California earthquakes

M2.1 earthquake 2 km SSE of Concord, California

A magnitude 2.1 earthquake struck 2 km SSE of Concord, California on Sat, Jan 9, 1982, 8:20 PM PST (04:20 UTC), 12 km (7 mi) below the surface.

A larger quake followed: M3.0 3 km E of Berkeley, 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
2.1 (md), micro
Local time
UTC
1982-01-10 04:20:57 UTC
Depth
11.8 km (7.4 mi), shallow
Epicenter
37.962° N, 122.018° 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
±0.16
Depth from
From location
Station coverage gap
75°
Stations used
38

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 75 in the 60 days after this one and 43 in the 30 days before it.

After

  1. 2.45 km E of Penngrove, California · 16334 days ago · 6 km deep · 64 km away
  2. 2.48 km WNW of Montara, California · 16334 days ago · 17 km deep · 68 km away
  3. 2.516 km ENE of East Foothills, California · 16333 days ago · 3 km deep · 69 km away
  4. 1.710 km ENE of Blackhawk, California · 16332 days ago · 9 km deep · 23 km away
  5. 1.910 km ENE of Blackhawk, California · 16332 days ago · 4 km deep · 21 km away
  6. 1.86 km ESE of Roseland, California · 16330 days ago · 9 km deep · 75 km away
  7. 1.73 km S of Clayton, California · 16330 days ago · 3 km deep · 10 km away
  8. 2.12 km SSW of Pittsburg, California · 16330 days ago · 16 km deep · 12 km away
  9. 1.83 km SW of North Richmond, California · 16330 days ago · 5 km deep · 33 km away
  10. 1.75 km NNE of Dogtown, California · 16328 days ago · 0 km deep · 90 km away
  11. 2.21 km ESE of Pittsburg, California · 16327 days ago · 17 km deep · 15 km away
  12. 3.03 km E of Berkeley, California · 16325 days ago · 6 km deep · 22 km away
  13. 1.71 km SSE of Manteca, California · 16323 days ago · 18 km deep · 74 km away
  14. 2.01 km SE of Fairfax, California · 16320 days ago · 5 km deep · 49 km away
  15. 2.03 km E of Berkeley, California · 16320 days ago · 10 km deep · 22 km away
  16. 2.14 km WSW of Antioch, California · 16319 days ago · 15 km deep · 15 km away
  17. 2.13 km SSE of Pittsburg, California · 16319 days ago · 6 km deep · 13 km away
  18. 2.34 km NNE of Benicia, California · 16319 days ago · 5 km deep · 17 km away
  19. 1.79 km SSW of Lathrop, California · 16318 days ago · 6 km deep · 66 km away
  20. 1.714 km NE of East Foothills, California · 16317 days ago · 5 km deep · 61 km away
  21. 1.79 km NE of San Martin, California · 16317 days ago · 8 km deep · 100 km away
  22. 2.514 km NE of East Foothills, California · 16316 days ago · 4 km deep · 62 km away
  23. 2.15 km NE of Santa Rosa, California · 16316 days ago · 9 km deep · 81 km away
  24. 1.617 km SSW of Bolinas, California · 16314 days ago · 1 km deep · 66 km away
  25. 1.612 km NNE of Morgan Hill, California · 16314 days ago · 6 km deep · 88 km away
  26. 2.61 km SSE of Pittsburg, California · 16314 days ago · 17 km deep · 14 km away
  27. 1.90 km E of Pittsburg, California · 16313 days ago · 16 km deep · 14 km away
  28. 2.06 km SW of Moraga, California · 16312 days ago · 9 km deep · 23 km away
  29. 2.41 km S of Pittsburg, California · 16312 days ago · 17 km deep · 13 km away
  30. 1.86 km E of East Foothills, California · 16310 days ago · 6 km deep · 69 km away
  31. 1.63 km NNW of Elmira, California · 16309 days ago · 4 km deep · 47 km away
  32. 2.44 km E of Allendale, California · 16308 days ago · 11 km deep · 56 km away
  33. 1.73 km SE of North Gate, California · 16307 days ago · 12 km deep · 9 km away
  34. 1.76 km E of Rohnert Park, California · 16307 days ago · 6 km deep · 69 km away
  35. 1.68 km ESE of East Foothills, California · 16307 days ago · 5 km deep · 71 km away
  36. 1.93 km NE of Kenwood, California · 16306 days ago · 8 km deep · 68 km away
  37. 2.313 km NE of Morgan Hill, California · 16306 days ago · 8 km deep · 93 km away
  38. 1.911 km E of Blackhawk, California · 16306 days ago · 9 km deep · 26 km away
  39. 1.84 km NNE of Dixon, California · 16305 days ago · 3 km deep · 61 km away
  40. 1.95 km E of Dixon, California · 16305 days ago · 25 km deep · 57 km away
  41. 1.98 km ENE of Morgan Hill, California · 16304 days ago · 4 km deep · 98 km away
  42. 1.80 km SE of Concord, California · 16304 days ago · 9 km deep · 1 km away
  43. 1.918 km E of East Foothills, California · 16303 days ago · 4 km deep · 76 km away
  44. 2.01 km NNE of Clayton, California · 16302 days ago · 3 km deep · 8 km away
  45. 1.914 km E of Seven Trees, California · 16302 days ago · 1 km deep · 80 km away
  46. 1.68 km N of Pittsburg, California · 16301 days ago · 19 km deep · 20 km away
  47. 1.612 km ESE of Livermore, California · 16300 days ago · 8 km deep · 50 km away
  48. 2.411 km SW of Brentwood, California · 16299 days ago · 18 km deep · 25 km away
  49. 2.27 km E of East Foothills, California · 16299 days ago · 6 km deep · 70 km away
  50. 2.27 km E of East Foothills, California · 16299 days ago · 6 km deep · 70 km away
  51. 2.14 km SE of Pittsburg, California · 16296 days ago · 18 km deep · 15 km away
  52. 1.58 km NNE of Milpitas, California · 16296 days ago · 3 km deep · 54 km away
  53. 1.65 km SE of Santa Rosa, California · 16295 days ago · 8 km deep · 75 km away
  54. 1.95 km S of Calistoga, California · 16294 days ago · 2 km deep · 81 km away
  55. 2.05 km N of Windsor, California · 16294 days ago · 7 km deep · 99 km away
  56. 1.81 km SE of Occidental, California · 16293 days ago · 6 km deep · 94 km away
  57. 1.65 km SSW of Antioch, California · 16292 days ago · 11 km deep · 17 km away
  58. 1.6Northern California · 16292 days ago · 11 km deep · 17 km away
  59. 2.01 km SE of Diablo, California · 16292 days ago · 8 km deep · 16 km away
  60. 1.72 km WSW of Oakley, California · 16291 days ago · 9 km deep · 25 km away

The first 60 of 75.

Before

  1. 1.75 km E of Penngrove, California · 16335 days ago · 5 km deep · 64 km away
  2. 2.54 km E of Penngrove, California · 16335 days ago · 6 km deep · 64 km away
  3. 1.84 km E of Penngrove, California · 16335 days ago · 0 km deep · 64 km away
  4. 2.17 km E of East Foothills, California · 16336 days ago · 8 km deep · 69 km away
  5. 2.217 km E of East Foothills, California · 16336 days ago · 6 km deep · 73 km away
  6. 2.35 km E of Penngrove, California · 16338 days ago · 6 km deep · 63 km away
  7. 1.79 km NE of San Martin, California · 16338 days ago · 6 km deep · 99 km away
  8. 2.013 km NE of Angwin, California · 16338 days ago · 11 km deep · 84 km away
  9. 2.54 km SW of Rutherford, California · 16338 days ago · 8 km deep · 65 km away
  10. 2.04 km E of Penngrove, California · 16338 days ago · 5 km deep · 64 km away
  11. 1.64 km ENE of Lompico, California · 16341 days ago · 7 km deep · 94 km away
  12. 2.012 km SW of Byron, California · 16342 days ago · 15 km deep · 29 km away
  13. 2.17 km NNW of Pittsburg, California · 16343 days ago · 19 km deep · 18 km away
  14. 1.83 km WSW of Moskowite Corner, California · 16347 days ago · 12 km deep · 56 km away
  15. 1.64 km E of Penngrove, California · 16348 days ago · 0 km deep · 64 km away
  16. 1.74 km E of Penngrove, California · 16348 days ago · 2 km deep · 64 km away
  17. 2.82 km ENE of Pacifica, California · 16350 days ago · 12 km deep · 54 km away
  18. 1.59 km SW of Calistoga, California · 16351 days ago · 4 km deep · 82 km away
  19. 1.65 km E of Penngrove, California · 16351 days ago · 2 km deep · 64 km away
  20. 1.64 km E of Penngrove, California · 16351 days ago · 0 km deep · 65 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1071095. Read Wed, Sep 30, 2026, 3:54 PM UTC.