California earthquakes

M1.8 earthquake 16 km NNE of Upper Lake, California

A magnitude 1.8 earthquake struck 16 km NNE of Upper Lake, California on Sun, Jul 11, 1982, 10:15 PM PDT (05:15 UTC), 14 km (9 mi) below the surface.

A larger quake followed: M2.0 2 km ESE of Deer Park, 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), micro
Local time
UTC
1982-07-12 05:15:23 UTC
Depth
14.3 km (8.9 mi), shallow
Epicenter
39.288° N, 122.809° 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
±0.28
Depth from
From location
Station coverage gap
105°
Stations used
13

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 135 in the 60 days after this one and 64 in the 30 days before it.

After

  1. 1.612 km ENE of Angwin, California · 16143 days ago · -1 km deep · 87 km away
  2. 1.68 km ESE of Cloverdale, California · 16143 days ago · 6 km deep · 57 km away
  3. 1.65 km SW of Cobb, California · 16143 days ago · -1 km deep · 56 km away
  4. 2.02 km ESE of Deer Park, California · 16143 days ago · 11 km deep · 91 km away
  5. 2.10 km NE of North Lakeport, California · 16143 days ago · 19 km deep · 23 km away
  6. 2.422 km NNE of Potter Valley, California · 16142 days ago · 1 km deep · 27 km away
  7. 1.723 km NNE of Potter Valley, California · 16142 days ago · 4 km deep · 32 km away
  8. 2.118 km NNE of Nice, California · 16142 days ago · 6 km deep · 6 km away
  9. 2.018 km NNE of Nice, California · 16142 days ago · 8 km deep · 7 km away
  10. 2.217 km NNE of Nice, California · 16142 days ago · 13 km deep · 7 km away
  11. 1.64 km WNW of Ukiah, California · 16141 days ago · 5 km deep · 41 km away
  12. 1.54 km WNW of Ukiah, California · 16141 days ago · 4 km deep · 41 km away
  13. 1.714 km N of Brooktrails, California · 16141 days ago · 10 km deep · 59 km away
  14. 1.812 km W of Paskenta, California · 16141 days ago · 4 km deep · 69 km away
  15. 2.35 km SW of Cobb, California · 16138 days ago · 0 km deep · 55 km away
  16. 1.87 km W of Cobb, California · 16138 days ago · 3 km deep · 53 km away
  17. 3.29 km NNW of Paskenta, California · 16138 days ago · 5 km deep · 78 km away
  18. 1.56 km W of Cobb, California · 16138 days ago · 3 km deep · 53 km away
  19. 2.09 km SSE of Laytonville, California · 16137 days ago · 8 km deep · 64 km away
  20. 2.06 km NE of Cloverdale, California · 16137 days ago · 4 km deep · 50 km away
  21. 2.514 km W of Rancho Tehama Reserve, California · 16137 days ago · -1 km deep · 84 km away
  22. 2.115 km W of Paskenta, California · 16137 days ago · 5 km deep · 69 km away
  23. 3.714 km W of Rancho Tehama Reserve, California · 16137 days ago · -1 km deep · 85 km away
  24. 1.55 km SE of Hamilton City, California · 16137 days ago · 23 km deep · 86 km away
  25. 2.42 km NW of Paskenta, California · 16137 days ago · 5 km deep · 71 km away
  26. 2.68 km NNW of Paskenta, California · 16136 days ago · 7 km deep · 76 km away
  27. 2.216 km NW of Paskenta, California · 16136 days ago · 8 km deep · 80 km away
  28. 2.414 km W of Rancho Tehama Reserve, California · 16135 days ago · 0 km deep · 85 km away
  29. 1.513 km NNW of Moskowite Corner, California · 16135 days ago · 3 km deep · 94 km away
  30. 2.09 km WNW of Cobb, California · 16134 days ago · 1 km deep · 48 km away
  31. 1.57 km WSW of Cobb, California · 16132 days ago · 3 km deep · 54 km away
  32. 2.419 km NW of Paskenta, California · 16132 days ago · 2 km deep · 83 km away
  33. 2.012 km SSW of Hopland, California · 16131 days ago · 0 km deep · 55 km away
  34. 1.84 km E of Point Arena, California · 16130 days ago · 3 km deep · 83 km away
  35. 1.59 km WSW of Cobb, California · 16130 days ago · 1 km deep · 55 km away
  36. 1.75 km SW of Cobb, California · 16129 days ago · 1 km deep · 55 km away
  37. 1.56 km SW of Cobb, California · 16129 days ago · 2 km deep · 57 km away
  38. 1.910 km SE of Hopland, California · 16129 days ago · 7 km deep · 46 km away
  39. 2.217 km NE of Upper Lake, California · 16128 days ago · 7 km deep · 1 km away
  40. 2.124 km E of Covelo, California · 16128 days ago · 4 km deep · 57 km away
  41. 1.7Northern California · 16128 days ago · 11 km deep · 26 km away
  42. 1.75 km NNE of Clearlake, California · 16128 days ago · 2 km deep · 36 km away
  43. 2.48 km SE of Laytonville, California · 16127 days ago · 4 km deep · 64 km away
  44. 2.220 km W of Elk Creek, California · 16124 days ago · 5 km deep · 36 km away
  45. 1.924 km NE of Potter Valley, California · 16124 days ago · 9 km deep · 26 km away
  46. 3.014 km WSW of Elk Creek, California · 16123 days ago · -1 km deep · 32 km away
  47. 2.15 km WSW of Cobb, California · 16123 days ago · 0 km deep · 55 km away
  48. 1.918 km NNE of Upper Lake, California · 16123 days ago · 7 km deep · 4 km away
  49. 2.52 km WNW of Cobb, California · 16123 days ago · 2 km deep · 51 km away
  50. 1.73 km SW of Rutherford, California · 16122 days ago · 4 km deep · 100 km away
  51. 1.98 km E of Lower Lake, California · 16122 days ago · 6 km deep · 48 km away
  52. 2.27 km E of Lower Lake, California · 16122 days ago · -1 km deep · 48 km away
  53. 2.08 km E of Lower Lake, California · 16122 days ago · 3 km deep · 48 km away
  54. 1.76 km ENE of Lower Lake, California · 16122 days ago · 2 km deep · 47 km away
  55. 2.48 km E of Lower Lake, California · 16122 days ago · 1 km deep · 48 km away
  56. 1.87 km E of Lower Lake, California · 16122 days ago · 2 km deep · 48 km away
  57. 1.66 km W of Cobb, California · 16121 days ago · 3 km deep · 52 km away
  58. 1.67 km WSW of Cobb, California · 16121 days ago · 3 km deep · 54 km away
  59. 2.04 km SE of Clear Lake Riviera, California · 16121 days ago · 2 km deep · 42 km away
  60. 2.65 km SE of Clear Lake Riviera, California · 16120 days ago · 0 km deep · 42 km away

The first 60 of 135.

Before

  1. 2.28 km NNW of Geyserville, California · 16144 days ago · 3 km deep · 57 km away
  2. 2.38 km ESE of Cloverdale, California · 16144 days ago · 5 km deep · 57 km away
  3. 1.67 km NNW of Geyserville, California · 16144 days ago · 3 km deep · 58 km away
  4. 2.012 km N of Brooktrails, California · 16144 days ago · 8 km deep · 56 km away
  5. 2.48 km SW of Willows, California · 16144 days ago · 25 km deep · 51 km away
  6. 1.615 km NE of Potter Valley, California · 16145 days ago · 1 km deep · 22 km away
  7. 2.216 km NE of Upper Lake, California · 16145 days ago · 5 km deep · 4 km away
  8. 2.84 km WSW of Cobb, California · 16145 days ago · 1 km deep · 54 km away
  9. 1.79 km SE of Hopland, California · 16147 days ago · 6 km deep · 45 km away
  10. 1.924 km SE of Covelo, California · 16147 days ago · 5 km deep · 44 km away
  11. 1.84 km SSE of Calpella, California · 16148 days ago · 3 km deep · 33 km away
  12. 1.77 km W of Cobb, California · 16148 days ago · 2 km deep · 52 km away
  13. 1.87 km ESE of Willits, California · 16148 days ago · 2 km deep · 42 km away
  14. 1.56 km ENE of Hopland, California · 16148 days ago · 5 km deep · 38 km away
  15. 1.612 km NE of Cloverdale, California · 16151 days ago · 3 km deep · 46 km away
  16. 2.76 km N of Princeton, California · 16151 days ago · 16 km deep · 71 km away
  17. 1.77 km ESE of Geyserville, California · 16151 days ago · 6 km deep · 67 km away
  18. 1.71 km NNW of Larkfield-Wikiup, California · 16152 days ago · 5 km deep · 85 km away
  19. 1.94 km SSE of Calpella, California · 16152 days ago · 5 km deep · 33 km away
  20. 2.66 km W of Cobb, California · 16153 days ago · 4 km deep · 52 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1076154. Read Tue, Sep 22, 2026, 8:36 PM UTC.