California earthquakes

M2.0 earthquake 8 km SW of Ridgemark, California

A magnitude 2.0 earthquake struck 8 km SW of Ridgemark, California on Wed, Oct 26, 1983, 9:02 PM PDT (04:02 UTC), 7 km (4 mi) below the surface.

A larger quake followed: M3.4 1 km ENE of Ridgemark, 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, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
1983-10-27 04:02:50 UTC
Depth
7.2 km (4.5 mi), shallow
Epicenter
36.750° N, 121.419° 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
49°
Stations used
32

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 105 in the 60 days after this one and 61 in the 30 days before it.

After

  1. 1.523 km NE of San Ardo, California · 15680 days ago · 3 km deep · 86 km away
  2. 1.625 km ENE of Greenfield, California · 15679 days ago · 2 km deep · 51 km away
  3. 1.614 km E of Seven Trees, California · 15679 days ago · 2 km deep · 65 km away
  4. 2.213 km S of Tres Pinos, California · 15679 days ago · 2 km deep · 14 km away
  5. 1.78 km N of Hollister, California · 15678 days ago · 8 km deep · 19 km away
  6. 2.521 km NE of Soledad, California · 15677 days ago · 5 km deep · 29 km away
  7. 1.529 km ENE of Soledad, California · 15677 days ago · 8 km deep · 43 km away
  8. 1.730 km ENE of Soledad, California · 15676 days ago · 8 km deep · 39 km away
  9. 1.826 km NW of Coalinga, California · 15676 days ago · 3 km deep · 90 km away
  10. 2.06 km SSW of Davenport, California · 15672 days ago · 5 km deep · 75 km away
  11. 1.68 km NNW of Hollister, California · 15671 days ago · 2 km deep · 19 km away
  12. 2.424 km NE of Greenfield, California · 15670 days ago · 7 km deep · 44 km away
  13. 1.65 km SSE of San Juan Bautista, California · 15670 days ago · 5 km deep · 10 km away
  14. 2.85 km SSE of San Juan Bautista, California · 15670 days ago · 5 km deep · 10 km away
  15. 1.723 km WSW of Three Rocks, California · 15668 days ago · 12 km deep · 77 km away
  16. 1.79 km ENE of Milpitas, California · 15667 days ago · 7 km deep · 87 km away
  17. 2.012 km ESE of East Foothills, California · 15667 days ago · 7 km deep · 69 km away
  18. 1.96 km NNE of Interlaken, California · 15666 days ago · 7 km deep · 38 km away
  19. 1.721 km SSW of Three Rocks, California · 15666 days ago · 9 km deep · 94 km away
  20. 2.623 km NE of San Lucas, California · 15665 days ago · 10 km deep · 72 km away
  21. 2.29 km SSW of Tres Pinos, California · 15665 days ago · 3 km deep · 8 km away
  22. 1.59 km NNE of East Foothills, California · 15664 days ago · 7 km deep · 85 km away
  23. 2.35 km SSE of San Juan Bautista, California · 15664 days ago · 3 km deep · 10 km away
  24. 1.66 km ENE of Corralitos, California · 15663 days ago · 0 km deep · 42 km away
  25. 2.75 km NNE of Ridgemark, California · 15663 days ago · 7 km deep · 14 km away
  26. 1.64 km SW of Tres Pinos, California · 15663 days ago · 5 km deep · 6 km away
  27. 2.2Central California · 15661 days ago · 9 km deep · 96 km away
  28. 2.124 km NE of Greenfield, California · 15661 days ago · 5 km deep · 46 km away
  29. 1.624 km NE of Greenfield, California · 15661 days ago · 7 km deep · 44 km away
  30. 2.723 km ENE of Soledad, California · 15661 days ago · 8 km deep · 38 km away
  31. 2.215 km N of Morgan Hill, California · 15660 days ago · 2 km deep · 61 km away
  32. 1.622 km ENE of San Ardo, California · 15660 days ago · -1 km deep · 98 km away
  33. 1.825 km WSW of Lockwood, California · 15660 days ago · 8 km deep · 98 km away
  34. 1.85 km SSW of Ridgemark, California · 15658 days ago · 8 km deep · 3 km away
  35. 1.624 km NE of Greenfield, California · 15658 days ago · 7 km deep · 49 km away
  36. 1.612 km ENE of Hollister, California · 15658 days ago · 5 km deep · 22 km away
  37. 1.725 km NE of King City, California · 15657 days ago · 1 km deep · 56 km away
  38. 1.533 km W of Three Rocks, California · 15656 days ago · 11 km deep · 63 km away
  39. 2.128 km NE of Greenfield, California · 15656 days ago · 6 km deep · 45 km away
  40. 1.924 km NE of Greenfield, California · 15656 days ago · 5 km deep · 45 km away
  41. 1.927 km ENE of Soledad, California · 15656 days ago · 8 km deep · 41 km away
  42. 2.331 km ENE of Soledad, California · 15655 days ago · 7 km deep · 39 km away
  43. 2.925 km ENE of Greenfield, California · 15655 days ago · 4 km deep · 53 km away
  44. 2.16 km WSW of Gilroy, California · 15653 days ago · 4 km deep · 32 km away
  45. 1.75 km NE of San Martin, California · 15653 days ago · 3 km deep · 43 km away
  46. 2.35 km NE of San Martin, California · 15653 days ago · 3 km deep · 43 km away
  47. 2.15 km NE of San Martin, California · 15653 days ago · 3 km deep · 43 km away
  48. 1.915 km S of Pescadero, California · 15650 days ago · 10 km deep · 92 km away
  49. 2.05 km SSE of San Juan Bautista, California · 15650 days ago · 5 km deep · 10 km away
  50. 2.821 km NE of Soledad, California · 15649 days ago · 6 km deep · 30 km away
  51. 2.421 km NE of Soledad, California · 15649 days ago · 5 km deep · 30 km away
  52. 1.722 km NE of Morgan Hill, California · 15648 days ago · 2 km deep · 58 km away
  53. 1.621 km NE of Soledad, California · 15648 days ago · 5 km deep · 31 km away
  54. 2.57 km SSE of Gilroy, California · 15647 days ago · 4 km deep · 24 km away
  55. 1.67 km SSE of Gilroy, California · 15647 days ago · 5 km deep · 24 km away
  56. 2.317 km W of Volta, California · 15646 days ago · 0 km deep · 49 km away
  57. 1.715 km E of Seven Trees, California · 15646 days ago · 2 km deep · 64 km away
  58. 1.62 km WSW of San Juan Bautista, California · 15644 days ago · 5 km deep · 16 km away
  59. 1.721 km ESE of Big Sur, California · 15644 days ago · 11 km deep · 63 km away
  60. 1.98 km NE of San Martin, California · 15644 days ago · 8 km deep · 44 km away

The first 60 of 105.

Before

  1. 2.022 km ENE of San Ardo, California · 15680 days ago · 5 km deep · 95 km away
  2. 1.931 km ENE of Soledad, California · 15680 days ago · 8 km deep · 39 km away
  3. 1.919 km NNW of Coalinga, California · 15681 days ago · 9 km deep · 99 km away
  4. 2.723 km ENE of Soledad, California · 15682 days ago · 5 km deep · 39 km away
  5. 1.822 km NE of Soledad, California · 15682 days ago · 8 km deep · 33 km away
  6. 1.931 km ENE of Soledad, California · 15683 days ago · 7 km deep · 40 km away
  7. 1.68 km NE of Milpitas, California · 15684 days ago · 6 km deep · 90 km away
  8. 3.612 km ESE of East Foothills, California · 15684 days ago · 7 km deep · 68 km away
  9. 1.98 km ENE of Morgan Hill, California · 15684 days ago · 2 km deep · 48 km away
  10. 2.27 km NE of San Juan Bautista, California · 15685 days ago · 5 km deep · 18 km away
  11. 1.726 km WSW of Lockwood, California · 15687 days ago · 12 km deep · 100 km away
  12. 1.725 km ENE of Soledad, California · 15688 days ago · 7 km deep · 38 km away
  13. 1.814 km E of Seven Trees, California · 15688 days ago · 7 km deep · 66 km away
  14. 1.921 km SW of Los Banos, California · 15688 days ago · 0 km deep · 42 km away
  15. 1.722 km ENE of San Ardo, California · 15690 days ago · 3 km deep · 98 km away
  16. 1.5Central California · 15691 days ago · 9 km deep · 6 km away
  17. 1.74 km SW of Tres Pinos, California · 15691 days ago · 8 km deep · 6 km away
  18. 1.727 km ENE of Soledad, California · 15692 days ago · 6 km deep · 41 km away
  19. 2.0Central California · 15692 days ago · 4 km deep · 46 km away
  20. 1.926 km WSW of Lockwood, California · 15692 days ago · 10 km deep · 100 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1105694. Read Thu, Oct 1, 2026, 3:38 AM UTC.