California earthquakes

M1.7 earthquake 6 km W of Cobb, California

A magnitude 1.7 earthquake struck 6 km W of Cobb, California on Wed, May 28, 1986, 6:00 PM PDT (01:00 UTC), 1 km (1 mi) below the surface.

A larger quake followed: M3.3 6 km W of Cobb, 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
1.7 (md), micro
Local time
UTC
1986-05-29 01:00:46 UTC
Depth
0.8 km (0.5 mi), shallow
Epicenter
38.831° N, 122.795° 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 2.5 km horizontally, 1.0 km in depth
Magnitude uncertainty
±0.06
Depth from
From location
Station coverage gap
177°
Stations used
6

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 153 in the 60 days after this one and 95 in the 30 days before it.

After

  1. 1.65 km W of Cobb, California · 14732 days ago · 0 km deep · 1 km away
  2. 2.45 km SSW of Cobb, California · 14732 days ago · 0 km deep · 6 km away
  3. 2.35 km SW of Cobb, California · 14731 days ago · 0 km deep · 5 km away
  4. 2.65 km SW of Cobb, California · 14731 days ago · 4 km deep · 5 km away
  5. 1.96 km W of Cobb, California · 14730 days ago · 4 km deep · 1 km away
  6. 1.91 km NW of Clearlake, California · 14730 days ago · 40 km deep · 20 km away
  7. 1.97 km W of Cobb, California · 14729 days ago · 4 km deep · 3 km away
  8. 1.92 km SW of Cobb, California · 14729 days ago · 1 km deep · 5 km away
  9. 1.76 km WSW of Cobb, California · 14728 days ago · 2 km deep · 4 km away
  10. 2.25 km SW of Cobb, California · 14728 days ago · 2 km deep · 5 km away
  11. 1.64 km W of Cobb, California · 14727 days ago · 0 km deep · 2 km away
  12. 1.56 km W of Cobb, California · 14725 days ago · -1 km deep · 0 km away
  13. 1.813 km NE of Upper Lake, California · 14723 days ago · 10 km deep · 48 km away
  14. 1.73 km W of Cobb, California · 14723 days ago · 0 km deep · 3 km away
  15. 1.614 km ENE of Angwin, California · 14723 days ago · 4 km deep · 47 km away
  16. 1.96 km W of Cobb, California · 14723 days ago · -1 km deep · 1 km away
  17. 2.08 km WSW of Geyserville, California · 14722 days ago · 4 km deep · 25 km away
  18. 1.52 km E of Clear Lake Riviera, California · 14722 days ago · 3 km deep · 17 km away
  19. 2.29 km WSW of Cobb, California · 14722 days ago · 2 km deep · 5 km away
  20. 1.55 km SW of Cobb, California · 14720 days ago · 2 km deep · 5 km away
  21. 3.24 km WSW of Hopland, California · 14718 days ago · 5 km deep · 34 km away
  22. 2.15 km WSW of Cobb, California · 14718 days ago · 1 km deep · 4 km away
  23. 1.55 km WSW of Cobb, California · 14718 days ago · 0 km deep · 4 km away
  24. 2.07 km W of Cobb, California · 14717 days ago · 3 km deep · 2 km away
  25. 1.8Northern California · 14716 days ago · 1 km deep · 5 km away
  26. 2.09 km WSW of Cobb, California · 14716 days ago · 2 km deep · 4 km away
  27. 1.719 km NE of Potter Valley, California · 14715 days ago · 4 km deep · 69 km away
  28. 1.96 km W of Cobb, California · 14715 days ago · 3 km deep · 1 km away
  29. 1.97 km WSW of Cobb, California · 14714 days ago · 2 km deep · 3 km away
  30. 2.26 km SW of Cobb, California · 14714 days ago · -1 km deep · 6 km away
  31. 1.87 km SW of Brooktrails, California · 14714 days ago · 6 km deep · 84 km away
  32. 1.56 km ESE of Geyserville, California · 14713 days ago · 6 km deep · 17 km away
  33. 1.58 km W of Cobb, California · 14713 days ago · 1 km deep · 2 km away
  34. 1.65 km SW of Cobb, California · 14712 days ago · 0 km deep · 5 km away
  35. 2.04 km WNW of Glen Ellen, California · 14712 days ago · 9 km deep · 54 km away
  36. 2.35 km SW of Cobb, California · 14711 days ago · 0 km deep · 5 km away
  37. 2.85 km SW of Cobb, California · 14711 days ago · -1 km deep · 6 km away
  38. 2.08 km WSW of Cobb, California · 14710 days ago · 3 km deep · 4 km away
  39. 1.88 km E of Lower Lake, California · 14709 days ago · 1 km deep · 26 km away
  40. 1.98 km E of Lower Lake, California · 14709 days ago · 2 km deep · 26 km away
  41. 1.98 km E of Lower Lake, California · 14709 days ago · 6 km deep · 26 km away
  42. 2.48 km E of Lower Lake, California · 14709 days ago · 5 km deep · 26 km away
  43. 2.58 km WSW of Cobb, California · 14708 days ago · 3 km deep · 4 km away
  44. 1.710 km WSW of Cobb, California · 14708 days ago · -1 km deep · 6 km away
  45. 1.9Northern California · 14708 days ago · 1 km deep · 2 km away
  46. 2.914 km WSW of Guinda, California · 14708 days ago · 5 km deep · 39 km away
  47. 1.95 km ENE of Black Point-Green Point, California · 14707 days ago · 12 km deep · 83 km away
  48. 2.18 km ENE of Talmage, California · 14707 days ago · 23 km deep · 45 km away
  49. 2.37 km WSW of Cobb, California · 14706 days ago · 3 km deep · 4 km away
  50. 2.34 km S of Cobb, California · 14706 days ago · 0 km deep · 8 km away
  51. 2.26 km W of Cobb, California · 14706 days ago · 3 km deep · 1 km away
  52. 1.97 km W of Cobb, California · 14706 days ago · 3 km deep · 2 km away
  53. 1.65 km SW of Cobb, California · 14706 days ago · 1 km deep · 5 km away
  54. 2.710 km SSE of Willows, California · 14705 days ago · 45 km deep · 87 km away
  55. 2.67 km WSW of Cobb, California · 14704 days ago · 0 km deep · 3 km away
  56. 2.57 km WSW of Cobb, California · 14704 days ago · 0 km deep · 3 km away
  57. 1.68 km W of Cobb, California · 14704 days ago · 1 km deep · 2 km away
  58. 2.18 km WSW of Cobb, California · 14703 days ago · 1 km deep · 4 km away
  59. 2.48 km WSW of Cobb, California · 14703 days ago · 1 km deep · 4 km away
  60. 2.25 km SW of Cobb, California · 14703 days ago · 2 km deep · 5 km away

The first 60 of 153.

Before

  1. 2.14 km WSW of Cobb, California · 14733 days ago · -1 km deep · 4 km away
  2. 1.74 km WSW of Cobb, California · 14733 days ago · -1 km deep · 3 km away
  3. 1.818 km NNE of Upper Lake, California · 14734 days ago · 4 km deep · 53 km away
  4. 1.76 km WNW of Healdsburg, California · 14734 days ago · 4 km deep · 24 km away
  5. 1.65 km WNW of Cobb, California · 14734 days ago · -1 km deep · 1 km away
  6. 2.67 km W of Cobb, California · 14734 days ago · 3 km deep · 2 km away
  7. 1.85 km SW of Cobb, California · 14734 days ago · -1 km deep · 5 km away
  8. 3.16 km W of Cobb, California · 14734 days ago · 3 km deep · 1 km away
  9. 1.56 km W of Cobb, California · 14734 days ago · 3 km deep · 1 km away
  10. 2.06 km SW of Cobb, California · 14735 days ago · 2 km deep · 6 km away
  11. 3.26 km W of Cobb, California · 14736 days ago · 3 km deep · 2 km away
  12. 2.16 km WSW of Cobb, California · 14736 days ago · 2 km deep · 3 km away
  13. 2.16 km W of Cobb, California · 14737 days ago · 3 km deep · 1 km away
  14. 1.610 km SSW of Kelseyville, California · 14738 days ago · 1 km deep · 9 km away
  15. 2.47 km WSW of Cobb, California · 14739 days ago · 3 km deep · 4 km away
  16. 2.4Northern California · 14739 days ago · 1 km deep · 5 km away
  17. 1.65 km WNW of Cobb, California · 14739 days ago · 1 km deep · 1 km away
  18. 1.68 km W of Cobb, California · 14739 days ago · 2 km deep · 2 km away
  19. 1.66 km W of Cobb, California · 14739 days ago · 3 km deep · 1 km away
  20. 1.911 km NNE of Geyserville, California · 14740 days ago · 3 km deep · 6 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1138521. Read Mon, Sep 28, 2026, 11:35 AM UTC.