California earthquakes

M3.1 earthquake 7 km S of Sunol, California

A magnitude 3.1 earthquake struck 7 km S of Sunol, California on Sat, Mar 20, 1976, 10:47 AM PST (18:47 UTC), 9 km (5 mi) below the surface.

A larger quake followed: M3.5 7 km WSW of Gilroy, California. This one was a foreshock.

Sunol 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
3.1 (Md, duration), minor
Magnitude from
Northern California Seismic System
Local time
UTC
1976-03-20 18:47:41 UTC
Depth
8.7 km (5.4 mi), shallow
Epicenter
37.526° N, 121.887° 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, 0.7 km in depth
Magnitude uncertainty
±0.11
Depth from
From location
Station coverage gap
57°
Stations used
37

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 119 in the 60 days after this one and 80 in the 30 days before it.

After

  1. 2.07 km S of Sunol, California · 18457 days ago · 8 km deep · 0 km away
  2. 2.29 km ESE of Livermore, California · 18457 days ago · 5 km deep · 23 km away
  3. 2.77 km WSW of Ridgemark, California · 18456 days ago · 8 km deep · 92 km away
  4. 3.57 km WSW of Ridgemark, California · 18456 days ago · 9 km deep · 91 km away
  5. 2.3Northern California · 18456 days ago · 18 km deep · 61 km away
  6. 2.415 km NW of Pacific Grove, California · 18456 days ago · 11 km deep · 91 km away
  7. 2.23 km NE of Fairview, California · 18455 days ago · 2 km deep · 23 km away
  8. 1.7Northern California · 18454 days ago · 15 km deep · 15 km away
  9. 2.1Northern California · 18454 days ago · 6 km deep · 10 km away
  10. 2.57 km WSW of Ridgemark, California · 18454 days ago · 8 km deep · 91 km away
  11. 2.416 km NE of East Foothills, California · 18453 days ago · 8 km deep · 18 km away
  12. 2.48 km ENE of Gilroy, California · 18453 days ago · 4 km deep · 66 km away
  13. 1.816 km NE of East Foothills, California · 18453 days ago · 8 km deep · 18 km away
  14. 1.818 km NE of East Foothills, California · 18452 days ago · 3 km deep · 21 km away
  15. 1.66 km SE of San Juan Bautista, California · 18452 days ago · 9 km deep · 88 km away
  16. 1.96 km S of Sunol, California · 18452 days ago · 7 km deep · 2 km away
  17. 2.67 km S of Sunol, California · 18452 days ago · 6 km deep · 2 km away
  18. 2.77 km S of Sunol, California · 18452 days ago · 7 km deep · 2 km away
  19. 2.416 km NE of East Foothills, California · 18452 days ago · 8 km deep · 18 km away
  20. 2.110 km NE of Tres Pinos, California · 18452 days ago · 6 km deep · 94 km away
  21. 1.57 km SSW of Tres Pinos, California · 18451 days ago · 4 km deep · 100 km away
  22. 1.910 km NNW of Hollister, California · 18449 days ago · 4 km deep · 76 km away
  23. 1.99 km NW of Hollister, California · 18449 days ago · 3 km deep · 77 km away
  24. 2.016 km NE of East Foothills, California · 18449 days ago · 7 km deep · 18 km away
  25. 2.68 km ENE of Morgan Hill, California · 18449 days ago · 3 km deep · 50 km away
  26. 1.711 km N of Morgan Hill, CA · 18449 days ago · 7 km deep · 39 km away
  27. 2.810 km NW of Hollister, California · 18448 days ago · 4 km deep · 76 km away
  28. 2.0Central California · 18447 days ago · 7 km deep · 68 km away
  29. 2.04 km N of Day Valley, California · 18446 days ago · 4 km deep · 50 km away
  30. 2.09 km NW of Hollister, California · 18446 days ago · 1 km deep · 77 km away
  31. 1.93 km SSW of Broadmoor, California · 18446 days ago · 7 km deep · 56 km away
  32. 2.06 km NE of East Foothills, California · 18445 days ago · 8 km deep · 16 km away
  33. 2.19 km NE of San Juan Bautista, California · 18444 days ago · 5 km deep · 77 km away
  34. 2.010 km NNW of Hollister, California · 18444 days ago · 4 km deep · 76 km away
  35. 1.87 km NE of San Juan Bautista, California · 18443 days ago · 5 km deep · 78 km away
  36. 1.87 km NE of San Juan Bautista, California · 18443 days ago · 4 km deep · 78 km away
  37. 1.85 km SSW of Gilroy, California · 18443 days ago · 6 km deep · 67 km away
  38. 2.813 km N of Morgan Hill, California · 18442 days ago · 5 km deep · 38 km away
  39. 2.47 km WSW of Ridgemark, California · 18442 days ago · 10 km deep · 91 km away
  40. 2.52 km NW of Hollister, California · 18441 days ago · 4 km deep · 84 km away
  41. 2.03 km WNW of Pacific Grove, California · 18441 days ago · 7 km deep · 99 km away
  42. 2.05 km ENE of East Foothills, California · 18441 days ago · 3 km deep · 18 km away
  43. 2.79 km NW of Hollister, California · 18441 days ago · 6 km deep · 78 km away
  44. 1.64 km NE of Ridgemark, California · 18441 days ago · 6 km deep · 91 km away
  45. 2.36 km NNE of East Foothills, California · 18440 days ago · 7 km deep · 13 km away
  46. 2.413 km N of Hollister, California · 18440 days ago · 7 km deep · 76 km away
  47. 1.68 km ENE of East Foothills, California · 18439 days ago · 2 km deep · 19 km away
  48. 1.71 km SW of Campbell, California · 18438 days ago · 6 km deep · 29 km away
  49. 2.07 km NNE of East Foothills, California · 18437 days ago · 10 km deep · 14 km away
  50. 1.54 km WNW of San Juan Bautista, California · 18437 days ago · 7 km deep · 79 km away
  51. 2.916 km E of Seven Trees, California · 18436 days ago · 7 km deep · 34 km away
  52. 3.57 km WSW of Gilroy, California · 18435 days ago · 4 km deep · 66 km away
  53. 2.18 km WSW of Gilroy, California · 18434 days ago · 3 km deep · 66 km away
  54. 2.17 km WSW of Gilroy, California · 18434 days ago · 4 km deep · 65 km away
  55. 1.94 km E of Fairview, California · 18434 days ago · 4 km deep · 20 km away
  56. 3.11 km ESE of Aromas, California · 18434 days ago · 8 km deep · 75 km away
  57. 2.3Central California · 18433 days ago · 6 km deep · 75 km away
  58. 2.110 km SSW of Brentwood, California · 18433 days ago · 15 km deep · 38 km away
  59. 2.66 km ENE of Aromas, California · 18433 days ago · 4 km deep · 72 km away
  60. 1.94 km E of Fairview, California · 18432 days ago · 5 km deep · 20 km away

The first 60 of 119.

Before

  1. 2.015 km NE of East Foothills, California · 18458 days ago · 5 km deep · 18 km away
  2. 2.23 km NE of Fairview, California · 18459 days ago · 2 km deep · 23 km away
  3. 2.56 km NNE of San Martin, California · 18459 days ago · 5 km deep · 51 km away
  4. 1.87 km E of East Foothills, California · 18459 days ago · 6 km deep · 22 km away
  5. 2.12 km E of North Gate, California · 18460 days ago · 9 km deep · 43 km away
  6. 1.726 km WNW of Diablo Grande, California · 18460 days ago · 5 km deep · 30 km away
  7. 2.31 km NNE of Montara, California · 18460 days ago · 8 km deep · 55 km away
  8. 1.58 km SE of Sunol, California · 18461 days ago · 9 km deep · 6 km away
  9. 1.78 km NE of Gilroy, California · 18461 days ago · 7 km deep · 61 km away
  10. 1.61 km ESE of Tres Pinos, California · 18461 days ago · 7 km deep · 97 km away
  11. 2.318 km WSW of Volta, California · 18461 days ago · 7 km deep · 87 km away
  12. 2.0Northern California · 18461 days ago · 7 km deep · 2 km away
  13. 2.026 km ENE of East Foothills, California · 18461 days ago · 3 km deep · 29 km away
  14. 2.626 km WNW of Diablo Grande, California · 18461 days ago · 5 km deep · 30 km away
  15. 2.510 km NW of Hollister, California · 18462 days ago · 3 km deep · 76 km away
  16. 2.62 km NE of Diablo, California · 18462 days ago · 5 km deep · 36 km away
  17. 1.67 km NE of East Foothills, California · 18463 days ago · 9 km deep · 15 km away
  18. 1.9Central California · 18463 days ago · 4 km deep · 79 km away
  19. 2.910 km NW of Volta, California · 18464 days ago · 2 km deep · 87 km away
  20. 2.46 km S of Sunol, California · 18464 days ago · 7 km deep · 2 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1029205. Read Thu, Oct 1, 2026, 4:25 PM UTC.