California earthquakes

M1.8 earthquake 3 km W of Milpitas, California

A magnitude 1.8 earthquake struck 3 km W of Milpitas, California on Thu, Dec 6, 1979, 5:49 AM PST (13:49 UTC), 15 km (9 mi) below the surface.

A larger quake followed: M2.2 10 km E of Blackhawk, California. This one was a foreshock.

Milpitas 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
1.8 (md), micro
Local time
UTC
1979-12-06 13:49:40 UTC
Depth
14.7 km (9.1 mi), shallow
Epicenter
37.426° N, 121.941° 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, 1.0 km in depth
Magnitude uncertainty
±0.10
Depth from
From location
Station coverage gap
46°
Stations used
28

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 194 in the 60 days after this one and 0 in the 30 days before it.

After

  1. 2.210 km E of Blackhawk, California · 17042 days ago · 4 km deep · 46 km away
  2. 2.1Northern California · 17042 days ago · 6 km deep · 49 km away
  3. 2.311 km SW of Brentwood, California · 17042 days ago · 6 km deep · 50 km away
  4. 1.911 km E of Blackhawk, California · 17042 days ago · 12 km deep · 46 km away
  5. 2.011 km ENE of Blackhawk, California · 17042 days ago · 5 km deep · 48 km away
  6. 2.411 km NNE of Livermore, California · 17042 days ago · 12 km deep · 44 km away
  7. 1.811 km E of Blackhawk, California · 17042 days ago · 7 km deep · 48 km away
  8. 1.910 km NNE of Livermore, California · 17042 days ago · 10 km deep · 43 km away
  9. 1.811 km E of Blackhawk, California · 17042 days ago · 5 km deep · 48 km away
  10. 2.012 km E of Blackhawk, California · 17042 days ago · 13 km deep · 45 km away
  11. 2.610 km E of Blackhawk, California · 17042 days ago · 4 km deep · 47 km away
  12. 1.711 km E of Blackhawk, California · 17042 days ago · 9 km deep · 48 km away
  13. 2.412 km WSW of Byron, California · 17042 days ago · 14 km deep · 47 km away
  14. 1.612 km E of Blackhawk, California · 17042 days ago · 12 km deep · 46 km away
  15. 1.710 km E of Blackhawk, California · 17042 days ago · 12 km deep · 48 km away
  16. 2.2Northern California · 17042 days ago · 12 km deep · 43 km away
  17. 2.59 km NNE of Livermore, California · 17042 days ago · 11 km deep · 42 km away
  18. 2.312 km E of Blackhawk, California · 17042 days ago · 13 km deep · 46 km away
  19. 2.012 km WSW of Byron, California · 17042 days ago · 12 km deep · 46 km away
  20. 2.412 km WSW of Byron, California · 17042 days ago · 14 km deep · 46 km away
  21. 2.012 km WSW of Byron, California · 17041 days ago · 13 km deep · 47 km away
  22. 1.911 km SW of Byron, California · 17041 days ago · 13 km deep · 45 km away
  23. 2.4Northern California · 17041 days ago · 4 km deep · 34 km away
  24. 2.17 km ESE of Livermore, California · 17041 days ago · 4 km deep · 33 km away
  25. 2.012 km N of Livermore, California · 17041 days ago · 9 km deep · 44 km away
  26. 1.810 km N of Livermore, California · 17041 days ago · 5 km deep · 42 km away
  27. 2.510 km ENE of Livermore, California · 17041 days ago · 4 km deep · 41 km away
  28. 1.912 km NNE of Livermore, California · 17041 days ago · 9 km deep · 44 km away
  29. 1.811 km N of Livermore, California · 17041 days ago · 13 km deep · 43 km away
  30. 1.810 km E of Blackhawk, California · 17041 days ago · 12 km deep · 47 km away
  31. 2.010 km E of Blackhawk, California · 17041 days ago · 12 km deep · 47 km away
  32. 1.711 km E of Blackhawk, California · 17041 days ago · 14 km deep · 45 km away
  33. 2.39 km NE of Milpitas, California · 17041 days ago · 7 km deep · 12 km away
  34. 2.212 km N of Livermore, California · 17041 days ago · 13 km deep · 44 km away
  35. 1.710 km E of Blackhawk, California · 17041 days ago · 11 km deep · 47 km away
  36. 1.910 km ENE of Blackhawk, California · 17041 days ago · 5 km deep · 50 km away
  37. 2.410 km E of Blackhawk, California · 17041 days ago · 5 km deep · 47 km away
  38. 1.910 km ENE of Blackhawk, California · 17041 days ago · 5 km deep · 48 km away
  39. 1.512 km E of Blackhawk, California · 17041 days ago · 14 km deep · 46 km away
  40. 2.69 km NE of San Martin, California · 17041 days ago · 9 km deep · 47 km away
  41. 1.64 km NNE of Pleasanton, California · 17041 days ago · 11 km deep · 31 km away
  42. 2.910 km ENE of Blackhawk, California · 17041 days ago · 5 km deep · 48 km away
  43. 2.210 km ENE of Blackhawk, California · 17041 days ago · 5 km deep · 48 km away
  44. 2.010 km E of Blackhawk, California · 17041 days ago · 5 km deep · 47 km away
  45. 1.712 km N of Livermore, California · 17041 days ago · 11 km deep · 44 km away
  46. 2.110 km ENE of Blackhawk, California · 17041 days ago · 5 km deep · 48 km away
  47. 1.510 km E of Blackhawk, California · 17041 days ago · 6 km deep · 46 km away
  48. 2.49 km ENE of Blackhawk, California · 17041 days ago · 5 km deep · 48 km away
  49. 3.011 km SW of Brentwood, California · 17041 days ago · 15 km deep · 49 km away
  50. 2.011 km E of Blackhawk, California · 17041 days ago · 9 km deep · 47 km away
  51. 1.511 km ENE of Blackhawk, California · 17041 days ago · 6 km deep · 49 km away
  52. 1.910 km ENE of Blackhawk, California · 17041 days ago · 5 km deep · 50 km away
  53. 5.49 km NE of Livermore, California · 17041 days ago · 14 km deep · 41 km away
  54. 2.112 km E of Blackhawk, California · 17041 days ago · 10 km deep · 45 km away
  55. 1.69 km NE of Livermore, California · 17041 days ago · 10 km deep · 42 km away
  56. 1.99 km NNE of Livermore, California · 17041 days ago · 13 km deep · 42 km away
  57. 1.66 km W of Brentwood, California · 17041 days ago · 57 km deep · 59 km away
  58. 1.59 km ESE of Livermore, California · 17041 days ago · 0 km deep · 34 km away
  59. 1.511 km E of Blackhawk, California · 17041 days ago · 11 km deep · 46 km away
  60. 2.410 km ENE of Livermore, California · 17041 days ago · 0 km deep · 40 km away

The first 60 of 194.

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1049189. Read Tue, Sep 22, 2026, 8:55 PM UTC.