California earthquakes

M2.1 earthquake 9 km SSE of Sunol, California

A magnitude 2.1 earthquake struck 9 km SSE of Sunol, California on Sun, Feb 15, 1981, 9:17 PM PST (05:17 UTC), 9 km (6 mi) below the surface.

A larger quake followed: M2.3 Northern 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
2.1 (md), micro
Local time
UTC
1981-02-16 05:17:18 UTC
Depth
9.2 km (5.7 mi), shallow
Epicenter
37.511° N, 121.865° 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
±0.12
Depth from
From location
Station coverage gap
55°
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: 162 in the 60 days after this one and 10 in the 30 days before it.

After

  1. 2.12 km NNW of Hollister, California · 16654 days ago · 7 km deep · 81 km away
  2. 1.99 km NNW of Hollister, California · 16654 days ago · 4 km deep · 74 km away
  3. 1.75 km WNW of San Juan Bautista, California · 16653 days ago · 5 km deep · 76 km away
  4. 1.712 km ESE of Livermore, California · 16653 days ago · 8 km deep · 24 km away
  5. 2.3Northern California · 16653 days ago · 8 km deep · 12 km away
  6. 1.63 km S of San Juan Bautista, California · 16653 days ago · 6 km deep · 83 km away
  7. 1.911 km E of Blackhawk, California · 16652 days ago · 10 km deep · 36 km away
  8. 1.59 km SSW of Tres Pinos, California · 16652 days ago · 3 km deep · 100 km away
  9. 2.49 km ESE of Gilroy, California · 16651 days ago · 5 km deep · 68 km away
  10. 1.69 km ESE of East Foothills, California · 16651 days ago · 9 km deep · 21 km away
  11. 1.69 km ESE of Gilroy, California · 16651 days ago · 5 km deep · 68 km away
  12. 1.79 km NNE of Hollister, California · 16649 days ago · 6 km deep · 79 km away
  13. 2.75 km ENE of East Foothills, California · 16649 days ago · 5 km deep · 15 km away
  14. 1.74 km SSE of San Juan Bautista, California · 16649 days ago · 5 km deep · 84 km away
  15. 3.01 km ESE of Aromas, California · 16649 days ago · 9 km deep · 73 km away
  16. 2.12 km ESE of Aromas, California · 16649 days ago · 7 km deep · 74 km away
  17. 1.62 km ESE of Aromas, California · 16649 days ago · 7 km deep · 73 km away
  18. 1.78 km SSW of Tres Pinos, California · 16649 days ago · 3 km deep · 100 km away
  19. 2.52 km ESE of Aromas, California · 16649 days ago · 7 km deep · 74 km away
  20. 3.010 km S of Davenport, California · 16649 days ago · 9 km deep · 72 km away
  21. 2.22 km ESE of Aromas, California · 16648 days ago · 7 km deep · 74 km away
  22. 2.11 km SSW of Tres Pinos, California · 16648 days ago · 6 km deep · 95 km away
  23. 1.50 km N of Pleasant Hill, California · 16648 days ago · 7 km deep · 52 km away
  24. 1.75 km SW of Gilroy, California · 16648 days ago · 5 km deep · 64 km away
  25. 2.52 km ESE of Aromas, California · 16648 days ago · 7 km deep · 74 km away
  26. 2.43 km ESE of Aromas, California · 16648 days ago · 7 km deep · 74 km away
  27. 2.27 km ENE of San Martin, California · 16648 days ago · 3 km deep · 54 km away
  28. 2.87 km ENE of San Martin, California · 16648 days ago · 3 km deep · 54 km away
  29. 3.17 km ENE of San Martin, California · 16647 days ago · 3 km deep · 54 km away
  30. 1.52 km S of San Juan Bautista, California · 16647 days ago · 3 km deep · 82 km away
  31. 1.610 km NNW of Hollister, California · 16647 days ago · 3 km deep · 74 km away
  32. 1.610 km NE of San Martin, CA · 16647 days ago · 8 km deep · 50 km away
  33. 1.67 km ENE of San Martin, California · 16647 days ago · 3 km deep · 54 km away
  34. 1.92 km ESE of Aromas, California · 16646 days ago · 6 km deep · 73 km away
  35. 3.03 km ESE of Aromas, CA · 16646 days ago · 7 km deep · 73 km away
  36. 3.12 km ESE of Aromas, California · 16646 days ago · 7 km deep · 73 km away
  37. 2.53 km ESE of Aromas, CA · 16646 days ago · 7 km deep · 74 km away
  38. 1.5Central California · 16646 days ago · 7 km deep · 74 km away
  39. 3.12 km E of Aromas, California · 16646 days ago · 6 km deep · 73 km away
  40. 1.52 km ESE of Aromas, California · 16646 days ago · 6 km deep · 74 km away
  41. 2.33 km ESE of Aromas, California · 16645 days ago · 7 km deep · 74 km away
  42. 1.53 km ENE of Tres Pinos, California · 16645 days ago · 10 km deep · 94 km away
  43. 1.58 km ENE of Morgan Hill, California · 16644 days ago · 2 km deep · 47 km away
  44. 2.011 km E of Blackhawk, California · 16644 days ago · 11 km deep · 36 km away
  45. 1.813 km NW of Pacific Grove, California · 16643 days ago · 8 km deep · 93 km away
  46. 1.61 km NNW of Pleasant Hill, California · 16642 days ago · 8 km deep · 53 km away
  47. 1.615 km SSE of Livermore, California · 16642 days ago · 2 km deep · 17 km away
  48. 1.615 km SSE of Livermore, California · 16642 days ago · 2 km deep · 17 km away
  49. 1.715 km SSE of Livermore, California · 16641 days ago · 3 km deep · 17 km away
  50. 1.79 km ESE of East Foothills, California · 16641 days ago · 9 km deep · 22 km away
  51. 1.612 km SW of Tres Pinos, California · 16641 days ago · 10 km deep · 99 km away
  52. 2.614 km SSE of Livermore, California · 16641 days ago · 2 km deep · 17 km away
  53. 1.64 km NE of Interlaken, California · 16641 days ago · 12 km deep · 61 km away
  54. 2.04 km NE of Interlaken, California · 16641 days ago · 12 km deep · 61 km away
  55. 1.712 km N of Morgan Hill, California · 16640 days ago · 7 km deep · 35 km away
  56. 2.34 km E of Fremont, California · 16639 days ago · 10 km deep · 7 km away
  57. 4.45 km E of Fremont, California · 16639 days ago · 12 km deep · 7 km away
  58. 2.25 km E of Fremont, California · 16639 days ago · 10 km deep · 6 km away
  59. 2.15 km E of Fremont, California · 16639 days ago · 9 km deep · 7 km away
  60. 3.05 km E of Fremont, California · 16639 days ago · 11 km deep · 7 km away

The first 60 of 162.

Before

  1. 1.82 km NNW of Hollister, California · 16655 days ago · 7 km deep · 81 km away
  2. 1.73 km SW of San Bruno, California · 16655 days ago · 8 km deep · 52 km away
  3. 1.52 km WSW of Cupertino, California · 16656 days ago · 4 km deep · 28 km away
  4. 2.77 km ENE of San Martin, California · 16656 days ago · 3 km deep · 54 km away
  5. 2.16 km WNW of Broadmoor, California · 16656 days ago · 4 km deep · 64 km away
  6. 2.315 km SSE of Livermore, California · 16659 days ago · 1 km deep · 17 km away
  7. 3.09 km SW of Brentwood, California · 16659 days ago · 17 km deep · 41 km away
  8. 1.620 km NE of Tres Pinos, California · 16659 days ago · 1 km deep · 95 km away
  9. 2.60 km SSE of North Gate, California · 16659 days ago · 11 km deep · 45 km away
  10. 1.75 km SSE of Herald, California · 16660 days ago · 0 km deep · 100 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1060424. Read Tue, Sep 22, 2026, 10:00 AM UTC.