California earthquakes

M2.4 earthquake 4 km NW of Bay Point, California

A magnitude 2.4 earthquake struck 4 km NW of Bay Point, California on Sat, Mar 23, 1985, 5:51 PM PST (01:51 UTC), 0 km (0 mi) below the surface.

A larger quake followed: M3.2 16 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
2.4 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
1985-03-24 01:51:52 UTC
Depth
-0.1 km (-0.1 mi), shallow
Epicenter
38.059° N, 121.994° 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 0.7 km horizontally, 1.4 km in depth
Magnitude uncertainty
±0.14
Depth from
From location
Station coverage gap
71°
Stations used
15

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 82 in the 60 days after this one and 52 in the 30 days before it.

After

  1. 2.83 km S of Stinson Beach, California · 15168 days ago · 10 km deep · 61 km away
  2. 1.615 km N of Morgan Hill, California · 15166 days ago · 6 km deep · 93 km away
  3. 1.515 km E of East Foothills, California · 15164 days ago · 8 km deep · 79 km away
  4. 1.817 km ESE of Hidden Valley Lake, California · 15164 days ago · 4 km deep · 83 km away
  5. 2.25 km E of Santa Rosa, California · 15164 days ago · 0 km deep · 71 km away
  6. 2.313 km SSW of Guinda, California · 15163 days ago · 0 km deep · 78 km away
  7. 3.216 km E of Seven Trees, California · 15162 days ago · 6 km deep · 92 km away
  8. 1.516 km E of Seven Trees, California · 15162 days ago · 5 km deep · 92 km away
  9. 1.6Northern California · 15161 days ago · 9 km deep · 69 km away
  10. 2.56 km E of Santa Rosa, California · 15161 days ago · 1 km deep · 70 km away
  11. 1.65 km NE of East Foothills, California · 15160 days ago · 5 km deep · 75 km away
  12. 2.514 km N of Morgan Hill, California · 15160 days ago · 4 km deep · 94 km away
  13. 2.12 km ENE of Berkeley, California · 15160 days ago · 9 km deep · 30 km away
  14. 1.71 km N of Mountain View, California · 15159 days ago · 6 km deep · 74 km away
  15. 1.710 km NNE of Morgan Hill, California · 15159 days ago · 3 km deep · 100 km away
  16. 1.613 km N of Morgan Hill, California · 15158 days ago · 3 km deep · 96 km away
  17. 1.94 km N of Larkfield-Wikiup, California · 15157 days ago · 3 km deep · 86 km away
  18. 2.516 km N of Morgan Hill, California · 15156 days ago · 8 km deep · 92 km away
  19. 2.04 km NNW of Larkfield-Wikiup, California · 15156 days ago · 3 km deep · 87 km away
  20. 1.814 km N of Morgan Hill, California · 15156 days ago · 5 km deep · 94 km away
  21. 1.617 km ENE of East Foothills, California · 15154 days ago · 5 km deep · 78 km away
  22. 2.55 km N of Windsor, California · 15154 days ago · 5 km deep · 93 km away
  23. 2.412 km NNE of East Foothills, California · 15153 days ago · 8 km deep · 68 km away
  24. 2.46 km E of Fremont, California · 15152 days ago · 9 km deep · 58 km away
  25. 1.86 km SSW of Sunol, California · 15152 days ago · 9 km deep · 58 km away
  26. 1.513 km ESE of Hidden Valley Lake, California · 15152 days ago · 5 km deep · 85 km away
  27. 1.65 km E of Fremont, California · 15152 days ago · 9 km deep · 58 km away
  28. 1.75 km E of Fremont, California · 15152 days ago · 10 km deep · 58 km away
  29. 1.66 km E of Fremont, California · 15152 days ago · 10 km deep · 58 km away
  30. 3.112 km N of Morgan Hill, California · 15152 days ago · 5 km deep · 97 km away
  31. 2.412 km N of Morgan Hill, California · 15151 days ago · 5 km deep · 96 km away
  32. 1.813 km N of Morgan Hill, California · 15150 days ago · 4 km deep · 96 km away
  33. 1.814 km N of Morgan Hill, California · 15150 days ago · 6 km deep · 94 km away
  34. 1.61 km S of Cotati, California · 15148 days ago · 17 km deep · 69 km away
  35. 2.44 km WNW of Saratoga, California · 15148 days ago · 4 km deep · 86 km away
  36. 2.04 km SW of Cupertino, California · 15148 days ago · 5 km deep · 86 km away
  37. 2.58 km WNW of Guinda, California · 15147 days ago · 2 km deep · 92 km away
  38. 2.47 km WNW of Guinda, California · 15146 days ago · 1 km deep · 92 km away
  39. 1.914 km E of Seven Trees, California · 15145 days ago · 5 km deep · 89 km away
  40. 1.816 km E of Seven Trees, California · 15142 days ago · 8 km deep · 92 km away
  41. 1.68 km ESE of East Foothills, California · 15142 days ago · 7 km deep · 82 km away
  42. 1.79 km ESE of East Foothills, California · 15142 days ago · 7 km deep · 82 km away
  43. 1.74 km SE of Portola Valley, California · 15141 days ago · 10 km deep · 81 km away
  44. 2.23 km ESE of Berkeley, California · 15141 days ago · 8 km deep · 30 km away
  45. 2.41 km SSW of Green Valley, California · 15140 days ago · 12 km deep · 25 km away
  46. 2.02 km S of Green Valley, California · 15140 days ago · 11 km deep · 24 km away
  47. 2.713 km ESE of Alum Rock, California · 15140 days ago · 7 km deep · 87 km away
  48. 1.97 km NW of Pescadero, California · 15139 days ago · 11 km deep · 92 km away
  49. 1.72 km ENE of Union City, California · 15137 days ago · 6 km deep · 51 km away
  50. 1.623 km W of Diablo Grande, California · 15136 days ago · 6 km deep · 81 km away
  51. 1.72 km SE of Pittsburg, California · 15134 days ago · 16 km deep · 12 km away
  52. 1.7Northern California · 15133 days ago · 2 km deep · 90 km away
  53. 1.94 km NE of East Foothills, California · 15133 days ago · 3 km deep · 74 km away
  54. 2.13 km ESE of Berkeley, California · 15133 days ago · 8 km deep · 30 km away
  55. 2.1Northern California · 15133 days ago · 2 km deep · 86 km away
  56. 2.33 km SSE of North Gate, California · 15133 days ago · 10 km deep · 21 km away
  57. 3.115 km E of Seven Trees, California · 15132 days ago · 4 km deep · 91 km away
  58. 2.06 km WNW of Guinda, California · 15132 days ago · 3 km deep · 91 km away
  59. 2.111 km ESE of East Foothills, California · 15130 days ago · 7 km deep · 85 km away
  60. 1.511 km ESE of East Foothills, California · 15130 days ago · 7 km deep · 85 km away

The first 60 of 82.

Before

  1. 2.09 km NNE of Angwin, California · 15169 days ago · -1 km deep · 74 km away
  2. 1.612 km N of Morgan Hill, California · 15169 days ago · 7 km deep · 96 km away
  3. 1.9Northern California · 15170 days ago · 2 km deep · 90 km away
  4. 1.815 km N of Morgan Hill, California · 15170 days ago · 6 km deep · 93 km away
  5. 3.014 km N of Morgan Hill, California · 15171 days ago · 6 km deep · 94 km away
  6. 2.414 km E of Seven Trees, California · 15171 days ago · 2 km deep · 89 km away
  7. 1.614 km N of Morgan Hill, California · 15172 days ago · 6 km deep · 94 km away
  8. 2.615 km E of Seven Trees, California · 15173 days ago · 5 km deep · 91 km away
  9. 1.93 km E of Berkeley, California · 15173 days ago · 10 km deep · 30 km away
  10. 1.61 km ENE of Larkfield-Wikiup, California · 15173 days ago · 3 km deep · 82 km away
  11. 2.34 km E of Kenwood, California · 15173 days ago · 0 km deep · 58 km away
  12. 2.43 km NNE of Guinda, California · 15173 days ago · -1 km deep · 91 km away
  13. 2.86 km NW of Guinda, California · 15173 days ago · 0 km deep · 93 km away
  14. 1.62 km ENE of Berkeley, California · 15173 days ago · 8 km deep · 30 km away
  15. 1.91 km SSE of Concord, California · 15175 days ago · 13 km deep · 10 km away
  16. 1.50 km WNW of Concord, California · 15176 days ago · 13 km deep · 10 km away
  17. 2.05 km W of Glen Ellen, California · 15176 days ago · 0 km deep · 62 km away
  18. 1.814 km E of Seven Trees, California · 15176 days ago · 3 km deep · 89 km away
  19. 2.54 km W of Glen Ellen, California · 15176 days ago · 9 km deep · 61 km away
  20. 1.63 km WSW of Campbell, California · 15178 days ago · 5 km deep · 87 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc44603. Read Sat, Oct 3, 2026, 10:39 PM UTC.