California earthquakes

M1.6 earthquake 12 km NNE of Brooktrails, California

A magnitude 1.6 earthquake struck 12 km NNE of Brooktrails, California on Wed, Jan 15, 1986, 3:18 AM PST (11:18 UTC), 4 km (3 mi) below the surface.

A larger quake followed: M1.7 6 km WSW 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
1.6 (md), micro
Local time
UTC
1986-01-15 11:18:33 UTC
Depth
4.3 km (2.7 mi), shallow
Epicenter
39.551° N, 123.346° 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 0.7 km horizontally, 8.1 km in depth
Magnitude uncertainty
±0.13
Depth from
From location
Station coverage gap
199°, poorly surrounded by stations
Stations used
4

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 178 in the 60 days after this one and 21 in the 30 days before it.

After

  1. 1.55 km SW of Cobb, California · 14860 days ago · 2 km deep · 98 km away
  2. 1.76 km WSW of Cobb, California · 14860 days ago · 3 km deep · 96 km away
  3. 2.39 km SW of Hopland, California · 14860 days ago · -1 km deep · 72 km away
  4. 2.99 km SW of Hopland, California · 14860 days ago · -1 km deep · 72 km away
  5. 1.79 km W of Cobb, California · 14859 days ago · 1 km deep · 93 km away
  6. 2.34 km WSW of Cobb, California · 14859 days ago · 1 km deep · 97 km away
  7. 2.74 km WNW of Redway, California · 14859 days ago · 21 km deep · 79 km away
  8. 1.76 km SW of Cobb, California · 14859 days ago · 0 km deep · 99 km away
  9. 2.217 km WSW of Leggett, California · 14859 days ago · 2 km deep · 56 km away
  10. 2.98 km WSW of Cobb, California · 14859 days ago · 4 km deep · 95 km away
  11. 1.86 km NW of Philo, California · 14859 days ago · 4 km deep · 52 km away
  12. 2.06 km W of Cobb, California · 14858 days ago · 3 km deep · 94 km away
  13. 1.58 km W of Cobb, California · 14858 days ago · -1 km deep · 92 km away
  14. 2.26 km SW of Cobb, California · 14858 days ago · 1 km deep · 98 km away
  15. 2.75 km SW of Cobb, California · 14858 days ago · 1 km deep · 98 km away
  16. 1.95 km SW of Cobb, California · 14858 days ago · 0 km deep · 99 km away
  17. 1.65 km W of Cobb, California · 14857 days ago · 0 km deep · 94 km away
  18. 1.74 km SW of Cobb, California · 14857 days ago · 0 km deep · 99 km away
  19. 1.620 km N of Potter Valley, California · 14857 days ago · 6 km deep · 19 km away
  20. 1.95 km SW of Cobb, California · 14857 days ago · -1 km deep · 98 km away
  21. 1.916 km NE of Miranda, California · 14856 days ago · 4 km deep · 92 km away
  22. 2.17 km W of Cobb, California · 14856 days ago · 0 km deep · 93 km away
  23. 2.99 km W of Anchor Bay, California · 14855 days ago · 4 km deep · 89 km away
  24. 2.06 km WSW of Cobb, California · 14855 days ago · 1 km deep · 95 km away
  25. 2.46 km W of Cobb, California · 14855 days ago · 3 km deep · 94 km away
  26. 2.37 km W of Cobb, California · 14854 days ago · 3 km deep · 94 km away
  27. 1.911 km N of Cloverdale, California · 14854 days ago · 3 km deep · 78 km away
  28. 1.95 km WSW of Cobb, California · 14854 days ago · -1 km deep · 97 km away
  29. 1.76 km W of Cobb, California · 14854 days ago · 2 km deep · 95 km away
  30. 2.18 km W of Cobb, California · 14854 days ago · 0 km deep · 92 km away
  31. 1.85 km SW of Cobb, California · 14853 days ago · 1 km deep · 98 km away
  32. 2.17 km WSW of Cobb, California · 14853 days ago · 3 km deep · 96 km away
  33. 2.421 km ENE of Clearlake, California · 14853 days ago · 0 km deep · 98 km away
  34. 1.87 km W of Cobb, California · 14852 days ago · 2 km deep · 94 km away
  35. 2.19 km W of Laytonville, California · 14852 days ago · 1 km deep · 27 km away
  36. 2.57 km WSW of Cobb, California · 14852 days ago · 1 km deep · 96 km away
  37. 1.76 km SW of Cobb, California · 14852 days ago · 1 km deep · 98 km away
  38. 2.02 km NW of Laytonville, California · 14852 days ago · 7 km deep · 22 km away
  39. 1.67 km W of Cobb, California · 14851 days ago · 3 km deep · 94 km away
  40. 1.77 km W of Cobb, California · 14850 days ago · 3 km deep · 94 km away
  41. 1.64 km WNW of Cobb, California · 14850 days ago · 0 km deep · 94 km away
  42. 1.67 km SW of Cloverdale, California · 14850 days ago · 28 km deep · 92 km away
  43. 1.77 km WSW of Cobb, California · 14850 days ago · 2 km deep · 96 km away
  44. 1.56 km WSW of Cobb, California · 14850 days ago · 3 km deep · 96 km away
  45. 2.17 km W of Cobb, CA · 14849 days ago · 0 km deep · 93 km away
  46. 2.07 km W of Cobb, California · 14849 days ago · -1 km deep · 93 km away
  47. 2.25 km SW of Cobb, California · 14849 days ago · 0 km deep · 99 km away
  48. 3.35 km SW of Cobb, California · 14849 days ago · 0 km deep · 98 km away
  49. 2.23 km SSW of Cobb, California · 14849 days ago · 1 km deep · 99 km away
  50. 1.91 km SSW of Redway, California · 14849 days ago · 18 km deep · 75 km away
  51. 1.66 km W of Cobb, California · 14848 days ago · 3 km deep · 94 km away
  52. 1.928 km E of Covelo, California · 14847 days ago · 4 km deep · 46 km away
  53. 1.74 km W of Cobb, California · 14846 days ago · -1 km deep · 95 km away
  54. 1.87 km WSW of Cobb, California · 14846 days ago · 0 km deep · 96 km away
  55. 1.54 km WSW of Cobb, California · 14846 days ago · 0 km deep · 97 km away
  56. 1.75 km WNW of Cobb, California · 14845 days ago · 1 km deep · 94 km away
  57. 2.52 km SE of Clear Lake Riviera, California · 14845 days ago · 2 km deep · 88 km away
  58. 2.27 km WSW of Cobb, California · 14845 days ago · 1 km deep · 96 km away
  59. 2.57 km WSW of Cobb, California · 14844 days ago · 1 km deep · 96 km away
  60. 1.66 km WSW of Cobb, California · 14844 days ago · 1 km deep · 95 km away

The first 60 of 178.

Before

  1. 1.55 km SW of Cobb, California · 14860 days ago · 0 km deep · 98 km away
  2. 2.26 km W of Cobb, California · 14861 days ago · 3 km deep · 94 km away
  3. 1.82 km WNW of Laytonville, California · 14861 days ago · 6 km deep · 22 km away
  4. 2.72 km NW of Laytonville, California · 14861 days ago · 7 km deep · 22 km away
  5. 2.29 km WSW of Cobb, California · 14861 days ago · 1 km deep · 95 km away
  6. 1.84 km SW of Cobb, California · 14862 days ago · 0 km deep · 98 km away
  7. 1.66 km W of Cobb, California · 14862 days ago · 3 km deep · 94 km away
  8. 1.65 km W of Cobb, California · 14862 days ago · 2 km deep · 94 km away
  9. 1.67 km W of Cobb, California · 14862 days ago · 3 km deep · 94 km away
  10. 1.54 km WSW of Cobb, California · 14862 days ago · 1 km deep · 97 km away
  11. 1.710 km SSE of Laytonville, California · 14862 days ago · 7 km deep · 9 km away
  12. 1.86 km W of Cobb, California · 14863 days ago · 3 km deep · 94 km away
  13. 2.126 km W of Paskenta, California · 14863 days ago · -1 km deep · 59 km away
  14. 1.76 km W of Cobb, California · 14863 days ago · 2 km deep · 94 km away
  15. 2.66 km W of Cobb, California · 14863 days ago · 1 km deep · 95 km away
  16. 1.68 km W of Cobb, California · 14864 days ago · 4 km deep · 93 km away
  17. 2.06 km W of Cobb, California · 14864 days ago · 2 km deep · 95 km away
  18. 1.64 km WSW of Cobb, California · 14864 days ago · 1 km deep · 96 km away
  19. 1.69 km W of Cobb, California · 14864 days ago · 0 km deep · 94 km away
  20. 3.04 km WSW of Cobb, California · 14864 days ago · 1 km deep · 97 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1134819. Read Tue, Sep 22, 2026, 4:16 PM UTC.