California earthquakes

M1.8 earthquake 7 km WSW of Cobb, California

A magnitude 1.8 earthquake struck 7 km WSW of Cobb, California on Sat, Mar 8, 1986, 11:31 PM PST (07:31 UTC), 1 km (0 mi) below the surface.

A larger quake followed: M3.6 12 km W of Ukiah, 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, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
1986-03-09 07:31:38 UTC
Depth
0.6 km (0.4 mi), shallow
Epicenter
38.792° N, 122.794° 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, 0.5 km in depth
Magnitude uncertainty
±0.15
Depth from
From location
Station coverage gap
76°
Stations used
9

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 173 in the 60 days after this one and 84 in the 30 days before it.

After

  1. 1.78 km W of Cobb, California · 14816 days ago · 1 km deep · 3 km away
  2. 2.06 km WSW of Cobb, California · 14816 days ago · 1 km deep · 2 km away
  3. 1.74 km WSW of Cobb, California · 14816 days ago · 0 km deep · 2 km away
  4. 1.85 km SW of Cobb, California · 14815 days ago · -1 km deep · 2 km away
  5. 1.75 km SW of Cobb, California · 14815 days ago · 1 km deep · 2 km away
  6. 2.18 km ESE of Willits, California · 14814 days ago · 3 km deep · 77 km away
  7. 2.38 km WSW of Cobb, California · 14814 days ago · 1 km deep · 2 km away
  8. 2.45 km WSW of Cobb, California · 14814 days ago · 4 km deep · 2 km away
  9. 1.76 km W of Cobb, California · 14814 days ago · 2 km deep · 2 km away
  10. 1.96 km W of Cobb, California · 14813 days ago · 2 km deep · 3 km away
  11. 2.05 km SW of Cobb, California · 14813 days ago · 0 km deep · 3 km away
  12. 1.66 km W of Cobb, California · 14813 days ago · 3 km deep · 3 km away
  13. 1.76 km NE of Willits, California · 14812 days ago · 7 km deep · 85 km away
  14. 2.25 km SW of Cobb, California · 14812 days ago · 0 km deep · 2 km away
  15. 2.06 km W of Cobb, California · 14812 days ago · 1 km deep · 5 km away
  16. 1.68 km W of Cobb, California · 14811 days ago · -1 km deep · 4 km away
  17. 1.77 km WSW of Cobb, California · 14811 days ago · 1 km deep · 1 km away
  18. 1.66 km W of Cobb, California · 14811 days ago · 3 km deep · 3 km away
  19. 1.53 km WNW of Cobb, California · 14811 days ago · 1 km deep · 5 km away
  20. 1.87 km WSW of Cobb, California · 14811 days ago · 1 km deep · 2 km away
  21. 1.84 km S of Cobb, California · 14810 days ago · 0 km deep · 6 km away
  22. 2.44 km SW of Cobb, California · 14810 days ago · 1 km deep · 2 km away
  23. 1.76 km W of Cobb, California · 14810 days ago · 0 km deep · 3 km away
  24. 2.27 km W of Cobb, California · 14810 days ago · 2 km deep · 3 km away
  25. 2.625 km ENE of Potter Valley, California · 14809 days ago · 10 km deep · 70 km away
  26. 2.15 km W of Cobb, California · 14809 days ago · 0 km deep · 3 km away
  27. 2.25 km WSW of Cobb, California · 14809 days ago · 0 km deep · 1 km away
  28. 1.74 km ESE of Clear Lake Riviera, California · 14809 days ago · 2 km deep · 20 km away
  29. 1.74 km W of Cobb, California · 14808 days ago · 1 km deep · 4 km away
  30. 2.24 km SW of Cobb, California · 14808 days ago · 0 km deep · 3 km away
  31. 1.96 km W of Cobb, California · 14808 days ago · 3 km deep · 3 km away
  32. 1.84 km W of Cobb, California · 14808 days ago · 1 km deep · 4 km away
  33. 1.84 km W of Cobb, California · 14808 days ago · -1 km deep · 4 km away
  34. 2.07 km WSW of Cobb, California · 14808 days ago · 0 km deep · 1 km away
  35. 1.76 km WNW of Cobb, California · 14807 days ago · 1 km deep · 5 km away
  36. 1.77 km W of Cobb, California · 14807 days ago · 3 km deep · 3 km away
  37. 1.83 km SW of Cobb, California · 14806 days ago · 1 km deep · 4 km away
  38. 1.67 km WSW of Cobb, California · 14806 days ago · 1 km deep · 2 km away
  39. 1.96 km W of Cobb, California · 14806 days ago · 3 km deep · 3 km away
  40. 1.64 km W of Cobb, California · 14806 days ago · -1 km deep · 3 km away
  41. 1.52 km SSE of Roseland, California · 14806 days ago · 4 km deep · 43 km away
  42. 1.77 km WSW of Cobb, California · 14806 days ago · 3 km deep · 1 km away
  43. 1.87 km W of Cobb, California · 14806 days ago · 3 km deep · 3 km away
  44. 1.57 km W of Cobb, California · 14806 days ago · 3 km deep · 3 km away
  45. 1.65 km W of Cobb, California · 14806 days ago · 0 km deep · 4 km away
  46. 1.825 km ENE of Potter Valley, California · 14805 days ago · 1 km deep · 67 km away
  47. 1.64 km WSW of Cobb, California · 14805 days ago · 1 km deep · 2 km away
  48. 2.37 km WSW of Cobb, California · 14804 days ago · 0 km deep · 1 km away
  49. 1.76 km W of Cobb, California · 14804 days ago · 3 km deep · 3 km away
  50. 2.07 km ESE of Cloverdale, California · 14803 days ago · 5 km deep · 13 km away
  51. 1.77 km W of Cobb, California · 14803 days ago · 3 km deep · 3 km away
  52. 2.210 km ESE of Willits, California · 14803 days ago · 7 km deep · 76 km away
  53. 3.67 km W of Cobb, California · 14803 days ago · 0 km deep · 4 km away
  54. 2.77 km W of Cobb, California · 14803 days ago · 1 km deep · 4 km away
  55. 2.08 km WSW of Cobb, California · 14803 days ago · 3 km deep · 2 km away
  56. 2.19 km E of Elmira, California · 14802 days ago · 17 km deep · 100 km away
  57. 2.14 km WSW of Cobb, California · 14800 days ago · 1 km deep · 2 km away
  58. 1.84 km WSW of Cobb, California · 14800 days ago · 1 km deep · 2 km away
  59. 1.6Northern California · 14800 days ago · 3 km deep · 4 km away
  60. 1.74 km WSW of Cobb, California · 14800 days ago · 1 km deep · 3 km away

The first 60 of 173.

Before

  1. 2.18 km W of Cobb, California · 14817 days ago · 1 km deep · 4 km away
  2. 1.67 km SSE of Cloverdale, California · 14818 days ago · 2 km deep · 17 km away
  3. 1.89 km W of Cobb, California · 14818 days ago · -1 km deep · 4 km away
  4. 2.58 km W of Cobb, California · 14818 days ago · 1 km deep · 3 km away
  5. 2.3Northern California · 14818 days ago · 4 km deep · 2 km away
  6. 1.96 km SSW of Calistoga, California · 14818 days ago · 4 km deep · 33 km away
  7. 1.71 km SE of Clear Lake Riviera, California · 14819 days ago · 2 km deep · 19 km away
  8. 2.26 km W of Cobb, California · 14819 days ago · -1 km deep · 4 km away
  9. 2.119 km NNE of Upper Lake, California · 14819 days ago · 5 km deep · 60 km away
  10. 2.119 km NNE of Upper Lake, California · 14819 days ago · 0 km deep · 60 km away
  11. 1.97 km WSW of Cobb, California · 14820 days ago · 0 km deep · 2 km away
  12. 1.65 km WSW of Cobb, California · 14820 days ago · 3 km deep · 2 km away
  13. 1.610 km N of Cloverdale, California · 14821 days ago · -1 km deep · 23 km away
  14. 2.23 km SSW of Guinda, California · 14821 days ago · 6 km deep · 50 km away
  15. 1.56 km SW of Cobb, California · 14821 days ago · 2 km deep · 1 km away
  16. 2.25 km W of Cobb, California · 14822 days ago · -1 km deep · 3 km away
  17. 1.59 km NNE of Larkfield-Wikiup, California · 14822 days ago · 1 km deep · 23 km away
  18. 1.97 km WSW of Cobb, California · 14822 days ago · 0 km deep · 1 km away
  19. 1.77 km W of Cobb, California · 14822 days ago · 3 km deep · 3 km away
  20. 1.87 km W of Cobb, California · 14822 days ago · 3 km deep · 3 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1136471. Read Thu, Oct 1, 2026, 10:33 PM UTC.