California earthquakes

M1.7 earthquake 3 km E of Berkeley, California

A magnitude 1.7 earthquake struck 3 km E of Berkeley, California on Thu, Feb 20, 1986, 6:39 PM PST (02:39 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M5.7 15 km NE of East Foothills, California. This one was a foreshock.

Berkeley 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
1.7 (md), micro
Local time
UTC
1986-02-21 02:39:40 UTC
Depth
9.8 km (6.1 mi), shallow
Epicenter
37.868° N, 122.237° 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 0.1 km horizontally, 0.5 km in depth
Magnitude uncertainty
±0.22
Depth from
From location
Station coverage gap
65°
Stations used
30

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 184 in the 60 days after this one and 62 in the 30 days before it.

After

  1. 1.715 km N of Morgan Hill, California · 14831 days ago · 6 km deep · 84 km away
  2. 2.18 km NE of East Foothills, California · 14829 days ago · 6 km deep · 65 km away
  3. 2.18 km ENE of Morgan Hill, California · 14828 days ago · 4 km deep · 97 km away
  4. 1.714 km E of Seven Trees, California · 14828 days ago · 2 km deep · 81 km away
  5. 1.612 km ESE of East Foothills, California · 14828 days ago · 7 km deep · 77 km away
  6. 1.614 km E of Seven Trees, California · 14828 days ago · 1 km deep · 81 km away
  7. 1.78 km NNE of Bay Point, California · 14827 days ago · 5 km deep · 37 km away
  8. 2.114 km E of Seven Trees, California · 14827 days ago · 1 km deep · 81 km away
  9. 1.85 km S of Moskowite Corner, California · 14826 days ago · 2 km deep · 59 km away
  10. 1.715 km SSE of Pescadero, California · 14825 days ago · 5 km deep · 84 km away
  11. 2.58 km SE of La Honda, California · 14823 days ago · 7 km deep · 67 km away
  12. 2.36 km ENE of Rohnert Park, California · 14822 days ago · 6 km deep · 64 km away
  13. 1.81 km SSE of East Richmond Heights, California · 14821 days ago · 3 km deep · 9 km away
  14. 1.59 km NNE of Larkfield-Wikiup, California · 14820 days ago · 1 km deep · 91 km away
  15. 1.58 km ENE of Morgan Hill, California · 14820 days ago · 4 km deep · 97 km away
  16. 1.73 km S of Fairview, California · 14818 days ago · 3 km deep · 30 km away
  17. 1.51 km NNE of Kensington, California · 14818 days ago · 5 km deep · 7 km away
  18. 1.714 km E of Seven Trees, California · 14817 days ago · 1 km deep · 81 km away
  19. 1.96 km SSW of Calistoga, California · 14817 days ago · 4 km deep · 80 km away
  20. 1.614 km E of Seven Trees, California · 14816 days ago · 1 km deep · 82 km away
  21. 1.714 km E of Seven Trees, California · 14816 days ago · 3 km deep · 81 km away
  22. 3.02 km SW of Broadmoor, California · 14815 days ago · 5 km deep · 32 km away
  23. 2.52 km SW of Broadmoor, California · 14815 days ago · 5 km deep · 32 km away
  24. 1.715 km N of Morgan Hill, California · 14814 days ago · 6 km deep · 84 km away
  25. 1.73 km N of East Foothills, California · 14812 days ago · 0 km deep · 62 km away
  26. 2.015 km N of Morgan Hill, California · 14808 days ago · 2 km deep · 84 km away
  27. 2.35 km E of Fremont, California · 14807 days ago · 9 km deep · 45 km away
  28. 1.79 km ENE of Morgan Hill, California · 14807 days ago · 5 km deep · 99 km away
  29. 1.613 km N of Morgan Hill, California · 14805 days ago · 3 km deep · 87 km away
  30. 1.52 km SSE of Roseland, California · 14804 days ago · 4 km deep · 73 km away
  31. 1.515 km NE of East Foothills, California · 14804 days ago · 8 km deep · 65 km away
  32. 2.014 km E of Seven Trees, California · 14803 days ago · 2 km deep · 81 km away
  33. 2.113 km ESE of East Foothills, California · 14803 days ago · 8 km deep · 78 km away
  34. 2.19 km E of Elmira, California · 14800 days ago · 17 km deep · 64 km away
  35. 2.915 km NE of East Foothills, California · 14800 days ago · 9 km deep · 65 km away
  36. 2.616 km NE of East Foothills, California · 14800 days ago · 8 km deep · 65 km away
  37. 1.616 km NE of East Foothills, California · 14800 days ago · 8 km deep · 65 km away
  38. 1.9Northern California · 14800 days ago · 8 km deep · 65 km away
  39. 1.82 km ENE of Diablo, California · 14798 days ago · 8 km deep · 27 km away
  40. 2.11 km NW of Concord, California · 14798 days ago · 15 km deep · 22 km away
  41. 3.214 km N of Morgan Hill, California · 14796 days ago · 6 km deep · 86 km away
  42. 4.12 km W of Orinda, California · 14795 days ago · 12 km deep · 3 km away
  43. 1.82 km WSW of Orinda, California · 14795 days ago · 9 km deep · 2 km away
  44. 2.42 km W of Orinda, California · 14795 days ago · 11 km deep · 2 km away
  45. 1.83 km W of Orinda, California · 14795 days ago · 11 km deep · 2 km away
  46. 1.93 km W of Orinda, California · 14795 days ago · 10 km deep · 2 km away
  47. 2.33 km W of Orinda, California · 14795 days ago · 9 km deep · 2 km away
  48. 2.13 km W of Orinda, California · 14795 days ago · 9 km deep · 2 km away
  49. 2.42 km W of Orinda, California · 14795 days ago · 10 km deep · 2 km away
  50. 1.63 km W of Orinda, California · 14795 days ago · 9 km deep · 2 km away
  51. 2.32 km W of Orinda, California · 14794 days ago · 11 km deep · 3 km away
  52. 1.82 km W of Orinda, California · 14794 days ago · 10 km deep · 3 km away
  53. 1.63 km W of Orinda, California · 14794 days ago · 10 km deep · 2 km away
  54. 2.00 km NNW of Concord, California · 14794 days ago · 16 km deep · 22 km away
  55. 2.715 km NE of East Foothills, California · 14793 days ago · 8 km deep · 65 km away
  56. 2.62 km W of Orinda, California · 14793 days ago · 11 km deep · 2 km away
  57. 2.32 km W of Orinda, California · 14793 days ago · 11 km deep · 3 km away
  58. 1.93 km W of Orinda, California · 14793 days ago · 10 km deep · 2 km away
  59. 1.82 km W of Orinda, California · 14793 days ago · 10 km deep · 2 km away
  60. 5.715 km NE of East Foothills, California · 14793 days ago · 9 km deep · 65 km away

The first 60 of 184.

Before

  1. 2.011 km NE of Morgan Hill, California · 14831 days ago · 5 km deep · 94 km away
  2. 2.25 km W of Diablo Grande, California · 14832 days ago · -1 km deep · 94 km away
  3. 1.62 km SSW of Blackhawk, California · 14832 days ago · 13 km deep · 29 km away
  4. 1.913 km N of Morgan Hill, California · 14832 days ago · 5 km deep · 86 km away
  5. 2.31 km SSW of Blackhawk, California · 14832 days ago · 13 km deep · 29 km away
  6. 1.716 km N of Morgan Hill, California · 14834 days ago · 6 km deep · 84 km away
  7. 2.23 km ESE of Berkeley, California · 14834 days ago · 7 km deep · 1 km away
  8. 2.012 km N of Livermore, California · 14834 days ago · 11 km deep · 43 km away
  9. 1.613 km E of Seven Trees, California · 14834 days ago · 5 km deep · 79 km away
  10. 1.66 km SSW of Sunol, California · 14834 days ago · 5 km deep · 46 km away
  11. 1.92 km SSW of Blackhawk, California · 14835 days ago · 13 km deep · 29 km away
  12. 2.67 km S of Sunol, California · 14835 days ago · 7 km deep · 48 km away
  13. 3.31 km SSW of Blackhawk, California · 14835 days ago · 15 km deep · 29 km away
  14. 2.87 km S of Sunol, California · 14837 days ago · 7 km deep · 48 km away
  15. 1.618 km ESE of East Foothills, California · 14838 days ago · 2 km deep · 82 km away
  16. 1.611 km SE of La Honda, California · 14839 days ago · 8 km deep · 69 km away
  17. 1.812 km SE of La Honda, California · 14839 days ago · 9 km deep · 69 km away
  18. 1.99 km ESE of East Foothills, California · 14840 days ago · 5 km deep · 73 km away
  19. 1.615 km E of Seven Trees, California · 14841 days ago · 3 km deep · 82 km away
  20. 2.116 km NE of East Foothills, California · 14841 days ago · 6 km deep · 63 km away

Earthquakes todayCalifornia earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc66786. Read Wed, Sep 30, 2026, 6:15 AM UTC.