California earthquakes

M2.1 earthquake 10 km N of Pittsburg, California

A magnitude 2.1 earthquake struck 10 km N of Pittsburg, California on Mon, Feb 4, 1985, 11:46 PM PST (07:46 UTC), 20 km (12 mi) below the surface.

A larger quake followed: M2.1 14 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
2.1 (md), micro
Local time
UTC
1985-02-05 07:46:19 UTC
Depth
20.0 km (12.4 mi), shallow
Epicenter
38.122° N, 121.906° 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, 0.4 km in depth
Magnitude uncertainty
±0.17
Depth from
From location
Station coverage gap
90°
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: 89 in the 60 days after this one and 27 in the 30 days before it.

After

  1. 2.011 km NNW of Pittsburg, California · 15204 days ago · 17 km deep · 1 km away
  2. 2.114 km E of Seven Trees, California · 15204 days ago · 5 km deep · 95 km away
  3. 1.78 km NE of Milpitas, California · 15203 days ago · 7 km deep · 71 km away
  4. 1.611 km ESE of Hidden Valley Lake, California · 15203 days ago · 0 km deep · 86 km away
  5. 1.613 km SE of Hidden Valley Lake, California · 15201 days ago · -1 km deep · 82 km away
  6. 1.713 km N of Morgan Hill, California · 15201 days ago · 5 km deep · 99 km away
  7. 1.613 km N of Morgan Hill, California · 15201 days ago · 5 km deep · 100 km away
  8. 2.03 km E of Saratoga, California · 15199 days ago · 7 km deep · 95 km away
  9. 1.79 km ESE of East Foothills, California · 15199 days ago · 8 km deep · 87 km away
  10. 1.715 km E of Seven Trees, California · 15197 days ago · 5 km deep · 96 km away
  11. 1.513 km N of Morgan Hill, California · 15196 days ago · 4 km deep · 100 km away
  12. 1.815 km E of Seven Trees, California · 15195 days ago · 6 km deep · 95 km away
  13. 2.114 km N of Morgan Hill, California · 15195 days ago · 3 km deep · 98 km away
  14. 1.816 km N of Morgan Hill, California · 15194 days ago · 4 km deep · 97 km away
  15. 2.210 km E of Blackhawk, California · 15193 days ago · 10 km deep · 34 km away
  16. 1.69 km ESE of Hidden Valley Lake, California · 15192 days ago · 6 km deep · 87 km away
  17. 2.33 km N of San Leandro, California · 15191 days ago · 1 km deep · 47 km away
  18. 1.816 km E of Seven Trees, California · 15191 days ago · 4 km deep · 97 km away
  19. 1.72 km SE of Loyola, California · 15190 days ago · 6 km deep · 89 km away
  20. 1.99 km ESE of East Foothills, California · 15188 days ago · 7 km deep · 87 km away
  21. 3.011 km ESE of East Foothills, California · 15186 days ago · 8 km deep · 89 km away
  22. 1.911 km ESE of East Foothills, California · 15186 days ago · 7 km deep · 89 km away
  23. 1.814 km NE of East Foothills, California · 15186 days ago · 7 km deep · 72 km away
  24. 2.316 km E of Seven Trees, California · 15186 days ago · 10 km deep · 96 km away
  25. 2.216 km E of Seven Trees, California · 15186 days ago · 8 km deep · 96 km away
  26. 1.918 km ENE of East Foothills, California · 15185 days ago · 5 km deep · 83 km away
  27. 1.88 km NNE of East Foothills, California · 15185 days ago · 7 km deep · 75 km away
  28. 1.76 km ENE of Santa Rosa, California · 15184 days ago · 10 km deep · 74 km away
  29. 2.03 km W of Forestville, California · 15183 days ago · 0 km deep · 97 km away
  30. 1.79 km ESE of Black Point-Green Point, California · 15182 days ago · 14 km deep · 44 km away
  31. 1.79 km ESE of East Foothills, California · 15182 days ago · 8 km deep · 87 km away
  32. 1.64 km NNE of San Leandro, California · 15180 days ago · 11 km deep · 45 km away
  33. 1.815 km E of Seven Trees, California · 15179 days ago · 3 km deep · 95 km away
  34. 2.014 km E of Seven Trees, California · 15179 days ago · 3 km deep · 95 km away
  35. 2.115 km E of Seven Trees, California · 15179 days ago · 3 km deep · 95 km away
  36. 1.53 km ESE of Kenwood, California · 15179 days ago · 8 km deep · 61 km away
  37. 1.512 km ESE of East Foothills, California · 15178 days ago · 6 km deep · 91 km away
  38. 2.716 km N of Morgan Hill, California · 15175 days ago · 5 km deep · 97 km away
  39. 1.715 km E of Seven Trees, California · 15175 days ago · 2 km deep · 95 km away
  40. 2.08 km E of Hidden Valley Lake, California · 15174 days ago · 2 km deep · 89 km away
  41. 1.813 km ESE of East Foothills, California · 15173 days ago · 7 km deep · 91 km away
  42. 3.315 km E of Seven Trees, California · 15169 days ago · 6 km deep · 95 km away
  43. 2.115 km E of Seven Trees, California · 15169 days ago · 6 km deep · 95 km away
  44. 1.79 km SE of Livermore, California · 15169 days ago · 7 km deep · 59 km away
  45. 1.86 km W of Glen Ellen, California · 15169 days ago · 2 km deep · 66 km away
  46. 1.84 km ESE of Healdsburg, California · 15168 days ago · 6 km deep · 95 km away
  47. 2.214 km N of Morgan Hill, California · 15167 days ago · 3 km deep · 98 km away
  48. 2.113 km N of Morgan Hill, California · 15167 days ago · 4 km deep · 100 km away
  49. 2.312 km ESE of East Foothills, California · 15167 days ago · 8 km deep · 91 km away
  50. 2.114 km E of Seven Trees, California · 15167 days ago · 7 km deep · 97 km away
  51. 1.63 km WSW of Campbell, California · 15166 days ago · 5 km deep · 94 km away
  52. 2.54 km W of Glen Ellen, California · 15165 days ago · 9 km deep · 64 km away
  53. 1.814 km E of Seven Trees, California · 15165 days ago · 3 km deep · 94 km away
  54. 2.05 km W of Glen Ellen, California · 15165 days ago · 0 km deep · 65 km away
  55. 1.50 km WNW of Concord, California · 15164 days ago · 13 km deep · 20 km away
  56. 1.91 km SSE of Concord, California · 15164 days ago · 13 km deep · 20 km away
  57. 1.62 km ENE of Berkeley, California · 15162 days ago · 8 km deep · 40 km away
  58. 2.86 km NW of Guinda, California · 15162 days ago · 0 km deep · 89 km away
  59. 2.43 km NNE of Guinda, California · 15162 days ago · -1 km deep · 86 km away
  60. 2.34 km E of Kenwood, California · 15161 days ago · 0 km deep · 60 km away

The first 60 of 89.

Before

  1. 2.110 km N of Pittsburg, California · 15204 days ago · 22 km deep · 1 km away
  2. 2.713 km N of Morgan Hill, California · 15206 days ago · 5 km deep · 100 km away
  3. 1.65 km ESE of Seven Trees, California · 15208 days ago · 45 km deep · 95 km away
  4. 2.0Northern California · 15208 days ago · 7 km deep · 90 km away
  5. 2.014 km E of Seven Trees, California · 15209 days ago · 1 km deep · 95 km away
  6. 1.511 km NNE of Angwin, California · 15216 days ago · 1 km deep · 75 km away
  7. 1.614 km E of Seven Trees, California · 15216 days ago · 2 km deep · 94 km away
  8. 2.83 km SW of Broadmoor, California · 15218 days ago · 7 km deep · 74 km away
  9. 1.917 km ENE of East Foothills, California · 15219 days ago · 5 km deep · 82 km away
  10. 1.57 km E of East Foothills, California · 15220 days ago · 6 km deep · 85 km away
  11. 1.714 km NNE of Angwin, California · 15220 days ago · 13 km deep · 75 km away
  12. 2.615 km E of Seven Trees, California · 15221 days ago · 4 km deep · 95 km away
  13. 1.515 km E of Seven Trees, California · 15225 days ago · 6 km deep · 95 km away
  14. 1.515 km N of Morgan Hill, California · 15226 days ago · 8 km deep · 97 km away
  15. 2.216 km ESE of East Foothills, California · 15226 days ago · 5 km deep · 93 km away
  16. 1.914 km E of Seven Trees, California · 15228 days ago · 2 km deep · 94 km away
  17. 1.714 km E of Seven Trees, California · 15228 days ago · 1 km deep · 94 km away
  18. 1.714 km NNE of Morgan Hill, California · 15228 days ago · 3 km deep · 100 km away
  19. 1.914 km E of Seven Trees, California · 15228 days ago · 2 km deep · 94 km away
  20. 1.914 km NNE of Morgan Hill, California · 15229 days ago · 3 km deep · 100 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc39984. Read Tue, Sep 22, 2026, 10:28 AM UTC.