California earthquakes

M1.7 earthquake 15 km N of Chester, California

A magnitude 1.7 earthquake struck 15 km N of Chester, California on Mon, Dec 27, 1982, 12:06 AM PST (08:06 UTC), 3 km (2 mi) below the surface.

A larger quake followed: M1.8 17 km NE 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.

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The earthquake

Magnitude
1.7 (md), micro
Local time
UTC
1982-12-27 08:06:56 UTC
Depth
2.6 km (1.6 mi), shallow
Epicenter
40.442° N, 121.230° 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 1.6 km horizontally, 0.6 km in depth
Magnitude uncertainty
±0.10
Depth from
From location
Station coverage gap
288°, poorly surrounded by stations
Stations used
7

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 20 in the 60 days after this one and 7 in the 30 days before it.

After

  1. 1.63 km WSW of Paradise, California · 15974 days ago · 18 km deep · 86 km away
  2. 1.817 km NE of Mineral, California · 15973 days ago · 10 km deep · 20 km away
  3. 2.311 km S of Old Station, California · 15969 days ago · -2 km deep · 22 km away
  4. 1.85 km N of Little Grass Valley, California · 15968 days ago · 5 km deep · 78 km away
  5. 2.86 km NNW of Cassel, California · 15966 days ago · 6 km deep · 66 km away
  6. 2.27 km N of Cassel, California · 15966 days ago · 4 km deep · 66 km away
  7. 2.513 km NE of Butte Meadows, California · 15965 days ago · 7 km deep · 35 km away
  8. 1.727 km ENE of Old Station, California · 15962 days ago · 9 km deep · 37 km away
  9. 1.513 km NW of Chester, California · 15960 days ago · 3 km deep · 12 km away
  10. 1.712 km ENE of Mineral, California · 15959 days ago · 7 km deep · 21 km away
  11. 1.912 km ENE of Bend, California · 15959 days ago · 7 km deep · 73 km away
  12. 1.811 km SE of Millville, California · 15947 days ago · 1 km deep · 72 km away
  13. 2.210 km NNW of Burney, California · 15944 days ago · 7 km deep · 71 km away
  14. 2.0Northern California · 15940 days ago · 4 km deep · 45 km away
  15. 2.54 km SSE of Canyondam, California · 15935 days ago · 5 km deep · 38 km away
  16. 1.81 km SSE of Twain, California · 15928 days ago · 3 km deep · 50 km away
  17. 1.91 km SSW of Twain, California · 15928 days ago · 3 km deep · 50 km away
  18. 2.01 km N of Keddie, California · 15928 days ago · 4 km deep · 51 km away
  19. 2.018 km SW of Old Station, California · 15920 days ago · 0 km deep · 30 km away
  20. 1.83 km N of Lake Almanor West, California · 15916 days ago · 3 km deep · 20 km away

Before

  1. 1.914 km SW of Lake Almanor West, California · 15977 days ago · 8 km deep · 35 km away
  2. 2.311 km NW of Burney, California · 15982 days ago · 5 km deep · 72 km away
  3. 1.77 km WNW of Tobin, California · 15983 days ago · 7 km deep · 55 km away
  4. 1.616 km WSW of Old Station, California · 15996 days ago · 9 km deep · 39 km away
  5. 1.9Northern California · 15998 days ago · 4 km deep · 4 km away
  6. 2.44 km SSW of Greenville, California · 16001 days ago · 16 km deep · 43 km away
  7. 2.712 km NE of Bend, California · 16005 days ago · -1 km deep · 75 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1083556. Read Tue, Sep 22, 2026, 5:04 PM UTC.