California earthquakes

M2.9 earthquake 10 km NW of Philo, California

A magnitude 2.9 earthquake struck 10 km NW of Philo, California on Wed, Apr 16, 1986, 8:37 AM PST (16:37 UTC), 5 km (3 mi) below the surface.

A larger quake followed: M4.1 7 km W of Lodoga, California. This one was a foreshock.

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Map

Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude
2.9 (md), micro
Local time
UTC
1986-04-16 16:37:50 UTC
Depth
5.4 km (3.4 mi), shallow
Epicenter
39.145° N, 123.516° 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, 0.8 km in depth
Magnitude uncertainty
±0.09
Depth from
From location
Station coverage gap
119°
Stations used
29

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 96 in the 30 days before it.

After

  1. 1.57 km W of Cobb, California · 14774 days ago · 4 km deep · 71 km away
  2. 1.94 km W of Cobb, California · 14774 days ago · 1 km deep · 74 km away
  3. 1.77 km W of Cobb, California · 14774 days ago · 3 km deep · 71 km away
  4. 1.710 km SW of Boonville, California · 14773 days ago · 1 km deep · 22 km away
  5. 1.513 km SE of Laytonville, California · 14772 days ago · 5 km deep · 52 km away
  6. 1.710 km NNW of Redwood Valley, California · 14772 days ago · 7 km deep · 34 km away
  7. 2.46 km W of Cobb, California · 14771 days ago · 4 km deep · 72 km away
  8. 1.87 km W of Cobb, California · 14771 days ago · 3 km deep · 71 km away
  9. 1.66 km W of Cobb, California · 14771 days ago · 3 km deep · 71 km away
  10. 1.610 km WNW of Potter Valley, California · 14771 days ago · 7 km deep · 35 km away
  11. 2.58 km WSW of Cobb, California · 14771 days ago · 3 km deep · 72 km away
  12. 1.76 km SW of Cobb, California · 14771 days ago · 0 km deep · 76 km away
  13. 1.67 km WSW of Cobb, California · 14770 days ago · 3 km deep · 72 km away
  14. 2.35 km WSW of Cobb, California · 14770 days ago · 0 km deep · 75 km away
  15. 1.85 km WSW of Cobb, California · 14770 days ago · 0 km deep · 75 km away
  16. 2.211 km NE of Healdsburg, California · 14770 days ago · 3 km deep · 83 km away
  17. 1.94 km SSW of Cobb, California · 14769 days ago · 2 km deep · 77 km away
  18. 1.86 km WSW of Cobb, California · 14769 days ago · 2 km deep · 75 km away
  19. 1.78 km WSW of Cobb, California · 14769 days ago · 2 km deep · 72 km away
  20. 1.65 km W of Cobb, California · 14768 days ago · 0 km deep · 73 km away
  21. 1.65 km W of Cobb, California · 14768 days ago · 0 km deep · 73 km away
  22. 1.84 km W of Cobb, California · 14768 days ago · -1 km deep · 73 km away
  23. 1.76 km SW of Cobb, California · 14768 days ago · -1 km deep · 75 km away
  24. 2.24 km WNW of Cobb, California · 14768 days ago · 2 km deep · 73 km away
  25. 1.77 km W of Cobb, California · 14768 days ago · 2 km deep · 72 km away
  26. 1.93 km SW of Cobb, California · 14768 days ago · 1 km deep · 77 km away
  27. 1.82 km NNE of Talmage, California · 14766 days ago · 4 km deep · 31 km away
  28. 1.629 km NE of Potter Valley, California · 14765 days ago · 4 km deep · 68 km away
  29. 1.610 km NE of Talmage, California · 14765 days ago · 3 km deep · 38 km away
  30. 1.78 km WNW of Cloverdale, California · 14765 days ago · 2 km deep · 49 km away
  31. 1.95 km WNW of Cobb, California · 14765 days ago · 2 km deep · 72 km away
  32. 1.65 km WSW of Cobb, California · 14764 days ago · 1 km deep · 74 km away
  33. 1.87 km W of Cobb, California · 14763 days ago · 3 km deep · 71 km away
  34. 1.629 km NE of Potter Valley, California · 14763 days ago · 4 km deep · 68 km away
  35. 1.829 km NE of Potter Valley, California · 14763 days ago · 4 km deep · 68 km away
  36. 1.86 km WSW of Cobb, California · 14762 days ago · 1 km deep · 73 km away
  37. 2.23 km W of Cobb, California · 14762 days ago · 1 km deep · 74 km away
  38. 2.01 km SE of Larkfield-Wikiup, California · 14762 days ago · 4 km deep · 98 km away
  39. 1.97 km W of Cobb, California · 14761 days ago · 3 km deep · 72 km away
  40. 2.18 km WSW of Cobb, California · 14760 days ago · 4 km deep · 72 km away
  41. 2.37 km W of Cobb, California · 14760 days ago · 3 km deep · 71 km away
  42. 1.86 km W of Cobb, California · 14760 days ago · 3 km deep · 71 km away
  43. 1.66 km WSW of Cobb, California · 14760 days ago · 3 km deep · 73 km away
  44. 1.76 km W of Cobb, California · 14760 days ago · 4 km deep · 72 km away
  45. 1.97 km WSW of Cobb, California · 14759 days ago · 0 km deep · 73 km away
  46. 1.87 km W of Cobb, California · 14759 days ago · 3 km deep · 71 km away
  47. 1.97 km WSW of Cobb, California · 14758 days ago · 2 km deep · 73 km away
  48. 2.06 km SW of Cobb, California · 14758 days ago · 1 km deep · 75 km away
  49. 1.65 km SW of Cobb, California · 14758 days ago · 2 km deep · 75 km away
  50. 1.58 km WSW of Cobb, California · 14758 days ago · 4 km deep · 73 km away
  51. 1.76 km WSW of Cobb, California · 14757 days ago · 9 km deep · 73 km away
  52. 2.53 km SW of Cobb, California · 14757 days ago · 1 km deep · 77 km away
  53. 1.54 km S of Cobb, California · 14756 days ago · 2 km deep · 79 km away
  54. 1.55 km WSW of Cobb, California · 14756 days ago · 1 km deep · 74 km away
  55. 2.00 km W of Clear Lake Riviera, California · 14756 days ago · 0 km deep · 71 km away
  56. 1.74 km WSW of Cobb, California · 14756 days ago · 1 km deep · 75 km away
  57. 1.66 km W of Cobb, California · 14755 days ago · 3 km deep · 72 km away
  58. 1.75 km WNW of Cobb, California · 14755 days ago · 3 km deep · 72 km away
  59. 1.67 km W of Cobb, California · 14754 days ago · 0 km deep · 72 km away
  60. 3.612 km W of Ukiah, California · 14754 days ago · 26 km deep · 14 km away

The first 60 of 153.

Before

  1. 1.97 km W of Cobb, California · 14775 days ago · 3 km deep · 71 km away
  2. 1.73 km NNW of Clear Lake Riviera, California · 14777 days ago · -1 km deep · 70 km away
  3. 1.65 km WSW of Cobb, California · 14777 days ago · -1 km deep · 74 km away
  4. 1.66 km WSW of Cobb, California · 14777 days ago · 0 km deep · 74 km away
  5. 1.77 km WSW of Cobb, California · 14778 days ago · 4 km deep · 72 km away
  6. 2.111 km ESE of Willits, California · 14778 days ago · 7 km deep · 34 km away
  7. 1.96 km W of Cobb, California · 14778 days ago · 2 km deep · 72 km away
  8. 1.84 km WSW of Cobb, California · 14779 days ago · 1 km deep · 74 km away
  9. 1.96 km SW of Cobb, California · 14779 days ago · 1 km deep · 76 km away
  10. 1.78 km W of Cobb, California · 14779 days ago · 2 km deep · 70 km away
  11. 2.18 km WSW of Cobb, California · 14780 days ago · -1 km deep · 71 km away
  12. 1.55 km W of Cobb, California · 14780 days ago · 0 km deep · 73 km away
  13. 2.06 km W of Cobb, California · 14780 days ago · 2 km deep · 72 km away
  14. 1.56 km W of Cobb, California · 14781 days ago · 2 km deep · 72 km away
  15. 1.75 km S of Cobb, California · 14783 days ago · 2 km deep · 80 km away
  16. 1.97 km WSW of Cobb, California · 14784 days ago · 1 km deep · 72 km away
  17. 1.77 km WSW of Cobb, California · 14784 days ago · 4 km deep · 73 km away
  18. 1.77 km WSW of Cobb, California · 14785 days ago · 0 km deep · 72 km away
  19. 1.76 km W of Cobb, California · 14785 days ago · 2 km deep · 72 km away
  20. 1.614 km SE of Laytonville, California · 14786 days ago · 7 km deep · 51 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc70390. Read Sun, Sep 27, 2026, 9:41 PM UTC.