California earthquakes

M1.8 earthquake 16 km NNW of Chester, California

A magnitude 1.8 earthquake struck 16 km NNW of Chester, California on Sat, Oct 9, 1982, 3:33 PM PDT (22:33 UTC), -1 km (-1 mi) below the surface.

A larger quake followed: M3.0 5 km SSW of Graeagle, California. This one was a foreshock.

Chester 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, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
1982-10-09 22:33:42 UTC
Depth
-1.0 km (-0.6 mi), shallow
Epicenter
40.444° N, 121.310° 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 5.5 km horizontally, 3.4 km in depth
Magnitude uncertainty
±0.13
Depth from
From location
Station coverage gap
188°, poorly surrounded by stations
Stations used
4

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 36 in the 60 days after this one and 26 in the 30 days before it.

After

  1. 1.83 km S of Chester, California · 16061 days ago · 3 km deep · 20 km away
  2. 2.617 km NW of McArthur, California · 16061 days ago · 4 km deep · 81 km away
  3. 1.91 km SSE of Chester, California · 16060 days ago · 3 km deep · 18 km away
  4. 2.013 km W of Chester, California · 16060 days ago · 7 km deep · 18 km away
  5. 1.715 km ESE of Mineral, California · 16060 days ago · 3 km deep · 20 km away
  6. 1.914 km W of Chester, California · 16060 days ago · 3 km deep · 17 km away
  7. 1.913 km W of Chester, California · 16059 days ago · 6 km deep · 19 km away
  8. 1.515 km ESE of Mineral, California · 16058 days ago · 13 km deep · 18 km away
  9. 2.213 km W of Chester, California · 16058 days ago · 9 km deep · 19 km away
  10. 2.313 km W of Chester, California · 16058 days ago · 10 km deep · 18 km away
  11. 1.513 km W of Chester, California · 16058 days ago · 8 km deep · 16 km away
  12. 1.913 km W of Chester, California · 16055 days ago · 8 km deep · 18 km away
  13. 1.9Northern California · 16054 days ago · 6 km deep · 18 km away
  14. 2.315 km W of Chester, California · 16054 days ago · 11 km deep · 19 km away
  15. 2.23 km SSW of Chester, California · 16051 days ago · -2 km deep · 20 km away
  16. 2.51 km ENE of Chico, California · 16047 days ago · 21 km deep · 90 km away
  17. 2.214 km NNE of Mineral, California · 16047 days ago · 2 km deep · 20 km away
  18. 1.712 km SW of Bucks Lake, California · 16046 days ago · 5 km deep · 72 km away
  19. 1.914 km NNE of Mineral, California · 16046 days ago · 1 km deep · 21 km away
  20. 2.111 km SE of Big Bend, California · 16045 days ago · 3 km deep · 71 km away
  21. 1.912 km E of Cottonwood, California · 16045 days ago · 19 km deep · 70 km away
  22. 2.32 km NNE of Susanville, California · 16038 days ago · 1 km deep · 57 km away
  23. 1.516 km NNE of Mineral, California · 16038 days ago · 1 km deep · 16 km away
  24. 2.016 km NNE of Mineral, California · 16038 days ago · 1 km deep · 16 km away
  25. 1.816 km NNE of Mineral, California · 16038 days ago · 1 km deep · 16 km away
  26. 1.921 km S of Burney, California · 16037 days ago · 3 km deep · 42 km away
  27. 3.05 km SSW of Graeagle, California · 16036 days ago · 6 km deep · 98 km away
  28. 2.45 km WSW of Susanville, California · 16036 days ago · 6 km deep · 51 km away
  29. 2.512 km NE of Vina, California · 16035 days ago · 0 km deep · 72 km away
  30. 2.17 km WNW of Susanville, California · 16035 days ago · 1 km deep · 49 km away
  31. 1.99 km NW of Susanville, California · 16034 days ago · 2 km deep · 48 km away
  32. 1.924 km E of Hat Creek, California · 16033 days ago · 7 km deep · 46 km away
  33. 2.712 km NE of Bend, California · 16017 days ago · -1 km deep · 68 km away
  34. 2.44 km SSW of Greenville, California · 16013 days ago · 16 km deep · 47 km away
  35. 1.9Northern California · 16011 days ago · 4 km deep · 11 km away
  36. 1.616 km WSW of Old Station, California · 16008 days ago · 9 km deep · 33 km away

Before

  1. 2.115 km NE of Mineral, California · 16070 days ago · 3 km deep · 14 km away
  2. 1.515 km NNE of Mineral, California · 16071 days ago · 2 km deep · 18 km away
  3. 1.713 km NNE of Mineral, California · 16072 days ago · 2 km deep · 18 km away
  4. 2.11 km WNW of Prattville, California · 16074 days ago · 5 km deep · 28 km away
  5. 2.310 km WNW of Cohasset, California · 16074 days ago · 16 km deep · 72 km away
  6. 2.15 km SW of Chester, California · 16074 days ago · 3 km deep · 19 km away
  7. 2.717 km WNW of McArthur, California · 16075 days ago · 3 km deep · 79 km away
  8. 2.03 km E of Canyondam, California · 16077 days ago · 4 km deep · 39 km away
  9. 1.713 km W of Chester, California · 16081 days ago · 9 km deep · 19 km away
  10. 1.513 km W of Chester, California · 16082 days ago · 3 km deep · 17 km away
  11. 1.613 km W of Chester, California · 16082 days ago · 11 km deep · 19 km away
  12. 2.56 km NNE of Los Molinos, California · 16083 days ago · 16 km deep · 76 km away
  13. 2.37 km SSW of Taylorsville, California · 16083 days ago · 5 km deep · 61 km away
  14. 2.04 km S of Mineral, CA · 16083 days ago · 5 km deep · 28 km away
  15. 1.814 km W of Chester, California · 16083 days ago · 3 km deep · 18 km away
  16. 1.712 km WSW of Chester, California · 16084 days ago · 3 km deep · 19 km away
  17. 1.913 km W of Chester, California · 16084 days ago · 3 km deep · 18 km away
  18. 2.812 km W of Chester, California · 16084 days ago · 10 km deep · 18 km away
  19. 1.713 km S of Old Station, California · 16086 days ago · 3 km deep · 16 km away
  20. 3.22 km W of Hamilton City, California · 16086 days ago · 22 km deep · 100 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1080126. Read Mon, Oct 5, 2026, 6:18 AM UTC.