California earthquakes

M1.9 earthquake 2 km S of Ridgemark, California

A magnitude 1.9 earthquake struck 2 km S of Ridgemark, California on Thu, Jan 15, 1976, 7:14 PM PST (03:14 UTC), 5 km (3 mi) below the surface.

A larger quake followed: M2.4 22 km ENE of San Lucas, 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), micro
Local time
UTC
1976-01-16 03:14:11 UTC
Depth
4.9 km (3.0 mi), shallow
Epicenter
36.786° N, 121.369° 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
48°
Stations used
31

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 192 in the 60 days after this one and 0 in the 30 days before it.

After

  1. 2.422 km ENE of San Lucas, California · 18498 days ago · 6 km deep · 83 km away
  2. 2.421 km ENE of San Lucas, California · 18498 days ago · 6 km deep · 83 km away
  3. 2.523 km ENE of San Lucas, California · 18498 days ago · 7 km deep · 83 km away
  4. 2.3Central California · 18498 days ago · 4 km deep · 38 km away
  5. 2.08 km NW of Hollister, California · 18498 days ago · 5 km deep · 16 km away
  6. 1.9Central California · 18498 days ago · 5 km deep · 25 km away
  7. 2.230 km ENE of Soledad, California · 18497 days ago · 7 km deep · 39 km away
  8. 2.41 km ENE of Soquel, California · 18497 days ago · 14 km deep · 56 km away
  9. 3.021 km SSE of Tres Pinos, California · 18496 days ago · 4 km deep · 23 km away
  10. 1.916 km N of Morgan Hill, California · 18496 days ago · 6 km deep · 60 km away
  11. 1.75 km SSW of Gilroy, California · 18496 days ago · 4 km deep · 28 km away
  12. 2.618 km SSE of Tres Pinos, California · 18496 days ago · 7 km deep · 21 km away
  13. 3.014 km N of Morgan Hill, California · 18496 days ago · 4 km deep · 58 km away
  14. 1.53 km SSW of Loyola, California · 18496 days ago · 6 km deep · 89 km away
  15. 2.26 km SE of Tres Pinos, California · 18496 days ago · 7 km deep · 9 km away
  16. 2.428 km NE of Greenfield, California · 18495 days ago · 0 km deep · 50 km away
  17. 1.79 km NW of Hollister, California · 18495 days ago · 4 km deep · 18 km away
  18. 1.931 km ESE of Tres Pinos, California · 18495 days ago · -1 km deep · 35 km away
  19. 1.51 km ENE of Hollister, California · 18495 days ago · 6 km deep · 8 km away
  20. 2.38 km ENE of Morgan Hill, California · 18495 days ago · 2 km deep · 44 km away
  21. 2.39 km ENE of Morgan Hill, California · 18495 days ago · 2 km deep · 44 km away
  22. 2.425 km ENE of Greenfield, California · 18495 days ago · 2 km deep · 53 km away
  23. 2.22 km SSW of Ridgemark, California · 18495 days ago · 4 km deep · 1 km away
  24. 2.225 km ENE of Greenfield, California · 18495 days ago · 2 km deep · 51 km away
  25. 3.34 km ENE of Tres Pinos, California · 18495 days ago · 6 km deep · 8 km away
  26. 1.63 km ENE of Tres Pinos, California · 18495 days ago · 5 km deep · 8 km away
  27. 2.624 km ENE of Soledad, California · 18495 days ago · 6 km deep · 43 km away
  28. 2.624 km NE of Greenfield, California · 18494 days ago · 6 km deep · 45 km away
  29. 2.020 km SSE of Tres Pinos, California · 18494 days ago · 4 km deep · 23 km away
  30. 2.09 km SSW of Diablo Grande, California · 18494 days ago · 0 km deep · 60 km away
  31. 1.77 km WSW of Ridgemark, California · 18493 days ago · 7 km deep · 6 km away
  32. 2.16 km SW of Gilroy, California · 18491 days ago · 4 km deep · 29 km away
  33. 1.79 km NE of Gilroy, California · 18491 days ago · 6 km deep · 34 km away
  34. 2.211 km S of Tres Pinos, California · 18490 days ago · 4 km deep · 12 km away
  35. 2.016 km NE of East Foothills, California · 18490 days ago · 8 km deep · 83 km away
  36. 2.523 km NNE of San Lucas, California · 18490 days ago · 6 km deep · 69 km away
  37. 1.57 km ENE of Gilroy, California · 18490 days ago · 8 km deep · 30 km away
  38. 2.424 km ENE of Greenfield, California · 18490 days ago · 5 km deep · 54 km away
  39. 2.223 km ENE of Soledad, California · 18489 days ago · 3 km deep · 38 km away
  40. 1.89 km NE of Milpitas, California · 18489 days ago · 7 km deep · 87 km away
  41. 1.723 km ENE of Soledad, California · 18489 days ago · 5 km deep · 41 km away
  42. 1.85 km SSW of Gilroy, California · 18489 days ago · 4 km deep · 28 km away
  43. 1.528 km NE of Soledad, California · 18489 days ago · 9 km deep · 32 km away
  44. 2.97 km SSE of Three Rocks, California · 18488 days ago · 9 km deep · 98 km away
  45. 2.87 km SSE of Three Rocks, California · 18488 days ago · 9 km deep · 98 km away
  46. 2.86 km SSW of Cantua Creek, California · 18487 days ago · 7 km deep · 98 km away
  47. 3.16 km SSE of Three Rocks, California · 18487 days ago · 7 km deep · 97 km away
  48. 2.024 km NE of Greenfield, California · 18487 days ago · 5 km deep · 46 km away
  49. 1.617 km E of Tres Pinos, California · 18487 days ago · 6 km deep · 22 km away
  50. 2.123 km NE of King City, California · 18487 days ago · 4 km deep · 58 km away
  51. 2.4Central California · 18486 days ago · 4 km deep · 40 km away
  52. 1.75 km SW of Gilroy, California · 18486 days ago · 4 km deep · 30 km away
  53. 2.624 km NE of Greenfield, California · 18485 days ago · 2 km deep · 48 km away
  54. 4.05 km ENE of Tres Pinos, California · 18485 days ago · 4 km deep · 10 km away
  55. 1.65 km E of Tres Pinos, California · 18485 days ago · 3 km deep · 10 km away
  56. 1.64 km SW of Gilroy, California · 18484 days ago · 0 km deep · 29 km away
  57. 2.824 km NE of Greenfield, California · 18484 days ago · 2 km deep · 48 km away
  58. 1.83 km ESE of Aromas, CA · 18484 days ago · 5 km deep · 24 km away
  59. 2.322 km NE of San Lucas, California · 18484 days ago · 5 km deep · 70 km away
  60. 2.414 km E of Seven Trees, California · 18484 days ago · 6 km deep · 63 km away

The first 60 of 192.

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1028397. Read Tue, Sep 22, 2026, 11:13 AM UTC.