California earthquakes

M1.9 earthquake 10 km NNE of Brooktrails, California

A magnitude 1.9 earthquake struck 10 km NNE of Brooktrails, California on Thu, Dec 26, 1985, 2:22 AM PST (10:22 UTC), 8 km (5 mi) below the surface.

A larger quake followed: M3.6 8 km WSW of Kelseyville, 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.

Open the live map with earthquakes

The earthquake

Magnitude
1.9 (md), micro
Local time
UTC
1985-12-26 10:22:27 UTC
Depth
8.0 km (5.0 mi), shallow
Epicenter
39.534° N, 123.337° 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, 0.5 km in depth
Magnitude uncertainty
±0.17
Depth from
From location
Station coverage gap
84°
Stations used
17

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: at least 199 in the 60 days after this one and 121 in the 30 days before it.

After

  1. 1.56 km W of Cobb, California · 14886 days ago · 3 km deep · 92 km away
  2. 1.84 km WSW of Cobb, California · 14886 days ago · 1 km deep · 95 km away
  3. 1.55 km WSW of Cobb, California · 14886 days ago · 0 km deep · 95 km away
  4. 1.64 km SSW of Hopland, California · 14885 days ago · 6 km deep · 68 km away
  5. 2.14 km SSW of Hopland, California · 14885 days ago · 6 km deep · 68 km away
  6. 2.09 km WSW of Cobb, California · 14885 days ago · 2 km deep · 93 km away
  7. 1.75 km W of Cobb, California · 14885 days ago · 1 km deep · 92 km away
  8. 2.35 km SW of Cobb, California · 14885 days ago · 0 km deep · 97 km away
  9. 1.57 km WSW of Cobb, California · 14885 days ago · 2 km deep · 93 km away
  10. 2.34 km W of Cobb, California · 14884 days ago · 0 km deep · 93 km away
  11. 1.94 km W of Cobb, California · 14884 days ago · 1 km deep · 93 km away
  12. 1.64 km W of Cobb, California · 14884 days ago · -1 km deep · 93 km away
  13. 2.65 km SW of Cobb, California · 14884 days ago · 0 km deep · 96 km away
  14. 1.55 km SW of Cobb, California · 14884 days ago · 0 km deep · 96 km away
  15. 1.66 km WNW of Cobb, California · 14883 days ago · 1 km deep · 91 km away
  16. 1.57 km W of Cobb, California · 14883 days ago · 2 km deep · 90 km away
  17. 1.65 km SW of Cobb, California · 14882 days ago · 0 km deep · 96 km away
  18. 1.64 km S of Cobb, California · 14882 days ago · 1 km deep · 99 km away
  19. 1.64 km S of Cobb, California · 14882 days ago · 2 km deep · 99 km away
  20. 2.10 km SE of Redwood Valley, California · 14882 days ago · 5 km deep · 32 km away
  21. 1.95 km W of Cobb, California · 14882 days ago · 1 km deep · 92 km away
  22. 2.38 km W of Cobb, California · 14882 days ago · 1 km deep · 90 km away
  23. 1.67 km WSW of Cobb, California · 14881 days ago · 3 km deep · 93 km away
  24. 2.06 km W of Cobb, California · 14881 days ago · 3 km deep · 92 km away
  25. 1.75 km WSW of Cobb, California · 14881 days ago · 0 km deep · 95 km away
  26. 1.66 km W of Cobb, California · 14881 days ago · 1 km deep · 91 km away
  27. 2.35 km SW of Cobb, California · 14880 days ago · 1 km deep · 96 km away
  28. 2.74 km WSW of Cobb, California · 14880 days ago · 1 km deep · 95 km away
  29. 2.45 km WSW of Cobb, California · 14880 days ago · 1 km deep · 94 km away
  30. 2.04 km SSW of Cobb, California · 14880 days ago · 0 km deep · 99 km away
  31. 1.65 km WNW of Cobb, California · 14879 days ago · 2 km deep · 91 km away
  32. 2.07 km W of Cobb, California · 14879 days ago · 3 km deep · 92 km away
  33. 2.06 km W of Cobb, California · 14878 days ago · 3 km deep · 92 km away
  34. 2.96 km W of Cobb, California · 14878 days ago · 0 km deep · 91 km away
  35. 2.46 km W of Cobb, California · 14878 days ago · 1 km deep · 92 km away
  36. 2.35 km SW of Cobb, California · 14877 days ago · 1 km deep · 96 km away
  37. 2.98 km WSW of Cobb, California · 14877 days ago · 0 km deep · 93 km away
  38. 1.68 km WSW of Cobb, California · 14877 days ago · 0 km deep · 93 km away
  39. 2.06 km WSW of Cobb, California · 14877 days ago · 0 km deep · 94 km away
  40. 1.75 km SW of Cobb, California · 14877 days ago · 0 km deep · 96 km away
  41. 2.010 km NNE of Hopland, California · 14876 days ago · 6 km deep · 58 km away
  42. 1.66 km W of Cobb, California · 14875 days ago · 3 km deep · 92 km away
  43. 2.16 km SW of Cobb, California · 14873 days ago · -1 km deep · 96 km away
  44. 1.716 km NNE of Upper Lake, California · 14873 days ago · 6 km deep · 51 km away
  45. 2.18 km ENE of Lower Lake, California · 14873 days ago · 0 km deep · 97 km away
  46. 1.919 km ENE of Potter Valley, California · 14873 days ago · 6 km deep · 40 km away
  47. 1.625 km SE of Covelo, California · 14873 days ago · 4 km deep · 24 km away
  48. 1.74 km NW of Redwood Valley, California · 14873 days ago · 5 km deep · 28 km away
  49. 1.71 km E of Calpella, California · 14873 days ago · 6 km deep · 36 km away
  50. 1.815 km NE of Miranda, California · 14873 days ago · 19 km deep · 96 km away
  51. 3.68 km WSW of Kelseyville, California · 14872 days ago · 4 km deep · 76 km away
  52. 1.58 km WNW of Cobb, California · 14872 days ago · 6 km deep · 89 km away
  53. 1.94 km NW of Redwood Valley, California · 14871 days ago · -1 km deep · 28 km away
  54. 2.55 km SW of Cobb, California · 14870 days ago · 0 km deep · 97 km away
  55. 1.64 km WSW of Cobb, California · 14870 days ago · 1 km deep · 95 km away
  56. 3.04 km WSW of Cobb, California · 14870 days ago · 1 km deep · 95 km away
  57. 1.69 km W of Cobb, California · 14870 days ago · 0 km deep · 92 km away
  58. 1.64 km WSW of Cobb, California · 14870 days ago · 1 km deep · 94 km away
  59. 2.06 km W of Cobb, California · 14870 days ago · 2 km deep · 93 km away
  60. 1.68 km W of Cobb, California · 14870 days ago · 4 km deep · 91 km away

The first 60 of at least 199.

Before

  1. 1.84 km SSW of Hopland, California · 14887 days ago · 6 km deep · 68 km away
  2. 1.97 km W of Cobb, California · 14887 days ago · 1 km deep · 91 km away
  3. 1.85 km W of Cobb, California · 14887 days ago · -1 km deep · 93 km away
  4. 1.77 km WSW of Cobb, California · 14887 days ago · 1 km deep · 93 km away
  5. 1.56 km W of Cobb, California · 14887 days ago · 3 km deep · 92 km away
  6. 1.722 km ENE of Potter Valley, California · 14888 days ago · 10 km deep · 43 km away
  7. 2.526 km W of Paskenta, California · 14889 days ago · -1 km deep · 60 km away
  8. 1.77 km WSW of Cobb, California · 14890 days ago · 0 km deep · 93 km away
  9. 1.56 km W of Cobb, California · 14890 days ago · 1 km deep · 91 km away
  10. 1.57 km W of Cobb, California · 14890 days ago · 3 km deep · 92 km away
  11. 1.65 km W of Cobb, California · 14890 days ago · 1 km deep · 93 km away
  12. 1.94 km WNW of Cobb, California · 14890 days ago · 0 km deep · 92 km away
  13. 2.17 km WSW of Cobb, California · 14890 days ago · 1 km deep · 93 km away
  14. 1.78 km W of Cobb, California · 14890 days ago · 1 km deep · 91 km away
  15. 2.57 km W of Cobb, California · 14891 days ago · 1 km deep · 92 km away
  16. 1.78 km W of Cobb, California · 14891 days ago · 0 km deep · 91 km away
  17. 1.76 km W of Cobb, California · 14892 days ago · 1 km deep · 91 km away
  18. 1.57 km W of Cobb, California · 14893 days ago · 3 km deep · 93 km away
  19. 1.68 km WSW of Cobb, California · 14893 days ago · 0 km deep · 93 km away
  20. 2.39 km WSW of Cobb, California · 14893 days ago · 1 km deep · 92 km away

Earthquakes todayCalifornia earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc63474. Read Mon, Sep 28, 2026, 12:51 PM UTC.