California earthquakes

M1.6 earthquake 12 km ENE of Upper Lake, California

A magnitude 1.6 earthquake struck 12 km ENE of Upper Lake, California on Wed, May 29, 1985, 4:47 PM PDT (23:47 UTC), 9 km (5 mi) below the surface.

A larger quake followed: M2.2 10 km NNE of Hopland, 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
1.6 (md), micro
Local time
UTC
1985-05-29 23:47:50 UTC
Depth
8.6 km (5.4 mi), shallow
Epicenter
39.228° N, 122.788° 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, 0.8 km in depth
Magnitude uncertainty
±0.20
Depth from
From location
Station coverage gap
81°
Stations used
12

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 182 in the 60 days after this one and 0 in the 30 days before it.

After

  1. 2.210 km NNE of Hopland, California · 15086 days ago · 5 km deep · 31 km away
  2. 2.010 km NNE of Hopland, California · 15086 days ago · 5 km deep · 31 km away
  3. 2.27 km W of Cobb, California · 15086 days ago · 0 km deep · 46 km away
  4. 1.66 km W of Cobb, California · 15085 days ago · 4 km deep · 45 km away
  5. 1.722 km NE of Potter Valley, California · 15085 days ago · 7 km deep · 29 km away
  6. 1.65 km SW of Cobb, California · 15085 days ago · 1 km deep · 49 km away
  7. 1.89 km S of Hopland, California · 15085 days ago · 5 km deep · 48 km away
  8. 2.24 km SW of Cobb, California · 15085 days ago · 1 km deep · 49 km away
  9. 2.38 km E of Williams, California · 15084 days ago · 17 km deep · 64 km away
  10. 1.66 km WSW of Cobb, California · 15084 days ago · 1 km deep · 46 km away
  11. 1.8near the coast of Northern California · 15084 days ago · 4 km deep · 40 km away
  12. 2.014 km N of Upper Lake, California · 15084 days ago · -1 km deep · 14 km away
  13. 1.76 km W of Cobb, California · 15083 days ago · 3 km deep · 45 km away
  14. 1.75 km WSW of Cobb, California · 15083 days ago · 0 km deep · 48 km away
  15. 1.68 km WSW of Cobb, California · 15083 days ago · 3 km deep · 48 km away
  16. 2.07 km NNE of Arbuckle, California · 15083 days ago · 8 km deep · 68 km away
  17. 1.65 km NE of College City, California · 15083 days ago · 4 km deep · 74 km away
  18. 1.79 km NW of Cobb, California · 15083 days ago · 1 km deep · 39 km away
  19. 2.09 km ESE of Williams, California · 15082 days ago · 5 km deep · 65 km away
  20. 2.26 km W of Cobb, California · 15082 days ago · 2 km deep · 46 km away
  21. 1.66 km W of Cobb, California · 15082 days ago · 2 km deep · 46 km away
  22. 1.66 km W of Cobb, California · 15082 days ago · 0 km deep · 45 km away
  23. 1.98 km W of Cobb, California · 15082 days ago · 0 km deep · 44 km away
  24. 1.910 km N of Arbuckle, California · 15081 days ago · 7 km deep · 66 km away
  25. 1.56 km W of Cobb, California · 15080 days ago · 3 km deep · 45 km away
  26. 1.85 km SW of Cobb, California · 15080 days ago · 0 km deep · 49 km away
  27. 1.75 km SW of Cobb, California · 15079 days ago · 1 km deep · 49 km away
  28. 1.67 km WSW of Cobb, California · 15079 days ago · 1 km deep · 47 km away
  29. 1.89 km WSW of Ukiah, California · 15078 days ago · 4 km deep · 47 km away
  30. 1.65 km W of Cobb, California · 15078 days ago · 1 km deep · 45 km away
  31. 1.66 km W of Cobb, California · 15078 days ago · 2 km deep · 46 km away
  32. 1.67 km NNE of Hopland, California · 15077 days ago · 0 km deep · 33 km away
  33. 2.3Northern California · 15077 days ago · 5 km deep · 96 km away
  34. 3.16 km W of Cobb, California · 15077 days ago · 1 km deep · 46 km away
  35. 1.56 km W of Cobb, California · 15077 days ago · 1 km deep · 46 km away
  36. 2.2Northern California · 15077 days ago · 18 km deep · 64 km away
  37. 1.73 km NNW of Hamilton City, California · 15076 days ago · 10 km deep · 89 km away
  38. 1.76 km WSW of Colusa, California · 15076 days ago · 13 km deep · 61 km away
  39. 1.68 km SW of Clear Lake Riviera, California · 15076 days ago · 2 km deep · 37 km away
  40. 1.99 km W of Redwood Valley, California · 15076 days ago · 7 km deep · 46 km away
  41. 2.218 km WSW of Esparto, California · 15075 days ago · 6 km deep · 83 km away
  42. 1.87 km W of Cobb, California · 15075 days ago · 1 km deep · 45 km away
  43. 1.67 km W of Cobb, California · 15075 days ago · 1 km deep · 45 km away
  44. 2.46 km W of Cobb, California · 15074 days ago · 3 km deep · 45 km away
  45. 1.66 km W of Cobb, California · 15074 days ago · 3 km deep · 45 km away
  46. 1.612 km ENE of Healdsburg, California · 15074 days ago · 4 km deep · 64 km away
  47. 2.76 km E of Williams, California · 15074 days ago · 17 km deep · 62 km away
  48. 1.511 km E of Hidden Valley Lake, California · 15073 days ago · 8 km deep · 55 km away
  49. 2.17 km SSW of Colusa, California · 15073 days ago · 3 km deep · 66 km away
  50. 1.88 km WSW of Cobb, California · 15073 days ago · 3 km deep · 48 km away
  51. 1.86 km NE of Williams, California · 15073 days ago · 18 km deep · 60 km away
  52. 1.89 km WSW of Cobb, California · 15073 days ago · 2 km deep · 48 km away
  53. 2.14 km ENE of Williams, California · 15072 days ago · 21 km deep · 60 km away
  54. 2.19 km ENE of Brooktrails, California · 15072 days ago · 10 km deep · 52 km away
  55. 1.77 km W of Cobb, California · 15072 days ago · 0 km deep · 45 km away
  56. 1.57 km W of Cobb, California · 15072 days ago · 1 km deep · 44 km away
  57. 2.3Northern California · 15072 days ago · 4 km deep · 86 km away
  58. 2.76 km W of Cobb, California · 15072 days ago · 3 km deep · 45 km away
  59. 2.19 km NNE of Arbuckle, California · 15071 days ago · 13 km deep · 68 km away
  60. 1.912 km NW of Moskowite Corner, California · 15071 days ago · 10 km deep · 89 km away

The first 60 of 182.

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc49281. Read Tue, Sep 22, 2026, 5:28 PM UTC.