California earthquakes

M1.7 earthquake 12 km WNW of Chester, California

A magnitude 1.7 earthquake struck 12 km WNW of Chester, California on Fri, Apr 9, 1982, 5:01 PM PST (01:01 UTC), 4 km (3 mi) below the surface.

A larger quake followed: M1.8 16 km NNE of Mineral, 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.

Open the live map with earthquakes

The earthquake

Magnitude
1.7 (md), micro
Local time
UTC
1982-04-10 01:01:28 UTC
Depth
4.2 km (2.6 mi), shallow
Epicenter
40.362° N, 121.363° 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 0.7 km horizontally, 2.4 km in depth
Magnitude uncertainty
±0.30
Depth from
From location
Station coverage gap
301°, 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: 44 in the 60 days after this one and 23 in the 30 days before it.

After

  1. 1.610 km WNW of Chester, California · 16237 days ago · 1 km deep · 2 km away
  2. 1.816 km NNE of Mineral, California · 16233 days ago · 1 km deep · 17 km away
  3. 2.012 km N of Mineral, California · 16231 days ago · 19 km deep · 22 km away
  4. 1.811 km W of Chester, California · 16231 days ago · 4 km deep · 7 km away
  5. 1.913 km WNW of Round Mountain, California · 16230 days ago · 4 km deep · 81 km away
  6. 1.711 km ESE of Mineral, California · 16229 days ago · 6 km deep · 9 km away
  7. 1.516 km W of Montgomery Creek, California · 16229 days ago · 3 km deep · 85 km away
  8. 1.65 km NW of Old Station, California · 16228 days ago · 3 km deep · 41 km away
  9. 2.38 km WSW of Lake Almanor West, California · 16228 days ago · 2 km deep · 19 km away
  10. 2.15 km NNE of Bella Vista, California · 16227 days ago · 3 km deep · 79 km away
  11. 1.518 km W of Round Mountain, California · 16225 days ago · 3 km deep · 84 km away
  12. 1.99 km WNW of Chester, California · 16225 days ago · 2 km deep · 4 km away
  13. 1.631 km E of Old Station, California · 16225 days ago · 2 km deep · 46 km away
  14. 2.26 km WNW of Manton, California · 16225 days ago · 10 km deep · 50 km away
  15. 1.84 km W of Manton, California · 16223 days ago · 1 km deep · 48 km away
  16. 2.510 km E of Manton, California · 16223 days ago · 0 km deep · 34 km away
  17. 1.815 km E of Lakehead, California · 16222 days ago · 4 km deep · 93 km away
  18. 2.03 km E of Twain, California · 16221 days ago · 20 km deep · 48 km away
  19. 2.40 km WNW of Paynes Creek, California · 16221 days ago · 9 km deep · 48 km away
  20. 2.31 km ESE of East Shore, California · 16219 days ago · -1 km deep · 30 km away
  21. 2.14 km SSE of Keddie, California · 16219 days ago · 7 km deep · 55 km away
  22. 2.50 km W of Graeagle, California · 16216 days ago · 5 km deep · 91 km away
  23. 1.716 km NW of Chester, California · 16213 days ago · 6 km deep · 7 km away
  24. 1.521 km NNW of Chester, California · 16213 days ago · 3 km deep · 13 km away
  25. 1.82 km E of Oroville, California · 16212 days ago · 9 km deep · 95 km away
  26. 1.911 km SE of Mineral, California · 16211 days ago · 9 km deep · 13 km away
  27. 2.512 km ENE of Bend, California · 16210 days ago · 13 km deep · 61 km away
  28. 1.84 km W of Twain, California · 16206 days ago · 0 km deep · 43 km away
  29. 2.012 km W of La Porte, California · 16205 days ago · 3 km deep · 78 km away
  30. 2.39 km NNW of Old Station, California · 16202 days ago · 8 km deep · 45 km away
  31. 1.511 km NW of Chester, California · 16202 days ago · 3 km deep · 3 km away
  32. 2.411 km N of Little Grass Valley, California · 16192 days ago · 11 km deep · 68 km away
  33. 1.717 km NE of Mineral, California · 16191 days ago · 4 km deep · 13 km away
  34. 2.115 km NNE of Shingletown, California · 16189 days ago · 7 km deep · 47 km away
  35. 2.31 km SE of Palo Cedro, California · 16186 days ago · 4 km deep · 76 km away
  36. 1.93 km NE of Clipper Mills, California · 16185 days ago · 2 km deep · 92 km away
  37. 2.113 km W of La Porte, California · 16184 days ago · 1 km deep · 77 km away
  38. 2.117 km WSW of Chester, California · 16184 days ago · 4 km deep · 15 km away
  39. 2.313 km N of Rancho Tehama Reserve, California · 16183 days ago · -1 km deep · 93 km away
  40. 1.66 km NW of Anderson, California · 16182 days ago · 2 km deep · 84 km away
  41. 3.12 km E of Oroville, California · 16180 days ago · 9 km deep · 95 km away
  42. 3.02 km E of Oroville, California · 16180 days ago · 9 km deep · 95 km away
  43. 3.22 km E of Oroville, California · 16180 days ago · 9 km deep · 95 km away
  44. 1.62 km ENE of Oroville, California · 16180 days ago · 9 km deep · 95 km away

Before

  1. 2.83 km S of Burney, California · 16237 days ago · 3 km deep · 60 km away
  2. 2.64 km S of Burney, California · 16237 days ago · 3 km deep · 59 km away
  3. 2.63 km S of Burney, California · 16237 days ago · 6 km deep · 59 km away
  4. 1.98 km SW of Paynes Creek, California · 16238 days ago · 3 km deep · 52 km away
  5. 2.014 km E of Mineral, California · 16238 days ago · 9 km deep · 5 km away
  6. 2.54 km ESE of East Quincy, California · 16240 days ago · 2 km deep · 66 km away
  7. 2.120 km S of Old Station, California · 16241 days ago · 12 km deep · 16 km away
  8. 2.45 km NNW of Chester, California · 16244 days ago · 17 km deep · 9 km away
  9. 1.812 km NE of Mineral, California · 16245 days ago · 4 km deep · 15 km away
  10. 2.54 km WSW of Paradise, California · 16248 days ago · 20 km deep · 74 km away
  11. 1.615 km NNE of Mineral, California · 16248 days ago · 3 km deep · 18 km away
  12. 1.614 km NNE of Mineral, California · 16248 days ago · 0 km deep · 17 km away
  13. 1.814 km S of Round Mountain, California · 16248 days ago · 3 km deep · 60 km away
  14. 2.38 km NW of Plumas Eureka (historical), California · 16249 days ago · 1 km deep · 79 km away
  15. 1.915 km NNE of Mineral, California · 16250 days ago · 0 km deep · 16 km away
  16. 1.816 km NE of Mineral, California · 16250 days ago · 2 km deep · 16 km away
  17. 1.716 km NE of Mineral, California · 16250 days ago · 3 km deep · 16 km away
  18. 1.93 km SE of Greenhorn, California · 16251 days ago · 5 km deep · 76 km away
  19. 1.819 km W of Old Station, California · 16254 days ago · 2 km deep · 41 km away
  20. 1.67 km WNW of Chester, California · 16255 days ago · 3 km deep · 5 km away

Earthquakes todayCalifornia earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1073611. Read Tue, Sep 22, 2026, 10:31 PM UTC.