California earthquakes

M1.6 earthquake 9 km WNW of Anderson, California

A magnitude 1.6 earthquake struck 9 km WNW of Anderson, California on Wed, Sep 4, 1985, 3:16 AM PDT (10:16 UTC), 6 km (4 mi) below the surface.

A larger quake followed: M2.5 9 km SSW of Hyampom, California. This one was a foreshock.

Anderson 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
1.6 (md), micro
Local time
UTC
1985-09-04 10:16:37 UTC
Depth
5.9 km (3.6 mi), shallow
Epicenter
40.487° N, 122.403° 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 1.1 km horizontally, 2.3 km in depth
Magnitude uncertainty
±0.08
Depth from
From location
Station coverage gap
242°, 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: 41 in the 60 days after this one and 12 in the 30 days before it.

After

  1. 2.59 km SSW of Hyampom, California · 14993 days ago · 5 km deep · 94 km away
  2. 2.114 km NNE of Mineral, California · 14993 days ago · 2 km deep · 72 km away
  3. 2.613 km NNE of Mineral, California · 14993 days ago · 2 km deep · 72 km away
  4. 1.613 km NNE of Mineral, California · 14993 days ago · 2 km deep · 72 km away
  5. 1.613 km NNE of Mineral, California · 14993 days ago · 2 km deep · 72 km away
  6. 1.74 km SE of Montgomery Creek, California · 14989 days ago · 17 km deep · 57 km away
  7. 1.721 km SW of Edgewood, California · 14988 days ago · 4 km deep · 93 km away
  8. 2.32 km NE of Anderson, California · 14987 days ago · 61 km deep · 11 km away
  9. 2.214 km SW of Trinity Center, California · 14986 days ago · 8 km deep · 58 km away
  10. 2.27 km SE of Millville, California · 14985 days ago · 19 km deep · 25 km away
  11. 1.713 km SE of Millville, California · 14984 days ago · 4 km deep · 29 km away
  12. 1.619 km NNE of Shingletown, California · 14983 days ago · 13 km deep · 56 km away
  13. 2.37 km SSE of Trinity Center, California · 14978 days ago · 4 km deep · 53 km away
  14. 2.010 km NW of Cohasset, California · 14973 days ago · 5 km deep · 75 km away
  15. 2.312 km NE of Vina, California · 14972 days ago · 0 km deep · 67 km away
  16. 1.52 km ESE of Paynes Creek, California · 14968 days ago · 9 km deep · 47 km away
  17. 1.813 km N of French Gulch, California · 14967 days ago · 40 km deep · 42 km away
  18. 3.329 km SE of Ruth, California · 14966 days ago · 42 km deep · 69 km away
  19. 2.19 km NE of Vina, California · 14966 days ago · 0 km deep · 66 km away
  20. 2.115 km SE of McCloud, California · 14965 days ago · 11 km deep · 81 km away
  21. 2.27 km NE of Redding, California · 14963 days ago · 29 km deep · 17 km away
  22. 1.714 km W of Ruth, California · 14958 days ago · -1 km deep · 95 km away
  23. 2.98 km N of Old Station, California · 14958 days ago · 7 km deep · 87 km away
  24. 1.814 km WNW of Cohasset, California · 14958 days ago · 5 km deep · 71 km away
  25. 1.56 km N of Old Station, California · 14955 days ago · 16 km deep · 87 km away
  26. 2.610 km ENE of Artois, California · 14955 days ago · 22 km deep · 98 km away
  27. 1.631 km WNW of Paskenta, California · 14954 days ago · 10 km deep · 64 km away
  28. 2.26 km W of Mineral, California · 14953 days ago · 2 km deep · 63 km away
  29. 3.09 km WNW of Chester, California · 14948 days ago · 0 km deep · 92 km away
  30. 1.514 km NNE of Mineral, California · 14947 days ago · 12 km deep · 75 km away
  31. 1.614 km NNW of Mineral, California · 14947 days ago · 4 km deep · 64 km away
  32. 1.59 km NW of Chester, California · 14947 days ago · 8 km deep · 94 km away
  33. 2.410 km SSE of Hamilton City, California · 14943 days ago · 21 km deep · 100 km away
  34. 1.99 km NNW of Cassel, California · 14942 days ago · 16 km deep · 88 km away
  35. 2.34 km WSW of Chico, California · 14942 days ago · 22 km deep · 97 km away
  36. 2.127 km E of Ruth, California · 14938 days ago · 25 km deep · 56 km away
  37. 1.913 km E of Mineral, California · 14938 days ago · 3 km deep · 83 km away
  38. 1.712 km SSW of Old Station, California · 14938 days ago · 3 km deep · 77 km away
  39. 2.61 km ESE of Lakehead, California · 14936 days ago · 19 km deep · 46 km away
  40. 2.05 km SSE of Red Bluff, California · 14935 days ago · 6 km deep · 43 km away
  41. 2.81 km ENE of Lakehead, California · 14935 days ago · 18 km deep · 48 km away

Before

  1. 1.813 km ESE of Mineral, California · 14994 days ago · 8 km deep · 83 km away
  2. 1.99 km NNW of Old Station, California · 15002 days ago · 6 km deep · 83 km away
  3. 1.99 km WNW of Cohasset, California · 15006 days ago · 16 km deep · 76 km away
  4. 1.96km ESE of Millville, CA · 15006 days ago · 17 km deep · 25 km away
  5. 2.08 km NE of Vina, California · 15012 days ago · 1 km deep · 66 km away
  6. 2.39 km SE of Rancho Tehama Reserve, California · 15016 days ago · 5 km deep · 59 km away
  7. 2.18km NNW of French Gulch, CA · 15016 days ago · 19 km deep · 39 km away
  8. 1.84 km S of Hamilton City, California · 15016 days ago · 5 km deep · 93 km away
  9. 1.512 km E of Paynes Creek, California · 15019 days ago · 11 km deep · 56 km away
  10. 1.611 km WNW of Burney, California · 15020 days ago · 4 km deep · 73 km away
  11. 2.015 km SW of Paskenta, California · 15021 days ago · 6 km deep · 80 km away
  12. 3.725 km NNW of Junction City, California · 15022 days ago · 28 km deep · 83 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc55359. Read Tue, Sep 22, 2026, 9:40 PM UTC.