California earthquakes

M1.7 earthquake 3 km E of Ridgemark, California

A magnitude 1.7 earthquake struck 3 km E of Ridgemark, California on Wed, Feb 6, 1985, 3:22 AM PST (11:22 UTC), 6 km (4 mi) below the surface.

A larger quake followed: M2.2 24 km NE of Greenfield, 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
1.7 (md), micro
Local time
UTC
1985-02-06 11:22:35 UTC
Depth
6.3 km (3.9 mi), shallow
Epicenter
36.816° N, 121.332° 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
±0.13
Depth from
From location
Station coverage gap
35°
Stations used
56

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 161 in the 60 days after this one and 0 in the 30 days before it.

After

  1. 2.224 km NE of Greenfield, California · 15200 days ago · 6 km deep · 46 km away
  2. 2.224 km NE of Greenfield, California · 15200 days ago · 5 km deep · 46 km away
  3. 1.724 km NE of Greenfield, California · 15199 days ago · 5 km deep · 46 km away
  4. 2.03 km E of Saratoga, California · 15199 days ago · 7 km deep · 77 km away
  5. 1.77 km NW of Hollister, California · 15199 days ago · 9 km deep · 15 km away
  6. 2.321 km NE of Soledad, California · 15199 days ago · 2 km deep · 32 km away
  7. 1.79 km ESE of East Foothills, California · 15199 days ago · 8 km deep · 69 km away
  8. 2.122 km NNE of Soledad, California · 15198 days ago · 9 km deep · 26 km away
  9. 3.13 km NNW of Hollister, California · 15198 days ago · 8 km deep · 10 km away
  10. 1.8Central California · 15198 days ago · 7 km deep · 10 km away
  11. 1.52 km NNW of Hollister, California · 15197 days ago · 7 km deep · 10 km away
  12. 1.817 km ESE of Tres Pinos, CA · 15197 days ago · 0 km deep · 19 km away
  13. 1.715 km E of Seven Trees, California · 15196 days ago · 5 km deep · 59 km away
  14. 2.33 km SSW of San Juan Bautista, California · 15196 days ago · 7 km deep · 20 km away
  15. 2.023 km NE of King City, California · 15196 days ago · 6 km deep · 58 km away
  16. 1.513 km N of Morgan Hill, California · 15196 days ago · 4 km deep · 55 km away
  17. 2.03 km NNW of Hollister, California · 15196 days ago · 6 km deep · 10 km away
  18. 1.815 km E of Seven Trees, California · 15195 days ago · 6 km deep · 60 km away
  19. 2.510 km S of Tres Pinos, California · 15195 days ago · 5 km deep · 14 km away
  20. 1.625 km ENE of Soledad, California · 15195 days ago · 1 km deep · 42 km away
  21. 1.88 km WSW of San Ardo, California · 15195 days ago · 7 km deep · 96 km away
  22. 2.114 km N of Morgan Hill, California · 15195 days ago · 3 km deep · 57 km away
  23. 1.822 km NNE of Soledad, California · 15194 days ago · 2 km deep · 27 km away
  24. 1.816 km N of Morgan Hill, California · 15194 days ago · 4 km deep · 59 km away
  25. 1.718 km SSE of Tres Pinos, California · 15194 days ago · 6 km deep · 22 km away
  26. 1.824 km ENE of Soledad, California · 15194 days ago · 8 km deep · 38 km away
  27. 1.88 km ENE of Morgan Hill, California · 15193 days ago · 2 km deep · 43 km away
  28. 2.05 km ESE of Lexington Hills, California · 15193 days ago · 13 km deep · 64 km away
  29. 1.622 km NE of San Lucas, California · 15192 days ago · 6 km deep · 71 km away
  30. 1.641 km W of Lockwood, California · 15192 days ago · 8 km deep · 99 km away
  31. 1.89 km NNE of Hollister, California · 15192 days ago · 7 km deep · 13 km away
  32. 1.816 km E of Seven Trees, California · 15191 days ago · 4 km deep · 59 km away
  33. 1.624 km ENE of Greenfield, California · 15191 days ago · 4 km deep · 50 km away
  34. 2.231 km WSW of Three Rocks, California · 15190 days ago · 10 km deep · 75 km away
  35. 1.72 km SE of Loyola, California · 15190 days ago · 6 km deep · 88 km away
  36. 1.78 km E of Gilroy, California · 15189 days ago · 5 km deep · 25 km away
  37. 1.99 km SSW of Tres Pinos, California · 15189 days ago · 3 km deep · 11 km away
  38. 1.99 km ESE of East Foothills, California · 15188 days ago · 7 km deep · 69 km away
  39. 1.77 km E of Gilroy, California · 15188 days ago · 5 km deep · 25 km away
  40. 1.517 km SW of Soledad, California · 15188 days ago · 7 km deep · 57 km away
  41. 1.636 km NE of San Lucas, California · 15187 days ago · 10 km deep · 67 km away
  42. 1.64 km S of Greenfield, California · 15186 days ago · 2 km deep · 60 km away
  43. 1.715 km NNW of Big Sur, California · 15186 days ago · 2 km deep · 68 km away
  44. 3.011 km ESE of East Foothills, California · 15186 days ago · 8 km deep · 66 km away
  45. 1.911 km ESE of East Foothills, California · 15186 days ago · 7 km deep · 66 km away
  46. 1.814 km NE of East Foothills, California · 15186 days ago · 7 km deep · 83 km away
  47. 2.316 km E of Seven Trees, California · 15185 days ago · 10 km deep · 59 km away
  48. 2.216 km E of Seven Trees, California · 15185 days ago · 8 km deep · 59 km away
  49. 1.918 km ENE of East Foothills, California · 15185 days ago · 5 km deep · 71 km away
  50. 3.514 km SW of Carmel Valley Village, California · 15185 days ago · 8 km deep · 66 km away
  51. 1.77 km SW of Carmel Valley Village, California · 15185 days ago · 2 km deep · 59 km away
  52. 1.615 km NW of Big Sur, California · 15185 days ago · 11 km deep · 72 km away
  53. 1.88 km NNE of East Foothills, California · 15185 days ago · 7 km deep · 81 km away
  54. 2.08 km SSE of San Juan Bautista, California · 15184 days ago · 10 km deep · 16 km away
  55. 1.624 km NE of King City, California · 15183 days ago · 5 km deep · 57 km away
  56. 1.824 km WNW of Coalinga, California · 15183 days ago · 4 km deep · 94 km away
  57. 1.79 km E of San Martin, California · 15183 days ago · 8 km deep · 34 km away
  58. 2.224 km ENE of Greenfield, California · 15182 days ago · 5 km deep · 55 km away
  59. 1.79 km ESE of East Foothills, California · 15182 days ago · 8 km deep · 69 km away
  60. 2.324 km NE of Greenfield, California · 15181 days ago · 7 km deep · 45 km away

The first 60 of 161.

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc40026. Read Tue, Sep 22, 2026, 8:41 AM UTC.