California earthquakes

M1.8 earthquake 22 km NNE of Upper Lake, California

A magnitude 1.8 earthquake struck 22 km NNE of Upper Lake, California on Mon, Oct 22, 1990, 11:30 AM PDT (18:30 UTC), 6 km (4 mi) below the surface.

A larger quake followed: M3.1 6 km W 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
1990-10-22 18:30:13 UTC
Depth
6.1 km (3.8 mi), shallow
Epicenter
39.357° N, 122.850° 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, 2.5 km in depth
Magnitude uncertainty
±0.04
Depth from
From location
Station coverage gap
185°, poorly surrounded by stations
Stations used
8

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 172 in the 60 days after this one and 85 in the 30 days before it.

After

  1. 1.66 km ESE of Hopland, California · 13131 days ago · 4 km deep · 48 km away
  2. 1.710 km NW of Cobb, California · 13131 days ago · 0 km deep · 53 km away
  3. 1.712 km ESE of Hidden Valley Lake, California · 13131 days ago · 5 km deep · 77 km away
  4. 2.54 km WSW of Cobb, California · 13130 days ago · 2 km deep · 62 km away
  5. 2.25 km WSW of Cobb, California · 13129 days ago · 0 km deep · 63 km away
  6. 2.16 km SW of Cobb, California · 13128 days ago · 0 km deep · 65 km away
  7. 2.510 km N of Cloverdale, California · 13127 days ago · -1 km deep · 53 km away
  8. 1.67 km S of Cobb, California · 13126 days ago · 2 km deep · 68 km away
  9. 1.94 km W of Cobb, California · 13126 days ago · 0 km deep · 60 km away
  10. 1.62 km NNE of Talmage, California · 13126 days ago · 5 km deep · 35 km away
  11. 1.62 km NNE of Talmage, California · 13126 days ago · 5 km deep · 35 km away
  12. 1.615 km N of Princeton, California · 13126 days ago · 8 km deep · 75 km away
  13. 1.97 km W of Cobb, California · 13125 days ago · 4 km deep · 60 km away
  14. 2.07 km W of Cobb, California · 13124 days ago · 3 km deep · 61 km away
  15. 2.64 km WSW of Cobb, California · 13124 days ago · 1 km deep · 62 km away
  16. 2.024 km NE of Potter Valley, California · 13123 days ago · 9 km deep · 18 km away
  17. 1.76 km W of Cobb, California · 13122 days ago · 3 km deep · 59 km away
  18. 1.56 km W of Cobb, California · 13122 days ago · 0 km deep · 60 km away
  19. 1.95 km W of Laytonville, California · 13121 days ago · 2 km deep · 71 km away
  20. 1.64 km SW of Cobb, California · 13121 days ago · 0 km deep · 63 km away
  21. 2.06 km WSW of Cobb, California · 13121 days ago · 1 km deep · 61 km away
  22. 1.69 km SW of Cloverdale, California · 13121 days ago · 1 km deep · 72 km away
  23. 2.84 km NE of Point Arena, California · 13120 days ago · -1 km deep · 84 km away
  24. 1.64 km W of Cobb, California · 13120 days ago · 0 km deep · 60 km away
  25. 1.912 km WSW of Willows, California · 13119 days ago · 5 km deep · 47 km away
  26. 1.89 km W of Cobb, California · 13118 days ago · 0 km deep · 60 km away
  27. 2.49 km W of Cobb, California · 13118 days ago · 1 km deep · 59 km away
  28. 2.39 km W of Cobb, California · 13118 days ago · 0 km deep · 60 km away
  29. 1.77 km W of Cobb, California · 13118 days ago · 3 km deep · 60 km away
  30. 1.64 km WSW of Cobb, California · 13117 days ago · 1 km deep · 61 km away
  31. 1.76 km W of Cobb, California · 13117 days ago · 1 km deep · 60 km away
  32. 1.92 km SW of Cobb, California · 13117 days ago · 2 km deep · 63 km away
  33. 2.07 km NE of Hidden Valley Lake, California · 13117 days ago · 12 km deep · 63 km away
  34. 1.84 km WSW of Cobb, California · 13117 days ago · 0 km deep · 62 km away
  35. 1.77 km S of Cobb, California · 13116 days ago · 1 km deep · 68 km away
  36. 1.87 km W of Cobb, California · 13115 days ago · 3 km deep · 60 km away
  37. 1.86 km W of Cobb, California · 13115 days ago · 3 km deep · 60 km away
  38. 1.67 km W of Cobb, California · 13115 days ago · 0 km deep · 58 km away
  39. 1.74 km SW of Cobb, California · 13115 days ago · 1 km deep · 64 km away
  40. 2.010 km W of Cobb, California · 13114 days ago · 0 km deep · 59 km away
  41. 1.69 km W of Cobb, CA · 13114 days ago · 1 km deep · 59 km away
  42. 2.1Northern California · 13113 days ago · 1 km deep · 60 km away
  43. 1.910 km W of Cobb, California · 13113 days ago · 1 km deep · 60 km away
  44. 1.610 km E of Cloverdale, California · 13112 days ago · 5 km deep · 60 km away
  45. 1.78 km ENE of Willits, California · 13112 days ago · 3 km deep · 36 km away
  46. 1.57 km WNW of Cobb, California · 13112 days ago · 0 km deep · 58 km away
  47. 2.310 km W of Elk Creek, California · 13111 days ago · 11 km deep · 32 km away
  48. 2.57 km W of Cobb, California · 13111 days ago · 0 km deep · 58 km away
  49. 1.76 km W of Cobb, California · 13111 days ago · 1 km deep · 60 km away
  50. 2.35 km SW of Cobb, California · 13110 days ago · 2 km deep · 64 km away
  51. 2.39 km W of Cobb, California · 13110 days ago · -1 km deep · 60 km away
  52. 1.615 km NE of Upper Lake, California · 13109 days ago · 1 km deep · 14 km away
  53. 1.77 km WSW of Cobb, California · 13108 days ago · 3 km deep · 62 km away
  54. 3.16 km W of Cobb, California · 13108 days ago · 3 km deep · 61 km away
  55. 2.04 km W of Cobb, California · 13108 days ago · -1 km deep · 61 km away
  56. 1.65 km WSW of Cobb, California · 13108 days ago · 3 km deep · 61 km away
  57. 1.66 km W of Cobb, California · 13108 days ago · 3 km deep · 60 km away
  58. 2.04 km SSW of Cobb, California · 13108 days ago · 1 km deep · 64 km away
  59. 1.67 km W of Cobb, California · 13108 days ago · 3 km deep · 60 km away
  60. 1.79 km W of Cobb, California · 13108 days ago · 1 km deep · 60 km away

The first 60 of 172.

Before

  1. 1.73 km NNW of Larkfield-Wikiup, California · 13132 days ago · 5 km deep · 91 km away
  2. 1.510 km NNW of Rancho Tehama Reserve, California · 13132 days ago · 21 km deep · 88 km away
  3. 1.84 km E of Cobb, California · 13132 days ago · 39 km deep · 62 km away
  4. 2.14 km W of Cobb, California · 13133 days ago · 0 km deep · 60 km away
  5. 1.55 km WSW of Cobb, California · 13133 days ago · 1 km deep · 62 km away
  6. 1.918 km E of Potter Valley, California · 13133 days ago · 4 km deep · 4 km away
  7. 2.018 km WNW of Rancho Tehama Reserve, California · 13133 days ago · 17 km deep · 84 km away
  8. 2.119 km E of Potter Valley, California · 13133 days ago · 6 km deep · 4 km away
  9. 1.57 km W of Middletown, California · 13133 days ago · -1 km deep · 69 km away
  10. 1.98 km W of Cobb, California · 13134 days ago · 1 km deep · 59 km away
  11. 2.25 km W of Cobb, California · 13134 days ago · 2 km deep · 60 km away
  12. 1.67 km WSW of Cobb, California · 13136 days ago · 0 km deep · 62 km away
  13. 2.87 km WSW of Cobb, California · 13136 days ago · 0 km deep · 61 km away
  14. 1.74 km WSW of Cobb, California · 13136 days ago · 1 km deep · 62 km away
  15. 2.56 km S of Cobb, California · 13136 days ago · 0 km deep · 67 km away
  16. 1.68 km ENE of Brooktrails, California · 13137 days ago · 4 km deep · 41 km away
  17. 2.46 km ENE of Willows, California · 13137 days ago · 17 km deep · 66 km away
  18. 1.610 km W of Cobb, California · 13137 days ago · 0 km deep · 60 km away
  19. 1.88 km W of Cobb, California · 13138 days ago · 2 km deep · 59 km away
  20. 1.75 km WSW of Cobb, California · 13139 days ago · 0 km deep · 61 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1180903. Read Sun, Oct 4, 2026, 8:06 PM UTC.