California earthquakes

M2.0 earthquake 9 km N of Upper Lake, California

A magnitude 2.0 earthquake struck 9 km N of Upper Lake, California on Fri, Apr 5, 1985, 11:05 PM PST (07:05 UTC), 4 km (2 mi) below the surface.

A larger quake followed: M2.8 8 km NNE of Arbuckle, 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
2.0 (md), micro
Local time
UTC
1985-04-06 07:05:06 UTC
Depth
3.6 km (2.2 mi), shallow
Epicenter
39.248° N, 122.897° 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 0.2 km horizontally, 1.3 km in depth
Magnitude uncertainty
±0.23
Depth from
From location
Station coverage gap
55°
Stations used
25

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 184 in the 60 days after this one and 0 in the 30 days before it.

After

  1. 2.88 km NNE of Arbuckle, California · 15131 days ago · 3 km deep · 78 km away
  2. 1.710 km ESE of Covelo, California · 15130 days ago · 1 km deep · 61 km away
  3. 2.322 km WSW of Williams, California · 15130 days ago · 3 km deep · 47 km away
  4. 1.57 km W of Cobb, California · 15130 days ago · 1 km deep · 47 km away
  5. 1.66 km W of Cobb, California · 15129 days ago · 3 km deep · 48 km away
  6. 1.68 km WSW of Cobb, California · 15129 days ago · 3 km deep · 50 km away
  7. 2.58 km WSW of Meridian, California · 15129 days ago · 12 km deep · 78 km away
  8. 1.64 km SW of Hopland, California · 15129 days ago · 5 km deep · 40 km away
  9. 2.513 km NNE of Laytonville, California · 15129 days ago · 10 km deep · 75 km away
  10. 2.37 km WSW of Cobb, California · 15128 days ago · 4 km deep · 51 km away
  11. 1.66 km W of Cobb, California · 15128 days ago · 1 km deep · 49 km away
  12. 1.78 km WSW of Cobb, California · 15127 days ago · 3 km deep · 50 km away
  13. 1.85 km NNW of Geyserville, California · 15127 days ago · 5 km deep · 55 km away
  14. 1.813 km SE of Laytonville, California · 15125 days ago · 10 km deep · 57 km away
  15. 1.97 km WSW of Cobb, California · 15125 days ago · 2 km deep · 50 km away
  16. 1.97 km WSW of Cobb, California · 15125 days ago · 1 km deep · 50 km away
  17. 2.16 km W of Cobb, California · 15124 days ago · 3 km deep · 49 km away
  18. 2.06 km W of Cobb, California · 15124 days ago · 3 km deep · 49 km away
  19. 2.28 km WSW of Cobb, California · 15123 days ago · 3 km deep · 50 km away
  20. 1.76 km NE of Brooktrails, California · 15123 days ago · 6 km deep · 45 km away
  21. 1.7Northern California · 15122 days ago · 2 km deep · 51 km away
  22. 2.1Northern California · 15122 days ago · 2 km deep · 78 km away
  23. 2.74 km W of Cobb, California · 15122 days ago · 0 km deep · 48 km away
  24. 1.66 km W of Cobb, California · 15122 days ago · -1 km deep · 47 km away
  25. 1.66 km W of Cobb, California · 15122 days ago · -1 km deep · 47 km away
  26. 1.69 km W of Cobb, California · 15122 days ago · 1 km deep · 49 km away
  27. 1.59 km W of Cobb, California · 15122 days ago · 1 km deep · 49 km away
  28. 1.77 km WSW of Cobb, California · 15122 days ago · 1 km deep · 50 km away
  29. 2.45 km SW of Cobb, California · 15121 days ago · 0 km deep · 52 km away
  30. 2.06 km WNW of Guinda, California · 15121 days ago · 3 km deep · 70 km away
  31. 1.85 km SW of Cobb, California · 15121 days ago · 2 km deep · 52 km away
  32. 1.77 km WSW of Cobb, California · 15121 days ago · 1 km deep · 50 km away
  33. 2.55 km WSW of Cobb, California · 15120 days ago · 3 km deep · 52 km away
  34. 2.57 km SW of Meridian, California · 15120 days ago · 10 km deep · 80 km away
  35. 2.16 km W of Cobb, California · 15120 days ago · 3 km deep · 48 km away
  36. 1.77 km W of Cobb, California · 15119 days ago · 1 km deep · 49 km away
  37. 1.85 km ESE of Willits, California · 15119 days ago · 0 km deep · 38 km away
  38. 2.321 km WSW of Williams, California · 15119 days ago · 0 km deep · 47 km away
  39. 1.85 km W of Angwin, California · 15117 days ago · 8 km deep · 81 km away
  40. 1.86 km W of Cobb, California · 15117 days ago · -1 km deep · 48 km away
  41. 2.15 km SSW of Cobb, California · 15116 days ago · 1 km deep · 53 km away
  42. 1.712 km WNW of Cobb, California · 15116 days ago · 1 km deep · 44 km away
  43. 2.231 km WSW of Paskenta, California · 15116 days ago · 9 km deep · 58 km away
  44. 1.610 km NW of Cobb, California · 15115 days ago · 2 km deep · 42 km away
  45. 1.67 km W of Cobb, California · 15115 days ago · 3 km deep · 49 km away
  46. 1.6Northern California · 15114 days ago · 3 km deep · 48 km away
  47. 1.54 km S of Cobb, California · 15114 days ago · 2 km deep · 54 km away
  48. 1.88 km W of Cobb, California · 15113 days ago · 1 km deep · 48 km away
  49. 1.68 km W of Cobb, California · 15113 days ago · 1 km deep · 48 km away
  50. 1.86 km W of Cobb, California · 15112 days ago · 0 km deep · 48 km away
  51. 2.36 km W of Cobb, California · 15112 days ago · 0 km deep · 48 km away
  52. 1.56 km W of Cobb, California · 15112 days ago · 0 km deep · 47 km away
  53. 1.69 km WSW of Cobb, California · 15111 days ago · 2 km deep · 50 km away
  54. 1.57 km WSW of Cobb, California · 15111 days ago · 2 km deep · 50 km away
  55. 1.55 km SW of Cobb, California · 15110 days ago · 0 km deep · 53 km away
  56. 2.36 km W of Cobb, California · 15110 days ago · 2 km deep · 49 km away
  57. 2.27 km W of Cobb, California · 15110 days ago · 2 km deep · 49 km away
  58. 2.14 km WSW of Cobb, California · 15110 days ago · 1 km deep · 51 km away
  59. 2.86 km WSW of Cobb, California · 15109 days ago · 0 km deep · 51 km away
  60. 2.27 km WSW of Cobb, California · 15109 days ago · 1 km deep · 50 km away

The first 60 of 184.

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc45471. Read Tue, Sep 22, 2026, 10:24 PM UTC.