California earthquakes

M2.0 earthquake 5 km SW of Ridgemark, California

A magnitude 2.0 earthquake struck 5 km SW of Ridgemark, California on Sun, Apr 28, 1985, 12:53 PM PDT (19:53 UTC), 7 km (5 mi) below the surface.

A larger quake followed: M3.1 15 km E of Seven Trees, California. This one was a foreshock.

Ridgemark 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), micro
Local time
UTC
1985-04-28 19:53:59 UTC
Depth
7.5 km (4.6 mi), shallow
Epicenter
36.783° N, 121.409° 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, 0.3 km in depth
Magnitude uncertainty
±0.19
Depth from
From location
Station coverage gap
31°
Stations used
39

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 127 in the 60 days after this one and 31 in the 30 days before it.

After

  1. 1.828 km SE of Big Sur, California · 15122 days ago · 3 km deep · 78 km away
  2. 1.624 km NE of Greenfield, California · 15121 days ago · 7 km deep · 50 km away
  3. 1.88 km ENE of San Martin, California · 15121 days ago · 5 km deep · 38 km away
  4. 3.115 km E of Seven Trees, California · 15121 days ago · 4 km deep · 60 km away
  5. 1.630 km NE of Soledad, California · 15121 days ago · 7 km deep · 40 km away
  6. 2.815 km SSE of Tres Pinos, California · 15120 days ago · 5 km deep · 19 km away
  7. 2.111 km ESE of East Foothills, California · 15119 days ago · 7 km deep · 66 km away
  8. 1.511 km ESE of East Foothills, California · 15119 days ago · 7 km deep · 66 km away
  9. 1.611 km ESE of East Foothills, California · 15119 days ago · 7 km deep · 66 km away
  10. 1.83 km ESE of Aromas, California · 15118 days ago · 7 km deep · 21 km away
  11. 2.615 km SSE of Tres Pinos, California · 15117 days ago · 5 km deep · 19 km away
  12. 3.015 km SSE of Tres Pinos, California · 15117 days ago · 5 km deep · 19 km away
  13. 2.112 km S of Tres Pinos, California · 15117 days ago · 5 km deep · 15 km away
  14. 2.015 km SSE of Tres Pinos, California · 15117 days ago · 5 km deep · 19 km away
  15. 1.624 km NE of Greenfield, California · 15116 days ago · 5 km deep · 46 km away
  16. 2.18 km NE of San Martin, California · 15116 days ago · 8 km deep · 40 km away
  17. 1.69 km E of Gilroy, California · 15115 days ago · 10 km deep · 24 km away
  18. 1.921 km NE of Soledad, California · 15115 days ago · 4 km deep · 35 km away
  19. 2.521 km NE of Soledad, California · 15115 days ago · 8 km deep · 36 km away
  20. 1.616 km SSE of Tres Pinos, California · 15114 days ago · 6 km deep · 19 km away
  21. 2.011 km NNW of Hollister, California · 15114 days ago · 4 km deep · 19 km away
  22. 1.611 km NNW of Hollister, California · 15113 days ago · 4 km deep · 19 km away
  23. 1.811 km NNW of Hollister, California · 15113 days ago · 3 km deep · 19 km away
  24. 1.74 km ENE of La Honda, California · 15112 days ago · 0 km deep · 95 km away
  25. 1.57 km ESE of East Foothills, California · 15112 days ago · 1 km deep · 70 km away
  26. 1.723 km ENE of Soledad, California · 15111 days ago · 6 km deep · 44 km away
  27. 1.79 km SSW of Tres Pinos, California · 15111 days ago · 3 km deep · 9 km away
  28. 1.715 km ENE of East Foothills, California · 15110 days ago · 5 km deep · 78 km away
  29. 1.69 km SW of Carmel Valley Village, California · 15110 days ago · 6 km deep · 53 km away
  30. 1.79 km N of Morgan Hill, California · 15110 days ago · 5 km deep · 53 km away
  31. 1.812 km N of Morgan Hill, California · 15109 days ago · 6 km deep · 55 km away
  32. 2.32 km SW of Hollister, California · 15109 days ago · 6 km deep · 6 km away
  33. 1.88 km ENE of San Martin, California · 15109 days ago · 7 km deep · 39 km away
  34. 1.522 km ENE of San Lucas, California · 15109 days ago · 5 km deep · 81 km away
  35. 2.09 km ESE of East Foothills, California · 15108 days ago · 7 km deep · 69 km away
  36. 1.512 km SE of Livermore, California · 15108 days ago · 15 km deep · 93 km away
  37. 2.136 km W of Three Rocks, California · 15108 days ago · 3 km deep · 60 km away
  38. 1.937 km W of Three Rocks, California · 15108 days ago · 0 km deep · 60 km away
  39. 2.713 km ESE of Alum Rock, California · 15107 days ago · 7 km deep · 64 km away
  40. 1.536 km W of Three Rocks, California · 15107 days ago · 1 km deep · 61 km away
  41. 1.924 km NE of Greenfield, California · 15107 days ago · 3 km deep · 47 km away
  42. 1.714 km N of Morgan Hill, California · 15106 days ago · 6 km deep · 57 km away
  43. 1.69 km NE of Gilroy, California · 15103 days ago · 9 km deep · 33 km away
  44. 2.321 km SW of Three Rocks, California · 15102 days ago · 15 km deep · 86 km away
  45. 2.020 km SW of Three Rocks, California · 15102 days ago · 15 km deep · 86 km away
  46. 2.533 km NE of King City, California · 15102 days ago · 7 km deep · 67 km away
  47. 1.717 km SSE of Tres Pinos, California · 15101 days ago · 9 km deep · 21 km away
  48. 1.58 km ESE of East Foothills, California · 15101 days ago · 2 km deep · 69 km away
  49. 1.69 km ESE of East Foothills, California · 15101 days ago · 5 km deep · 69 km away
  50. 1.622 km NE of Soledad, CA · 15101 days ago · 3 km deep · 33 km away
  51. 1.621 km NE of Soledad, California · 15100 days ago · 4 km deep · 34 km away
  52. 1.610 km NNW of Hollister, California · 15099 days ago · 0 km deep · 17 km away
  53. 1.614 km N of Morgan Hill, California · 15099 days ago · 6 km deep · 58 km away
  54. 2.06 km NE of East Foothills, California · 15098 days ago · 7 km deep · 78 km away
  55. 1.918 km NE of Soledad, California · 15098 days ago · 10 km deep · 32 km away
  56. 2.120 km SW of Three Rocks, California · 15097 days ago · 13 km deep · 88 km away
  57. 1.717 km SW of Soledad, California · 15096 days ago · 8 km deep · 51 km away
  58. 2.022 km NE of Soledad, California · 15096 days ago · 2 km deep · 37 km away
  59. 1.613 km N of Morgan Hill, California · 15095 days ago · 5 km deep · 56 km away
  60. 1.57 km NE of East Foothills, California · 15093 days ago · 10 km deep · 79 km away

The first 60 of 127.

Before

  1. 1.94 km NE of East Foothills, California · 15122 days ago · 3 km deep · 78 km away
  2. 1.7Northern California · 15122 days ago · 2 km deep · 61 km away
  3. 1.65 km SE of Tres Pinos, California · 15122 days ago · 8 km deep · 12 km away
  4. 1.713 km S of Tres Pinos, California · 15122 days ago · 4 km deep · 16 km away
  5. 2.412 km S of Tres Pinos, California · 15123 days ago · 5 km deep · 15 km away
  6. 1.624 km ENE of Soledad, California · 15123 days ago · 3 km deep · 44 km away
  7. 1.624 km NE of Greenfield, California · 15123 days ago · 6 km deep · 49 km away
  8. 3.012 km S of Tres Pinos, California · 15123 days ago · 4 km deep · 15 km away
  9. 3.15 km S of Gilroy, California · 15123 days ago · 5 km deep · 25 km away
  10. 2.221 km NE of Soledad, California · 15123 days ago · 4 km deep · 31 km away
  11. 2.413 km S of Tres Pinos, California · 15123 days ago · 4 km deep · 16 km away
  12. 2.323 km ENE of Soledad, California · 15123 days ago · 2 km deep · 41 km away
  13. 1.512 km NNE of Hollister, California · 15124 days ago · 8 km deep · 20 km away
  14. 3.024 km ENE of Greenfield, California · 15124 days ago · 8 km deep · 52 km away
  15. 1.68 km ENE of San Martin, California · 15125 days ago · 7 km deep · 38 km away
  16. 1.623 km W of Diablo Grande, California · 15125 days ago · 6 km deep · 72 km away
  17. 1.622 km NE of Soledad, California · 15126 days ago · 6 km deep · 37 km away
  18. 1.921 km NE of Soledad, California · 15126 days ago · 2 km deep · 35 km away
  19. 2.226 km NE of Soledad, California · 15126 days ago · 8 km deep · 35 km away
  20. 1.523 km ENE of Soledad, California · 15127 days ago · 4 km deep · 42 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc46811. Read Tue, Sep 22, 2026, 5:27 PM UTC.