California earthquakes

M1.9 earthquake 5 km NE of Ridgemark, California

A magnitude 1.9 earthquake struck 5 km NE of Ridgemark, California on Mon, Apr 26, 1976, 11:10 AM PDT (18:10 UTC), 5 km (3 mi) below the surface.

A larger quake followed: M4.6 13 km WSW of Three Rocks, 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
1.9 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
1976-04-26 18:10:09 UTC
Depth
5.1 km (3.2 mi), shallow
Epicenter
36.849° N, 121.316° 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, 0.3 km in depth
Magnitude uncertainty
±0.40
Depth from
From location
Station coverage gap
92°
Stations used
28

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 176 in the 60 days after this one and 109 in the 30 days before it.

After

  1. 2.15 km SSW of Tres Pinos, California · 18421 days ago · 7 km deep · 12 km away
  2. 2.925 km ENE of Greenfield, California · 18421 days ago · 5 km deep · 55 km away
  3. 2.521 km NE of Soledad, California · 18421 days ago · 6 km deep · 31 km away
  4. 1.85 km SSW of Tres Pinos, California · 18420 days ago · 8 km deep · 12 km away
  5. 2.922 km NE of San Lucas, California · 18420 days ago · 7 km deep · 77 km away
  6. 2.024 km E of Tres Pinos, California · 18420 days ago · 0 km deep · 25 km away
  7. 1.620 km ENE of East Foothills, California · 18420 days ago · 8 km deep · 68 km away
  8. 1.63 km E of Aromas, California · 18420 days ago · 7 km deep · 26 km away
  9. 2.37 km NE of Ridgemark, California · 18418 days ago · 5 km deep · 2 km away
  10. 2.021 km NE of Soledad, California · 18417 days ago · 7 km deep · 32 km away
  11. 1.79 km NNW of Hollister, California · 18417 days ago · 4 km deep · 15 km away
  12. 2.011 km SSE of Tres Pinos, California · 18416 days ago · 8 km deep · 18 km away
  13. 2.74 km WSW of Loyola, California · 18416 days ago · 6 km deep · 92 km away
  14. 1.78 km SSW of Tres Pinos, California · 18414 days ago · 3 km deep · 15 km away
  15. 2.321 km ESE of Tres Pinos, California · 18414 days ago · 5 km deep · 23 km away
  16. 2.45 km SSW of Tres Pinos, California · 18414 days ago · 9 km deep · 12 km away
  17. 2.322 km ENE of San Lucas, California · 18414 days ago · 7 km deep · 83 km away
  18. 2.215 km SSE of Diablo Grande, California · 18413 days ago · 3 km deep · 47 km away
  19. 2.119 km NE of East Foothills, California · 18413 days ago · 8 km deep · 80 km away
  20. 2.324 km NE of Greenfield, California · 18410 days ago · 5 km deep · 51 km away
  21. 2.65 km S of Gilroy, California · 18410 days ago · 9 km deep · 26 km away
  22. 2.221 km NE of Soledad, California · 18410 days ago · 7 km deep · 36 km away
  23. 2.112 km SSE of Tres Pinos, California · 18410 days ago · 4 km deep · 19 km away
  24. 2.17 km NE of Ridgemark, California · 18409 days ago · 4 km deep · 2 km away
  25. 1.98 km SSW of Tres Pinos, California · 18409 days ago · 3 km deep · 15 km away
  26. 1.62 km WSW of Ridgemark, California · 18409 days ago · 6 km deep · 8 km away
  27. 1.721 km NE of Soledad, California · 18408 days ago · 6 km deep · 38 km away
  28. 2.27 km SSE of Gilroy, California · 18408 days ago · 6 km deep · 22 km away
  29. 2.321 km NNE of Soledad, California · 18408 days ago · 8 km deep · 29 km away
  30. 1.97 km ESE of Big Sur, California · 18408 days ago · 7 km deep · 77 km away
  31. 1.714 km N of Morgan Hill, California · 18408 days ago · 3 km deep · 54 km away
  32. 1.622 km SSE of Tres Pinos, California · 18408 days ago · 6 km deep · 28 km away
  33. 1.89 km NE of San Martin, California · 18408 days ago · 7 km deep · 38 km away
  34. 2.421 km NNE of Morgan Hill, California · 18407 days ago · 9 km deep · 55 km away
  35. 2.821 km NE of Soledad, California · 18407 days ago · 3 km deep · 34 km away
  36. 2.624 km ENE of Greenfield, California · 18407 days ago · 5 km deep · 53 km away
  37. 2.424 km NE of Greenfield, California · 18406 days ago · 2 km deep · 50 km away
  38. 2.122 km ENE of Soledad, California · 18406 days ago · 5 km deep · 42 km away
  39. 2.421 km NE of Soledad, California · 18406 days ago · 6 km deep · 38 km away
  40. 2.521 km ENE of East Foothills, California · 18405 days ago · 6 km deep · 75 km away
  41. 2.522 km ENE of Soledad, California · 18405 days ago · 5 km deep · 42 km away
  42. 2.524 km ENE of Soledad, California · 18405 days ago · 2 km deep · 45 km away
  43. 2.715 km SSE of Diablo Grande, California · 18405 days ago · 0 km deep · 47 km away
  44. 2.522 km NNE of Soledad, California · 18405 days ago · 1 km deep · 30 km away
  45. 3.423 km ENE of King City, California · 18404 days ago · 4 km deep · 68 km away
  46. 2.223 km ENE of Soledad, California · 18404 days ago · 4 km deep · 43 km away
  47. 3.26 km ESE of Tres Pinos, California · 18404 days ago · 10 km deep · 11 km away
  48. 1.87 km SE of Lexington Hills, California · 18404 days ago · 13 km deep · 61 km away
  49. 1.621 km NE of Soledad, California · 18403 days ago · 7 km deep · 36 km away
  50. 2.08 km NW of Hollister, California · 18403 days ago · 6 km deep · 15 km away
  51. 1.913 km W of Diablo Grande, California · 18402 days ago · 5 km deep · 63 km away
  52. 2.922 km ENE of Soledad, California · 18401 days ago · 5 km deep · 42 km away
  53. 2.824 km NE of Greenfield, California · 18401 days ago · 5 km deep · 50 km away
  54. 3.619 km SW of Soledad, California · 18400 days ago · 13 km deep · 63 km away
  55. 2.624 km ENE of Greenfield, California · 18400 days ago · 0 km deep · 55 km away
  56. 2.413 km SSE of Tres Pinos, California · 18399 days ago · 4 km deep · 20 km away
  57. 2.12 km WSW of San Juan Bautista, California · 18399 days ago · 4 km deep · 22 km away
  58. 2.09 km NNW of Hollister, California · 18398 days ago · 7 km deep · 15 km away
  59. 2.28 km ENE of Milpitas, California · 18398 days ago · 6 km deep · 82 km away
  60. 2.57 km E of East Foothills, California · 18398 days ago · 8 km deep · 70 km away

The first 60 of 176.

Before

  1. 1.97 km SE of La Honda, California · 18422 days ago · 4 km deep · 92 km away
  2. 2.123 km ENE of Soledad, California · 18422 days ago · 4 km deep · 42 km away
  3. 3.728 km SSW of South Dos Palos, California · 18422 days ago · 8 km deep · 49 km away
  4. 2.68 km ESE of Gilroy, California · 18422 days ago · 4 km deep · 21 km away
  5. 3.022 km ENE of Soledad, California · 18423 days ago · 2 km deep · 42 km away
  6. 1.94 km WSW of Ridgemark, California · 18423 days ago · 9 km deep · 10 km away
  7. 2.4Central California · 18423 days ago · 9 km deep · 10 km away
  8. 1.6Central California · 18423 days ago · 5 km deep · 23 km away
  9. 2.917 km SSE of Tres Pinos, California · 18424 days ago · 10 km deep · 24 km away
  10. 1.517 km E of Tres Pinos, California · 18426 days ago · 5 km deep · 17 km away
  11. 2.525 km NE of Soledad, California · 18426 days ago · 7 km deep · 32 km away
  12. 1.98 km ENE of Gilroy, California · 18426 days ago · 7 km deep · 26 km away
  13. 3.323 km SW of Three Rocks, California · 18426 days ago · 24 km deep · 83 km away
  14. 1.927 km NE of Soledad, California · 18426 days ago · 9 km deep · 38 km away
  15. 2.07 km NNE of San Martin, California · 18426 days ago · 5 km deep · 40 km away
  16. 2.46 km NE of East Foothills, California · 18426 days ago · 8 km deep · 75 km away
  17. 2.213 km NW of Lockwood, California · 18427 days ago · 8 km deep · 93 km away
  18. 2.523 km ENE of San Lucas, California · 18427 days ago · 8 km deep · 82 km away
  19. 2.411 km S of Tres Pinos, California · 18427 days ago · 4 km deep · 18 km away
  20. 2.024 km NE of King City, California · 18427 days ago · 1 km deep · 60 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1029528. Read Fri, Oct 2, 2026, 9:48 PM UTC.