California earthquakes

M1.5 earthquake 19 km NNE of Upper Lake, California

A magnitude 1.5 earthquake struck 19 km NNE of Upper Lake, California on Mon, Sep 6, 1982, 1:54 PM PDT (20:54 UTC), 12 km (8 mi) below the surface.

A larger quake followed: M3.2 5 km WSW 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
1.5 (md), micro
Local time
UTC
1982-09-06 20:54:49 UTC
Depth
12.1 km (7.5 mi), shallow
Epicenter
39.309° N, 122.790° 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 0.3 km horizontally, 1.1 km in depth
Magnitude uncertainty
±0.22
Depth from
From location
Station coverage gap
119°
Stations used
9

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 120 in the 60 days after this one and 42 in the 30 days before it.

After

  1. 1.822 km WNW of Elk Creek, California · 16094 days ago · 6 km deep · 38 km away
  2. 2.022 km W of Elk Creek, California · 16094 days ago · 10 km deep · 34 km away
  3. 1.64 km SW of Saint Helena, California · 16094 days ago · 5 km deep · 96 km away
  4. 1.96 km WNW of Cobb, California · 16094 days ago · 1 km deep · 52 km away
  5. 1.811 km NW of Moskowite Corner, California · 16094 days ago · -1 km deep · 98 km away
  6. 1.60 km ENE of Chico, California · 16093 days ago · 5 km deep · 95 km away
  7. 3.018 km NE of Upper Lake, California · 16093 days ago · 15 km deep · 1 km away
  8. 2.318 km NNE of Upper Lake, California · 16093 days ago · 8 km deep · 1 km away
  9. 2.36 km W of Cobb, California · 16093 days ago · 3 km deep · 55 km away
  10. 1.66 km W of Cobb, California · 16093 days ago · 3 km deep · 55 km away
  11. 1.78 km SE of Laytonville, California · 16092 days ago · 6 km deep · 64 km away
  12. 1.912 km N of Brooktrails, California · 16091 days ago · 7 km deep · 56 km away
  13. 1.69 km SW of Clear Lake Riviera, California · 16090 days ago · -1 km deep · 47 km away
  14. 2.210 km SW of Arbuckle, California · 16089 days ago · 7 km deep · 70 km away
  15. 1.910 km SW of Arbuckle, California · 16089 days ago · 4 km deep · 70 km away
  16. 1.912 km WSW of Hopland, California · 16088 days ago · 6 km deep · 58 km away
  17. 1.66 km W of Cobb, California · 16088 days ago · 2 km deep · 55 km away
  18. 1.913 km WSW of Arbuckle, California · 16088 days ago · 5 km deep · 65 km away
  19. 1.93 km E of Fort Bragg, California · 16087 days ago · 3 km deep · 85 km away
  20. 1.57 km NW of Laytonville, California · 16087 days ago · 5 km deep · 80 km away
  21. 3.025 km SE of Covelo, California · 16085 days ago · 7 km deep · 42 km away
  22. 3.025 km SE of Covelo, California · 16085 days ago · 8 km deep · 41 km away
  23. 2.77 km W of Cobb, California · 16085 days ago · 1 km deep · 54 km away
  24. 1.925 km SE of Covelo, California · 16085 days ago · 6 km deep · 41 km away
  25. 2.0Northern California · 16085 days ago · 5 km deep · 98 km away
  26. 1.82 km SE of Larkfield-Wikiup, California · 16085 days ago · 5 km deep · 91 km away
  27. 2.36 km SSE of Cobb, California · 16084 days ago · 1 km deep · 60 km away
  28. 2.46 km W of Cobb, California · 16084 days ago · -1 km deep · 53 km away
  29. 1.97 km W of Cobb, California · 16084 days ago · -1 km deep · 53 km away
  30. 1.64 km SW of Hamilton City, California · 16084 days ago · 15 km deep · 77 km away
  31. 1.75 km SW of Cobb, California · 16083 days ago · 1 km deep · 57 km away
  32. 2.06 km WSW of Cobb, California · 16083 days ago · 6 km deep · 57 km away
  33. 1.615 km SSW of Laytonville, California · 16083 days ago · 5 km deep · 73 km away
  34. 2.15 km WSW of Cobb, California · 16082 days ago · 0 km deep · 57 km away
  35. 2.28 km W of Calistoga, California · 16082 days ago · 6 km deep · 80 km away
  36. 3.22 km W of Hamilton City, California · 16082 days ago · 22 km deep · 80 km away
  37. 1.88 km ESE of Hidden Valley Lake, California · 16081 days ago · 7 km deep · 65 km away
  38. 1.88 km W of Cobb, California · 16081 days ago · 1 km deep · 53 km away
  39. 2.39 km ESE of Hidden Valley Lake, California · 16079 days ago · 7 km deep · 65 km away
  40. 2.513 km ESE of Hidden Valley Lake, California · 16078 days ago · -1 km deep · 71 km away
  41. 2.110 km ESE of Hidden Valley Lake, California · 16078 days ago · 7 km deep · 66 km away
  42. 2.24 km S of Hamilton City, California · 16077 days ago · 17 km deep · 80 km away
  43. 1.54 km S of Cobb, California · 16077 days ago · -1 km deep · 59 km away
  44. 1.824 km SE of Covelo, California · 16077 days ago · 6 km deep · 42 km away
  45. 2.024 km SE of Covelo, California · 16077 days ago · 6 km deep · 42 km away
  46. 2.124 km SE of Covelo, California · 16077 days ago · 6 km deep · 42 km away
  47. 1.823 km SE of Covelo, California · 16077 days ago · 0 km deep · 43 km away
  48. 2.024 km SE of Covelo, California · 16077 days ago · 4 km deep · 42 km away
  49. 1.724 km SE of Covelo, California · 16077 days ago · 6 km deep · 42 km away
  50. 1.74 km SSW of Hamilton City, California · 16077 days ago · 18 km deep · 79 km away
  51. 1.68 km NW of Laytonville, California · 16076 days ago · 11 km deep · 82 km away
  52. 1.517 km ENE of Potter Valley, California · 16074 days ago · 10 km deep · 14 km away
  53. 3.25 km WSW of Cobb, California · 16074 days ago · 1 km deep · 57 km away
  54. 1.87 km W of Calistoga, California · 16073 days ago · 7 km deep · 81 km away
  55. 1.76 km ENE of Willits, California · 16071 days ago · 3 km deep · 45 km away
  56. 2.714 km NW of Brooktrails, California · 16071 days ago · 6 km deep · 66 km away
  57. 1.88 km WSW of Cobb, California · 16070 days ago · 0 km deep · 57 km away
  58. 1.98 km WSW of Cobb, California · 16067 days ago · 0 km deep · 57 km away
  59. 1.916 km NE of Upper Lake, California · 16067 days ago · 5 km deep · 3 km away
  60. 1.94 km S of Cobb, California · 16066 days ago · 0 km deep · 59 km away

The first 60 of 120.

Before

  1. 1.52 km W of Redwood Valley, California · 16096 days ago · 6 km deep · 38 km away
  2. 1.717 km E of Lower Lake, California · 16096 days ago · 2 km deep · 53 km away
  3. 1.719 km NNE of Upper Lake, California · 16098 days ago · 13 km deep · 0 km away
  4. 4.02 km NNE of Elk Creek, California · 16098 days ago · 13 km deep · 42 km away
  5. 1.63 km ESE of Lakeport, California · 16099 days ago · 8 km deep · 33 km away
  6. 1.94 km WSW of Cobb, California · 16100 days ago · 0 km deep · 56 km away
  7. 1.74 km SSE of Kelseyville, California · 16100 days ago · -1 km deep · 41 km away
  8. 2.018 km WSW of Lodoga, California · 16100 days ago · 10 km deep · 14 km away
  9. 1.98 km E of Willits, California · 16101 days ago · 7 km deep · 41 km away
  10. 1.55 km NNE of Kenwood, California · 16104 days ago · 5 km deep · 98 km away
  11. 1.616 km ESE of Cleone, California · 16104 days ago · 4 km deep · 71 km away
  12. 1.625 km NE of Potter Valley, California · 16104 days ago · 11 km deep · 25 km away
  13. 2.28 km NE of Hopland, California · 16104 days ago · 5 km deep · 38 km away
  14. 1.618 km NE of Clearlake, California · 16107 days ago · 21 km deep · 41 km away
  15. 1.57 km ENE of Willits, California · 16107 days ago · 8 km deep · 44 km away
  16. 1.88 km NE of Hopland, California · 16107 days ago · 5 km deep · 38 km away
  17. 1.86 km W of Cobb, California · 16107 days ago · 3 km deep · 54 km away
  18. 2.824 km SE of Covelo, California · 16108 days ago · 8 km deep · 42 km away
  19. 2.016 km ESE of Artois, California · 16108 days ago · 10 km deep · 73 km away
  20. 2.11 km ENE of Clear Lake Riviera, California · 16108 days ago · 2 km deep · 40 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1078625. Read Wed, Sep 30, 2026, 10:33 PM UTC.