California earthquakes

M3.1 earthquake 14 km N of Brooktrails, California

A magnitude 3.1 earthquake struck 14 km N of Brooktrails, California on Sun, Apr 7, 1985, 9:06 AM PST (17:06 UTC), -1 km (0 mi) below the surface.

A larger quake followed: M3.1 6 km W of Cobb, California. This one was a foreshock.

Brooktrails 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
3.1 (md), minor
Local time
UTC
1985-04-07 17:06:35 UTC
Depth
-0.7 km (-0.4 mi), shallow
Epicenter
39.576° N, 123.361° 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, 3.1 km in depth
Magnitude uncertainty
±0.11
Depth from
From location
Station coverage gap
61°
Stations used
19

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 181 in the 60 days after this one and 18 in the 30 days before it.

After

  1. 1.820 km WSW of Williams, California · 15143 days ago · 4 km deep · 99 km away
  2. 3.16 km W of Cobb, California · 15143 days ago · 4 km deep · 97 km away
  3. 1.78 km W of Cobb, California · 15143 days ago · 0 km deep · 97 km away
  4. 1.96 km W of Cobb, California · 15143 days ago · 0 km deep · 97 km away
  5. 1.76 km W of Cobb, California · 15142 days ago · 3 km deep · 97 km away
  6. 1.96 km W of Cobb, California · 15142 days ago · 3 km deep · 98 km away
  7. 2.26 km W of Cobb, California · 15141 days ago · 3 km deep · 97 km away
  8. 3.26 km WSW of Cobb, California · 15141 days ago · 4 km deep · 99 km away
  9. 2.16 km WSW of Cobb, California · 15141 days ago · 3 km deep · 98 km away
  10. 1.56 km WSW of Cobb, California · 15141 days ago · 4 km deep · 99 km away
  11. 2.08 km WSW of Cobb, California · 15141 days ago · 4 km deep · 100 km away
  12. 1.67 km WSW of Cobb, California · 15141 days ago · 1 km deep · 98 km away
  13. 2.516 km NNE of Elk Creek, California · 15141 days ago · 0 km deep · 80 km away
  14. 1.83 km WSW of Myers Flat, California · 15140 days ago · 5 km deep · 89 km away
  15. 2.29 km WSW of Cobb, California · 15140 days ago · 1 km deep · 98 km away
  16. 1.74 km WSW of Laytonville, California · 15140 days ago · 4 km deep · 17 km away
  17. 2.311 km SSE of Laytonville, California · 15139 days ago · 7 km deep · 6 km away
  18. 2.67 km WSW of Cobb, California · 15138 days ago · 1 km deep · 98 km away
  19. 2.57 km WSW of Cobb, California · 15138 days ago · 1 km deep · 98 km away
  20. 1.615 km WSW of Laytonville, California · 15137 days ago · 3 km deep · 26 km away
  21. 1.67 km WSW of Cobb, California · 15137 days ago · 3 km deep · 99 km away
  22. 1.75 km W of Cobb, California · 15136 days ago · 4 km deep · 97 km away
  23. 2.0Northern California · 15136 days ago · 1 km deep · 99 km away
  24. 2.08 km WSW of Cobb, California · 15136 days ago · 3 km deep · 98 km away
  25. 2.07 km NE of Covelo, California · 15136 days ago · 5 km deep · 33 km away
  26. 2.28 km WSW of Cobb, California · 15135 days ago · 0 km deep · 98 km away
  27. 1.918 km NE of Upper Lake, California · 15135 days ago · 7 km deep · 59 km away
  28. 2.38 km WSW of Cobb, California · 15135 days ago · 3 km deep · 98 km away
  29. 1.710 km SSE of Laytonville, California · 15134 days ago · 7 km deep · 6 km away
  30. 2.0Northern California · 15133 days ago · 1 km deep · 98 km away
  31. 2.07 km W of Cobb, California · 15133 days ago · 1 km deep · 96 km away
  32. 2.221 km WSW of Williams, California · 15133 days ago · 0 km deep · 99 km away
  33. 1.67 km WSW of Cobb, California · 15132 days ago · 0 km deep · 99 km away
  34. 1.611 km W of Cobb, California · 15131 days ago · -1 km deep · 95 km away
  35. 1.77 km W of Cobb, California · 15131 days ago · 0 km deep · 97 km away
  36. 2.57 km W of Cobb, California · 15131 days ago · 1 km deep · 96 km away
  37. 2.57 km W of Cobb, California · 15131 days ago · 1 km deep · 97 km away
  38. 1.67 km W of Cobb, California · 15131 days ago · 1 km deep · 96 km away
  39. 2.57 km W of Cobb, California · 15131 days ago · 1 km deep · 96 km away
  40. 2.014 km N of Upper Lake, California · 15131 days ago · 5 km deep · 49 km away
  41. 1.612 km NNE of Laytonville, California · 15131 days ago · 6 km deep · 24 km away
  42. 1.710 km ESE of Covelo, California · 15130 days ago · 1 km deep · 29 km away
  43. 2.322 km WSW of Williams, California · 15130 days ago · 3 km deep · 99 km away
  44. 1.57 km W of Cobb, California · 15130 days ago · 1 km deep · 96 km away
  45. 1.66 km W of Cobb, California · 15129 days ago · 3 km deep · 97 km away
  46. 1.68 km WSW of Cobb, California · 15129 days ago · 3 km deep · 98 km away
  47. 1.64 km SW of Hopland, California · 15129 days ago · 5 km deep · 72 km away
  48. 2.513 km NNE of Laytonville, California · 15129 days ago · 10 km deep · 25 km away
  49. 2.37 km WSW of Cobb, California · 15128 days ago · 4 km deep · 99 km away
  50. 1.66 km W of Cobb, California · 15128 days ago · 1 km deep · 98 km away
  51. 1.78 km SW of Weott, California · 15127 days ago · 4 km deep · 93 km away
  52. 1.78 km WSW of Cobb, California · 15127 days ago · 3 km deep · 98 km away
  53. 1.85 km NNW of Geyserville, California · 15127 days ago · 5 km deep · 99 km away
  54. 1.813 km SE of Laytonville, California · 15125 days ago · 10 km deep · 5 km away
  55. 1.97 km WSW of Cobb, California · 15125 days ago · 2 km deep · 99 km away
  56. 1.97 km WSW of Cobb, California · 15124 days ago · 1 km deep · 98 km away
  57. 2.16 km W of Cobb, California · 15124 days ago · 3 km deep · 97 km away
  58. 2.06 km W of Cobb, California · 15124 days ago · 3 km deep · 98 km away
  59. 2.28 km WSW of Cobb, California · 15123 days ago · 3 km deep · 98 km away
  60. 1.76 km NE of Brooktrails, California · 15123 days ago · 6 km deep · 11 km away

The first 60 of 181.

Before

  1. 1.75 km W of Cobb, California · 15144 days ago · 1 km deep · 97 km away
  2. 1.66 km WSW of Cobb, California · 15144 days ago · -1 km deep · 99 km away
  3. 2.15 km WSW of Cobb, California · 15144 days ago · 1 km deep · 98 km away
  4. 1.56 km WSW of Cobb, California · 15144 days ago · 0 km deep · 98 km away
  5. 1.72 km SSE of Clear Lake Riviera, California · 15145 days ago · 1 km deep · 91 km away
  6. 2.63 km SSE of Clear Lake Riviera, California · 15145 days ago · 2 km deep · 92 km away
  7. 2.09 km N of Upper Lake, California · 15145 days ago · 4 km deep · 54 km away
  8. 1.94 km W of Cobb, CA · 15145 days ago · 0 km deep · 98 km away
  9. 1.68 km W of Cobb, California · 15145 days ago · 1 km deep · 97 km away
  10. 2.27 km NNE of Elk Creek, California · 15145 days ago · 12 km deep · 74 km away
  11. 2.67 km WSW of Cobb, California · 15146 days ago · 0 km deep · 98 km away
  12. 1.97 km WSW of Cobb, California · 15146 days ago · 1 km deep · 99 km away
  13. 1.76 km W of Cobb, California · 15146 days ago · 3 km deep · 97 km away
  14. 2.18 km WSW of Cobb, California · 15146 days ago · 3 km deep · 99 km away
  15. 2.120 km WSW of Williams, California · 15146 days ago · 2 km deep · 99 km away
  16. 2.219 km WSW of Williams, California · 15146 days ago · 4 km deep · 100 km away
  17. 1.95 km W of Cobb, California · 15147 days ago · 0 km deep · 97 km away
  18. 3.15 km WSW of Cobb, California · 15148 days ago · 0 km deep · 100 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc45578. Read Tue, Sep 22, 2026, 9:31 PM UTC.