California earthquakes

M1.8 earthquake 4 km S of Cobb, California

A magnitude 1.8 earthquake struck 4 km S of Cobb, California on Sat, Mar 15, 1986, 2:12 PM PST (22:12 UTC), 0 km (0 mi) below the surface.

A larger quake followed: M4.1 7 km W of Lodoga, 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
1986-03-15 22:12:10 UTC
Depth
0.4 km (0.2 mi), shallow
Epicenter
38.782° N, 122.728° 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, 0.6 km in depth
Magnitude uncertainty
±0.13
Depth from
From location
Station coverage gap
52°
Stations used
15

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 81 in the 30 days before it.

After

  1. 2.44 km SW of Cobb, California · 14809 days ago · 1 km deep · 4 km away
  2. 1.76 km W of Cobb, California · 14809 days ago · 0 km deep · 7 km away
  3. 2.27 km W of Cobb, California · 14809 days ago · 2 km deep · 8 km away
  4. 2.625 km ENE of Potter Valley, California · 14808 days ago · 10 km deep · 72 km away
  5. 2.15 km W of Cobb, California · 14808 days ago · 0 km deep · 7 km away
  6. 2.25 km WSW of Cobb, California · 14808 days ago · 0 km deep · 5 km away
  7. 1.74 km ESE of Clear Lake Riviera, California · 14808 days ago · 2 km deep · 19 km away
  8. 1.74 km W of Cobb, California · 14808 days ago · 1 km deep · 6 km away
  9. 2.24 km SW of Cobb, California · 14807 days ago · 0 km deep · 3 km away
  10. 1.96 km W of Cobb, California · 14807 days ago · 3 km deep · 7 km away
  11. 1.84 km W of Cobb, California · 14807 days ago · 1 km deep · 7 km away
  12. 1.84 km W of Cobb, California · 14807 days ago · -1 km deep · 6 km away
  13. 2.07 km WSW of Cobb, California · 14807 days ago · 0 km deep · 7 km away
  14. 1.76 km WNW of Cobb, California · 14806 days ago · 1 km deep · 8 km away
  15. 1.77 km W of Cobb, California · 14806 days ago · 3 km deep · 8 km away
  16. 1.83 km SW of Cobb, California · 14806 days ago · 1 km deep · 2 km away
  17. 1.67 km WSW of Cobb, California · 14806 days ago · 1 km deep · 7 km away
  18. 1.96 km W of Cobb, California · 14806 days ago · 3 km deep · 7 km away
  19. 1.64 km W of Cobb, California · 14805 days ago · -1 km deep · 5 km away
  20. 1.52 km SSE of Roseland, California · 14805 days ago · 4 km deep · 42 km away
  21. 1.77 km WSW of Cobb, California · 14805 days ago · 3 km deep · 7 km away
  22. 1.87 km W of Cobb, California · 14805 days ago · 3 km deep · 8 km away
  23. 1.57 km W of Cobb, California · 14805 days ago · 3 km deep · 8 km away
  24. 1.65 km W of Cobb, California · 14805 days ago · 0 km deep · 7 km away
  25. 1.825 km ENE of Potter Valley, California · 14805 days ago · 1 km deep · 69 km away
  26. 1.64 km WSW of Cobb, California · 14805 days ago · 1 km deep · 4 km away
  27. 2.37 km WSW of Cobb, California · 14804 days ago · 0 km deep · 7 km away
  28. 1.76 km W of Cobb, California · 14803 days ago · 3 km deep · 8 km away
  29. 2.07 km ESE of Cloverdale, California · 14803 days ago · 5 km deep · 18 km away
  30. 1.77 km W of Cobb, California · 14802 days ago · 3 km deep · 8 km away
  31. 2.210 km ESE of Willits, California · 14802 days ago · 7 km deep · 80 km away
  32. 3.67 km W of Cobb, California · 14802 days ago · 0 km deep · 8 km away
  33. 2.77 km W of Cobb, California · 14802 days ago · 1 km deep · 9 km away
  34. 2.08 km WSW of Cobb, California · 14802 days ago · 3 km deep · 8 km away
  35. 2.19 km E of Elmira, California · 14801 days ago · 17 km deep · 94 km away
  36. 2.14 km WSW of Cobb, California · 14800 days ago · 1 km deep · 4 km away
  37. 1.84 km WSW of Cobb, California · 14800 days ago · 1 km deep · 5 km away
  38. 1.6Northern California · 14799 days ago · 3 km deep · 7 km away
  39. 1.74 km WSW of Cobb, California · 14799 days ago · 1 km deep · 5 km away
  40. 2.413 km E of Hidden Valley Lake, California · 14798 days ago · 0 km deep · 28 km away
  41. 1.95 km SW of Cobb, California · 14797 days ago · -1 km deep · 4 km away
  42. 2.66 km W of Cobb, California · 14797 days ago · 3 km deep · 7 km away
  43. 2.5Northern California · 14797 days ago · 1 km deep · 7 km away
  44. 2.45 km SW of Cobb, California · 14796 days ago · 1 km deep · 4 km away
  45. 1.65 km WSW of Cobb, California · 14796 days ago · 0 km deep · 5 km away
  46. 2.34 km WSW of Cobb, California · 14796 days ago · 1 km deep · 6 km away
  47. 2.59 km ESE of Hidden Valley Lake, California · 14796 days ago · 7 km deep · 24 km away
  48. 1.76 km W of Cobb, California · 14796 days ago · 3 km deep · 8 km away
  49. 2.14 km WSW of Cobb, California · 14795 days ago · 1 km deep · 4 km away
  50. 2.08 km WSW of Cobb, California · 14795 days ago · 4 km deep · 7 km away
  51. 1.512 km NE of Comptche, California · 14794 days ago · 5 km deep · 90 km away
  52. 1.57 km W of Cobb, California · 14794 days ago · 3 km deep · 8 km away
  53. 2.07 km W of Cobb, California · 14794 days ago · 3 km deep · 8 km away
  54. 1.66 km W of Cobb, California · 14794 days ago · 1 km deep · 8 km away
  55. 1.52 km E of Clear Lake Riviera, California · 14794 days ago · 3 km deep · 20 km away
  56. 2.116 km N of Upper Lake, California · 14793 days ago · 7 km deep · 61 km away
  57. 2.37 km WSW of Cobb, California · 14793 days ago · 0 km deep · 7 km away
  58. 1.65 km SW of Cobb, California · 14793 days ago · 1 km deep · 5 km away
  59. 1.55 km WSW of Cobb, California · 14793 days ago · 1 km deep · 5 km away
  60. 3.08 km W of Cobb, California · 14792 days ago · 1 km deep · 9 km away

The first 60 of 172.

Before

  1. 1.87 km WSW of Cobb, California · 14810 days ago · 1 km deep · 7 km away
  2. 1.53 km WNW of Cobb, California · 14810 days ago · 1 km deep · 6 km away
  3. 1.66 km W of Cobb, California · 14811 days ago · 3 km deep · 8 km away
  4. 1.77 km WSW of Cobb, California · 14811 days ago · 1 km deep · 7 km away
  5. 1.68 km W of Cobb, California · 14811 days ago · -1 km deep · 9 km away
  6. 2.06 km W of Cobb, California · 14811 days ago · 1 km deep · 8 km away
  7. 2.25 km SW of Cobb, California · 14812 days ago · 0 km deep · 4 km away
  8. 1.76 km NE of Willits, California · 14812 days ago · 7 km deep · 89 km away
  9. 1.66 km W of Cobb, California · 14812 days ago · 3 km deep · 8 km away
  10. 2.05 km SW of Cobb, California · 14812 days ago · 0 km deep · 3 km away
  11. 1.96 km W of Cobb, California · 14813 days ago · 2 km deep · 7 km away
  12. 1.76 km W of Cobb, California · 14813 days ago · 2 km deep · 7 km away
  13. 2.45 km WSW of Cobb, California · 14813 days ago · 4 km deep · 6 km away
  14. 2.38 km WSW of Cobb, California · 14814 days ago · 1 km deep · 8 km away
  15. 2.18 km ESE of Willits, California · 14814 days ago · 3 km deep · 81 km away
  16. 1.75 km SW of Cobb, California · 14814 days ago · 1 km deep · 4 km away
  17. 1.85 km SW of Cobb, California · 14815 days ago · -1 km deep · 4 km away
  18. 1.74 km WSW of Cobb, California · 14815 days ago · 0 km deep · 4 km away
  19. 2.06 km WSW of Cobb, California · 14815 days ago · 1 km deep · 7 km away
  20. 1.78 km W of Cobb, California · 14816 days ago · 1 km deep · 9 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc68115. Read Thu, Oct 1, 2026, 5:58 AM UTC.