California earthquakes

M1.5 earthquake 7 km NW of Brooktrails, California

A magnitude 1.5 earthquake struck 7 km NW of Brooktrails, California on Sat, Sep 22, 1990, 1:59 AM PDT (08:59 UTC), 5 km (3 mi) below the surface.

A larger quake followed: M3.6 6 km WNW of Covelo, 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
1.5 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
1990-09-22 08:59:48 UTC
Depth
4.7 km (2.9 mi), shallow
Epicenter
39.484° N, 123.456° 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 4.4 km horizontally, 4.3 km in depth
Magnitude uncertainty
±0.18
Depth from
From location
Station coverage gap
198°, 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: 147 in the 60 days after this one and 71 in the 30 days before it.

After

  1. 1.99 km W of Cobb, California · 13160 days ago · 0 km deep · 91 km away
  2. 1.63 km W of Cobb, California · 13160 days ago · 1 km deep · 95 km away
  3. 3.66 km WNW of Covelo, California · 13160 days ago · 4 km deep · 37 km away
  4. 2.06 km W of Covelo, California · 13160 days ago · 2 km deep · 37 km away
  5. 1.55 km W of Covelo, California · 13160 days ago · 1 km deep · 37 km away
  6. 1.66 km W of Covelo, California · 13160 days ago · 1 km deep · 37 km away
  7. 1.64 km NNW of Laytonville, California · 13160 days ago · 9 km deep · 28 km away
  8. 1.810 km W of Cobb, California · 13158 days ago · 0 km deep · 91 km away
  9. 1.87 km WSW of Cobb, California · 13158 days ago · 3 km deep · 93 km away
  10. 2.510 km W of Cobb, California · 13157 days ago · 0 km deep · 91 km away
  11. 2.39 km W of Cobb, California · 13157 days ago · 0 km deep · 91 km away
  12. 1.75 km WSW of Cobb, California · 13156 days ago · 0 km deep · 96 km away
  13. 2.53 km NE of Myers Flat, California · 13156 days ago · 28 km deep · 95 km away
  14. 2.26 km W of Cobb, California · 13156 days ago · 3 km deep · 92 km away
  15. 1.93 km SSE of Calpella, California · 13156 days ago · 0 km deep · 38 km away
  16. 2.37 km SW of Cobb, California · 13156 days ago · 0 km deep · 99 km away
  17. 1.913 km SE of Covelo, California · 13156 days ago · 0 km deep · 38 km away
  18. 1.77 km WSW of Cobb, California · 13155 days ago · 2 km deep · 95 km away
  19. 1.69 km WNW of Cobb, California · 13155 days ago · 2 km deep · 90 km away
  20. 1.710 km NW of Redwood Valley, California · 13154 days ago · 0 km deep · 22 km away
  21. 2.25 km WSW of Cobb, California · 13154 days ago · 3 km deep · 96 km away
  22. 1.7near the coast of Northern California · 13153 days ago · 1 km deep · 60 km away
  23. 1.913 km WNW of Artois, California · 13153 days ago · 5 km deep · 98 km away
  24. 1.68 km W of Cobb, California · 13153 days ago · 3 km deep · 93 km away
  25. 2.76 km WNW of Cobb, California · 13152 days ago · -1 km deep · 92 km away
  26. 1.69 km W of Cobb, California · 13152 days ago · -1 km deep · 92 km away
  27. 1.75 km SSW of Cobb, California · 13152 days ago · 0 km deep · 100 km away
  28. 2.022 km NE of Potter Valley, California · 13152 days ago · 6 km deep · 43 km away
  29. 1.65 km WSW of Cobb, California · 13151 days ago · 1 km deep · 95 km away
  30. 1.510 km W of Cobb, California · 13151 days ago · 0 km deep · 92 km away
  31. 1.55 km WNW of Cobb, California · 13151 days ago · 0 km deep · 92 km away
  32. 2.16 km W of Laytonville, California · 13151 days ago · 3 km deep · 25 km away
  33. 1.94 km WSW of Cobb, California · 13150 days ago · 0 km deep · 96 km away
  34. 2.03 km ESE of Benbow, California · 13150 days ago · 16 km deep · 69 km away
  35. 1.94 km SW of Cobb, California · 13149 days ago · 0 km deep · 98 km away
  36. 1.55 km W of Covelo, California · 13148 days ago · 4 km deep · 37 km away
  37. 1.66 km W of Cobb, California · 13147 days ago · -1 km deep · 93 km away
  38. 2.29 km W of Cobb, California · 13147 days ago · 0 km deep · 91 km away
  39. 1.79 km W of Cobb, California · 13147 days ago · 0 km deep · 91 km away
  40. 2.25 km WSW of Cobb, California · 13146 days ago · -1 km deep · 96 km away
  41. 1.66 km SW of Cobb, California · 13146 days ago · 0 km deep · 99 km away
  42. 1.812 km N of Brooktrails, California · 13146 days ago · 10 km deep · 11 km away
  43. 2.312 km N of Brooktrails, California · 13144 days ago · 9 km deep · 11 km away
  44. 1.85 km W of Cobb, California · 13144 days ago · 0 km deep · 94 km away
  45. 1.512 km N of Brooktrails, California · 13143 days ago · 8 km deep · 11 km away
  46. 1.97 km W of Cobb, California · 13143 days ago · 3 km deep · 93 km away
  47. 3.47 km WSW of Cobb, California · 13143 days ago · 3 km deep · 95 km away
  48. 1.58 km W of Cobb, California · 13143 days ago · 1 km deep · 92 km away
  49. 1.68 km W of Cobb, California · 13143 days ago · 0 km deep · 91 km away
  50. 2.48 km W of Cobb, California · 13143 days ago · -1 km deep · 92 km away
  51. 1.87 km WSW of Cobb, California · 13143 days ago · 3 km deep · 94 km away
  52. 2.44 km W of Cobb, California · 13143 days ago · 2 km deep · 94 km away
  53. 1.94 km W of Cobb, California · 13143 days ago · 2 km deep · 94 km away
  54. 1.76 km ENE of Cloverdale, California · 13142 days ago · 2 km deep · 84 km away
  55. 2.410 km W of Cobb, California · 13142 days ago · 0 km deep · 91 km away
  56. 1.710 km W of Cobb, California · 13142 days ago · 0 km deep · 91 km away
  57. 2.23 km W of Cobb, California · 13142 days ago · 0 km deep · 95 km away
  58. 1.93 km NNE of Cloverdale, California · 13141 days ago · 3 km deep · 82 km away
  59. 1.77 km W of Cobb, California · 13141 days ago · 3 km deep · 93 km away
  60. 1.812 km NE of Cleone, California · 13139 days ago · 4 km deep · 22 km away

The first 60 of 147.

Before

  1. 2.47 km W of Cobb, California · 13162 days ago · 0 km deep · 93 km away
  2. 2.97 km WSW of Cobb, California · 13162 days ago · 1 km deep · 94 km away
  3. 1.87 km WSW of Cobb, California · 13162 days ago · 1 km deep · 94 km away
  4. 1.67 km WSW of Cobb, California · 13162 days ago · 0 km deep · 94 km away
  5. 1.97 km WSW of Cobb, California · 13162 days ago · 1 km deep · 94 km away
  6. 3.37 km WSW of Cobb, California · 13162 days ago · 0 km deep · 94 km away
  7. 1.88 km W of Cobb, California · 13162 days ago · -1 km deep · 91 km away
  8. 1.710 km NW of Cobb, California · 13163 days ago · 0 km deep · 87 km away
  9. 1.85 km W of Cobb, California · 13163 days ago · 1 km deep · 95 km away
  10. 1.78 km W of Cobb, California · 13163 days ago · 2 km deep · 91 km away
  11. 2.59 km WNW of Cobb, California · 13164 days ago · 2 km deep · 90 km away
  12. 3.45 km SW of Cobb, California · 13164 days ago · 0 km deep · 97 km away
  13. 2.76 km SW of Paskenta, California · 13165 days ago · 13 km deep · 83 km away
  14. 2.310 km WSW of Manchester, California · 13167 days ago · 1 km deep · 67 km away
  15. 1.96 km ESE of Hopland, California · 13167 days ago · 0 km deep · 70 km away
  16. 1.98 km NE of Brooktrails, California · 13168 days ago · 7 km deep · 13 km away
  17. 1.69 km W of Cobb, California · 13168 days ago · 1 km deep · 91 km away
  18. 1.56 km ESE of Hopland, California · 13168 days ago · 4 km deep · 70 km away
  19. 1.64 km W of Cobb, California · 13168 days ago · 0 km deep · 95 km away
  20. 1.64 km W of Cobb, California · 13168 days ago · 0 km deep · 95 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1180299. Read Sun, Oct 4, 2026, 8:50 AM UTC.