California earthquakes

M2.6 earthquake 2 km SW of Ridgemark, California

A magnitude 2.6 earthquake struck 2 km SW of Ridgemark, California on Sat, Feb 3, 1979, 9:25 AM PST (17:25 UTC), 3 km (2 mi) below the surface.

A larger quake followed: M3.4 14 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
2.6 (md), micro
Local time
UTC
1979-02-03 17:25:16 UTC
Depth
3.0 km (1.9 mi), shallow
Epicenter
36.794° N, 121.383° 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 0.1 km horizontally, 0.4 km in depth
Magnitude uncertainty
±0.15
Depth from
From location
Station coverage gap
40°
Stations used
54

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 141 in the 60 days after this one and 44 in the 30 days before it.

After

  1. 2.06 km WSW of Gilroy, California · 17398 days ago · 6 km deep · 30 km away
  2. 3.414 km E of Seven Trees, California · 17397 days ago · 8 km deep · 63 km away
  3. 1.820 km NE of San Lucas, California · 17396 days ago · 5 km deep · 79 km away
  4. 2.722 km NNE of Soledad, California · 17396 days ago · 7 km deep · 27 km away
  5. 2.110 km WSW of Ridgemark, California · 17396 days ago · 7 km deep · 8 km away
  6. 1.822 km NNE of Soledad, California · 17396 days ago · 6 km deep · 26 km away
  7. 1.85 km SW of Gilroy, California · 17395 days ago · 6 km deep · 28 km away
  8. 1.625 km ENE of Soledad, California · 17394 days ago · 8 km deep · 38 km away
  9. 1.87 km NNE of East Foothills, California · 17394 days ago · 6 km deep · 82 km away
  10. 2.223 km NE of San Ardo, California · 17394 days ago · 6 km deep · 87 km away
  11. 2.124 km ENE of Greenfield, California · 17392 days ago · 5 km deep · 55 km away
  12. 1.65 km SSW of Tres Pinos, California · 17392 days ago · 8 km deep · 7 km away
  13. 1.76 km NE of East Foothills, California · 17392 days ago · 8 km deep · 78 km away
  14. 1.824 km ENE of King City, California · 17391 days ago · 4 km deep · 67 km away
  15. 2.54 km SSW of Gilroy, California · 17391 days ago · 7 km deep · 27 km away
  16. 2.324 km ENE of Greenfield, California · 17390 days ago · 6 km deep · 55 km away
  17. 3.612 km S of Tres Pinos, California · 17389 days ago · 4 km deep · 14 km away
  18. 2.512 km S of Tres Pinos, California · 17389 days ago · 4 km deep · 15 km away
  19. 3.112 km S of Tres Pinos, California · 17389 days ago · 4 km deep · 15 km away
  20. 4.014 km S of Tres Pinos, California · 17389 days ago · 6 km deep · 17 km away
  21. 1.811 km S of Tres Pinos, California · 17389 days ago · 4 km deep · 14 km away
  22. 2.512 km S of Tres Pinos, California · 17389 days ago · 4 km deep · 14 km away
  23. 1.823 km NE of King City, California · 17389 days ago · 5 km deep · 59 km away
  24. 1.612 km S of Tres Pinos, California · 17389 days ago · 4 km deep · 14 km away
  25. 2.55 km S of Gilroy, California · 17388 days ago · 6 km deep · 25 km away
  26. 3.523 km NE of Soledad, California · 17388 days ago · 9 km deep · 34 km away
  27. 1.624 km NE of Soledad, California · 17388 days ago · 9 km deep · 34 km away
  28. 1.823 km NE of Soledad, California · 17388 days ago · 9 km deep · 34 km away
  29. 1.811 km ESE of East Foothills, California · 17387 days ago · 8 km deep · 67 km away
  30. 1.521 km NE of Soledad, California · 17387 days ago · 8 km deep · 32 km away
  31. 1.75 km S of Gilroy, California · 17387 days ago · 6 km deep · 25 km away
  32. 2.07 km E of Gilroy, California · 17386 days ago · 5 km deep · 26 km away
  33. 2.07 km E of Gilroy, California · 17386 days ago · 4 km deep · 26 km away
  34. 1.924 km NE of Soledad, California · 17386 days ago · 9 km deep · 34 km away
  35. 2.511 km S of Tres Pinos, California · 17386 days ago · 4 km deep · 14 km away
  36. 3.017 km SSE of Tres Pinos, California · 17386 days ago · 5 km deep · 20 km away
  37. 1.616 km SSE of Tres Pinos, California · 17386 days ago · 5 km deep · 20 km away
  38. 2.116 km SSE of Tres Pinos, California · 17386 days ago · 5 km deep · 20 km away
  39. 2.01 km S of Milpitas, California · 17385 days ago · 2 km deep · 83 km away
  40. 1.66 km SE of Tres Pinos, California · 17385 days ago · 10 km deep · 11 km away
  41. 1.78 km ENE of Morgan Hill, California · 17385 days ago · 3 km deep · 45 km away
  42. 1.923 km NE of Soledad, California · 17385 days ago · 9 km deep · 34 km away
  43. 2.015 km SSW of Santa Cruz, California · 17385 days ago · 5 km deep · 65 km away
  44. 1.933 km SSE of Big Sur, California · 17385 days ago · 3 km deep · 89 km away
  45. 1.823 km NE of Soledad, California · 17384 days ago · 9 km deep · 34 km away
  46. 2.95 km S of Gilroy, California · 17384 days ago · 7 km deep · 25 km away
  47. 2.58 km NNE of Morgan Hill, California · 17384 days ago · 5 km deep · 50 km away
  48. 2.75 km SW of Gilroy, California · 17384 days ago · 4 km deep · 28 km away
  49. 2.14 km SW of Ridgemark, California · 17383 days ago · 9 km deep · 2 km away
  50. 2.56 km ESE of Fremont, California · 17383 days ago · 7 km deep · 95 km away
  51. 1.910 km E of Mendota, California · 17383 days ago · 5 km deep · 99 km away
  52. 1.523 km NE of Soledad, California · 17382 days ago · 9 km deep · 34 km away
  53. 1.89 km NNW of Hollister, California · 17382 days ago · 7 km deep · 16 km away
  54. 1.58 km NNE of Milpitas, California · 17382 days ago · 3 km deep · 89 km away
  55. 1.824 km NE of Soledad, California · 17382 days ago · 7 km deep · 34 km away
  56. 1.812 km S of Tres Pinos, California · 17381 days ago · 2 km deep · 14 km away
  57. 1.824 km NE of Soledad, California · 17380 days ago · 9 km deep · 34 km away
  58. 2.024 km NE of Soledad, California · 17380 days ago · 9 km deep · 34 km away
  59. 1.924 km NE of Soledad, California · 17380 days ago · 9 km deep · 34 km away
  60. 2.4Central California · 17380 days ago · 4 km deep · 15 km away

The first 60 of 141.

Before

  1. 2.08 km WSW of Westley, California · 17398 days ago · 0 km deep · 81 km away
  2. 1.624 km NE of Greenfield, California · 17399 days ago · 5 km deep · 48 km away
  3. 3.510km WSW of Salida, CA · 17399 days ago · 18 km deep · 98 km away
  4. 1.69 km SSW of Tres Pinos, California · 17402 days ago · 2 km deep · 10 km away
  5. 1.812 km NE of Morgan Hill, California · 17403 days ago · 5 km deep · 48 km away
  6. 2.523 km ENE of San Lucas, California · 17404 days ago · 6 km deep · 80 km away
  7. 2.45 km ESE of East Foothills, California · 17405 days ago · 1 km deep · 72 km away
  8. 3.13 km W of San Juan Bautista, California · 17406 days ago · 6 km deep · 18 km away
  9. 3.03 km W of San Juan Bautista, California · 17406 days ago · 7 km deep · 18 km away
  10. 2.08 km NNE of Interlaken, California · 17408 days ago · 10 km deep · 39 km away
  11. 2.1Central California · 17408 days ago · 7 km deep · 33 km away
  12. 1.64 km S of Loyola, California · 17409 days ago · 7 km deep · 86 km away
  13. 2.620 km NE of Morgan Hill, California · 17409 days ago · 2 km deep · 50 km away
  14. 1.66 km NE of Ridgemark, California · 17409 days ago · 2 km deep · 9 km away
  15. 2.423 km ENE of San Lucas, California · 17409 days ago · 5 km deep · 82 km away
  16. 1.55 km SE of Alum Rock, California · 17410 days ago · 2 km deep · 70 km away
  17. 2.54 km SE of Alum Rock, California · 17410 days ago · 3 km deep · 71 km away
  18. 1.629 km ENE of Soledad, California · 17410 days ago · 4 km deep · 39 km away
  19. 1.7Northern California · 17410 days ago · 3 km deep · 70 km away
  20. 1.74 km SE of Alum Rock, California · 17411 days ago · 2 km deep · 70 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1044507. Read Tue, Sep 22, 2026, 10:27 PM UTC.