California earthquakes

M1.8 earthquake 15 km NNE of Princeton, California

A magnitude 1.8 earthquake struck 15 km NNE of Princeton, California on Tue, Dec 21, 1982, 11:09 PM PST (07:09 UTC), 12 km (7 mi) below the surface.

A larger quake followed: M3.5 15 km SE of Paskenta, 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
1982-12-22 07:09:17 UTC
Depth
11.6 km (7.2 mi), shallow
Epicenter
39.524° N, 121.924° 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, 2.4 km in depth
Magnitude uncertainty
±0.15
Depth from
From location
Station coverage gap
117°
Stations used
10

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 46 in the 60 days after this one and 39 in the 30 days before it.

After

  1. 1.77 km ENE of Lincoln, California · 15992 days ago · 10 km deep · 90 km away
  2. 1.917 km WNW of Elk Creek, California · 15991 days ago · 10 km deep · 71 km away
  3. 1.722 km ENE of Potter Valley, California · 15990 days ago · 14 km deep · 83 km away
  4. 1.914 km SW of Lake Almanor West, California · 15989 days ago · 8 km deep · 86 km away
  5. 1.630 km NNE of Potter Valley, California · 15988 days ago · 14 km deep · 85 km away
  6. 1.511 km ESE of Hidden Valley Lake, California · 15988 days ago · 2 km deep · 96 km away
  7. 1.61 km SE of Clearlake, California · 15987 days ago · 2 km deep · 88 km away
  8. 2.016 km WSW of Paskenta, California · 15986 days ago · 4 km deep · 75 km away
  9. 1.63 km WSW of Paradise, California · 15986 days ago · 18 km deep · 33 km away
  10. 2.26 km E of Lakeport, California · 15985 days ago · 45 km deep · 95 km away
  11. 1.830 km W of Paskenta, California · 15981 days ago · 7 km deep · 94 km away
  12. 1.85 km N of Little Grass Valley, California · 15980 days ago · 5 km deep · 85 km away
  13. 2.513 km NE of Butte Meadows, California · 15978 days ago · 7 km deep · 83 km away
  14. 1.725 km SE of Covelo, California · 15977 days ago · 14 km deep · 98 km away
  15. 1.61 km SE of Clearlake, California · 15974 days ago · 3 km deep · 88 km away
  16. 1.812 km ESE of Hidden Valley Lake, California · 15974 days ago · 6 km deep · 96 km away
  17. 1.79 km SE of Hidden Valley Lake, California · 15974 days ago · 0 km deep · 99 km away
  18. 2.921 km NE of Potter Valley, California · 15972 days ago · 6 km deep · 87 km away
  19. 1.821 km NE of Potter Valley, California · 15972 days ago · 7 km deep · 87 km away
  20. 1.912 km ENE of Bend, California · 15971 days ago · 7 km deep · 85 km away
  21. 1.611 km SE of Hidden Valley Lake, California · 15970 days ago · 3 km deep · 97 km away
  22. 2.021 km NNE of Potter Valley, California · 15968 days ago · 8 km deep · 92 km away
  23. 1.99 km S of Hamilton City, California · 15968 days ago · 18 km deep · 17 km away
  24. 2.16 km ESE of Palermo, California · 15965 days ago · 0 km deep · 41 km away
  25. 1.624 km SE of Covelo, California · 15961 days ago · 14 km deep · 99 km away
  26. 1.9Northern California · 15960 days ago · 8 km deep · 88 km away
  27. 2.018 km NE of Nice, California · 15959 days ago · 8 km deep · 75 km away
  28. 1.513 km ESE of Hidden Valley Lake, California · 15958 days ago · 3 km deep · 95 km away
  29. 1.94 km WNW of Dobbins, California · 15956 days ago · 17 km deep · 60 km away
  30. 1.91 km WNW of Princeton, California · 15953 days ago · 22 km deep · 16 km away
  31. 1.623 km NE of Potter Valley, California · 15953 days ago · 10 km deep · 86 km away
  32. 2.017 km NW of Elk Creek, California · 15953 days ago · 4 km deep · 67 km away
  33. 1.520 km ENE of Potter Valley, California · 15952 days ago · 0 km deep · 85 km away
  34. 2.0Northern California · 15952 days ago · 4 km deep · 73 km away
  35. 1.526 km SSE of Covelo, California · 15951 days ago · -1 km deep · 99 km away
  36. 1.58 km NNE of Upper Lake, California · 15944 days ago · 0 km deep · 88 km away
  37. 3.024 km SE of Covelo, California · 15941 days ago · 11 km deep · 99 km away
  38. 2.620 km NW of Paskenta, California · 15941 days ago · -1 km deep · 87 km away
  39. 1.81 km SSE of Twain, California · 15940 days ago · 3 km deep · 91 km away
  40. 1.91 km SSW of Twain, California · 15940 days ago · 3 km deep · 90 km away
  41. 2.01 km N of Keddie, California · 15940 days ago · 4 km deep · 100 km away
  42. 1.723 km NE of Potter Valley, California · 15935 days ago · 9 km deep · 86 km away
  43. 2.36 km S of Oroville East, California · 15934 days ago · 7 km deep · 40 km away
  44. 2.33 km ESE of Palermo, California · 15934 days ago · 8 km deep · 38 km away
  45. 3.515 km SE of Paskenta, California · 15933 days ago · 18 km deep · 52 km away
  46. 1.623 km NE of Potter Valley, California · 15933 days ago · 8 km deep · 88 km away

Before

  1. 2.21 km SSE of Clearlake, California · 15993 days ago · 3 km deep · 88 km away
  2. 1.91 km SE of Clearlake, California · 15993 days ago · 3 km deep · 87 km away
  3. 2.31 km SSE of Clearlake, California · 15993 days ago · 3 km deep · 88 km away
  4. 2.41 km SSE of Clearlake, California · 15993 days ago · 3 km deep · 88 km away
  5. 1.61 km SSE of Clearlake, California · 15993 days ago · 2 km deep · 88 km away
  6. 1.92 km SE of Clearlake, California · 15993 days ago · 2 km deep · 87 km away
  7. 1.61 km SE of Clearlake, California · 15993 days ago · 3 km deep · 88 km away
  8. 2.92 km SE of Clearlake, California · 15993 days ago · 2 km deep · 87 km away
  9. 1.74 km NE of Clearlake, California · 15994 days ago · 1 km deep · 83 km away
  10. 1.72 km SW of Clearlake, California · 15994 days ago · 1 km deep · 90 km away
  11. 1.77 km WNW of Tobin, California · 15995 days ago · 7 km deep · 67 km away
  12. 2.5near the coast of Northern California · 15997 days ago · 5 km deep · 99 km away
  13. 1.55 km NNE of Cobb, California · 16003 days ago · 4 km deep · 99 km away
  14. 1.818 km NNE of Lucerne, California · 16003 days ago · 12 km deep · 73 km away
  15. 1.98 km NW of Newcastle, California · 16004 days ago · 9 km deep · 90 km away
  16. 2.86 km WSW of Lower Lake, California · 16006 days ago · 3 km deep · 95 km away
  17. 1.76 km SSE of Clear Lake Riviera, California · 16006 days ago · 5 km deep · 95 km away
  18. 2.228 km ENE of Covelo, California · 16007 days ago · 1 km deep · 96 km away
  19. 3.08 km NW of Williams, California · 16009 days ago · 14 km deep · 45 km away
  20. 3.37 km NW of Williams, California · 16009 days ago · 16 km deep · 45 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1083350. Read Sun, Oct 4, 2026, 8:42 PM UTC.