California earthquakes

M1.5 earthquake 9 km SSW of Ridgemark, California

A magnitude 1.5 earthquake struck 9 km SSW of Ridgemark, California on Mon, Feb 8, 1982, 1:10 AM PST (09:10 UTC), 7 km (5 mi) below the surface.

A larger quake followed: M2.1 1 km NE of Aromas, 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.

Open the live map with earthquakes

The earthquake

Magnitude
1.5 (md), micro
Local time
UTC
1982-02-08 09:10:45 UTC
Depth
7.5 km (4.7 mi), shallow
Epicenter
36.736° N, 121.407° 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, 0.5 km in depth
Magnitude uncertainty
±0.14
Depth from
From location
Station coverage gap
41°
Stations used
34

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 159 in the 60 days after this one and 15 in the 30 days before it.

After

  1. 2.11 km NE of Aromas, California · 16297 days ago · 5 km deep · 27 km away
  2. 1.98 km ENE of Morgan Hill, California · 16296 days ago · 4 km deep · 49 km away
  3. 3.010 km S of Tres Pinos, California · 16296 days ago · 4 km deep · 9 km away
  4. 1.724 km ENE of Soledad, California · 16296 days ago · 0 km deep · 35 km away
  5. 1.926 km SE of Tres Pinos, California · 16296 days ago · 10 km deep · 29 km away
  6. 1.937 km NE of King City, California · 16296 days ago · 17 km deep · 62 km away
  7. 1.918 km E of East Foothills, California · 16295 days ago · 4 km deep · 72 km away
  8. 2.48 km ENE of Patterson, California · 16295 days ago · 12 km deep · 90 km away
  9. 1.75 km WSW of Gilroy, California · 16295 days ago · 7 km deep · 34 km away
  10. 3.23 km ENE of Tres Pinos, California · 16294 days ago · 5 km deep · 14 km away
  11. 1.84 km NE of Tres Pinos, California · 16294 days ago · 3 km deep · 14 km away
  12. 1.625 km ENE of San Ardo, California · 16294 days ago · 3 km deep · 97 km away
  13. 1.914 km E of Seven Trees, California · 16294 days ago · 1 km deep · 67 km away
  14. 2.23 km WNW of San Juan Bautista, California · 16293 days ago · 4 km deep · 20 km away
  15. 1.814 km N of Hollister, California · 16293 days ago · 6 km deep · 27 km away
  16. 1.724 km NE of Greenfield, California · 16293 days ago · 6 km deep · 44 km away
  17. 1.922 km ENE of San Lucas, California · 16292 days ago · 6 km deep · 77 km away
  18. 2.59 km SW of Ridgemark, California · 16292 days ago · 7 km deep · 4 km away
  19. 1.810 km WNW of Volta, California · 16292 days ago · 6 km deep · 56 km away
  20. 2.22 km WSW of Hollister, California · 16292 days ago · 5 km deep · 12 km away
  21. 1.617 km W of Volta, California · 16292 days ago · 0 km deep · 45 km away
  22. 2.822 km ENE of Soledad, California · 16291 days ago · 2 km deep · 34 km away
  23. 1.922 km NE of Soledad, California · 16291 days ago · 3 km deep · 34 km away
  24. 2.722 km ENE of Soledad, California · 16291 days ago · 3 km deep · 34 km away
  25. 2.27 km E of East Foothills, California · 16291 days ago · 6 km deep · 76 km away
  26. 2.27 km E of East Foothills, California · 16291 days ago · 6 km deep · 77 km away
  27. 3.02 km WSW of San Juan Bautista, California · 16290 days ago · 6 km deep · 17 km away
  28. 2.922 km NNE of Soledad, California · 16289 days ago · 6 km deep · 23 km away
  29. 2.92 km SW of San Juan Bautista, California · 16289 days ago · 6 km deep · 17 km away
  30. 3.02 km WSW of San Juan Bautista, California · 16289 days ago · 6 km deep · 18 km away
  31. 2.42 km S of San Juan Bautista, California · 16289 days ago · 6 km deep · 16 km away
  32. 1.623 km WSW of Lockwood, California · 16289 days ago · 15 km deep · 99 km away
  33. 2.025 km NNE of King City, California · 16289 days ago · 7 km deep · 53 km away
  34. 2.26 km WSW of Gilroy, California · 16289 days ago · 3 km deep · 34 km away
  35. 1.58 km NNE of Milpitas, California · 16288 days ago · 3 km deep · 94 km away
  36. 2.49 km NW of Hollister, California · 16288 days ago · 5 km deep · 21 km away
  37. 2.230 km W of Lockwood, California · 16288 days ago · 13 km deep · 91 km away
  38. 2.022 km NE of Soledad, California · 16287 days ago · 6 km deep · 25 km away
  39. 1.622 km NE of San Ardo, California · 16286 days ago · 2 km deep · 89 km away
  40. 2.218 km SSE of Tres Pinos, California · 16286 days ago · 11 km deep · 18 km away
  41. 1.818 km SSE of Tres Pinos, California · 16286 days ago · 11 km deep · 17 km away
  42. 1.510 km WNW of Moss Landing, California · 16285 days ago · 10 km deep · 45 km away
  43. 1.924 km NE of Greenfield, California · 16285 days ago · 6 km deep · 45 km away
  44. 1.625 km NNE of King City, California · 16285 days ago · 7 km deep · 53 km away
  45. 1.526 km SE of Tres Pinos, California · 16285 days ago · 8 km deep · 29 km away
  46. 2.88 km NE of Gilroy, California · 16284 days ago · 7 km deep · 36 km away
  47. 1.710 km E of Big Sur, California · 16284 days ago · 3 km deep · 56 km away
  48. 2.224 km ENE of Greenfield, California · 16284 days ago · 6 km deep · 50 km away
  49. 1.625 km ENE of Greenfield, California · 16284 days ago · 9 km deep · 50 km away
  50. 1.721 km NE of Soledad, California · 16284 days ago · 7 km deep · 30 km away
  51. 1.721 km NE of Soledad, California · 16284 days ago · 7 km deep · 30 km away
  52. 2.036 km W of Three Rocks, California · 16283 days ago · 9 km deep · 59 km away
  53. 1.79 km NE of San Juan Bautista, California · 16283 days ago · 7 km deep · 20 km away
  54. 2.07 km ESE of East Foothills, California · 16283 days ago · 5 km deep · 76 km away
  55. 1.729 km SE of Big Sur, California · 16283 days ago · 12 km deep · 74 km away
  56. 1.58 km E of San Martin, California · 16283 days ago · 6 km deep · 42 km away
  57. 1.65 km S of Gilroy, California · 16282 days ago · 6 km deep · 29 km away
  58. 1.515 km N of Morgan Hill, California · 16282 days ago · 5 km deep · 63 km away
  59. 2.025 km NE of Greenfield, California · 16282 days ago · 9 km deep · 48 km away
  60. 1.521 km NE of Soledad, California · 16282 days ago · 2 km deep · 26 km away

The first 60 of 159.

Before

  1. 2.313 km NE of Morgan Hill, California · 16298 days ago · 8 km deep · 54 km away
  2. 1.68 km ESE of East Foothills, California · 16299 days ago · 5 km deep · 75 km away
  3. 2.422 km NE of Soledad, California · 16299 days ago · 3 km deep · 28 km away
  4. 2.024 km NE of Soledad, California · 16299 days ago · 2 km deep · 34 km away
  5. 2.16 km SSW of Hollister, California · 16300 days ago · 10 km deep · 8 km away
  6. 2.524 km ENE of Soledad, California · 16300 days ago · 1 km deep · 35 km away
  7. 1.87 km NE of San Juan Bautista, California · 16300 days ago · 6 km deep · 19 km away
  8. 2.57 km NE of San Juan Bautista, California · 16300 days ago · 5 km deep · 19 km away
  9. 2.421 km NE of Soledad, California · 16302 days ago · 3 km deep · 31 km away
  10. 1.621 km SE of Tres Pinos, California · 16302 days ago · 7 km deep · 25 km away
  11. 2.07 km NNW of El Nido, California · 16302 days ago · 14 km deep · 94 km away
  12. 1.86 km E of East Foothills, California · 16302 days ago · 6 km deep · 78 km away
  13. 2.02 km SSE of San Ardo, California · 16303 days ago · 13 km deep · 94 km away
  14. 2.021 km NE of Soledad, California · 16303 days ago · 6 km deep · 29 km away
  15. 2.221 km NE of Soledad, California · 16304 days ago · 6 km deep · 29 km away

Earthquakes todayCalifornia earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1071907. Read Tue, Sep 22, 2026, 5:23 PM UTC.