California earthquakes

M2.2 earthquake 21 km WSW of Williams, California

A magnitude 2.2 earthquake struck 21 km WSW of Williams, California on Wed, Apr 17, 1985, 10:57 PM PST (06:57 UTC), 0 km (0 mi) below the surface.

A larger quake followed: M3.7 10 km WSW of Meridian, 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
2.2 (md), micro
Local time
UTC
1985-04-18 06:57:31 UTC
Depth
0.1 km (0.1 mi), shallow
Epicenter
39.095° N, 122.389° 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 0.3 km horizontally, 5.2 km in depth
Magnitude uncertainty
±0.22
Depth from
From location
Station coverage gap
202°, poorly surrounded by stations
Stations used
15

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 183 in the 60 days after this one and 127 in the 30 days before it.

After

  1. 3.710 km WSW of Meridian, California · 15137 days ago · 18 km deep · 31 km away
  2. 2.29 km WSW of Meridian, California · 15137 days ago · 12 km deep · 32 km away
  3. 1.67 km WSW of Cobb, California · 15137 days ago · 0 km deep · 48 km away
  4. 1.611 km W of Cobb, California · 15136 days ago · -1 km deep · 51 km away
  5. 1.77 km W of Cobb, California · 15136 days ago · 0 km deep · 48 km away
  6. 2.57 km W of Cobb, California · 15136 days ago · 1 km deep · 48 km away
  7. 2.57 km W of Cobb, California · 15136 days ago · 1 km deep · 47 km away
  8. 1.67 km W of Cobb, California · 15136 days ago · 1 km deep · 47 km away
  9. 2.57 km W of Cobb, California · 15136 days ago · 1 km deep · 48 km away
  10. 2.014 km N of Upper Lake, California · 15136 days ago · 5 km deep · 51 km away
  11. 2.88 km NNE of Arbuckle, California · 15135 days ago · 3 km deep · 32 km away
  12. 1.710 km ESE of Covelo, California · 15135 days ago · 1 km deep · 98 km away
  13. 2.322 km WSW of Williams, California · 15135 days ago · 3 km deep · 1 km away
  14. 1.57 km W of Cobb, California · 15135 days ago · 1 km deep · 47 km away
  15. 1.66 km W of Cobb, California · 15134 days ago · 3 km deep · 46 km away
  16. 1.68 km WSW of Cobb, California · 15134 days ago · 3 km deep · 49 km away
  17. 2.41 km SSW of Green Valley, California · 15134 days ago · 12 km deep · 97 km away
  18. 2.02 km S of Green Valley, California · 15134 days ago · 11 km deep · 98 km away
  19. 2.58 km WSW of Meridian, California · 15134 days ago · 12 km deep · 33 km away
  20. 1.64 km SW of Hopland, California · 15134 days ago · 5 km deep · 68 km away
  21. 2.37 km WSW of Cobb, California · 15133 days ago · 4 km deep · 49 km away
  22. 1.66 km W of Cobb, California · 15132 days ago · 1 km deep · 47 km away
  23. 1.78 km WSW of Cobb, California · 15132 days ago · 3 km deep · 49 km away
  24. 1.85 km NNW of Geyserville, California · 15132 days ago · 5 km deep · 60 km away
  25. 1.97 km WSW of Cobb, California · 15130 days ago · 2 km deep · 49 km away
  26. 1.97 km WSW of Cobb, California · 15129 days ago · 1 km deep · 48 km away
  27. 2.16 km W of Cobb, California · 15128 days ago · 3 km deep · 47 km away
  28. 2.06 km W of Cobb, California · 15128 days ago · 3 km deep · 47 km away
  29. 2.28 km WSW of Cobb, California · 15128 days ago · 3 km deep · 49 km away
  30. 1.76 km NE of Brooktrails, California · 15128 days ago · 6 km deep · 92 km away
  31. 1.7Northern California · 15127 days ago · 2 km deep · 48 km away
  32. 2.1Northern California · 15127 days ago · 2 km deep · 69 km away
  33. 2.74 km W of Cobb, California · 15127 days ago · 0 km deep · 45 km away
  34. 1.66 km W of Cobb, California · 15127 days ago · -1 km deep · 46 km away
  35. 1.66 km W of Cobb, California · 15127 days ago · -1 km deep · 46 km away
  36. 1.69 km W of Cobb, California · 15126 days ago · 1 km deep · 50 km away
  37. 1.59 km W of Cobb, California · 15126 days ago · 1 km deep · 50 km away
  38. 1.77 km WSW of Cobb, California · 15126 days ago · 1 km deep · 48 km away
  39. 2.45 km SW of Cobb, California · 15126 days ago · 0 km deep · 48 km away
  40. 2.06 km WNW of Guinda, California · 15126 days ago · 3 km deep · 29 km away
  41. 1.85 km SW of Cobb, California · 15126 days ago · 2 km deep · 48 km away
  42. 1.77 km WSW of Cobb, California · 15126 days ago · 1 km deep · 48 km away
  43. 2.55 km WSW of Cobb, California · 15125 days ago · 3 km deep · 47 km away
  44. 2.57 km SW of Meridian, California · 15125 days ago · 10 km deep · 34 km away
  45. 2.16 km W of Cobb, California · 15125 days ago · 3 km deep · 47 km away
  46. 1.77 km W of Cobb, California · 15124 days ago · 1 km deep · 48 km away
  47. 1.85 km ESE of Willits, California · 15124 days ago · 0 km deep · 85 km away
  48. 2.321 km WSW of Williams, California · 15124 days ago · 0 km deep · 0 km away
  49. 1.85 km W of Angwin, California · 15122 days ago · 8 km deep · 58 km away
  50. 1.86 km W of Cobb, California · 15121 days ago · -1 km deep · 46 km away
  51. 2.15 km SSW of Cobb, California · 15121 days ago · 1 km deep · 47 km away
  52. 1.712 km WNW of Cobb, California · 15121 days ago · 1 km deep · 48 km away
  53. 2.231 km WSW of Paskenta, California · 15121 days ago · 9 km deep · 86 km away
  54. 1.610 km NW of Cobb, California · 15120 days ago · 2 km deep · 45 km away
  55. 1.67 km W of Cobb, California · 15119 days ago · 3 km deep · 48 km away
  56. 1.6Northern California · 15119 days ago · 3 km deep · 47 km away
  57. 1.54 km S of Cobb, California · 15119 days ago · 2 km deep · 45 km away
  58. 1.88 km W of Cobb, California · 15118 days ago · 1 km deep · 48 km away
  59. 1.68 km W of Cobb, California · 15118 days ago · 1 km deep · 48 km away
  60. 1.86 km W of Cobb, California · 15117 days ago · 0 km deep · 47 km away

The first 60 of 183.

Before

  1. 2.07 km W of Cobb, California · 15137 days ago · 1 km deep · 47 km away
  2. 2.17 km NNW of Richvale, California · 15138 days ago · 5 km deep · 73 km away
  3. 2.0Northern California · 15138 days ago · 1 km deep · 46 km away
  4. 2.38 km WSW of Cobb, California · 15139 days ago · 3 km deep · 49 km away
  5. 1.918 km NE of Upper Lake, California · 15140 days ago · 7 km deep · 40 km away
  6. 2.28 km WSW of Cobb, California · 15140 days ago · 0 km deep · 49 km away
  7. 2.47 km WNW of Guinda, California · 15140 days ago · 1 km deep · 28 km away
  8. 2.58 km WNW of Guinda, California · 15141 days ago · 2 km deep · 28 km away
  9. 2.08 km WSW of Cobb, California · 15141 days ago · 3 km deep · 49 km away
  10. 2.0Northern California · 15141 days ago · 1 km deep · 48 km away
  11. 2.23 km SW of Cobb, California · 15141 days ago · 1 km deep · 46 km away
  12. 1.75 km W of Cobb, California · 15141 days ago · 4 km deep · 46 km away
  13. 1.67 km WSW of Cobb, California · 15142 days ago · 3 km deep · 49 km away
  14. 1.61 km S of Cotati, California · 15142 days ago · 17 km deep · 91 km away
  15. 2.55 km SW of Cobb, California · 15142 days ago · 1 km deep · 47 km away
  16. 3.45 km SW of Cobb, California · 15142 days ago · 1 km deep · 47 km away
  17. 2.57 km WSW of Cobb, California · 15143 days ago · 1 km deep · 49 km away
  18. 2.67 km WSW of Cobb, California · 15143 days ago · 1 km deep · 49 km away
  19. 2.29 km WSW of Cobb, California · 15145 days ago · 1 km deep · 50 km away
  20. 2.24 km SW of Cobb, California · 15145 days ago · 1 km deep · 47 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc46314. Read Sun, Sep 27, 2026, 4:38 PM UTC.