California earthquakes

M2.0 earthquake 5 km SSE of Sunol, California

A magnitude 2.0 earthquake struck 5 km SSE of Sunol, California on Tue, Aug 8, 1978, 4:19 PM PDT (23:19 UTC), 8 km (5 mi) below the surface.

A larger quake followed: M4.2 37km SSW of Half Moon Bay, CA. 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
2.0 (md), micro
Local time
UTC
1978-08-08 23:19:14 UTC
Depth
7.6 km (4.7 mi), shallow
Epicenter
37.547° N, 121.867° 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
±0.13
Depth from
From location
Station coverage gap
51°
Stations used
39

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 86 in the 60 days after this one and 32 in the 30 days before it.

After

  1. 1.85 km NNE of Crockett, California · 17584 days ago · 1 km deep · 67 km away
  2. 2.510 km SW of Ridgemark, California · 17583 days ago · 6 km deep · 95 km away
  3. 2.32 km NE of East Foothills, California · 17582 days ago · 0 km deep · 17 km away
  4. 2.46 km NE of East Foothills, California · 17582 days ago · 8 km deep · 17 km away
  5. 1.83 km NNW of Hollister, California · 17582 days ago · 7 km deep · 84 km away
  6. 1.71 km WSW of Tres Pinos, California · 17579 days ago · 6 km deep · 97 km away
  7. 1.91 km ENE of Alamo, California · 17579 days ago · 7 km deep · 37 km away
  8. 1.810 km SE of Sunol, California · 17579 days ago · 5 km deep · 6 km away
  9. 1.67 km NNE of Corralitos, California · 17577 days ago · 13 km deep · 56 km away
  10. 1.69 km NW of Hollister, California · 17577 days ago · 4 km deep · 78 km away
  11. 2.6Central California · 17576 days ago · 7 km deep · 84 km away
  12. 1.86 km NNE of Ridgemark, California · 17575 days ago · 6 km deep · 90 km away
  13. 1.68 km N of Morgan Hill, California · 17572 days ago · 4 km deep · 43 km away
  14. 1.72 km SW of San Juan Bautista, California · 17572 days ago · 7 km deep · 84 km away
  15. 2.31 km SW of Los Altos Hills, California · 17571 days ago · 4 km deep · 31 km away
  16. 2.33 km E of Berkeley, California · 17571 days ago · 10 km deep · 48 km away
  17. 2.08 km WSW of Saratoga, California · 17570 days ago · 10 km deep · 42 km away
  18. 3.126 km WNW of Diablo Grande, California · 17569 days ago · 5 km deep · 29 km away
  19. 1.64 km SW of Tres Pinos, California · 17569 days ago · 6 km deep · 99 km away
  20. 1.78 km NE of Gilroy, California · 17567 days ago · 8 km deep · 64 km away
  21. 2.23 km NNW of Hollister, California · 17566 days ago · 7 km deep · 84 km away
  22. 1.53 km W of Ridgemark, California · 17566 days ago · 7 km deep · 91 km away
  23. 2.32 km ESE of Tres Pinos, California · 17566 days ago · 9 km deep · 99 km away
  24. 3.26 km SE of Sunol, California · 17566 days ago · 10 km deep · 3 km away
  25. 1.92 km ESE of Aromas, California · 17566 days ago · 7 km deep · 77 km away
  26. 2.115 km SE of Livermore, California · 17565 days ago · 2 km deep · 17 km away
  27. 2.39 km ESE of East Foothills, California · 17565 days ago · 7 km deep · 26 km away
  28. 1.79 km ESE of East Foothills, California · 17565 days ago · 8 km deep · 26 km away
  29. 4.19 km ESE of East Foothills, California · 17565 days ago · 8 km deep · 25 km away
  30. 2.010 km ESE of East Foothills, California · 17565 days ago · 8 km deep · 26 km away
  31. 1.89 km ESE of East Foothills, California · 17565 days ago · 8 km deep · 25 km away
  32. 3.810 km ESE of East Foothills, California · 17565 days ago · 8 km deep · 27 km away
  33. 1.59 km ESE of East Foothills, California · 17565 days ago · 7 km deep · 26 km away
  34. 2.210 km ESE of East Foothills, California · 17565 days ago · 7 km deep · 26 km away
  35. 2.69 km ESE of East Foothills, California · 17565 days ago · 8 km deep · 25 km away
  36. 2.59 km ESE of East Foothills, California · 17565 days ago · 5 km deep · 25 km away
  37. 1.510 km ESE of East Foothills, California · 17565 days ago · 8 km deep · 27 km away
  38. 2.110 km ESE of East Foothills, California · 17565 days ago · 7 km deep · 27 km away
  39. 1.810 km ESE of East Foothills, California · 17565 days ago · 7 km deep · 26 km away
  40. 1.610 km ESE of East Foothills, California · 17565 days ago · 7 km deep · 26 km away
  41. 2.010 km ESE of East Foothills, California · 17564 days ago · 8 km deep · 27 km away
  42. 2.410 km ESE of East Foothills, California · 17564 days ago · 8 km deep · 26 km away
  43. 1.510 km ESE of East Foothills, California · 17564 days ago · 8 km deep · 26 km away
  44. 1.716 km NE of East Foothills, California · 17563 days ago · 6 km deep · 17 km away
  45. 1.710 km ESE of East Foothills, California · 17563 days ago · 7 km deep · 26 km away
  46. 2.02 km N of San Ramon, California · 17562 days ago · 8 km deep · 30 km away
  47. 2.46 km ENE of Seven Trees, California · 17562 days ago · 5 km deep · 27 km away
  48. 2.46 km ENE of Seven Trees, California · 17562 days ago · 6 km deep · 27 km away
  49. 3.36 km ENE of Seven Trees, California · 17562 days ago · 5 km deep · 27 km away
  50. 1.713 km E of Seven Trees, California · 17560 days ago · 1 km deep · 32 km away
  51. 1.87 km NE of Interlaken, California · 17560 days ago · 4 km deep · 63 km away
  52. 1.92 km ENE of Ridgemark, California · 17559 days ago · 6 km deep · 93 km away
  53. 1.79 km ESE of Gilroy, California · 17558 days ago · 4 km deep · 73 km away
  54. 2.66 km ENE of Seven Trees, California · 17557 days ago · 5 km deep · 27 km away
  55. 1.86 km NE of Ridgemark, California · 17555 days ago · 5 km deep · 91 km away
  56. 1.81 km SE of East Foothills, California · 17555 days ago · 5 km deep · 21 km away
  57. 1.63 km NE of Tres Pinos, California · 17554 days ago · 8 km deep · 96 km away
  58. 2.35 km ENE of Aromas, California · 17553 days ago · 8 km deep · 74 km away
  59. 2.46 km ENE of Seven Trees, California · 17552 days ago · 5 km deep · 27 km away
  60. 2.26 km E of East Foothills, California · 17551 days ago · 7 km deep · 22 km away

The first 60 of 86.

Before

  1. 1.512 km SE of Livermore, California · 17588 days ago · 4 km deep · 19 km away
  2. 1.65 km SSW of Gilroy, California · 17588 days ago · 6 km deep · 70 km away
  3. 2.03 km E of San Leandro, California · 17591 days ago · 9 km deep · 30 km away
  4. 1.72 km SW of Ridgemark, California · 17593 days ago · 7 km deep · 94 km away
  5. 2.02 km E of San Leandro, California · 17593 days ago · 10 km deep · 30 km away
  6. 2.13 km E of San Leandro, California · 17594 days ago · 9 km deep · 30 km away
  7. 3.03 km E of San Leandro, California · 17594 days ago · 10 km deep · 30 km away
  8. 2.03 km ESE of Tres Pinos, California · 17596 days ago · 9 km deep · 100 km away
  9. 2.11 km NNE of Diablo, California · 17596 days ago · 7 km deep · 34 km away
  10. 2.09 km NNW of Hollister, California · 17597 days ago · 5 km deep · 79 km away
  11. 2.13 km NNE of Castro Valley, California · 17598 days ago · 10 km deep · 27 km away
  12. 3.03 km NNE of Castro Valley, California · 17598 days ago · 11 km deep · 27 km away
  13. 2.63 km NNE of Castro Valley, California · 17598 days ago · 10 km deep · 27 km away
  14. 1.92 km W of Tres Pinos, California · 17598 days ago · 2 km deep · 96 km away
  15. 2.08 km ENE of San Martin, California · 17598 days ago · 7 km deep · 56 km away
  16. 1.75 km ESE of San Ramon, California · 17601 days ago · 7 km deep · 24 km away
  17. 2.22 km SW of West Menlo Park, California · 17602 days ago · 6 km deep · 34 km away
  18. 2.413 km N of Morgan Hill, California · 17604 days ago · 5 km deep · 38 km away
  19. 2.23 km ENE of San Leandro, California · 17605 days ago · 8 km deep · 31 km away
  20. 1.711 km ESE of Seven Trees, California · 17605 days ago · 4 km deep · 35 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1041534. Read Wed, Sep 30, 2026, 10:12 PM UTC.