California earthquakes

M1.8 earthquake 2 km ESE of Berkeley, California

A magnitude 1.8 earthquake struck 2 km ESE of Berkeley, California on Tue, Oct 23, 1984, 3:27 AM PDT (10:27 UTC), 5 km (3 mi) below the surface.

A larger quake followed: M3.9 19 km E of Seven Trees, California. This one was a foreshock.

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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, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
1984-10-23 10:27:26 UTC
Depth
5.2 km (3.2 mi), shallow
Epicenter
37.863° N, 122.242° 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, 0.6 km in depth
Magnitude uncertainty
±0.17
Depth from
From location
Station coverage gap
45°
Stations used
29

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 106 in the 60 days after this one and 64 in the 30 days before it.

After

  1. 1.79 km NNE of San Martin, California · 15318 days ago · 5 km deep · 99 km away
  2. 2.22 km WSW of Forestville, California · 15317 days ago · 0 km deep · 89 km away
  3. 2.07 km ENE of Winters, California · 15317 days ago · 12 km deep · 83 km away
  4. 2.811 km ESE of East Foothills, California · 15315 days ago · 7 km deep · 75 km away
  5. 1.69 km NE of Morgan Hill, California · 15314 days ago · 5 km deep · 94 km away
  6. 1.96 km N of Kenwood, California · 15314 days ago · 7 km deep · 73 km away
  7. 2.717 km N of Morgan Hill, California · 15313 days ago · 4 km deep · 84 km away
  8. 2.84 km NNE of Pittsburg, California · 15313 days ago · 18 km deep · 40 km away
  9. 1.84 km NE of Pittsburg, California · 15313 days ago · 16 km deep · 41 km away
  10. 1.80 km SW of Pittsburg, California · 15313 days ago · 15 km deep · 36 km away
  11. 1.616 km E of Seven Trees, California · 15312 days ago · 5 km deep · 83 km away
  12. 2.11 km E of North Gate, California · 15312 days ago · 11 km deep · 23 km away
  13. 2.16 km NE of Strawberry, California · 15312 days ago · 9 km deep · 21 km away
  14. 1.613 km N of Morgan Hill, California · 15311 days ago · 3 km deep · 87 km away
  15. 1.81 km ENE of Bodega, California · 15311 days ago · 5 km deep · 82 km away
  16. 1.515 km E of Seven Trees, California · 15311 days ago · 6 km deep · 81 km away
  17. 1.911 km SSE of Livermore, California · 15311 days ago · 6 km deep · 56 km away
  18. 1.69 km NE of Livermore, California · 15311 days ago · 12 km deep · 49 km away
  19. 2.83 km SE of Larkfield-Wikiup, California · 15310 days ago · 6 km deep · 82 km away
  20. 1.715 km N of Morgan Hill, California · 15310 days ago · 6 km deep · 84 km away
  21. 3.12 km SE of Larkfield-Wikiup, California · 15310 days ago · 6 km deep · 82 km away
  22. 3.415 km E of Seven Trees, California · 15310 days ago · 6 km deep · 82 km away
  23. 2.116 km NE of East Foothills, California · 15310 days ago · 6 km deep · 64 km away
  24. 3.919 km E of Seven Trees, California · 15310 days ago · 7 km deep · 83 km away
  25. 2.53 km N of North Fair Oaks, California · 15309 days ago · 9 km deep · 40 km away
  26. 2.914 km N of Morgan Hill, California · 15308 days ago · 5 km deep · 85 km away
  27. 2.011 km SSE of Livermore, California · 15307 days ago · 5 km deep · 57 km away
  28. 1.511 km SE of Livermore, California · 15307 days ago · 5 km deep · 56 km away
  29. 3.314 km N of Morgan Hill, California · 15307 days ago · 6 km deep · 85 km away
  30. 3.114 km N of Morgan Hill, California · 15307 days ago · 6 km deep · 85 km away
  31. 1.65 km WSW of Temelec, California · 15305 days ago · 2 km deep · 51 km away
  32. 2.916 km N of Morgan Hill, California · 15304 days ago · 6 km deep · 83 km away
  33. 2.016 km E of Seven Trees, California · 15304 days ago · 6 km deep · 83 km away
  34. 1.616 km E of Seven Trees, California · 15304 days ago · 6 km deep · 83 km away
  35. 1.52 km E of San Leandro, California · 15302 days ago · 8 km deep · 18 km away
  36. 1.615 km NE of East Foothills, California · 15302 days ago · 7 km deep · 63 km away
  37. 1.62 km SSE of Crockett, California · 15302 days ago · 20 km deep · 19 km away
  38. 2.09 km ESE of East Foothills, California · 15302 days ago · 2 km deep · 73 km away
  39. 3.011 km NNE of Morgan Hill, California · 15300 days ago · 5 km deep · 89 km away
  40. 2.115 km N of Morgan Hill, California · 15300 days ago · 2 km deep · 84 km away
  41. 2.0Northern California · 15300 days ago · 7 km deep · 76 km away
  42. 1.8Northern California · 15295 days ago · 3 km deep · 99 km away
  43. 2.616 km E of Seven Trees, California · 15295 days ago · 8 km deep · 83 km away
  44. 1.95 km NE of Guerneville, California · 15295 days ago · 1 km deep · 97 km away
  45. 1.63 km NE of Seven Trees, California · 15295 days ago · 8 km deep · 72 km away
  46. 2.613 km ESE of Alum Rock, California · 15294 days ago · 7 km deep · 78 km away
  47. 1.69 km NNE of Morgan Hill, California · 15294 days ago · 4 km deep · 93 km away
  48. 2.09 km ENE of Seven Trees, California · 15294 days ago · 5 km deep · 76 km away
  49. 1.710 km ESE of East Foothills, California · 15292 days ago · 7 km deep · 74 km away
  50. 1.814 km E of Seven Trees, California · 15292 days ago · 3 km deep · 81 km away
  51. 1.88 km NE of Morgan Hill, California · 15292 days ago · 2 km deep · 96 km away
  52. 1.58 km ENE of Santa Rosa, California · 15292 days ago · 12 km deep · 75 km away
  53. 2.412 km ESE of East Foothills, California · 15291 days ago · 7 km deep · 77 km away
  54. 1.912 km N of Morgan Hill, California · 15290 days ago · 6 km deep · 88 km away
  55. 1.713 km NNE of East Foothills, California · 15290 days ago · 8 km deep · 60 km away
  56. 1.514 km E of Seven Trees, California · 15288 days ago · 6 km deep · 79 km away
  57. 1.69 km NNE of San Martin, California · 15287 days ago · 5 km deep · 99 km away
  58. 1.610 km ESE of East Foothills, California · 15287 days ago · 7 km deep · 74 km away
  59. 1.914 km E of Seven Trees, California · 15287 days ago · 5 km deep · 80 km away
  60. 1.814 km ESE of East Foothills, California · 15284 days ago · 1 km deep · 78 km away

The first 60 of 106.

Before

  1. 2.23 km NNW of Larkfield-Wikiup, California · 15318 days ago · 6 km deep · 88 km away
  2. 1.69 km ESE of East Foothills, California · 15318 days ago · 8 km deep · 73 km away
  3. 2.48 km ESE of East Foothills, California · 15318 days ago · 8 km deep · 72 km away
  4. 1.75 km ENE of Santa Rosa, California · 15319 days ago · 10 km deep · 75 km away
  5. 2.618 km ESE of East Foothills, California · 15320 days ago · 6 km deep · 81 km away
  6. 2.311 km SSE of Livermore, California · 15320 days ago · 5 km deep · 57 km away
  7. 2.013 km NNW of Moskowite Corner, California · 15320 days ago · 3 km deep · 76 km away
  8. 1.99 km N of Boulder Creek, California · 15321 days ago · 11 km deep · 74 km away
  9. 1.711 km ESE of East Foothills, California · 15321 days ago · 7 km deep · 75 km away
  10. 2.19 km ESE of East Foothills, California · 15321 days ago · 5 km deep · 73 km away
  11. 2.413 km ESE of Alum Rock, California · 15323 days ago · 7 km deep · 78 km away
  12. 2.02 km W of Dublin, California · 15325 days ago · 9 km deep · 31 km away
  13. 1.616 km N of Morgan Hill, California · 15325 days ago · 5 km deep · 84 km away
  14. 2.412 km E of Blackhawk, California · 15326 days ago · 13 km deep · 42 km away
  15. 1.89 km ESE of East Foothills, California · 15326 days ago · 6 km deep · 73 km away
  16. 1.915 km E of Seven Trees, California · 15328 days ago · 5 km deep · 81 km away
  17. 1.99 km N of Day Valley, California · 15328 days ago · 10 km deep · 89 km away
  18. 1.62 km WNW of Fulton, California · 15328 days ago · 2 km deep · 86 km away
  19. 2.510 km N of Morgan Hill, California · 15329 days ago · 7 km deep · 88 km away
  20. 2.00 km WNW of Acalanes Ridge, California · 15330 days ago · 7 km deep · 15 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc30548. Read Thu, Oct 1, 2026, 5:25 AM UTC.