California earthquakes

M1.9 earthquake 2 km SE of Pacifica, California

A magnitude 1.9 earthquake struck 2 km SE of Pacifica, California on Tue, Aug 3, 1982, 2:34 PM PDT (21:34 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M2.7 1 km NW of Rollingwood, 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
1.9 (md), micro
Local time
UTC
1982-08-03 21:34:32 UTC
Depth
9.6 km (6.0 mi), shallow
Epicenter
37.594° N, 122.465° 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
105°
Stations used
25

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 70 in the 60 days after this one and 24 in the 30 days before it.

After

  1. 2.71 km NW of Rollingwood, California · 16118 days ago · 7 km deep · 44 km away
  2. 1.83 km WNW of Daly City, California · 16116 days ago · 5 km deep · 14 km away
  3. 2.02 km NW of Glen Ellen, California · 16116 days ago · 8 km deep · 88 km away
  4. 1.82 km NNW of Glen Ellen, California · 16116 days ago · 10 km deep · 88 km away
  5. 1.92 km NW of Glen Ellen, California · 16116 days ago · 9 km deep · 88 km away
  6. 1.55 km ESE of East Foothills, California · 16115 days ago · 2 km deep · 68 km away
  7. 2.812 km WSW of Byron, California · 16114 days ago · 16 km deep · 67 km away
  8. 1.610 km SSW of Santa Cruz, California · 16114 days ago · 4 km deep · 86 km away
  9. 1.68 km WSW of Gilroy, California · 16112 days ago · 2 km deep · 98 km away
  10. 1.97 km NE of Interlaken, California · 16112 days ago · 3 km deep · 98 km away
  11. 2.44 km SW of Green Valley, California · 16111 days ago · 12 km deep · 74 km away
  12. 1.54 km NNE of Vine Hill, California · 16111 days ago · 16 km deep · 60 km away
  13. 1.68 km N of Day Valley, California · 16110 days ago · 12 km deep · 75 km away
  14. 1.98 km ENE of Interlaken, California · 16109 days ago · 3 km deep · 98 km away
  15. 1.98 km WSW of Gilroy, California · 16109 days ago · 3 km deep · 98 km away
  16. 2.70 km SE of Concord, California · 16107 days ago · 14 km deep · 57 km away
  17. 4.313km W of Bonny Doon, CA · 16107 days ago · 14 km deep · 64 km away
  18. 4.58 km NE of Corralitos, California · 16107 days ago · 12 km deep · 90 km away
  19. 1.72 km SW of Dublin, California · 16106 days ago · 9 km deep · 47 km away
  20. 1.71 km S of Concord, California · 16106 days ago · 11 km deep · 56 km away
  21. 1.912 km WSW of Byron, California · 16106 days ago · 15 km deep · 66 km away
  22. 1.60 km SSE of Concord, California · 16106 days ago · 11 km deep · 57 km away
  23. 3.31 km SW of Dublin, California · 16106 days ago · 10 km deep · 46 km away
  24. 1.80 km SSE of Concord, California · 16106 days ago · 13 km deep · 57 km away
  25. 3.32 km SSW of Dublin, California · 16104 days ago · 10 km deep · 46 km away
  26. 1.813 km SE of Livermore, California · 16103 days ago · 6 km deep · 72 km away
  27. 1.714 km NNE of Morgan Hill, California · 16102 days ago · 7 km deep · 86 km away
  28. 1.92 km NNW of Kensington, California · 16102 days ago · 9 km deep · 40 km away
  29. 1.87 km E of East Foothills, California · 16101 days ago · 9 km deep · 68 km away
  30. 3.98 km N of East Foothills, California · 16100 days ago · 6 km deep · 60 km away
  31. 1.91 km N of Orinda, California · 16099 days ago · 6 km deep · 42 km away
  32. 1.814 km E of East Foothills, California · 16097 days ago · 5 km deep · 74 km away
  33. 1.710 km E of Blackhawk, California · 16097 days ago · 10 km deep · 65 km away
  34. 3.812 km E of Blackhawk, California · 16097 days ago · 15 km deep · 67 km away
  35. 2.311 km E of Blackhawk, California · 16097 days ago · 11 km deep · 66 km away
  36. 2.611 km E of Blackhawk, California · 16097 days ago · 14 km deep · 66 km away
  37. 1.610 km E of Blackhawk, California · 16097 days ago · 10 km deep · 65 km away
  38. 1.810 km E of Blackhawk, California · 16097 days ago · 10 km deep · 65 km away
  39. 1.55 km NNE of Kenwood, California · 16096 days ago · 5 km deep · 96 km away
  40. 1.97 km WSW of Gilroy, California · 16096 days ago · 5 km deep · 99 km away
  41. 2.17 km WSW of Gilroy, California · 16096 days ago · 5 km deep · 99 km away
  42. 2.03 km NE of Fremont, California · 16095 days ago · 9 km deep · 44 km away
  43. 1.65 km WSW of Green Valley, California · 16095 days ago · 5 km deep · 75 km away
  44. 2.31 km SSE of Concord, California · 16093 days ago · 12 km deep · 56 km away
  45. 1.70 km N of Pittsburg, California · 16093 days ago · 16 km deep · 70 km away
  46. 1.72 km E of East Foothills, California · 16089 days ago · 4 km deep · 64 km away
  47. 1.98 km ENE of Milpitas, California · 16088 days ago · 2 km deep · 59 km away
  48. 2.30 km SE of Concord, California · 16088 days ago · 7 km deep · 57 km away
  49. 1.710 km ENE of Blackhawk, California · 16088 days ago · 12 km deep · 65 km away
  50. 1.64 km SW of Saint Helena, California · 16086 days ago · 5 km deep · 98 km away
  51. 2.16 km WSW of Gilroy, California · 16085 days ago · 5 km deep · 100 km away
  52. 1.515 km N of Morgan Hill, California · 16084 days ago · 6 km deep · 81 km away
  53. 3.16 km ENE of East Foothills, California · 16083 days ago · 8 km deep · 66 km away
  54. 1.86 km ENE of East Foothills, California · 16083 days ago · 7 km deep · 66 km away
  55. 2.23 km WSW of Clayton, California · 16082 days ago · 13 km deep · 57 km away
  56. 2.07 km NNE of East Foothills, California · 16079 days ago · 7 km deep · 62 km away
  57. 2.411 km ESE of East Foothills, California · 16077 days ago · 8 km deep · 73 km away
  58. 1.82 km ENE of Inverness, California · 16075 days ago · 2 km deep · 66 km away
  59. 1.89 km N of East Foothills, California · 16075 days ago · 6 km deep · 60 km away
  60. 1.79 km NE of San Martin, California · 16075 days ago · 8 km deep · 97 km away

The first 60 of 70.

Before

  1. 1.515 km SE of Livermore, California · 16121 days ago · 2 km deep · 71 km away
  2. 1.73 km SW of Rutherford, California · 16122 days ago · 4 km deep · 94 km away
  3. 2.29 km ESE of East Foothills, California · 16123 days ago · 8 km deep · 72 km away
  4. 2.21 km ENE of San Ramon, California · 16125 days ago · 9 km deep · 49 km away
  5. 1.89 km N of Rio Vista, California · 16130 days ago · 15 km deep · 99 km away
  6. 1.77 km ESE of Clayton, California · 16131 days ago · 14 km deep · 64 km away
  7. 1.614 km ENE of East Foothills, California · 16131 days ago · 5 km deep · 73 km away
  8. 2.011 km SW of Brentwood, California · 16133 days ago · 16 km deep · 67 km away
  9. 1.91 km WNW of Concord, California · 16133 days ago · 14 km deep · 57 km away
  10. 1.715 km NNE of Morgan Hill, California · 16134 days ago · 6 km deep · 84 km away
  11. 1.63 km ESE of Union City, California · 16136 days ago · 5 km deep · 42 km away
  12. 1.75 km NE of East Foothills, California · 16136 days ago · 6 km deep · 64 km away
  13. 2.47 km SW of Brentwood, California · 16139 days ago · 7 km deep · 70 km away
  14. 1.82 km SW of American Canyon, California · 16140 days ago · 9 km deep · 64 km away
  15. 1.79 km ESE of East Foothills, California · 16143 days ago · 8 km deep · 71 km away
  16. 1.65 km S of Port Costa, California · 16143 days ago · 10 km deep · 51 km away
  17. 2.85 km WSW of Moskowite Corner, California · 16144 days ago · 10 km deep · 95 km away
  18. 1.6Northern California · 16144 days ago · 11 km deep · 59 km away
  19. 2.43 km WSW of Moskowite Corner, California · 16145 days ago · 9 km deep · 95 km away
  20. 1.79 km NE of San Martin, California · 16145 days ago · 4 km deep · 95 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1076898. Read Wed, Sep 23, 2026, 4:19 AM UTC.