California earthquakes

M1.6 earthquake 17 km WNW of Brooktrails, California

A magnitude 1.6 earthquake struck 17 km WNW of Brooktrails, California on Thu, Mar 7, 1985, 12:11 PM PST (20:11 UTC), 1 km (1 mi) below the surface.

A larger quake followed: M4.1 11 km NNE of Cloverdale, 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, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
1985-03-07 20:11:19 UTC
Depth
1.1 km (0.7 mi), shallow
Epicenter
39.475° N, 123.582° 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 0.6 km horizontally, 4.6 km in depth
Magnitude uncertainty
±0.14
Depth from
From location
Station coverage gap
172°
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: 125 in the 60 days after this one and 103 in the 30 days before it.

After

  1. 2.17 km WSW of Cobb, California · 15183 days ago · 0 km deep · 100 km away
  2. 2.56 km W of Cobb, California · 15183 days ago · 3 km deep · 99 km away
  3. 2.05 km W of Cobb, California · 15182 days ago · 1 km deep · 100 km away
  4. 1.55 km W of Cobb, California · 15182 days ago · 0 km deep · 100 km away
  5. 2.37 km W of Cobb, California · 15181 days ago · 0 km deep · 98 km away
  6. 1.911 km NNE of Comptche, California · 15181 days ago · 2 km deep · 13 km away
  7. 1.92 km SSE of Clear Lake Riviera, California · 15181 days ago · 1 km deep · 96 km away
  8. 2.02 km SSE of Clear Lake Riviera, California · 15181 days ago · 0 km deep · 96 km away
  9. 1.63 km E of Clear Lake Riviera, California · 15180 days ago · 0 km deep · 97 km away
  10. 1.711 km SE of Hopland, California · 15180 days ago · 2 km deep · 80 km away
  11. 1.57 km W of Cobb, California · 15180 days ago · 0 km deep · 99 km away
  12. 2.57 km W of Cobb, California · 15179 days ago · 2 km deep · 99 km away
  13. 1.59 km WSW of Cobb, California · 15178 days ago · 1 km deep · 99 km away
  14. 2.010 km SSE of Leggett, California · 15178 days ago · 6 km deep · 34 km away
  15. 2.411 km NW of Ruth, California · 15177 days ago · 29 km deep · 98 km away
  16. 1.56 km W of Cobb, California · 15176 days ago · 4 km deep · 100 km away
  17. 1.86 km WSW of Clear Lake Riviera, California · 15175 days ago · 6 km deep · 92 km away
  18. 4.111 km NNE of Cloverdale, California · 15175 days ago · 13 km deep · 85 km away
  19. 3.020 km NNE of Upper Lake, California · 15175 days ago · 10 km deep · 69 km away
  20. 2.56 km W of Cobb, California · 15174 days ago · 1 km deep · 99 km away
  21. 1.87 km W of Cobb, California · 15174 days ago · 2 km deep · 98 km away
  22. 2.07 km WSW of Cobb, California · 15173 days ago · 0 km deep · 100 km away
  23. 1.56 km W of Cobb, California · 15173 days ago · 1 km deep · 100 km away
  24. 2.06 km W of Cobb, California · 15173 days ago · 2 km deep · 100 km away
  25. 1.827 km WSW of Leggett, California · 15172 days ago · 2 km deep · 46 km away
  26. 1.76 km W of Cobb, California · 15171 days ago · 3 km deep · 99 km away
  27. 1.97 km W of Cobb, California · 15171 days ago · 1 km deep · 100 km away
  28. 2.75 km W of Cobb, California · 15170 days ago · 3 km deep · 100 km away
  29. 2.09 km W of Cobb, California · 15170 days ago · 2 km deep · 98 km away
  30. 1.65 km W of Cobb, California · 15170 days ago · -1 km deep · 100 km away
  31. 1.54 km N of Laytonville, California · 15170 days ago · 11 km deep · 29 km away
  32. 1.87 km WSW of Cobb, California · 15169 days ago · 1 km deep · 100 km away
  33. 1.819 km NNE of Upper Lake, California · 15169 days ago · 0 km deep · 67 km away
  34. 3.04 km W of Cobb, California · 15169 days ago · -1 km deep · 100 km away
  35. 1.924 km W of Paskenta, California · 15169 days ago · -1 km deep · 82 km away
  36. 1.68 km W of Cobb, California · 15169 days ago · 0 km deep · 98 km away
  37. 3.15 km WSW of Laytonville, California · 15168 days ago · 2 km deep · 22 km away
  38. 1.912 km NW of Upper Lake, California · 15168 days ago · 5 km deep · 55 km away
  39. 3.27 km NNE of Hopland, California · 15168 days ago · 2 km deep · 65 km away
  40. 1.96 km W of Cobb, California · 15168 days ago · 3 km deep · 99 km away
  41. 1.621 km S of Ruth, California · 15163 days ago · 6 km deep · 72 km away
  42. 2.322 km S of Ruth, California · 15163 days ago · 8 km deep · 69 km away
  43. 1.66 km W of Cobb, California · 15163 days ago · 3 km deep · 100 km away
  44. 2.97 km W of Cobb, California · 15163 days ago · 1 km deep · 99 km away
  45. 1.6Northern California · 15163 days ago · 1 km deep · 100 km away
  46. 1.88 km W of Cobb, California · 15163 days ago · 0 km deep · 98 km away
  47. 1.64 km NNE of Clearlake, California · 15162 days ago · 0 km deep · 100 km away
  48. 1.97 km W of Cobb, California · 15162 days ago · 3 km deep · 100 km away
  49. 1.815 km N of Shelter Cove, California · 15162 days ago · 23 km deep · 89 km away
  50. 1.62 km SSE of Clear Lake Riviera, California · 15162 days ago · 3 km deep · 97 km away
  51. 3.37 km W of Cobb, California · 15161 days ago · 4 km deep · 99 km away
  52. 1.67 km W of Cobb, California · 15161 days ago · 3 km deep · 99 km away
  53. 1.75 km W of Cobb, California · 15160 days ago · 0 km deep · 100 km away
  54. 1.67 km W of Cobb, California · 15160 days ago · 3 km deep · 99 km away
  55. 1.78 km W of Cobb, California · 15160 days ago · 1 km deep · 98 km away
  56. 1.72 km ESE of Garberville, California · 15159 days ago · 20 km deep · 70 km away
  57. 1.56 km ESE of Hopland, California · 15159 days ago · 1 km deep · 74 km away
  58. 1.96 km WNW of Covelo, California · 15159 days ago · 6 km deep · 43 km away
  59. 1.95 km W of Cobb, California · 15157 days ago · 0 km deep · 99 km away
  60. 1.76 km W of Cobb, California · 15156 days ago · 3 km deep · 99 km away

The first 60 of 125.

Before

  1. 3.28 km W of Cobb, California · 15184 days ago · 0 km deep · 99 km away
  2. 1.610 km W of Cobb, California · 15184 days ago · 8 km deep · 95 km away
  3. 2.15 km WSW of Clear Lake Riviera, California · 15184 days ago · 4 km deep · 92 km away
  4. 1.66 km SSE of Kelseyville, California · 15185 days ago · 4 km deep · 91 km away
  5. 1.84 km ESE of Clear Lake Riviera, California · 15185 days ago · 5 km deep · 99 km away
  6. 2.52 km SSE of Clear Lake Riviera, California · 15185 days ago · 0 km deep · 96 km away
  7. 1.83 km ESE of Clear Lake Riviera, California · 15185 days ago · -1 km deep · 97 km away
  8. 1.6Northern California · 15185 days ago · 3 km deep · 97 km away
  9. 1.86 km W of Cobb, California · 15185 days ago · 2 km deep · 100 km away
  10. 1.812 km ENE of Sea Ranch, California · 15185 days ago · 4 km deep · 82 km away
  11. 2.02 km SE of Clear Lake Riviera, California · 15185 days ago · 2 km deep · 97 km away
  12. 1.52 km SSE of Clear Lake Riviera, California · 15185 days ago · 3 km deep · 96 km away
  13. 1.62 km SE of Clear Lake Riviera, California · 15185 days ago · 4 km deep · 97 km away
  14. 1.52 km SSE of Clear Lake Riviera, California · 15185 days ago · 2 km deep · 96 km away
  15. 2.13 km SSE of Clear Lake Riviera, California · 15185 days ago · 3 km deep · 97 km away
  16. 1.63 km ESE of Clear Lake Riviera, California · 15185 days ago · 2 km deep · 98 km away
  17. 2.53 km S of Clear Lake Riviera, California · 15185 days ago · 0 km deep · 96 km away
  18. 2.83 km SSE of Clear Lake Riviera, California · 15185 days ago · 2 km deep · 97 km away
  19. 2.83 km SSE of Clear Lake Riviera, California · 15185 days ago · 2 km deep · 97 km away
  20. 2.02 km SSE of Clear Lake Riviera, California · 15185 days ago · 2 km deep · 97 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc43223. Read Fri, Oct 2, 2026, 1:17 PM UTC.