California earthquakes

M1.9 earthquake 11 km N of Brooktrails, California

A magnitude 1.9 earthquake struck 11 km N of Brooktrails, California on Fri, Mar 18, 1983, 11:00 AM PST (19:00 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M3.6 3 km E of Talmage, 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
1.9 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
1983-03-18 19:00:53 UTC
Depth
9.6 km (6.0 mi), shallow
Epicenter
39.551° N, 123.373° 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 0.4 km horizontally, 1.2 km in depth
Magnitude uncertainty
±0.28
Depth from
From location
Station coverage gap
103°
Stations used
10

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 129 in the 60 days after this one and 77 in the 30 days before it.

After

  1. 1.87 km WSW of Cobb, California · 15904 days ago · 1 km deep · 96 km away
  2. 1.77 km NNE of Nice, California · 15904 days ago · 19 km deep · 62 km away
  3. 2.319 km ENE of Potter Valley, California · 15904 days ago · 12 km deep · 44 km away
  4. 2.12 km ENE of Garberville, California · 15903 days ago · 19 km deep · 71 km away
  5. 1.76 km W of Cobb, California · 15903 days ago · 0 km deep · 96 km away
  6. 2.424 km NE of Potter Valley, California · 15903 days ago · 10 km deep · 37 km away
  7. 1.55 km SSW of Kelseyville, California · 15903 days ago · -1 km deep · 82 km away
  8. 1.912 km SSE of Laytonville, California · 15902 days ago · 7 km deep · 7 km away
  9. 1.66 km W of Cobb, California · 15901 days ago · 1 km deep · 96 km away
  10. 2.610 km ENE of Ruth, California · 15900 days ago · 36 km deep · 86 km away
  11. 2.011 km NE of Ruth, California · 15900 days ago · 16 km deep · 89 km away
  12. 2.816 km NE of Upper Lake, California · 15900 days ago · 5 km deep · 60 km away
  13. 2.014 km W of Laytonville, California · 15900 days ago · -1 km deep · 28 km away
  14. 2.024 km NE of Potter Valley, California · 15900 days ago · 11 km deep · 37 km away
  15. 1.93 km ENE of Covelo, California · 15900 days ago · 10 km deep · 32 km away
  16. 2.69 km WSW of Cobb, California · 15900 days ago · 2 km deep · 96 km away
  17. 2.58 km WSW of Cobb, California · 15900 days ago · 1 km deep · 96 km away
  18. 2.16 km W of Cobb, California · 15899 days ago · 3 km deep · 95 km away
  19. 3.06 km WSW of Cobb, California · 15899 days ago · 3 km deep · 97 km away
  20. 2.0Northern California · 15898 days ago · 2 km deep · 96 km away
  21. 2.011 km SSW of Benbow, California · 15897 days ago · 6 km deep · 61 km away
  22. 1.75 km E of Calpella, California · 15897 days ago · 2 km deep · 40 km away
  23. 1.56 km W of Cobb, California · 15897 days ago · 1 km deep · 96 km away
  24. 1.66 km WSW of Cobb, California · 15896 days ago · 1 km deep · 98 km away
  25. 2.18 km WSW of Cobb, California · 15896 days ago · 7 km deep · 97 km away
  26. 1.67 km WSW of Cobb, California · 15896 days ago · 2 km deep · 96 km away
  27. 2.07 km W of Cobb, California · 15896 days ago · 3 km deep · 95 km away
  28. 1.57 km W of Cobb, California · 15895 days ago · 3 km deep · 95 km away
  29. 2.42 km SSE of Comptche, California · 15895 days ago · 10 km deep · 38 km away
  30. 1.67 km WSW of Cobb, California · 15894 days ago · 1 km deep · 98 km away
  31. 1.819 km SW of Cloverdale, California · 15894 days ago · -1 km deep · 96 km away
  32. 1.97 km W of Cobb, California · 15889 days ago · 3 km deep · 95 km away
  33. 3.126 km W of Paskenta, California · 15889 days ago · -1 km deep · 61 km away
  34. 1.66 km W of Cobb, California · 15889 days ago · 1 km deep · 95 km away
  35. 1.57 km W of Cobb, California · 15888 days ago · -1 km deep · 96 km away
  36. 2.97 km NW of Redwood Valley, California · 15888 days ago · 0 km deep · 28 km away
  37. 2.47 km W of Cobb, California · 15888 days ago · 3 km deep · 95 km away
  38. 1.87 km WSW of Cobb, California · 15887 days ago · 2 km deep · 97 km away
  39. 1.96 km W of Cobb, California · 15887 days ago · 1 km deep · 96 km away
  40. 1.59 km WSW of Cobb, California · 15887 days ago · 3 km deep · 95 km away
  41. 1.64 km W of Cobb, California · 15886 days ago · 0 km deep · 96 km away
  42. 1.77 km W of Cobb, California · 15886 days ago · 3 km deep · 95 km away
  43. 1.57 km W of Cobb, California · 15885 days ago · 3 km deep · 95 km away
  44. 1.86 km W of Cobb, California · 15885 days ago · 3 km deep · 95 km away
  45. 1.77 km W of Cobb, California · 15885 days ago · 1 km deep · 94 km away
  46. 2.811 km SE of Laytonville, California · 15885 days ago · 8 km deep · 6 km away
  47. 2.05 km SW of Cobb, California · 15885 days ago · 0 km deep · 99 km away
  48. 3.63 km E of Talmage, California · 15885 days ago · 7 km deep · 50 km away
  49. 1.92 km ENE of Talmage, California · 15885 days ago · 4 km deep · 50 km away
  50. 1.66 km W of Cobb, California · 15885 days ago · 3 km deep · 96 km away
  51. 2.427 km N of Potter Valley, California · 15884 days ago · 3 km deep · 27 km away
  52. 2.56 km W of Cobb, California · 15884 days ago · 3 km deep · 95 km away
  53. 2.25 km W of Cobb, California · 15882 days ago · -1 km deep · 96 km away
  54. 2.16 km W of Cobb, California · 15881 days ago · 3 km deep · 95 km away
  55. 1.68 km WSW of Cobb, California · 15881 days ago · 3 km deep · 96 km away
  56. 2.27 km W of Cobb, California · 15881 days ago · 0 km deep · 96 km away
  57. 1.510 km SE of Laytonville, California · 15881 days ago · 8 km deep · 7 km away
  58. 2.46 km W of Cobb, California · 15880 days ago · 3 km deep · 96 km away
  59. 2.06 km W of Cobb, California · 15880 days ago · 3 km deep · 95 km away
  60. 2.56 km W of Cobb, California · 15879 days ago · 2 km deep · 96 km away

The first 60 of 129.

Before

  1. 1.66 km WSW of Cobb, California · 15904 days ago · 3 km deep · 97 km away
  2. 2.57 km WSW of Cobb, California · 15905 days ago · 1 km deep · 96 km away
  3. 2.23 km N of Redwood Valley, California · 15905 days ago · 6 km deep · 32 km away
  4. 2.17 km WSW of Cobb, California · 15905 days ago · 1 km deep · 97 km away
  5. 1.66 km WSW of Cobb, California · 15905 days ago · 3 km deep · 96 km away
  6. 3.06 km WSW of Cobb, California · 15905 days ago · 3 km deep · 97 km away
  7. 1.68 km WSW of Cobb, California · 15905 days ago · 3 km deep · 96 km away
  8. 2.16 km W of Cobb, California · 15906 days ago · 3 km deep · 95 km away
  9. 1.818 km ENE of Potter Valley, California · 15906 days ago · 11 km deep · 42 km away
  10. 1.72 km SSE of Talmage, California · 15907 days ago · -1 km deep · 52 km away
  11. 2.08 km WSW of Cobb, California · 15908 days ago · 3 km deep · 97 km away
  12. 2.87 km WSW of Cobb, California · 15908 days ago · 0 km deep · 96 km away
  13. 2.024 km SSE of Covelo, California · 15910 days ago · 6 km deep · 25 km away
  14. 1.67 km SE of Willits, California · 15910 days ago · 2 km deep · 23 km away
  15. 2.07 km W of Cobb, California · 15910 days ago · 3 km deep · 95 km away
  16. 2.012 km SSW of Laytonville, California · 15910 days ago · -1 km deep · 13 km away
  17. 2.56 km WSW of Cobb, California · 15910 days ago · 3 km deep · 96 km away
  18. 2.213 km SSW of Laytonville, California · 15910 days ago · 3 km deep · 13 km away
  19. 1.87 km WSW of Cobb, California · 15910 days ago · 1 km deep · 96 km away
  20. 3.06 km W of Cobb, California · 15910 days ago · 3 km deep · 95 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1089327. Read Sat, Oct 3, 2026, 2:24 AM UTC.