California earthquakes

M1.6 earthquake 1 km S of Cotati, California

A magnitude 1.6 earthquake struck 1 km S of Cotati, California on Sat, Apr 13, 1985, 10:30 AM PST (18:30 UTC), 17 km (10 mi) below the surface.

A larger quake followed: M2.0 7 km W of Cobb, California. This one was a foreshock.

Cotati 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
1.6 (md), micro
Local time
UTC
1985-04-13 18:30:45 UTC
Depth
16.9 km (10.5 mi), shallow
Epicenter
38.317° N, 122.707° 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 2.8 km horizontally, 3.0 km in depth
Magnitude uncertainty
±0.42
Depth from
From location
Station coverage gap
252°, poorly surrounded by stations
Stations used
4

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 172 in the 60 days after this one and 0 in the 30 days before it.

After

  1. 2.07 km W of Cobb, California · 15132 days ago · 1 km deep · 57 km away
  2. 2.221 km WSW of Williams, California · 15132 days ago · 0 km deep · 91 km away
  3. 1.67 km WSW of Cobb, California · 15132 days ago · 0 km deep · 55 km away
  4. 1.611 km W of Cobb, California · 15131 days ago · -1 km deep · 57 km away
  5. 1.77 km W of Cobb, California · 15131 days ago · 0 km deep · 57 km away
  6. 2.57 km W of Cobb, California · 15131 days ago · 1 km deep · 57 km away
  7. 2.57 km W of Cobb, California · 15131 days ago · 1 km deep · 57 km away
  8. 1.67 km W of Cobb, California · 15131 days ago · 1 km deep · 57 km away
  9. 2.57 km W of Cobb, California · 15131 days ago · 1 km deep · 57 km away
  10. 2.322 km WSW of Williams, California · 15130 days ago · 3 km deep · 90 km away
  11. 1.57 km W of Cobb, California · 15130 days ago · 1 km deep · 58 km away
  12. 2.23 km ESE of Berkeley, California · 15129 days ago · 8 km deep · 65 km away
  13. 1.66 km W of Cobb, California · 15129 days ago · 3 km deep · 57 km away
  14. 1.68 km WSW of Cobb, California · 15129 days ago · 3 km deep · 54 km away
  15. 2.41 km SSW of Green Valley, California · 15129 days ago · 12 km deep · 47 km away
  16. 2.02 km S of Green Valley, California · 15129 days ago · 11 km deep · 49 km away
  17. 1.64 km SW of Hopland, California · 15129 days ago · 5 km deep · 80 km away
  18. 2.37 km WSW of Cobb, California · 15128 days ago · 4 km deep · 54 km away
  19. 1.66 km W of Cobb, California · 15127 days ago · 1 km deep · 56 km away
  20. 1.78 km WSW of Cobb, California · 15127 days ago · 3 km deep · 55 km away
  21. 1.85 km NNW of Geyserville, California · 15126 days ago · 5 km deep · 52 km away
  22. 1.97 km WSW of Cobb, California · 15125 days ago · 2 km deep · 54 km away
  23. 1.97 km WSW of Cobb, California · 15124 days ago · 1 km deep · 55 km away
  24. 2.16 km W of Cobb, California · 15123 days ago · 3 km deep · 56 km away
  25. 2.06 km W of Cobb, California · 15123 days ago · 3 km deep · 56 km away
  26. 2.28 km WSW of Cobb, California · 15123 days ago · 3 km deep · 54 km away
  27. 1.72 km SE of Pittsburg, California · 15123 days ago · 16 km deep · 81 km away
  28. 2.13 km ESE of Berkeley, California · 15122 days ago · 8 km deep · 65 km away
  29. 1.7Northern California · 15122 days ago · 2 km deep · 54 km away
  30. 2.1Northern California · 15122 days ago · 2 km deep · 26 km away
  31. 2.74 km W of Cobb, California · 15122 days ago · 0 km deep · 57 km away
  32. 1.66 km W of Cobb, California · 15122 days ago · -1 km deep · 58 km away
  33. 1.66 km W of Cobb, California · 15122 days ago · -1 km deep · 57 km away
  34. 2.33 km SSE of North Gate, California · 15122 days ago · 10 km deep · 81 km away
  35. 1.69 km W of Cobb, California · 15121 days ago · 1 km deep · 56 km away
  36. 1.59 km W of Cobb, California · 15121 days ago · 1 km deep · 56 km away
  37. 1.77 km WSW of Cobb, California · 15121 days ago · 1 km deep · 55 km away
  38. 2.45 km SW of Cobb, California · 15121 days ago · 0 km deep · 53 km away
  39. 2.06 km WNW of Guinda, California · 15121 days ago · 3 km deep · 71 km away
  40. 1.85 km SW of Cobb, California · 15121 days ago · 2 km deep · 53 km away
  41. 1.77 km WSW of Cobb, California · 15120 days ago · 1 km deep · 55 km away
  42. 2.55 km WSW of Cobb, California · 15120 days ago · 3 km deep · 53 km away
  43. 2.16 km W of Cobb, California · 15120 days ago · 3 km deep · 57 km away
  44. 1.77 km W of Cobb, California · 15119 days ago · 1 km deep · 55 km away
  45. 2.321 km WSW of Williams, California · 15119 days ago · 0 km deep · 91 km away
  46. 1.72 km SSE of San Ramon, California · 15119 days ago · 8 km deep · 90 km away
  47. 1.85 km W of Angwin, California · 15117 days ago · 8 km deep · 34 km away
  48. 1.86 km W of Cobb, California · 15116 days ago · -1 km deep · 57 km away
  49. 2.15 km SSW of Cobb, California · 15116 days ago · 1 km deep · 52 km away
  50. 1.712 km WNW of Cobb, California · 15116 days ago · 1 km deep · 61 km away
  51. 1.610 km NW of Cobb, California · 15115 days ago · 2 km deep · 63 km away
  52. 2.0Northern California · 15115 days ago · 1 km deep · 57 km away
  53. 1.67 km W of Cobb, California · 15114 days ago · 3 km deep · 56 km away
  54. 1.6Northern California · 15114 days ago · 3 km deep · 56 km away
  55. 1.54 km S of Cobb, California · 15114 days ago · 2 km deep · 51 km away
  56. 1.88 km W of Cobb, California · 15112 days ago · 1 km deep · 57 km away
  57. 1.68 km W of Cobb, California · 15112 days ago · 1 km deep · 57 km away
  58. 1.86 km W of Cobb, California · 15111 days ago · 0 km deep · 57 km away
  59. 2.36 km W of Cobb, California · 15111 days ago · 0 km deep · 57 km away
  60. 1.56 km W of Cobb, California · 15111 days ago · 0 km deep · 57 km away

The first 60 of 172.

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1127329. Read Tue, Sep 22, 2026, 2:36 PM UTC.