California earthquakes

M1.8 earthquake 8 km NNE of Comptche, California

A magnitude 1.8 earthquake struck 8 km NNE of Comptche, California on Tue, Nov 20, 1990, 8:11 AM PST (16:11 UTC), 6 km (4 mi) below the surface.

A larger quake followed: M3.8 5 km SW of Cobb, California. This one was a foreshock.

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Map

Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude
1.8 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
1990-11-20 16:11:49 UTC
Depth
5.9 km (3.7 mi), shallow
Epicenter
39.336° N, 123.566° 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 0.5 km horizontally, 3.2 km in depth
Magnitude uncertainty
±0.21
Depth from
From location
Station coverage gap
158°
Stations used
6

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 185 in the 60 days after this one and 69 in the 30 days before it.

After

  1. 1.64 km WSW of Cobb, California · 13102 days ago · 1 km deep · 90 km away
  2. 2.111 km SSE of Boonville, California · 13102 days ago · 4 km deep · 52 km away
  3. 1.74 km SW of Cobb, California · 13102 days ago · -1 km deep · 92 km away
  4. 2.47 km W of Cobb, California · 13101 days ago · 0 km deep · 87 km away
  5. 1.916 km N of Upper Lake, California · 13101 days ago · 6 km deep · 58 km away
  6. 1.7near the coast of Northern California · 13101 days ago · 0 km deep · 56 km away
  7. 2.13 km SE of Benbow, California · 13100 days ago · 18 km deep · 81 km away
  8. 1.6Northern California · 13100 days ago · 18 km deep · 81 km away
  9. 2.04 km SE of Benbow, California · 13100 days ago · 17 km deep · 81 km away
  10. 3.14 km SSE of Benbow, California · 13100 days ago · 15 km deep · 80 km away
  11. 1.68 km ESE of Benbow, California · 13100 days ago · 5 km deep · 79 km away
  12. 2.84 km SSE of Benbow, California · 13100 days ago · 15 km deep · 80 km away
  13. 2.23 km SE of Benbow, California · 13100 days ago · 17 km deep · 80 km away
  14. 1.57 km W of Cobb, California · 13099 days ago · 3 km deep · 88 km away
  15. 2.04 km WSW of Cobb, California · 13099 days ago · 1 km deep · 91 km away
  16. 1.74 km NNE of Brooktrails, California · 13099 days ago · 4 km deep · 24 km away
  17. 2.06 km W of Cobb, California · 13099 days ago · 2 km deep · 88 km away
  18. 1.85 km SSW of Cobb, California · 13098 days ago · 1 km deep · 94 km away
  19. 2.26 km WSW of Cobb, California · 13098 days ago · 1 km deep · 88 km away
  20. 1.712 km SE of Leggett, California · 13098 days ago · 6 km deep · 50 km away
  21. 2.05 km WSW of Cobb, California · 13098 days ago · 0 km deep · 91 km away
  22. 1.85 km SSW of Cobb, California · 13098 days ago · 0 km deep · 93 km away
  23. 2.19 km W of Cobb, California · 13098 days ago · 1 km deep · 85 km away
  24. 1.83 km SE of Benbow, California · 13098 days ago · 18 km deep · 81 km away
  25. 3.04 km SSE of Benbow, California · 13098 days ago · 15 km deep · 79 km away
  26. 1.96 km S of Cobb, California · 13097 days ago · 1 km deep · 96 km away
  27. 1.57 km ESE of Willits, California · 13097 days ago · 7 km deep · 25 km away
  28. 1.82 km E of Benbow, California · 13097 days ago · 19 km deep · 83 km away
  29. 1.74 km SSW of Benbow, California · 13097 days ago · 19 km deep · 80 km away
  30. 2.513 km W of Cobb, California · 13097 days ago · 2 km deep · 81 km away
  31. 2.05 km WSW of Cobb, California · 13097 days ago · -1 km deep · 91 km away
  32. 1.67 km W of Cobb, California · 13097 days ago · 3 km deep · 87 km away
  33. 3.1Northern California · 13096 days ago · 1 km deep · 92 km away
  34. 1.510 km W of Cobb, California · 13095 days ago · 1 km deep · 85 km away
  35. 1.612 km SSE of Laytonville, California · 13095 days ago · 4 km deep · 29 km away
  36. 1.74 km WSW of Cobb, California · 13095 days ago · 1 km deep · 91 km away
  37. 1.66 km WSW of Cobb, California · 13095 days ago · 3 km deep · 89 km away
  38. 1.64 km SW of Cobb, California · 13094 days ago · -1 km deep · 92 km away
  39. 1.53 km SSW of Cobb, California · 13094 days ago · 0 km deep · 93 km away
  40. 1.87 km ENE of Hopland, California · 13093 days ago · 6 km deep · 60 km away
  41. 1.616 km N of Upper Lake, California · 13093 days ago · 7 km deep · 58 km away
  42. 1.88 km W of Cobb, California · 13093 days ago · -1 km deep · 86 km away
  43. 1.68 km W of Cobb, California · 13093 days ago · 0 km deep · 86 km away
  44. 2.18 km W of Cobb, California · 13093 days ago · 1 km deep · 86 km away
  45. 2.28 km W of Cobb, California · 13093 days ago · 0 km deep · 86 km away
  46. 1.68 km NNE of Potter Valley, California · 13093 days ago · 1 km deep · 44 km away
  47. 1.610 km W of Redwood Valley, California · 13093 days ago · 3 km deep · 22 km away
  48. 1.55 km WSW of Cobb, California · 13093 days ago · 0 km deep · 91 km away
  49. 2.05 km W of Cobb, California · 13092 days ago · 0 km deep · 88 km away
  50. 1.73 km SSW of Cobb, California · 13091 days ago · 1 km deep · 93 km away
  51. 1.74 km SE of Benbow, California · 13090 days ago · 11 km deep · 79 km away
  52. 1.55 km WSW of Cobb, California · 13090 days ago · 4 km deep · 90 km away
  53. 1.75 km WSW of Cobb, California · 13089 days ago · 2 km deep · 91 km away
  54. 1.69 km W of Cobb, California · 13089 days ago · 1 km deep · 85 km away
  55. 1.98 km W of Cobb, California · 13088 days ago · 0 km deep · 86 km away
  56. 1.54 km SW of Cobb, California · 13088 days ago · 1 km deep · 93 km away
  57. 2.28 km W of Cobb, California · 13087 days ago · 1 km deep · 86 km away
  58. 1.65 km SW of Cobb, California · 13086 days ago · -1 km deep · 93 km away
  59. 1.67 km WSW of Cobb, California · 13085 days ago · 1 km deep · 88 km away
  60. 1.86 km WNW of Cobb, California · 13085 days ago · 1 km deep · 87 km away

The first 60 of 185.

Before

  1. 1.56 km WSW of Cobb, California · 13103 days ago · 0 km deep · 91 km away
  2. 1.98 km WSW of Cobb, California · 13104 days ago · 4 km deep · 88 km away
  3. 2.33 km WNW of Cobb, California · 13104 days ago · 1 km deep · 90 km away
  4. 2.23 km W of Cobb, California · 13104 days ago · 0 km deep · 90 km away
  5. 2.04 km SW of Cobb, California · 13104 days ago · 1 km deep · 93 km away
  6. 2.08 km WSW of Cobb, California · 13104 days ago · 1 km deep · 88 km away
  7. 1.95 km WNW of Cobb, California · 13104 days ago · 1 km deep · 88 km away
  8. 2.05 km WSW of Cobb, California · 13105 days ago · 0 km deep · 91 km away
  9. 1.824 km NE of Potter Valley, California · 13105 days ago · 10 km deep · 56 km away
  10. 1.67 km WSW of Cobb, California · 13106 days ago · 3 km deep · 88 km away
  11. 2.27 km NW of Cobb, California · 13107 days ago · 1 km deep · 85 km away
  12. 1.79 km W of Cobb, California · 13108 days ago · 1 km deep · 86 km away
  13. 1.67 km W of Cobb, California · 13108 days ago · 3 km deep · 87 km away
  14. 2.04 km SSW of Cobb, California · 13108 days ago · 1 km deep · 93 km away
  15. 1.66 km W of Cobb, California · 13108 days ago · 3 km deep · 87 km away
  16. 1.65 km WSW of Cobb, California · 13108 days ago · 3 km deep · 89 km away
  17. 2.04 km W of Cobb, California · 13108 days ago · -1 km deep · 89 km away
  18. 3.16 km W of Cobb, California · 13108 days ago · 3 km deep · 88 km away
  19. 1.77 km WSW of Cobb, California · 13108 days ago · 3 km deep · 88 km away
  20. 1.615 km NE of Upper Lake, California · 13109 days ago · 1 km deep · 70 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1181462. Read Sun, Oct 4, 2026, 8:07 PM UTC.