California earthquakes

M1.5 earthquake 4 km S of Cobb, California

A magnitude 1.5 earthquake struck 4 km S of Cobb, California on Sun, May 4, 1986, 7:16 AM PDT (14:16 UTC), 2 km (1 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.

Open the live map with earthquakes

The earthquake

Magnitude
1.5 (md), micro
Local time
UTC
1986-05-04 14:16:39 UTC
Depth
1.8 km (1.1 mi), shallow
Epicenter
38.782° N, 122.725° 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, 0.3 km in depth
Magnitude uncertainty
±0.15
Depth from
From location
Station coverage gap
96°
Stations used
14

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 157 in the 60 days after this one and 83 in the 30 days before it.

After

  1. 1.55 km WSW of Cobb, California · 14756 days ago · 1 km deep · 5 km away
  2. 2.00 km W of Clear Lake Riviera, California · 14756 days ago · 0 km deep · 19 km away
  3. 1.74 km WSW of Cobb, California · 14756 days ago · 1 km deep · 5 km away
  4. 1.66 km W of Cobb, California · 14756 days ago · 3 km deep · 8 km away
  5. 1.75 km WNW of Cobb, California · 14755 days ago · 3 km deep · 8 km away
  6. 1.67 km W of Cobb, California · 14755 days ago · 0 km deep · 8 km away
  7. 3.612 km W of Ukiah, California · 14754 days ago · 26 km deep · 68 km away
  8. 1.67 km W of Cobb, California · 14754 days ago · 3 km deep · 8 km away
  9. 1.67 km SSE of Willits, California · 14753 days ago · 4 km deep · 81 km away
  10. 2.25 km SW of Cobb, California · 14753 days ago · 1 km deep · 3 km away
  11. 2.05 km SW of Cobb, California · 14753 days ago · 0 km deep · 4 km away
  12. 1.85 km SW of Cobb, California · 14752 days ago · 0 km deep · 5 km away
  13. 4.17 km W of Lodoga, California · 14752 days ago · 3 km deep · 60 km away
  14. 1.84 km WSW of Cobb, California · 14752 days ago · 1 km deep · 6 km away
  15. 1.65 km WSW of Cobb, California · 14752 days ago · 1 km deep · 6 km away
  16. 2.15 km W of Cobb, California · 14752 days ago · 0 km deep · 7 km away
  17. 2.14 km NNW of Cobb, California · 14750 days ago · 0 km deep · 8 km away
  18. 1.64 km W of Cobb, California · 14750 days ago · 0 km deep · 6 km away
  19. 1.86 km W of Cobb, California · 14750 days ago · 3 km deep · 8 km away
  20. 1.77 km W of Cobb, California · 14750 days ago · 3 km deep · 8 km away
  21. 1.76 km W of Cobb, California · 14749 days ago · 0 km deep · 8 km away
  22. 3.06 km WSW of Cobb, California · 14749 days ago · -1 km deep · 6 km away
  23. 1.723 km ENE of Potter Valley, California · 14748 days ago · 9 km deep · 71 km away
  24. 2.07 km W of Cobb, California · 14748 days ago · 3 km deep · 8 km away
  25. 2.17 km WSW of Cobb, California · 14747 days ago · 1 km deep · 7 km away
  26. 2.16 km W of Cobb, California · 14747 days ago · 4 km deep · 8 km away
  27. 1.64 km WSW of Cobb, California · 14747 days ago · 2 km deep · 5 km away
  28. 2.25 km WSW of Cobb, California · 14746 days ago · 4 km deep · 5 km away
  29. 2.45 km WSW of Cobb, California · 14746 days ago · 3 km deep · 5 km away
  30. 2.02 km S of Clearlake, California · 14746 days ago · 5 km deep · 19 km away
  31. 2.86 km W of Cobb, California · 14746 days ago · 2 km deep · 8 km away
  32. 2.413 km NNW of Moskowite Corner, California · 14745 days ago · 11 km deep · 48 km away
  33. 2.513 km NNW of Moskowite Corner, California · 14745 days ago · 6 km deep · 47 km away
  34. 2.213 km NNW of Moskowite Corner, California · 14745 days ago · 3 km deep · 47 km away
  35. 1.65 km W of Willows, California · 14744 days ago · 5 km deep · 91 km away
  36. 1.66 km ESE of Geyserville, California · 14744 days ago · 6 km deep · 15 km away
  37. 1.66 km W of Cobb, California · 14743 days ago · 0 km deep · 8 km away
  38. 2.55 km SW of Cobb, California · 14743 days ago · 1 km deep · 4 km away
  39. 1.88 km W of Cobb, California · 14743 days ago · 3 km deep · 9 km away
  40. 2.811 km ESE of Hopland, California · 14742 days ago · 0 km deep · 28 km away
  41. 2.55 km SW of Cobb, California · 14742 days ago · 0 km deep · 3 km away
  42. 2.57 km WSW of Cobb, California · 14742 days ago · -1 km deep · 6 km away
  43. 1.97 km W of Cobb, California · 14742 days ago · 3 km deep · 8 km away
  44. 2.57 km ENE of Brooktrails, California · 14742 days ago · 4 km deep · 91 km away
  45. 2.86 km W of Cobb, California · 14742 days ago · 3 km deep · 8 km away
  46. 1.57 km WSW of Cobb, California · 14741 days ago · 3 km deep · 8 km away
  47. 2.412 km ESE of Hidden Valley Lake, California · 14741 days ago · -1 km deep · 27 km away
  48. 2.16 km W of Cobb, California · 14741 days ago · 2 km deep · 7 km away
  49. 1.67 km W of Cobb, California · 14741 days ago · -1 km deep · 8 km away
  50. 2.26 km WNW of Cobb, California · 14740 days ago · -1 km deep · 9 km away
  51. 1.57 km W of Cobb, California · 14740 days ago · 3 km deep · 8 km away
  52. 1.86 km SW of Cobb, California · 14740 days ago · 1 km deep · 4 km away
  53. 2.59 km W of Cobb, California · 14740 days ago · 0 km deep · 10 km away
  54. 1.55 km WSW of Cobb, California · 14739 days ago · 3 km deep · 6 km away
  55. 1.69 km W of Cobb, California · 14739 days ago · 2 km deep · 11 km away
  56. 1.911 km NNE of Geyserville, California · 14739 days ago · 3 km deep · 12 km away
  57. 1.66 km W of Cobb, California · 14739 days ago · 3 km deep · 8 km away
  58. 1.68 km W of Cobb, California · 14739 days ago · 2 km deep · 10 km away
  59. 1.65 km WNW of Cobb, California · 14739 days ago · 1 km deep · 8 km away
  60. 2.4Northern California · 14738 days ago · 1 km deep · 7 km away

The first 60 of 157.

Before

  1. 2.53 km SW of Cobb, California · 14757 days ago · 1 km deep · 3 km away
  2. 1.713 km SE of Hidden Valley Lake, California · 14757 days ago · -1 km deep · 25 km away
  3. 1.76 km WSW of Cobb, California · 14757 days ago · 9 km deep · 7 km away
  4. 1.58 km WSW of Cobb, California · 14758 days ago · 4 km deep · 7 km away
  5. 1.65 km SW of Cobb, California · 14758 days ago · 2 km deep · 5 km away
  6. 2.06 km SW of Cobb, California · 14758 days ago · 1 km deep · 5 km away
  7. 1.97 km WSW of Cobb, California · 14758 days ago · 2 km deep · 7 km away
  8. 1.87 km W of Cobb, California · 14759 days ago · 3 km deep · 8 km away
  9. 1.97 km WSW of Cobb, California · 14759 days ago · 0 km deep · 6 km away
  10. 1.76 km W of Cobb, California · 14760 days ago · 4 km deep · 8 km away
  11. 1.66 km WSW of Cobb, California · 14760 days ago · 3 km deep · 7 km away
  12. 2.02 km SSW of Green Valley, California · 14760 days ago · 6 km deep · 78 km away
  13. 2.14 km SW of Oakville, California · 14760 days ago · 11 km deep · 49 km away
  14. 1.86 km W of Cobb, California · 14760 days ago · 3 km deep · 8 km away
  15. 2.37 km W of Cobb, California · 14761 days ago · 3 km deep · 8 km away
  16. 2.18 km WSW of Cobb, California · 14761 days ago · 4 km deep · 8 km away
  17. 1.97 km W of Cobb, California · 14761 days ago · 3 km deep · 8 km away
  18. 2.01 km SE of Larkfield-Wikiup, California · 14762 days ago · 4 km deep · 31 km away
  19. 2.23 km W of Cobb, California · 14762 days ago · 1 km deep · 6 km away
  20. 1.86 km WSW of Cobb, California · 14762 days ago · 1 km deep · 7 km away

Earthquakes todayCalifornia earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc71920. Read Sun, Sep 27, 2026, 11:33 PM UTC.