California earthquakes

M1.8 earthquake 8 km WSW of Cobb, California

A magnitude 1.8 earthquake struck 8 km WSW of Cobb, California on Sun, Jun 16, 1985, 5:39 AM PDT (12:39 UTC), 3 km (2 mi) below the surface.

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

Cobb 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
1.8 (md), micro
Local time
UTC
1985-06-16 12:39:56 UTC
Depth
3.2 km (2.0 mi), shallow
Epicenter
38.798° N, 122.814° 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, 0.4 km in depth
Magnitude uncertainty
±0.11
Depth from
From location
Station coverage gap
39°
Stations used
23

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 175 in the 60 days after this one and 133 in the 30 days before it.

After

  1. 1.86 km NE of Williams, California · 15080 days ago · 18 km deep · 76 km away
  2. 1.89 km WSW of Cobb, California · 15079 days ago · 2 km deep · 1 km away
  3. 2.14 km ENE of Williams, California · 15079 days ago · 21 km deep · 75 km away
  4. 2.19 km ENE of Brooktrails, California · 15079 days ago · 10 km deep · 87 km away
  5. 1.77 km W of Cobb, California · 15079 days ago · 0 km deep · 3 km away
  6. 1.57 km W of Cobb, California · 15079 days ago · 1 km deep · 3 km away
  7. 2.3Northern California · 15079 days ago · 4 km deep · 57 km away
  8. 2.76 km W of Cobb, California · 15078 days ago · 3 km deep · 3 km away
  9. 2.19 km NNE of Arbuckle, California · 15078 days ago · 13 km deep · 76 km away
  10. 1.912 km NW of Moskowite Corner, California · 15078 days ago · 10 km deep · 55 km away
  11. 1.67 km W of Cobb, California · 15078 days ago · 1 km deep · 3 km away
  12. 1.63 km SW of Cobb, California · 15077 days ago · 1 km deep · 6 km away
  13. 2.510 km WSW of Cobb, California · 15076 days ago · 2 km deep · 2 km away
  14. 2.87 km W of Cobb, California · 15076 days ago · 4 km deep · 3 km away
  15. 1.66 km W of Cobb, California · 15075 days ago · 0 km deep · 3 km away
  16. 1.76 km SW of Cobb, California · 15075 days ago · 4 km deep · 4 km away
  17. 2.96 km W of Cobb, California · 15075 days ago · 1 km deep · 3 km away
  18. 1.75 km WSW of Cobb, California · 15075 days ago · 2 km deep · 3 km away
  19. 2.613 km ENE of Cloverdale, California · 15074 days ago · 4 km deep · 7 km away
  20. 1.53 km ENE of Williams, California · 15074 days ago · 14 km deep · 73 km away
  21. 1.97 km W of Cobb, California · 15074 days ago · 1 km deep · 3 km away
  22. 2.617 km N of Upper Lake, California · 15074 days ago · 11 km deep · 59 km away
  23. 1.97 km W of Cobb, California · 15074 days ago · 3 km deep · 2 km away
  24. 1.64 km W of Cobb, California · 15074 days ago · 1 km deep · 4 km away
  25. 2.05 km NNE of Williams, California · 15073 days ago · 16 km deep · 74 km away
  26. 2.67 km W of Cobb, California · 15073 days ago · 3 km deep · 1 km away
  27. 2.47 km W of Cobb, California · 15073 days ago · 3 km deep · 1 km away
  28. 2.06 km SW of Cobb, California · 15072 days ago · 1 km deep · 4 km away
  29. 1.610 km NNW of Sutter, California · 15072 days ago · 4 km deep · 99 km away
  30. 1.72 km W of Santa Rosa, California · 15072 days ago · 6 km deep · 40 km away
  31. 2.18 km WSW of Cobb, California · 15072 days ago · 4 km deep · 0 km away
  32. 1.94 km SW of Cobb, California · 15072 days ago · 0 km deep · 4 km away
  33. 1.76 km SSW of Calistoga, California · 15071 days ago · 5 km deep · 36 km away
  34. 1.75 km SSW of Cobb, California · 15071 days ago · -1 km deep · 5 km away
  35. 2.210 km NNW of Stonyford, California · 15070 days ago · 7 km deep · 77 km away
  36. 1.87 km W of Cobb, California · 15070 days ago · 3 km deep · 3 km away
  37. 2.310 km NNW of Stonyford, California · 15069 days ago · 4 km deep · 77 km away
  38. 2.25 km E of Calpella, California · 15069 days ago · 7 km deep · 56 km away
  39. 1.66 km E of Calpella, California · 15069 days ago · 4 km deep · 56 km away
  40. 1.96 km WSW of Cobb, California · 15069 days ago · 3 km deep · 2 km away
  41. 2.04 km WSW of Cobb, California · 15067 days ago · 1 km deep · 4 km away
  42. 2.58 km SSW of Colusa, California · 15067 days ago · 5 km deep · 77 km away
  43. 2.06 km W of Cobb, California · 15066 days ago · 3 km deep · 3 km away
  44. 1.66 km W of Cobb, California · 15066 days ago · 3 km deep · 3 km away
  45. 2.14 km SSE of Green Valley, California · 15065 days ago · 9 km deep · 87 km away
  46. 1.86 km W of Cobb, California · 15065 days ago · 0 km deep · 3 km away
  47. 2.06 km W of Cobb, California · 15065 days ago · 2 km deep · 2 km away
  48. 1.96 km W of Cobb, California · 15065 days ago · 2 km deep · 2 km away
  49. 2.47 km WSW of Cobb, California · 15064 days ago · 1 km deep · 1 km away
  50. 1.612 km E of Cloverdale, California · 15063 days ago · 5 km deep · 6 km away
  51. 1.84 km WSW of Cobb, California · 15063 days ago · 1 km deep · 4 km away
  52. 1.66 km W of Cobb, California · 15063 days ago · 3 km deep · 2 km away
  53. 4.312 km WSW of Kelseyville, California · 15063 days ago · 4 km deep · 20 km away
  54. 1.77 km WSW of Cobb, California · 15062 days ago · 2 km deep · 1 km away
  55. 2.17 km SSW of Colusa, California · 15062 days ago · 13 km deep · 77 km away
  56. 1.76 km NE of Williams, California · 15061 days ago · 12 km deep · 76 km away
  57. 1.95 km SSE of Clear Lake Riviera, California · 15061 days ago · 1 km deep · 17 km away
  58. 2.37 km SW of Colusa, California · 15061 days ago · 15 km deep · 76 km away
  59. 2.37 km W of Cobb, California · 15060 days ago · 1 km deep · 3 km away
  60. 3.07 km W of Cobb, California · 15060 days ago · 3 km deep · 3 km away

The first 60 of 175.

Before

  1. 2.17 km SSW of Colusa, California · 15080 days ago · 3 km deep · 78 km away
  2. 1.511 km E of Hidden Valley Lake, California · 15080 days ago · 8 km deep · 33 km away
  3. 2.76 km E of Williams, California · 15080 days ago · 17 km deep · 76 km away
  4. 1.612 km ENE of Healdsburg, California · 15081 days ago · 4 km deep · 18 km away
  5. 1.66 km W of Cobb, California · 15081 days ago · 3 km deep · 3 km away
  6. 2.46 km W of Cobb, California · 15081 days ago · 3 km deep · 3 km away
  7. 1.67 km W of Cobb, California · 15081 days ago · 1 km deep · 3 km away
  8. 1.87 km W of Cobb, California · 15081 days ago · 1 km deep · 3 km away
  9. 2.218 km WSW of Esparto, California · 15082 days ago · 6 km deep · 55 km away
  10. 1.99 km W of Redwood Valley, California · 15082 days ago · 7 km deep · 68 km away
  11. 1.68 km SW of Clear Lake Riviera, California · 15082 days ago · 2 km deep · 11 km away
  12. 1.76 km WSW of Colusa, California · 15082 days ago · 13 km deep · 77 km away
  13. 2.2Northern California · 15083 days ago · 18 km deep · 77 km away
  14. 1.56 km W of Cobb, California · 15083 days ago · 1 km deep · 2 km away
  15. 3.16 km W of Cobb, California · 15083 days ago · 1 km deep · 2 km away
  16. 2.3Northern California · 15084 days ago · 5 km deep · 50 km away
  17. 1.67 km NNE of Hopland, California · 15084 days ago · 0 km deep · 35 km away
  18. 1.66 km W of Cobb, California · 15084 days ago · 2 km deep · 2 km away
  19. 1.65 km W of Cobb, California · 15084 days ago · 1 km deep · 4 km away
  20. 1.89 km WSW of Ukiah, California · 15085 days ago · 4 km deep · 57 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc49638. Read Tue, Sep 29, 2026, 4:10 AM UTC.