California earthquakes

M2.0 earthquake 4 km SSW of Cobb, California

A magnitude 2.0 earthquake struck 4 km SSW of Cobb, California on Thu, Feb 20, 1986, 11:00 PM PST (07:00 UTC), 1 km (1 mi) below the surface.

A larger quake followed: M3.6 7 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
2.0 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
1986-02-21 07:00:29 UTC
Depth
1.4 km (0.9 mi), shallow
Epicenter
38.787° N, 122.753° 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
±0.16
Depth from
From location
Station coverage gap
92°
Stations used
11

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 176 in the 60 days after this one and 89 in the 30 days before it.

After

  1. 2.46 km W of Cobb, California · 14835 days ago · 0 km deep · 6 km away
  2. 2.16 km W of Cobb, California · 14835 days ago · 1 km deep · 6 km away
  3. 1.69 km W of Cobb, California · 14835 days ago · 1 km deep · 7 km away
  4. 2.09 km WSW of Cobb, California · 14835 days ago · 1 km deep · 7 km away
  5. 2.37 km WSW of Cobb, California · 14834 days ago · 0 km deep · 4 km away
  6. 1.68 km WSW of Cobb, California · 14834 days ago · 1 km deep · 6 km away
  7. 1.95 km WSW of Cobb, California · 14834 days ago · 0 km deep · 3 km away
  8. 1.85 km WSW of Cobb, California · 14834 days ago · -1 km deep · 3 km away
  9. 2.56 km ENE of Williams, California · 14833 days ago · 4 km deep · 72 km away
  10. 1.96 km W of Cobb, California · 14833 days ago · -1 km deep · 5 km away
  11. 1.5Northern California · 14833 days ago · 1 km deep · 6 km away
  12. 1.95 km WSW of Cobb, California · 14833 days ago · 1 km deep · 3 km away
  13. 2.35 km WSW of Cobb, California · 14833 days ago · 1 km deep · 3 km away
  14. 2.37 km WSW of Cobb, California · 14832 days ago · 2 km deep · 5 km away
  15. 1.821 km NE of Potter Valley, California · 14832 days ago · 6 km deep · 76 km away
  16. 1.85 km S of Moskowite Corner, California · 14831 days ago · 2 km deep · 65 km away
  17. 1.65 km WSW of Cobb, California · 14831 days ago · 4 km deep · 3 km away
  18. 1.87 km W of Cobb, California · 14831 days ago · 1 km deep · 6 km away
  19. 1.57 km WSW of Cobb, California · 14830 days ago · 0 km deep · 5 km away
  20. 2.27 km WSW of Cobb, California · 14830 days ago · 0 km deep · 5 km away
  21. 1.5Northern California · 14828 days ago · 1 km deep · 6 km away
  22. 2.22 km ENE of Calpella, California · 14828 days ago · 6 km deep · 62 km away
  23. 1.812 km ENE of Lower Lake, California · 14828 days ago · 11 km deep · 29 km away
  24. 2.36 km ENE of Rohnert Park, California · 14827 days ago · 6 km deep · 50 km away
  25. 2.25 km WSW of Cobb, California · 14826 days ago · 1 km deep · 3 km away
  26. 2.46 km W of Cobb, California · 14826 days ago · 4 km deep · 6 km away
  27. 1.719 km NE of Upper Lake, California · 14826 days ago · 9 km deep · 58 km away
  28. 1.98 km WNW of Cobb, California · 14826 days ago · 1 km deep · 9 km away
  29. 1.67 km W of Cobb, California · 14826 days ago · 4 km deep · 6 km away
  30. 1.87 km W of Cobb, California · 14825 days ago · 3 km deep · 6 km away
  31. 1.77 km W of Cobb, California · 14825 days ago · 3 km deep · 6 km away
  32. 1.97 km WSW of Cobb, California · 14825 days ago · 0 km deep · 5 km away
  33. 1.59 km NNE of Larkfield-Wikiup, California · 14825 days ago · 1 km deep · 21 km away
  34. 2.25 km W of Cobb, California · 14825 days ago · -1 km deep · 5 km away
  35. 1.56 km SW of Cobb, California · 14824 days ago · 2 km deep · 2 km away
  36. 2.23 km SSW of Guinda, California · 14824 days ago · 6 km deep · 46 km away
  37. 1.610 km N of Cloverdale, California · 14824 days ago · -1 km deep · 26 km away
  38. 1.65 km WSW of Cobb, California · 14823 days ago · 3 km deep · 3 km away
  39. 1.97 km WSW of Cobb, California · 14823 days ago · 0 km deep · 5 km away
  40. 2.119 km NNE of Upper Lake, California · 14823 days ago · 0 km deep · 61 km away
  41. 2.119 km NNE of Upper Lake, California · 14823 days ago · 5 km deep · 60 km away
  42. 2.26 km W of Cobb, California · 14823 days ago · -1 km deep · 6 km away
  43. 1.71 km SE of Clear Lake Riviera, California · 14822 days ago · 2 km deep · 18 km away
  44. 1.96 km SSW of Calistoga, California · 14821 days ago · 4 km deep · 31 km away
  45. 2.3Northern California · 14821 days ago · 4 km deep · 6 km away
  46. 2.58 km W of Cobb, California · 14821 days ago · 1 km deep · 7 km away
  47. 1.89 km W of Cobb, California · 14821 days ago · -1 km deep · 8 km away
  48. 1.67 km SSE of Cloverdale, California · 14821 days ago · 2 km deep · 20 km away
  49. 2.18 km W of Cobb, California · 14820 days ago · 1 km deep · 7 km away
  50. 1.87 km WSW of Cobb, California · 14820 days ago · 1 km deep · 4 km away
  51. 1.78 km W of Cobb, California · 14820 days ago · 1 km deep · 6 km away
  52. 2.06 km WSW of Cobb, California · 14819 days ago · 1 km deep · 4 km away
  53. 1.74 km WSW of Cobb, California · 14819 days ago · 0 km deep · 2 km away
  54. 1.85 km SW of Cobb, California · 14819 days ago · -1 km deep · 1 km away
  55. 1.75 km SW of Cobb, California · 14818 days ago · 1 km deep · 2 km away
  56. 2.18 km ESE of Willits, California · 14818 days ago · 3 km deep · 79 km away
  57. 2.38 km WSW of Cobb, California · 14818 days ago · 1 km deep · 5 km away
  58. 2.45 km WSW of Cobb, California · 14817 days ago · 4 km deep · 3 km away
  59. 1.76 km W of Cobb, California · 14817 days ago · 2 km deep · 5 km away
  60. 1.96 km W of Cobb, California · 14817 days ago · 2 km deep · 5 km away

The first 60 of 176.

Before

  1. 2.95 km WNW of Cobb, California · 14838 days ago · 2 km deep · 6 km away
  2. 2.65 km WNW of Cobb, California · 14838 days ago · 2 km deep · 6 km away
  3. 3.37 km W of Cobb, California · 14838 days ago · 4 km deep · 6 km away
  4. 3.57 km NW of Brooktrails, California · 14839 days ago · -1 km deep · 98 km away
  5. 3.24 km WSW of Cobb, California · 14840 days ago · 3 km deep · 3 km away
  6. 2.99 km W of Cobb, California · 14840 days ago · 2 km deep · 8 km away
  7. 2.34 km WSW of Cobb, California · 14841 days ago · 4 km deep · 3 km away
  8. 2.64 km SW of Cobb, California · 14841 days ago · 3 km deep · 2 km away
  9. 1.66 km W of Cobb, California · 14843 days ago · 3 km deep · 5 km away
  10. 2.78 km WSW of Cobb, California · 14843 days ago · 2 km deep · 5 km away
  11. 1.64 km W of Cobb, California · 14843 days ago · 0 km deep · 5 km away
  12. 1.64 km S of Cobb, California · 14844 days ago · 0 km deep · 2 km away
  13. 1.67 km WSW of Cobb, California · 14844 days ago · 1 km deep · 5 km away
  14. 2.417 km WSW of Elk Creek, California · 14844 days ago · 3 km deep · 82 km away
  15. 2.06 km W of Cobb, California · 14844 days ago · 1 km deep · 6 km away
  16. 2.18 km W of Cobb, California · 14845 days ago · 1 km deep · 7 km away
  17. 1.55 km SW of Cobb, California · 14845 days ago · 1 km deep · 2 km away
  18. 1.57 km W of Cobb, California · 14845 days ago · 1 km deep · 7 km away
  19. 1.66 km WNW of Cobb, California · 14845 days ago · 1 km deep · 7 km away
  20. 2.97 km E of Lower Lake, California · 14846 days ago · -1 km deep · 24 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc67516. Read Mon, Oct 5, 2026, 4:14 AM UTC.