California earthquakes

M2.8 earthquake 12 km WSW of Byron, California

A magnitude 2.8 earthquake struck 12 km WSW of Byron, California on Tue, Aug 10, 1982, 10:03 PM PDT (05:03 UTC), 16 km (10 mi) below the surface.

A larger quake followed: M4.5 8 km NE of Corralitos, California. This one was a foreshock.

Byron 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
2.8 (md), micro
Local time
UTC
1982-08-11 05:03:29 UTC
Depth
16.4 km (10.2 mi), shallow
Epicenter
37.832° N, 121.767° 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 0.3 km horizontally, 0.3 km in depth
Magnitude uncertainty
±0.17
Depth from
From location
Station coverage gap
123°
Stations used
67

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 72 in the 60 days after this one and 35 in the 30 days before it.

After

  1. 1.68 km WSW of Gilroy, California · 16119 days ago · 2 km deep · 94 km away
  2. 1.97 km NE of Interlaken, California · 16119 days ago · 3 km deep · 94 km away
  3. 2.44 km SW of Green Valley, California · 16118 days ago · 12 km deep · 57 km away
  4. 1.54 km NNE of Vine Hill, California · 16118 days ago · 16 km deep · 36 km away
  5. 1.68 km N of Day Valley, California · 16117 days ago · 12 km deep · 80 km away
  6. 1.98 km ENE of Interlaken, California · 16116 days ago · 3 km deep · 94 km away
  7. 1.98 km WSW of Gilroy, California · 16116 days ago · 3 km deep · 94 km away
  8. 2.70 km SE of Concord, California · 16114 days ago · 14 km deep · 27 km away
  9. 4.58 km NE of Corralitos, California · 16114 days ago · 12 km deep · 89 km away
  10. 1.72 km SW of Dublin, California · 16113 days ago · 9 km deep · 23 km away
  11. 1.71 km S of Concord, California · 16113 days ago · 11 km deep · 27 km away
  12. 1.912 km WSW of Byron, California · 16113 days ago · 15 km deep · 1 km away
  13. 1.60 km SSE of Concord, California · 16113 days ago · 11 km deep · 27 km away
  14. 3.31 km SW of Dublin, California · 16113 days ago · 10 km deep · 23 km away
  15. 1.80 km SSE of Concord, California · 16112 days ago · 13 km deep · 28 km away
  16. 3.32 km SSW of Dublin, California · 16111 days ago · 10 km deep · 23 km away
  17. 1.813 km SE of Livermore, California · 16110 days ago · 6 km deep · 27 km away
  18. 1.714 km NNE of Morgan Hill, California · 16108 days ago · 7 km deep · 66 km away
  19. 1.92 km NNW of Kensington, California · 16108 days ago · 9 km deep · 47 km away
  20. 1.87 km E of East Foothills, California · 16108 days ago · 9 km deep · 49 km away
  21. 3.98 km N of East Foothills, California · 16107 days ago · 6 km deep · 41 km away
  22. 1.91 km N of Orinda, California · 16106 days ago · 6 km deep · 37 km away
  23. 2.75 km SSW of Gilroy, California · 16105 days ago · 4 km deep · 98 km away
  24. 1.814 km E of East Foothills, California · 16104 days ago · 5 km deep · 49 km away
  25. 1.710 km E of Blackhawk, California · 16104 days ago · 10 km deep · 2 km away
  26. 3.812 km E of Blackhawk, California · 16104 days ago · 15 km deep · 1 km away
  27. 2.311 km E of Blackhawk, California · 16104 days ago · 11 km deep · 1 km away
  28. 2.611 km E of Blackhawk, California · 16104 days ago · 14 km deep · 1 km away
  29. 1.610 km E of Blackhawk, California · 16104 days ago · 10 km deep · 2 km away
  30. 1.810 km E of Blackhawk, California · 16104 days ago · 10 km deep · 2 km away
  31. 1.55 km NNE of Kenwood, California · 16103 days ago · 5 km deep · 95 km away
  32. 1.97 km WSW of Gilroy, California · 16103 days ago · 5 km deep · 95 km away
  33. 2.17 km WSW of Gilroy, California · 16103 days ago · 5 km deep · 95 km away
  34. 2.03 km NE of Fremont, California · 16102 days ago · 9 km deep · 34 km away
  35. 1.65 km WSW of Green Valley, California · 16101 days ago · 5 km deep · 60 km away
  36. 2.31 km SSE of Concord, California · 16100 days ago · 12 km deep · 27 km away
  37. 1.70 km N of Pittsburg, California · 16100 days ago · 16 km deep · 24 km away
  38. 1.72 km E of East Foothills, California · 16096 days ago · 4 km deep · 50 km away
  39. 1.98 km ENE of Milpitas, California · 16095 days ago · 2 km deep · 42 km away
  40. 2.30 km SE of Concord, California · 16095 days ago · 7 km deep · 28 km away
  41. 1.74 km WNW of Newman, California · 16095 days ago · 12 km deep · 83 km away
  42. 1.710 km ENE of Blackhawk, California · 16094 days ago · 12 km deep · 2 km away
  43. 1.65 km WNW of Newman, California · 16094 days ago · 5 km deep · 82 km away
  44. 1.64 km SW of Saint Helena, California · 16093 days ago · 5 km deep · 96 km away
  45. 1.811 km NW of Moskowite Corner, California · 16093 days ago · -1 km deep · 89 km away
  46. 2.16 km WSW of Gilroy, California · 16092 days ago · 5 km deep · 95 km away
  47. 1.515 km N of Morgan Hill, California · 16091 days ago · 6 km deep · 63 km away
  48. 3.16 km ENE of East Foothills, California · 16090 days ago · 8 km deep · 47 km away
  49. 1.86 km ENE of East Foothills, California · 16090 days ago · 7 km deep · 48 km away
  50. 2.23 km WSW of Clayton, California · 16089 days ago · 13 km deep · 21 km away
  51. 2.07 km NNE of East Foothills, California · 16085 days ago · 7 km deep · 43 km away
  52. 2.411 km ESE of East Foothills, California · 16084 days ago · 8 km deep · 55 km away
  53. 1.82 km ENE of Inverness, California · 16082 days ago · 2 km deep · 98 km away
  54. 1.89 km N of East Foothills, California · 16082 days ago · 6 km deep · 41 km away
  55. 1.79 km NE of San Martin, California · 16082 days ago · 8 km deep · 80 km away
  56. 1.914 km N of Morgan Hill, California · 16081 days ago · 5 km deep · 65 km away
  57. 1.64 km ESE of San Ramon, California · 16077 days ago · 8 km deep · 17 km away
  58. 1.93 km W of Livermore, California · 16076 days ago · 14 km deep · 18 km away
  59. 1.817 km NE of East Foothills, California · 16075 days ago · 7 km deep · 37 km away
  60. 2.15 km SSW of Gilroy, California · 16075 days ago · 4 km deep · 98 km away

The first 60 of 72.

Before

  1. 1.55 km ESE of East Foothills, California · 16122 days ago · 2 km deep · 52 km away
  2. 1.92 km NW of Glen Ellen, California · 16123 days ago · 9 km deep · 91 km away
  3. 1.82 km NNW of Glen Ellen, California · 16123 days ago · 10 km deep · 91 km away
  4. 2.02 km NW of Glen Ellen, California · 16123 days ago · 8 km deep · 92 km away
  5. 1.83 km WNW of Daly City, California · 16123 days ago · 5 km deep · 65 km away
  6. 2.71 km NW of Rollingwood, California · 16124 days ago · 7 km deep · 53 km away
  7. 1.9Northern California · 16125 days ago · 3 km deep · 87 km away
  8. 2.05 km WSW of Gilroy, California · 16127 days ago · 8 km deep · 95 km away
  9. 1.92 km SE of Pacifica, California · 16128 days ago · 10 km deep · 67 km away
  10. 1.515 km SE of Livermore, California · 16128 days ago · 2 km deep · 31 km away
  11. 1.73 km SW of Rutherford, California · 16129 days ago · 4 km deep · 90 km away
  12. 2.29 km ESE of East Foothills, California · 16130 days ago · 8 km deep · 54 km away
  13. 2.21 km ENE of San Ramon, California · 16132 days ago · 9 km deep · 18 km away
  14. 1.89 km N of Rio Vista, California · 16137 days ago · 15 km deep · 46 km away
  15. 1.77 km ESE of Clayton, California · 16138 days ago · 14 km deep · 12 km away
  16. 1.614 km ENE of East Foothills, California · 16138 days ago · 5 km deep · 47 km away
  17. 2.27 km E of Gilroy, California · 16138 days ago · 4 km deep · 94 km away
  18. 2.57 km E of Gilroy, California · 16138 days ago · 4 km deep · 94 km away
  19. 2.011 km SW of Brentwood, California · 16140 days ago · 16 km deep · 3 km away
  20. 1.91 km WNW of Concord, California · 16140 days ago · 14 km deep · 30 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1077301. Read Wed, Sep 30, 2026, 2:30 AM UTC.