California earthquakes

M2.5 earthquake 1 km NNW of Concord, California

A magnitude 2.5 earthquake struck 1 km NNW of Concord, California on Sat, Nov 10, 1979, 1:42 AM PST (09:42 UTC), 15 km (9 mi) below the surface.

A larger quake followed: M3.3 16 km ENE of East Foothills, California. This one was a foreshock.

Concord 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
2.5 (md), micro
Local time
UTC
1979-11-10 09:42:44 UTC
Depth
14.7 km (9.1 mi), shallow
Epicenter
37.992° N, 122.042° 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
±0.08
Depth from
From location
Station coverage gap
118°
Stations used
35

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 62 in the 60 days after this one and 29 in the 30 days before it.

After

  1. 1.91 km SSW of Fairview, California · 17117 days ago · 5 km deep · 37 km away
  2. 2.12 km SSW of Fairview, California · 17116 days ago · 6 km deep · 37 km away
  3. 1.813 km N of Morgan Hill, California · 17116 days ago · 4 km deep · 90 km away
  4. 1.73 km E of Cambrian Park, California · 17114 days ago · 4 km deep · 83 km away
  5. 2.04 km NNE of East Foothills, California · 17113 days ago · 1 km deep · 68 km away
  6. 3.316 km ENE of East Foothills, California · 17113 days ago · 5 km deep · 73 km away
  7. 1.713 km NNE of Day Valley, California · 17112 days ago · 3 km deep · 95 km away
  8. 2.85 km WSW of Glen Ellen, California · 17111 days ago · 7 km deep · 61 km away
  9. 1.75 km E of East Foothills, California · 17111 days ago · 2 km deep · 73 km away
  10. 1.716 km SE of Livermore, California · 17110 days ago · 5 km deep · 58 km away
  11. 1.625 km ENE of East Foothills, California · 17109 days ago · 4 km deep · 70 km away
  12. 1.99 km ESE of East Foothills, California · 17109 days ago · 7 km deep · 76 km away
  13. 1.81 km S of Campbell, California · 17107 days ago · 6 km deep · 81 km away
  14. 2.27 km E of East Foothills, California · 17106 days ago · 7 km deep · 73 km away
  15. 2.810 km NE of Healdsburg, California · 17103 days ago · 5 km deep · 98 km away
  16. 1.611 km NE of Healdsburg, California · 17102 days ago · 4 km deep · 98 km away
  17. 1.513 km E of Seven Trees, California · 17102 days ago · 5 km deep · 82 km away
  18. 1.91 km WNW of Cambrian Park, California · 17102 days ago · 5 km deep · 81 km away
  19. 2.010 km NE of Healdsburg, California · 17102 days ago · 4 km deep · 98 km away
  20. 3.03 km NW of Diablo, California · 17102 days ago · 8 km deep · 16 km away
  21. 3.23 km ENE of Alamo, California · 17102 days ago · 8 km deep · 15 km away
  22. 2.110 km NE of Healdsburg, California · 17101 days ago · 5 km deep · 98 km away
  23. 1.811 km NE of Healdsburg, California · 17101 days ago · 5 km deep · 98 km away
  24. 1.511 km ENE of Healdsburg, California · 17101 days ago · 0 km deep · 98 km away
  25. 2.011 km NE of Healdsburg, California · 17101 days ago · 5 km deep · 98 km away
  26. 1.81 km NNE of San Ramon, California · 17099 days ago · 8 km deep · 23 km away
  27. 1.95 km NNE of Kenwood, California · 17099 days ago · 9 km deep · 67 km away
  28. 2.43 km SE of Pittsburg, California · 17097 days ago · 17 km deep · 16 km away
  29. 1.73 km ESE of Piedmont, California · 17097 days ago · 10 km deep · 25 km away
  30. 1.83 km W of Milpitas, California · 17092 days ago · 15 km deep · 64 km away
  31. 1.94 km SSE of Sunol, California · 17091 days ago · 8 km deep · 51 km away
  32. 1.66 km ENE of East Foothills, California · 17090 days ago · 6 km deep · 71 km away
  33. 3.03 km NE of San Leandro, California · 17087 days ago · 6 km deep · 28 km away
  34. 2.09 km NE of Morgan Hill, California · 17085 days ago · 8 km deep · 98 km away
  35. 2.12 km SSE of Concord, California · 17081 days ago · 19 km deep · 4 km away
  36. 1.811 km SSE of Livermore, California · 17080 days ago · 5 km deep · 54 km away
  37. 1.97 km NNE of Black Point-Green Point, California · 17080 days ago · 7 km deep · 44 km away
  38. 1.88 km NNE of East Foothills, California · 17079 days ago · 4 km deep · 65 km away
  39. 1.84 km E of South San Francisco, California · 17079 days ago · 10 km deep · 47 km away
  40. 1.51 km SW of North Gate, California · 17079 days ago · 6 km deep · 11 km away
  41. 1.87 km ENE of East Foothills, California · 17078 days ago · 5 km deep · 69 km away
  42. 2.64 km E of South San Francisco, California · 17078 days ago · 9 km deep · 46 km away
  43. 2.08 km E of East Foothills, California · 17078 days ago · 8 km deep · 74 km away
  44. 2.33 km WSW of Cupertino, California · 17077 days ago · 5 km deep · 76 km away
  45. 1.616 km E of Seven Trees, California · 17076 days ago · 7 km deep · 85 km away
  46. 2.33 km SSW of Broadmoor, California · 17075 days ago · 7 km deep · 55 km away
  47. 1.76 km NNE of Dixon, California · 17075 days ago · 10 km deep · 60 km away
  48. 1.618 km E of East Foothills, California · 17073 days ago · 4 km deep · 80 km away
  49. 2.211 km ESE of East Foothills, California · 17073 days ago · 7 km deep · 79 km away
  50. 1.89 km NW of Montalvin, California · 17072 days ago · 4 km deep · 33 km away
  51. 2.62 km NW of Concord, California · 17070 days ago · 16 km deep · 1 km away
  52. 1.817 km ENE of East Foothills, California · 17070 days ago · 6 km deep · 73 km away
  53. 2.32 km ENE of Pacheco, California · 17070 days ago · 16 km deep · 1 km away
  54. 1.96 km NE of East Foothills, California · 17069 days ago · 8 km deep · 67 km away
  55. 2.44 km ESE of Lexington Hills, California · 17069 days ago · 11 km deep · 94 km away
  56. 1.73 km NNE of Alamo, California · 17067 days ago · 1 km deep · 13 km away
  57. 2.23 km ESE of Berkeley, California · 17066 days ago · 8 km deep · 22 km away
  58. 2.422 km WNW of Diablo Grande, California · 17066 days ago · 6 km deep · 75 km away
  59. 2.322 km E of East Foothills, California · 17063 days ago · 6 km deep · 78 km away
  60. 1.54 km SSE of Sunol, California · 17062 days ago · 8 km deep · 51 km away

The first 60 of 62.

Before

  1. 2.121 km E of East Foothills, California · 17118 days ago · 3 km deep · 82 km away
  2. 1.76 km ENE of Windsor, California · 17120 days ago · 4 km deep · 90 km away
  3. 2.43 km ESE of Lexington Hills, California · 17120 days ago · 13 km deep · 94 km away
  4. 2.29 km E of Angwin, California · 17121 days ago · 7 km deep · 69 km away
  5. 2.25 km NE of Chinatown, California · 17123 days ago · 1 km deep · 34 km away
  6. 2.111 km ESE of Sunol, California · 17123 days ago · 8 km deep · 54 km away
  7. 1.87 km E of East Foothills, California · 17123 days ago · 8 km deep · 72 km away
  8. 1.811 km ESE of Livermore, California · 17124 days ago · 8 km deep · 53 km away
  9. 2.03 km E of Berkeley, California · 17125 days ago · 9 km deep · 22 km away
  10. 1.78 km SE of Moskowite Corner, California · 17125 days ago · 8 km deep · 44 km away
  11. 1.53 km S of Fairview, California · 17126 days ago · 3 km deep · 38 km away
  12. 1.53 km S of Fairview, California · 17128 days ago · 5 km deep · 38 km away
  13. 1.82 km SSW of Pleasanton, California · 17130 days ago · 11 km deep · 41 km away
  14. 2.47 km NE of East Foothills, California · 17130 days ago · 11 km deep · 67 km away
  15. 1.91 km NE of San Leandro, California · 17131 days ago · 4 km deep · 30 km away
  16. 2.13 km E of Berkeley, California · 17132 days ago · 11 km deep · 21 km away
  17. 1.76 km SW of Napa, California · 17132 days ago · 6 km deep · 38 km away
  18. 2.31 km E of North Gate, California · 17133 days ago · 13 km deep · 11 km away
  19. 1.68 km ESE of Loma Mar, California · 17135 days ago · 19 km deep · 85 km away
  20. 2.311 km N of Moskowite Corner, California · 17136 days ago · 3 km deep · 63 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1048749. Read Tue, Sep 22, 2026, 8:45 AM UTC.