes

M1.7 earthquake 7 km WNW of Cobb, California

A magnitude 1.7 earthquake struck 7 km WNW of Cobb, California on Fri, Sep 6, 1985, 6:44 PM PDT (01:44 UTC), -1 km (-1 mi) below the surface.

A larger quake followed: M3.6 7 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
1.7 (md), micro
Local time
UTC
1985-09-07 01:44:05 UTC
Depth
-1.0 km (-0.6 mi), shallow
Epicenter
38.841° N, 122.801° 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, 0.8 km in depth
Magnitude uncertainty
±0.12
Depth from
From location
Station coverage gap
173°
Stations used
7

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 179 in the 60 days after this one and 113 in the 30 days before it.

After

  1. 1.64 km N of Cobb, California · 14999 days ago · 2 km deep · 7 km away
  2. 2.54 km WSW of Cobb, California · 14999 days ago · 2 km deep · 5 km away
  3. 1.69 km W of Cobb, California · 14999 days ago · 2 km deep · 3 km away
  4. 2.36 km W of Cobb, California · 14999 days ago · 3 km deep · 2 km away
  5. 2.58 km W of Cobb, California · 14998 days ago · 0 km deep · 3 km away
  6. 1.87 km W of Cobb, California · 14998 days ago · 0 km deep · 3 km away
  7. 2.16 km W of Cobb, California · 14998 days ago · 2 km deep · 3 km away
  8. 1.65 km WSW of Cobb, California · 14998 days ago · 1 km deep · 4 km away
  9. 2.74 km WSW of Cobb, California · 14998 days ago · 2 km deep · 4 km away
  10. 1.85 km SW of Cobb, California · 14998 days ago · 0 km deep · 6 km away
  11. 3.49 km NNW of Princeton, California · 14998 days ago · 19 km deep · 96 km away
  12. 2.012 km NNW of Moskowite Corner, California · 14998 days ago · 0 km deep · 58 km away
  13. 1.74 km SSW of Cobb, California · 14998 days ago · 2 km deep · 8 km away
  14. 1.98 km W of Cobb, California · 14996 days ago · 1 km deep · 3 km away
  15. 1.59 km ESE of Hidden Valley Lake, California · 14996 days ago · 4 km deep · 30 km away
  16. 1.89 km W of Cobb, California · 14996 days ago · 1 km deep · 4 km away
  17. 1.78 km W of Cobb, California · 14996 days ago · 0 km deep · 4 km away
  18. 1.99 km NW of Cobb, California · 14996 days ago · 1 km deep · 4 km away
  19. 1.63 km SW of Cobb, California · 14995 days ago · 0 km deep · 7 km away
  20. 2.010 km NW of Cobb, California · 14995 days ago · 0 km deep · 4 km away
  21. 2.06 km W of Cobb, California · 14995 days ago · 1 km deep · 3 km away
  22. 1.920 km NE of Upper Lake, California · 14995 days ago · -1 km deep · 53 km away
  23. 1.58 km WSW of Cobb, California · 14994 days ago · 0 km deep · 5 km away
  24. 1.96 km W of Cobb, California · 14994 days ago · 4 km deep · 2 km away
  25. 1.98 km W of Cobb, California · 14993 days ago · 1 km deep · 2 km away
  26. 1.812 km NE of Upper Lake, California · 14993 days ago · 2 km deep · 44 km away
  27. 2.13 km W of Glen Ellen, California · 14993 days ago · 8 km deep · 57 km away
  28. 1.93 km WSW of Glen Ellen, California · 14993 days ago · 8 km deep · 58 km away
  29. 2.16 km NE of Windsor, California · 14993 days ago · 5 km deep · 28 km away
  30. 2.2Northern California · 14993 days ago · 2 km deep · 44 km away
  31. 1.66 km W of Cobb, California · 14992 days ago · 0 km deep · 2 km away
  32. 2.512 km NE of Upper Lake, California · 14992 days ago · 3 km deep · 44 km away
  33. 1.64 km W of Cobb, California · 14992 days ago · 0 km deep · 3 km away
  34. 1.68 km W of Cobb, California · 14992 days ago · 1 km deep · 3 km away
  35. 2.44 km E of Williams, California · 14992 days ago · 16 km deep · 70 km away
  36. 1.65 km W of Cobb, California · 14992 days ago · 1 km deep · 2 km away
  37. 1.812 km NE of Upper Lake, California · 14992 days ago · 2 km deep · 44 km away
  38. 1.85 km W of Cobb, California · 14991 days ago · 0 km deep · 3 km away
  39. 1.612 km NE of Upper Lake, California · 14991 days ago · 4 km deep · 45 km away
  40. 1.94 km WSW of Cobb, California · 14991 days ago · 1 km deep · 5 km away
  41. 2.36 km W of Cobb, California · 14991 days ago · 3 km deep · 2 km away
  42. 1.86 km W of Cobb, California · 14990 days ago · 3 km deep · 2 km away
  43. 1.66 km WNW of Cobb, California · 14990 days ago · 1 km deep · 1 km away
  44. 1.78 km WNW of Cobb, California · 14990 days ago · -1 km deep · 2 km away
  45. 2.05 km NE of Williams, California · 14990 days ago · 18 km deep · 72 km away
  46. 1.86 km E of Williams, California · 14990 days ago · 4 km deep · 72 km away
  47. 1.66 km W of Cobb, California · 14990 days ago · 3 km deep · 3 km away
  48. 3.67 km W of Cobb, California · 14990 days ago · 10 km deep · 2 km away
  49. 2.15 km SW of Cobb, California · 14989 days ago · -1 km deep · 7 km away
  50. 1.95 km SW of Cobb, California · 14989 days ago · 0 km deep · 7 km away
  51. 1.76 km W of Cobb, California · 14989 days ago · 2 km deep · 3 km away
  52. 1.95 km SW of Cobb, California · 14989 days ago · 0 km deep · 6 km away
  53. 1.910 km NNW of Moskowite Corner, California · 14989 days ago · 9 km deep · 61 km away
  54. 1.86 km WSW of Cobb, California · 14989 days ago · 4 km deep · 4 km away
  55. 2.110 km E of Comptche, California · 14989 days ago · 8 km deep · 73 km away
  56. 1.65 km SW of Cobb, California · 14989 days ago · 0 km deep · 7 km away
  57. 2.55 km SW of Cobb, California · 14989 days ago · 1 km deep · 7 km away
  58. 2.55 km ENE of Williams, California · 14988 days ago · 10 km deep · 71 km away
  59. 2.09 km WNW of Arbuckle, California · 14988 days ago · 5 km deep · 62 km away
  60. 2.07 km ESE of Williams, California · 14988 days ago · 8 km deep · 71 km away

The first 60 of 179.

Before

  1. 1.68 km NW of Moskowite Corner, California · 14999 days ago · 2 km deep · 60 km away
  2. 1.96 km WSW of Cobb, California · 14999 days ago · 3 km deep · 4 km away
  3. 2.713 km NNW of Moskowite Corner, California · 14999 days ago · 2 km deep · 56 km away
  4. 1.66 km SW of Cobb, California · 14999 days ago · 0 km deep · 7 km away
  5. 2.36 km SW of Cobb, California · 14999 days ago · 0 km deep · 7 km away
  6. 1.56 km W of Cobb, California · 14999 days ago · 3 km deep · 2 km away
  7. 1.98 km WSW of Cobb, California · 14999 days ago · 0 km deep · 5 km away
  8. 1.56 km W of Cobb, California · 14999 days ago · 1 km deep · 1 km away
  9. 2.114 km NNW of Moskowite Corner, California · 15000 days ago · 2 km deep · 56 km away
  10. 2.413 km NW of Moskowite Corner, California · 15000 days ago · 0 km deep · 56 km away
  11. 2.313 km NNW of Moskowite Corner, California · 15000 days ago · 0 km deep · 57 km away
  12. 1.78 km W of Cobb, California · 15000 days ago · 0 km deep · 3 km away
  13. 2.13 km NNW of Larkfield-Wikiup, California · 15000 days ago · 4 km deep · 34 km away
  14. 1.710 km SSE of Moskowite Corner, California · 15000 days ago · 5 km deep · 79 km away
  15. 2.713 km NW of Moskowite Corner, California · 15000 days ago · 3 km deep · 56 km away
  16. 2.913 km NW of Moskowite Corner, California · 15000 days ago · 4 km deep · 56 km away
  17. 1.56 km W of Cobb, California · 15000 days ago · 3 km deep · 2 km away
  18. 1.65 km SW of Cobb, California · 15000 days ago · 0 km deep · 7 km away
  19. 1.913 km NW of Moskowite Corner, California · 15001 days ago · 0 km deep · 56 km away
  20. 1.913 km NNW of Moskowite Corner, California · 15002 days ago · 1 km deep · 57 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1131079. Read Wed, Sep 30, 2026, 8:03 PM UTC.