California earthquakes

M2.1 earthquake 6 km E of Williams, California

A magnitude 2.1 earthquake struck 6 km E of Williams, California on Fri, May 31, 1985, 12:54 AM PDT (07:54 UTC), 22 km (14 mi) below the surface.

A larger quake followed: M4.3 12 km WSW of Kelseyville, California. This one was a foreshock.

Williams 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
2.1 (md), micro
Local time
UTC
1985-05-31 07:54:03 UTC
Depth
22.5 km (14.0 mi), shallow
Epicenter
39.146° N, 122.070° 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, 1.9 km in depth
Magnitude uncertainty
±0.11
Depth from
From location
Station coverage gap
139°
Stations used
14

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 180 in the 60 days after this one and 114 in the 30 days before it.

After

  1. 2.810 km NNE of Arbuckle, California · 15096 days ago · 9 km deep · 6 km away
  2. 3.69 km ESE of Williams, California · 15096 days ago · 13 km deep · 4 km away
  3. 2.39 km SSW of Colusa, California · 15096 days ago · 16 km deep · 4 km away
  4. 1.86 km SSW of Colusa, California · 15096 days ago · 5 km deep · 4 km away
  5. 3.5Northern California · 15096 days ago · 23 km deep · 4 km away
  6. 1.84 km SSW of Dunnigan, California · 15096 days ago · 5 km deep · 34 km away
  7. 2.28 km NNE of Arbuckle, California · 15096 days ago · 4 km deep · 8 km away
  8. 1.96 km W of Meridian, California · 15096 days ago · 5 km deep · 7 km away
  9. 1.67 km SSW of Colusa, California · 15095 days ago · 5 km deep · 2 km away
  10. 1.88 km W of Cobb, California · 15095 days ago · 1 km deep · 74 km away
  11. 2.48 km W of Cobb, California · 15095 days ago · 1 km deep · 74 km away
  12. 2.610 km WSW of Cobb, California · 15095 days ago · 2 km deep · 77 km away
  13. 1.77 km NE of Clearlake, California · 15095 days ago · 1 km deep · 45 km away
  14. 1.87 km W of Cobb, California · 15094 days ago · 0 km deep · 74 km away
  15. 1.65 km W of Lower Lake, California · 15094 days ago · 4 km deep · 59 km away
  16. 1.86 km W of Lower Lake, California · 15094 days ago · 4 km deep · 59 km away
  17. 1.65km WNW of Lakeport, CA · 15094 days ago · 24 km deep · 78 km away
  18. 1.78 km W of Cobb, California · 15094 days ago · 0 km deep · 74 km away
  19. 2.07 km WNW of Arbuckle, California · 15094 days ago · 4 km deep · 13 km away
  20. 2.210 km NNE of Hopland, California · 15093 days ago · 5 km deep · 86 km away
  21. 2.010 km NNE of Hopland, California · 15093 days ago · 5 km deep · 87 km away
  22. 2.44 km S of Oroville East, California · 15093 days ago · 2 km deep · 62 km away
  23. 2.27 km W of Cobb, California · 15093 days ago · 0 km deep · 74 km away
  24. 1.66 km W of Cobb, California · 15092 days ago · 4 km deep · 72 km away
  25. 1.722 km NE of Potter Valley, California · 15092 days ago · 7 km deep · 82 km away
  26. 1.65 km SW of Cobb, California · 15092 days ago · 1 km deep · 72 km away
  27. 1.89 km S of Hopland, California · 15092 days ago · 5 km deep · 97 km away
  28. 2.24 km SW of Cobb, California · 15092 days ago · 1 km deep · 72 km away
  29. 2.38 km E of Williams, California · 15091 days ago · 17 km deep · 2 km away
  30. 1.66 km WSW of Cobb, California · 15091 days ago · 1 km deep · 73 km away
  31. 2.014 km N of Upper Lake, California · 15091 days ago · -1 km deep · 76 km away
  32. 1.76 km W of Cobb, California · 15091 days ago · 3 km deep · 73 km away
  33. 1.75 km WSW of Cobb, California · 15090 days ago · 0 km deep · 73 km away
  34. 1.68 km WSW of Cobb, California · 15090 days ago · 3 km deep · 75 km away
  35. 2.07 km NNE of Arbuckle, California · 15090 days ago · 8 km deep · 8 km away
  36. 1.65 km NE of College City, California · 15090 days ago · 4 km deep · 15 km away
  37. 1.79 km NW of Cobb, California · 15090 days ago · 1 km deep · 71 km away
  38. 2.09 km ESE of Williams, California · 15089 days ago · 5 km deep · 3 km away
  39. 2.26 km W of Cobb, California · 15089 days ago · 2 km deep · 73 km away
  40. 1.66 km W of Cobb, California · 15089 days ago · 2 km deep · 73 km away
  41. 1.66 km W of Cobb, California · 15089 days ago · 0 km deep · 73 km away
  42. 1.98 km W of Cobb, California · 15089 days ago · 0 km deep · 74 km away
  43. 1.910 km N of Arbuckle, California · 15088 days ago · 7 km deep · 5 km away
  44. 1.56 km W of Cobb, California · 15088 days ago · 3 km deep · 73 km away
  45. 1.85 km SW of Cobb, California · 15087 days ago · 0 km deep · 73 km away
  46. 1.75 km SW of Cobb, California · 15086 days ago · 1 km deep · 73 km away
  47. 1.67 km WSW of Cobb, California · 15086 days ago · 1 km deep · 74 km away
  48. 1.65 km W of Cobb, California · 15085 days ago · 1 km deep · 71 km away
  49. 1.66 km W of Cobb, California · 15085 days ago · 2 km deep · 73 km away
  50. 1.67 km NNE of Hopland, California · 15085 days ago · 0 km deep · 88 km away
  51. 2.3Northern California · 15084 days ago · 5 km deep · 96 km away
  52. 2.310 km NE of Vina, California · 15084 days ago · -1 km deep · 95 km away
  53. 3.16 km W of Cobb, California · 15084 days ago · 1 km deep · 73 km away
  54. 1.56 km W of Cobb, California · 15084 days ago · 1 km deep · 73 km away
  55. 2.2Northern California · 15084 days ago · 18 km deep · 2 km away
  56. 1.73 km NNW of Hamilton City, California · 15083 days ago · 10 km deep · 69 km away
  57. 1.76 km WSW of Colusa, California · 15083 days ago · 13 km deep · 5 km away
  58. 1.68 km SW of Clear Lake Riviera, California · 15083 days ago · 2 km deep · 67 km away
  59. 2.218 km WSW of Esparto, California · 15083 days ago · 6 km deep · 58 km away
  60. 1.87 km W of Cobb, California · 15082 days ago · 1 km deep · 73 km away

The first 60 of 180.

Before

  1. 2.6Northern California · 15097 days ago · 1 km deep · 75 km away
  2. 2.510 km ESE of Williams, California · 15097 days ago · 18 km deep · 4 km away
  3. 2.19 km WSW of Meridian, California · 15097 days ago · 5 km deep · 7 km away
  4. 2.17 km W of Cobb, California · 15097 days ago · 3 km deep · 74 km away
  5. 1.85 km W of Cobb, California · 15098 days ago · 1 km deep · 72 km away
  6. 1.71 km NNE of Talmage, California · 15098 days ago · 4 km deep · 94 km away
  7. 1.612 km ENE of Upper Lake, California · 15098 days ago · 9 km deep · 62 km away
  8. 2.08 km WSW of Cobb, California · 15099 days ago · 0 km deep · 75 km away
  9. 2.67 km WSW of Cobb, California · 15099 days ago · 0 km deep · 75 km away
  10. 2.23 km SW of Cobb, California · 15099 days ago · 2 km deep · 70 km away
  11. 2.08 km N of Cloverdale, California · 15099 days ago · 3 km deep · 87 km away
  12. 2.64 km W of Meridian, California · 15100 days ago · 6 km deep · 9 km away
  13. 1.57 km W of Cobb, California · 15101 days ago · 3 km deep · 73 km away
  14. 1.57 km WSW of Cobb, California · 15101 days ago · 2 km deep · 74 km away
  15. 2.46 km W of Cobb, California · 15101 days ago · 3 km deep · 73 km away
  16. 1.53 km NNE of Santa Rosa, California · 15101 days ago · 3 km deep · 93 km away
  17. 1.85 km SW of Cobb, California · 15101 days ago · 0 km deep · 72 km away
  18. 2.25 km SW of Cobb, California · 15101 days ago · 0 km deep · 72 km away
  19. 1.65 km SW of Cobb, California · 15101 days ago · 1 km deep · 72 km away
  20. 1.713 km SE of Hidden Valley Lake, California · 15101 days ago · 3 km deep · 55 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc49318. Read Tue, Sep 29, 2026, 9:23 PM UTC.