California earthquakes

M2.0 earthquake 2 km E of Pacifica, California

A magnitude 2.0 earthquake struck 2 km E of Pacifica, California on Mon, Aug 8, 1983, 4:17 AM PDT (11:17 UTC), 8 km (5 mi) below the surface.

A larger quake followed: M3.2 16 km N of Morgan Hill, California. This one was a foreshock.

Pacifica 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
2.0 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
1983-08-08 11:17:17 UTC
Depth
7.8 km (4.8 mi), shallow
Epicenter
37.609° N, 122.458° 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, 0.4 km in depth
Magnitude uncertainty
±0.15
Depth from
From location
Station coverage gap
150°
Stations used
33

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 35 in the 30 days before it.

After

  1. 1.63 km WSW of San Bruno, California · 15760 days ago · 8 km deep · 2 km away
  2. 2.22 km SW of Pittsburg, California · 15760 days ago · 15 km deep · 66 km away
  3. 1.50 km WSW of Pittsburg, California · 15759 days ago · 17 km deep · 68 km away
  4. 1.95 km SW of Mountain House, California · 15759 days ago · 6 km deep · 79 km away
  5. 1.515 km SE of Livermore, California · 15755 days ago · 4 km deep · 70 km away
  6. 1.51 km SSW of Bodega Bay, California · 15755 days ago · 4 km deep · 95 km away
  7. 2.410 km ENE of Blackhawk, California · 15755 days ago · 9 km deep · 64 km away
  8. 2.110 km ENE of Blackhawk, California · 15754 days ago · 10 km deep · 65 km away
  9. 2.17 km E of East Foothills, California · 15752 days ago · 9 km deep · 69 km away
  10. 1.69 km ENE of San Martin, California · 15752 days ago · 9 km deep · 98 km away
  11. 2.01 km E of Pacheco, California · 15751 days ago · 12 km deep · 54 km away
  12. 2.04 km NNE of Glen Ellen, California · 15750 days ago · 3 km deep · 88 km away
  13. 2.53 km ESE of Kenwood, California · 15749 days ago · 1 km deep · 88 km away
  14. 1.611 km SSE of Livermore, California · 15749 days ago · 6 km deep · 66 km away
  15. 2.34 km ENE of La Honda, California · 15749 days ago · 0 km deep · 36 km away
  16. 1.912 km N of Livermore, California · 15748 days ago · 11 km deep · 65 km away
  17. 1.612 km ESE of East Foothills, California · 15746 days ago · 4 km deep · 75 km away
  18. 1.67 km E of East Foothills, CA · 15744 days ago · 7 km deep · 68 km away
  19. 1.75 km SW of Oakville, California · 15743 days ago · 4 km deep · 88 km away
  20. 2.118 km ESE of Livermore, California · 15742 days ago · 4 km deep · 76 km away
  21. 2.31 km NNE of Diablo, California · 15738 days ago · 9 km deep · 52 km away
  22. 2.12 km SSW of Pittsburg, California · 15738 days ago · 16 km deep · 67 km away
  23. 1.69 km ENE of Milpitas, California · 15737 days ago · 7 km deep · 59 km away
  24. 1.7Northern California · 15736 days ago · 13 km deep · 79 km away
  25. 2.03 km ENE of Fremont, California · 15733 days ago · 5 km deep · 45 km away
  26. 1.714 km E of Seven Trees, California · 15732 days ago · 2 km deep · 77 km away
  27. 2.110 km E of Blackhawk, California · 15732 days ago · 5 km deep · 64 km away
  28. 3.03 km W of Livermore, California · 15729 days ago · 16 km deep · 58 km away
  29. 1.63 km NNW of Clyde, California · 15728 days ago · 2 km deep · 61 km away
  30. 3.216 km N of Morgan Hill, California · 15728 days ago · 9 km deep · 80 km away
  31. 1.89 km S of Moskowite Corner, California · 15727 days ago · 7 km deep · 87 km away
  32. 1.90 km N of Kensington, California · 15726 days ago · 6 km deep · 38 km away
  33. 1.81 km SW of Hillsborough, California · 15726 days ago · 7 km deep · 8 km away
  34. 2.31 km NW of Concord, California · 15725 days ago · 15 km deep · 56 km away
  35. 1.73 km W of Livermore, California · 15724 days ago · 14 km deep · 58 km away
  36. 1.58 km ENE of San Martin, California · 15724 days ago · 7 km deep · 99 km away
  37. 2.314 km W of Rio Vista, California · 15723 days ago · 15 km deep · 81 km away
  38. 2.36 km SW of Loyola, California · 15720 days ago · 7 km deep · 44 km away
  39. 1.82 km SSW of Fairview, California · 15720 days ago · 5 km deep · 36 km away
  40. 2.04 km ESE of Vallejo, California · 15719 days ago · 5 km deep · 58 km away
  41. 1.810 km ENE of Blackhawk, California · 15718 days ago · 3 km deep · 64 km away
  42. 2.09 km SE of Suisun, California · 15717 days ago · 5 km deep · 77 km away
  43. 2.612 km SE of Suisun, California · 15717 days ago · 19 km deep · 76 km away
  44. 2.76 km N of San Leandro, California · 15717 days ago · 10 km deep · 32 km away
  45. 2.513 km E of Seven Trees, California · 15716 days ago · 3 km deep · 77 km away
  46. 2.13 km E of Berkeley, California · 15716 days ago · 10 km deep · 35 km away
  47. 2.53 km E of Berkeley, California · 15716 days ago · 10 km deep · 35 km away
  48. 2.06 km SSE of Byron, California · 15716 days ago · 12 km deep · 77 km away
  49. 1.93 km NE of Santa Rosa, California · 15714 days ago · 8 km deep · 97 km away
  50. 1.610 km WSW of Brentwood, California · 15713 days ago · 9 km deep · 66 km away
  51. 1.85 km WSW of Cupertino, California · 15713 days ago · 5 km deep · 48 km away
  52. 1.54 km WSW of Cupertino, California · 15713 days ago · 5 km deep · 48 km away
  53. 2.111 km E of Blackhawk, California · 15713 days ago · 12 km deep · 65 km away
  54. 1.91 km NE of Pittsburg, California · 15713 days ago · 17 km deep · 70 km away
  55. 2.021 km SW of Diablo Grande, California · 15713 days ago · 0 km deep · 94 km away
  56. 2.02 km E of Pacifica, California · 15712 days ago · 8 km deep · 0 km away
  57. 2.92 km NNE of Piedmont, California · 15710 days ago · 5 km deep · 33 km away
  58. 1.61 km ESE of North Gate, California · 15710 days ago · 11 km deep · 53 km away
  59. 2.02 km N of Piedmont, California · 15709 days ago · 3 km deep · 33 km away
  60. 1.99 km ESE of East Foothills, California · 15707 days ago · 0 km deep · 72 km away

The first 60 of 62.

Before

  1. 2.01 km E of Alamo, California · 15761 days ago · 9 km deep · 47 km away
  2. 1.58 km E of East Foothills, California · 15762 days ago · 7 km deep · 70 km away
  3. 1.69 km ESE of East Foothills, California · 15763 days ago · 7 km deep · 72 km away
  4. 2.39 km ESE of East Foothills, California · 15763 days ago · 7 km deep · 72 km away
  5. 2.02 km E of North Gate, California · 15764 days ago · 11 km deep · 54 km away
  6. 1.99 km ESE of East Foothills, California · 15766 days ago · 3 km deep · 71 km away
  7. 2.39 km ESE of East Foothills, California · 15766 days ago · 3 km deep · 71 km away
  8. 1.91 km W of Broadmoor, California · 15766 days ago · 10 km deep · 9 km away
  9. 2.36 km ESE of Santa Rosa, California · 15766 days ago · 0 km deep · 91 km away
  10. 2.515 km SE of Livermore, California · 15767 days ago · 2 km deep · 70 km away
  11. 2.916 km NE of East Foothills, California · 15770 days ago · 6 km deep · 72 km away
  12. 2.811 km SW of Muir Beach, California · 15771 days ago · 6 km deep · 26 km away
  13. 1.69 km ESE of East Foothills, California · 15771 days ago · 8 km deep · 71 km away
  14. 1.613 km SE of Sunol, California · 15771 days ago · 4 km deep · 61 km away
  15. 1.99 km NE of San Martin, California · 15771 days ago · 7 km deep · 97 km away
  16. 2.03 km N of East Foothills, California · 15772 days ago · 0 km deep · 60 km away
  17. 1.817 km ENE of East Foothills, California · 15772 days ago · 5 km deep · 76 km away
  18. 2.514 km NE of Morgan Hill, California · 15773 days ago · 7 km deep · 93 km away
  19. 2.12 km E of San Leandro, California · 15774 days ago · 2 km deep · 32 km away
  20. 2.37 km WSW of Moskowite Corner, California · 15775 days ago · 8 km deep · 91 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1100050. Read Thu, Oct 1, 2026, 11:05 AM UTC.