California earthquakes

M1.9 earthquake 6 km ESE of Redding, California

A magnitude 1.9 earthquake struck 6 km ESE of Redding, California on Wed, Apr 20, 1983, 4:39 PM PST (00:39 UTC), 18 km (11 mi) below the surface.

A larger quake followed: M3.6 10 km W of Manton, 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
1.9 (md), micro
Local time
UTC
1983-04-21 00:39:55 UTC
Depth
18.1 km (11.2 mi), shallow
Epicenter
40.557° N, 122.325° 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, 1.8 km in depth
Magnitude uncertainty
±0.12
Depth from
From location
Station coverage gap
134°
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: 25 in the 60 days after this one and 18 in the 30 days before it.

After

  1. 1.713 km N of Burney, California · 15868 days ago · 4 km deep · 74 km away
  2. 2.524 km ENE of McCloud, California · 15867 days ago · 26 km deep · 96 km away
  3. 3.610 km W of Manton, California · 15866 days ago · 2 km deep · 31 km away
  4. 2.79 km NW of Hamilton City, California · 15864 days ago · 35 km deep · 85 km away
  5. 1.617 km ESE of McCloud, California · 15863 days ago · 3 km deep · 79 km away
  6. 2.05 km SSE of Hamilton City, California · 15861 days ago · 12 km deep · 100 km away
  7. 1.93 km NW of Lakehead, California · 15860 days ago · 12 km deep · 42 km away
  8. 2.032 km WNW of Paskenta, California · 15858 days ago · 14 km deep · 84 km away
  9. 1.814 km NNE of Mineral, California · 15845 days ago · 3 km deep · 67 km away
  10. 2.64 km W of Butte Meadows, California · 15842 days ago · 1 km deep · 81 km away
  11. 2.014 km NNE of Mineral, California · 15841 days ago · 17 km deep · 66 km away
  12. 1.734 km SW of Shasta, California · 15838 days ago · 4 km deep · 42 km away
  13. 2.1Northern California · 15837 days ago · 18 km deep · 59 km away
  14. 2.01 km WSW of Central Valley (historical), California · 15832 days ago · 30 km deep · 14 km away
  15. 1.913 km NNW of Belden, California · 15829 days ago · 4 km deep · 99 km away
  16. 2.24 km ENE of Keswick, California · 15829 days ago · 25 km deep · 13 km away
  17. 2.515 km NNE of Mineral, California · 15821 days ago · 2 km deep · 69 km away
  18. 1.615 km NNE of Mineral, California · 15821 days ago · 2 km deep · 69 km away
  19. 2.829 km ESE of Ruth, California · 15818 days ago · 42 km deep · 74 km away
  20. 2.428 km ESE of Ruth, California · 15818 days ago · 40 km deep · 77 km away
  21. 2.42 km WNW of Nord, California · 15817 days ago · 18 km deep · 91 km away
  22. 2.131 km ENE of Covelo, California · 15817 days ago · 9 km deep · 89 km away
  23. 1.714 km NNE of Mineral, California · 15814 days ago · 5 km deep · 67 km away
  24. 1.810 km ENE of Shingletown, California · 15812 days ago · 3 km deep · 46 km away
  25. 2.110 km SE of Millville, California · 15812 days ago · 15 km deep · 22 km away

Before

  1. 1.66 km NE of Mad River, California · 15872 days ago · -1 km deep · 96 km away
  2. 2.34 km WNW of Nord, California · 15879 days ago · 11 km deep · 89 km away
  3. 2.13 km NNW of Lake Almanor West, California · 15880 days ago · 4 km deep · 99 km away
  4. 1.911 km S of Mineral, California · 15880 days ago · -1 km deep · 72 km away
  5. 1.813 km SSW of Mineral, California · 15881 days ago · -1 km deep · 69 km away
  6. 2.019 km ESE of McCloud, California · 15882 days ago · 15 km deep · 80 km away
  7. 1.85 km WSW of Butte Meadows, California · 15883 days ago · 4 km deep · 82 km away
  8. 1.58 km SSE of Mineral, California · 15883 days ago · 2 km deep · 72 km away
  9. 2.211 km N of Lakehead, California · 15884 days ago · 9 km deep · 50 km away
  10. 1.70 km SSW of Lakehead, California · 15884 days ago · 7 km deep · 38 km away
  11. 3.126 km W of Paskenta, California · 15886 days ago · -1 km deep · 83 km away
  12. 2.18 km SE of Burnt Ranch, California · 15893 days ago · 39 km deep · 93 km away
  13. 1.715 km WSW of Chester, California · 15897 days ago · 1 km deep · 86 km away
  14. 3.129 km NNW of Junction City, California · 15897 days ago · 30 km deep · 85 km away
  15. 2.011 km NE of Ruth, California · 15897 days ago · 16 km deep · 80 km away
  16. 2.610 km ENE of Ruth, California · 15897 days ago · 36 km deep · 80 km away
  17. 2.114 km E of Bella Vista, California · 15898 days ago · 8 km deep · 25 km away
  18. 1.511 km W of Hayfork, California · 15898 days ago · 4 km deep · 84 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1090664. Read Wed, Sep 30, 2026, 8:16 AM UTC.