California earthquakes

M1.8 earthquake 2 km NNE of Princeton, California

A magnitude 1.8 earthquake struck 2 km NNE of Princeton, California on Mon, Aug 16, 1982, 3:31 PM PDT (22:31 UTC), 12 km (7 mi) below the surface.

A larger quake followed: M2.7 17 km WNW of Elk Creek, California. This one was a foreshock.

Willows 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
1.8 (md), micro
Local time
UTC
1982-08-16 22:31:39 UTC
Depth
11.9 km (7.4 mi), shallow
Epicenter
39.423° N, 121.998° 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 1.1 km horizontally, 1.0 km in depth
Magnitude uncertainty
±0.19
Depth from
From location
Station coverage gap
237°, poorly surrounded by stations
Stations used
5

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 92 in the 60 days after this one and 65 in the 30 days before it.

After

  1. 1.624 km NE of Potter Valley, California · 16107 days ago · 10 km deep · 82 km away
  2. 1.77 km WSW of Cobb, California · 16107 days ago · 1 km deep · 98 km away
  3. 2.717 km WNW of Elk Creek, California · 16107 days ago · -1 km deep · 68 km away
  4. 2.38 km NE of Berry Creek, California · 16106 days ago · 4 km deep · 65 km away
  5. 2.76 km WSW of Cobb, California · 16106 days ago · 3 km deep · 97 km away
  6. 1.77 km NNE of Belden, California · 16104 days ago · 7 km deep · 99 km away
  7. 2.10 km W of Lakeport, California · 16103 days ago · 19 km deep · 90 km away
  8. 2.92 km SW of Lakeport, California · 16103 days ago · 17 km deep · 92 km away
  9. 2.49 km WSW of Cobb, California · 16103 days ago · 2 km deep · 99 km away
  10. 1.821 km NE of Potter Valley, California · 16102 days ago · 7 km deep · 81 km away
  11. 1.66 km W of Cobb, California · 16101 days ago · 3 km deep · 96 km away
  12. 2.35 km WSW of Cobb, California · 16101 days ago · 1 km deep · 97 km away
  13. 2.11 km ENE of Clear Lake Riviera, California · 16100 days ago · 2 km deep · 79 km away
  14. 2.016 km ESE of Artois, California · 16100 days ago · 10 km deep · 17 km away
  15. 1.810 km ESE of Bend, California · 16099 days ago · 10 km deep · 91 km away
  16. 2.824 km SE of Covelo, California · 16099 days ago · 8 km deep · 95 km away
  17. 1.86 km W of Cobb, California · 16099 days ago · 3 km deep · 96 km away
  18. 1.618 km NE of Clearlake, California · 16099 days ago · 21 km deep · 57 km away
  19. 1.625 km NE of Potter Valley, California · 16096 days ago · 11 km deep · 81 km away
  20. 2.018 km WSW of Lodoga, California · 16092 days ago · 10 km deep · 62 km away
  21. 1.74 km SSE of Kelseyville, California · 16092 days ago · -1 km deep · 89 km away
  22. 1.94 km WSW of Cobb, California · 16092 days ago · 0 km deep · 96 km away
  23. 1.63 km ESE of Lakeport, California · 16091 days ago · 8 km deep · 88 km away
  24. 1.63 km S of Oroville East, California · 16091 days ago · 5 km deep · 46 km away
  25. 4.02 km NNE of Elk Creek, California · 16090 days ago · 13 km deep · 51 km away
  26. 1.719 km NNE of Upper Lake, California · 16090 days ago · 13 km deep · 69 km away
  27. 1.717 km E of Lower Lake, California · 16088 days ago · 2 km deep · 65 km away
  28. 1.519 km NNE of Upper Lake, California · 16087 days ago · 12 km deep · 69 km away
  29. 1.822 km WNW of Elk Creek, California · 16086 days ago · 6 km deep · 73 km away
  30. 2.022 km W of Elk Creek, California · 16086 days ago · 10 km deep · 72 km away
  31. 1.96 km WNW of Cobb, California · 16086 days ago · 1 km deep · 95 km away
  32. 1.81 km NE of South Oroville, California · 16085 days ago · 7 km deep · 40 km away
  33. 1.60 km ENE of Chico, California · 16085 days ago · 5 km deep · 37 km away
  34. 3.018 km NE of Upper Lake, California · 16085 days ago · 15 km deep · 69 km away
  35. 2.318 km NNE of Upper Lake, California · 16085 days ago · 8 km deep · 70 km away
  36. 2.36 km W of Cobb, California · 16084 days ago · 3 km deep · 96 km away
  37. 1.66 km W of Cobb, California · 16084 days ago · 3 km deep · 96 km away
  38. 1.69 km SW of Clear Lake Riviera, California · 16082 days ago · -1 km deep · 91 km away
  39. 2.210 km SW of Arbuckle, California · 16081 days ago · 7 km deep · 55 km away
  40. 1.910 km SW of Arbuckle, California · 16081 days ago · 4 km deep · 55 km away
  41. 1.66 km W of Cobb, California · 16080 days ago · 2 km deep · 97 km away
  42. 1.913 km WSW of Arbuckle, California · 16080 days ago · 5 km deep · 55 km away
  43. 1.813 km ENE of Butte Meadows, California · 16079 days ago · 6 km deep · 92 km away
  44. 3.025 km SE of Covelo, California · 16077 days ago · 7 km deep · 95 km away
  45. 3.025 km SE of Covelo, California · 16077 days ago · 8 km deep · 94 km away
  46. 2.77 km W of Cobb, California · 16077 days ago · 1 km deep · 96 km away
  47. 1.925 km SE of Covelo, California · 16077 days ago · 6 km deep · 94 km away
  48. 2.0Northern California · 16077 days ago · 5 km deep · 40 km away
  49. 2.36 km SSE of Cobb, California · 16076 days ago · 1 km deep · 94 km away
  50. 2.46 km W of Cobb, California · 16076 days ago · -1 km deep · 95 km away
  51. 1.97 km W of Cobb, California · 16076 days ago · -1 km deep · 96 km away
  52. 1.64 km SW of Hamilton City, California · 16076 days ago · 15 km deep · 33 km away
  53. 1.75 km SW of Cobb, California · 16075 days ago · 1 km deep · 97 km away
  54. 2.06 km WSW of Cobb, California · 16075 days ago · 6 km deep · 97 km away
  55. 2.15 km WSW of Cobb, California · 16074 days ago · 0 km deep · 97 km away
  56. 3.22 km W of Hamilton City, California · 16073 days ago · 22 km deep · 36 km away
  57. 1.88 km ESE of Hidden Valley Lake, California · 16072 days ago · 7 km deep · 82 km away
  58. 1.88 km W of Cobb, California · 16072 days ago · 1 km deep · 96 km away
  59. 2.39 km ESE of Hidden Valley Lake, California · 16070 days ago · 7 km deep · 82 km away
  60. 2.513 km ESE of Hidden Valley Lake, California · 16070 days ago · -1 km deep · 84 km away

The first 60 of 92.

Before

  1. 1.86 km WSW of Cobb, California · 16109 days ago · 0 km deep · 97 km away
  2. 1.83 km SE of Clear Lake Riviera, California · 16111 days ago · -1 km deep · 80 km away
  3. 1.720 km W of Elk Creek, California · 16112 days ago · 4 km deep · 70 km away
  4. 2.26 km W of Cobb, California · 16114 days ago · 3 km deep · 96 km away
  5. 2.55 km WNW of Hamilton City, California · 16116 days ago · 24 km deep · 38 km away
  6. 2.022 km NE of Potter Valley, California · 16116 days ago · 1 km deep · 81 km away
  7. 2.76 km W of Cobb, California · 16116 days ago · 4 km deep · 96 km away
  8. 1.9Northern California · 16117 days ago · 3 km deep · 91 km away
  9. 1.65 km SW of Cobb, California · 16118 days ago · 0 km deep · 97 km away
  10. 2.35 km SW of Cobb, California · 16118 days ago · 1 km deep · 97 km away
  11. 1.75 km SW of Cobb, California · 16118 days ago · -1 km deep · 97 km away
  12. 1.85 km SW of Cobb, California · 16118 days ago · 0 km deep · 97 km away
  13. 2.45 km SW of Cobb, California · 16118 days ago · -1 km deep · 97 km away
  14. 1.66 km SW of Cobb, California · 16118 days ago · 2 km deep · 98 km away
  15. 2.86 km W of Cobb, California · 16118 days ago · 3 km deep · 97 km away
  16. 1.68 km WSW of Cobb, California · 16118 days ago · 3 km deep · 99 km away
  17. 1.83 km SSE of Clear Lake Riviera, California · 16119 days ago · 1 km deep · 82 km away
  18. 1.85 km SE of Clear Lake Riviera, California · 16119 days ago · 4 km deep · 82 km away
  19. 1.64 km SE of Clear Lake Riviera, California · 16119 days ago · 2 km deep · 81 km away
  20. 1.94 km SE of Clear Lake Riviera, California · 16119 days ago · 2 km deep · 81 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1077634. Read Tue, Sep 22, 2026, 4:50 PM UTC.