California earthquakes

M1.7 earthquake 3 km SW of San Bruno, California

A magnitude 1.7 earthquake struck 3 km SW of San Bruno, California on Sun, Feb 15, 1981, 8:00 AM PST (16:00 UTC), 8 km (5 mi) below the surface.

A larger quake followed: M2.1 9 km SSE of Sunol, California. This one was a foreshock.

San Bruno forecastMore in California

Map

Where this earthquake was located, with the others nearby. Select one for its page.

Open the live map with earthquakes

The earthquake

Magnitude
1.7 (md), micro
Local time
UTC
1981-02-15 16:00:10 UTC
Depth
8.3 km (5.2 mi), shallow
Epicenter
37.607° N, 122.437° 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 0.4 km horizontally, 1.2 km in depth
Magnitude uncertainty
±0.27
Depth from
From location
Station coverage gap
146°
Stations used
18

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 92 in the 60 days after this one and 50 in the 30 days before it.

After

  1. 2.19 km SSE of Sunol, California · 16655 days ago · 9 km deep · 52 km away
  2. 1.712 km ESE of Livermore, California · 16654 days ago · 8 km deep · 70 km away
  3. 2.3Northern California · 16653 days ago · 8 km deep · 61 km away
  4. 1.911 km E of Blackhawk, California · 16653 days ago · 10 km deep · 63 km away
  5. 1.69 km ESE of East Foothills, California · 16651 days ago · 9 km deep · 69 km away
  6. 2.75 km ENE of East Foothills, California · 16650 days ago · 5 km deep · 64 km away
  7. 3.010 km S of Davenport, California · 16649 days ago · 9 km deep · 80 km away
  8. 1.50 km N of Pleasant Hill, California · 16649 days ago · 7 km deep · 51 km away
  9. 2.27 km ENE of San Martin, California · 16648 days ago · 3 km deep · 98 km away
  10. 2.87 km ENE of San Martin, California · 16648 days ago · 3 km deep · 98 km away
  11. 3.17 km ENE of San Martin, California · 16648 days ago · 3 km deep · 98 km away
  12. 1.610 km NE of San Martin, CA · 16648 days ago · 8 km deep · 95 km away
  13. 1.67 km ENE of San Martin, California · 16647 days ago · 3 km deep · 98 km away
  14. 1.58 km ENE of Morgan Hill, California · 16645 days ago · 2 km deep · 92 km away
  15. 2.011 km E of Blackhawk, California · 16645 days ago · 11 km deep · 63 km away
  16. 1.61 km NNW of Pleasant Hill, California · 16643 days ago · 8 km deep · 51 km away
  17. 1.615 km SSE of Livermore, California · 16642 days ago · 2 km deep · 66 km away
  18. 1.615 km SSE of Livermore, California · 16642 days ago · 2 km deep · 66 km away
  19. 1.715 km SSE of Livermore, California · 16642 days ago · 3 km deep · 66 km away
  20. 1.79 km ESE of East Foothills, California · 16642 days ago · 9 km deep · 70 km away
  21. 2.614 km SSE of Livermore, California · 16642 days ago · 2 km deep · 66 km away
  22. 1.64 km NE of Interlaken, California · 16642 days ago · 12 km deep · 96 km away
  23. 2.04 km NE of Interlaken, California · 16642 days ago · 12 km deep · 95 km away
  24. 1.712 km N of Morgan Hill, California · 16641 days ago · 7 km deep · 80 km away
  25. 1.82 km SW of Moskowite Corner, California · 16640 days ago · 8 km deep · 94 km away
  26. 2.34 km E of Fremont, California · 16640 days ago · 10 km deep · 45 km away
  27. 4.45 km E of Fremont, California · 16640 days ago · 12 km deep · 45 km away
  28. 2.25 km E of Fremont, California · 16640 days ago · 10 km deep · 46 km away
  29. 2.15 km E of Fremont, California · 16640 days ago · 9 km deep · 45 km away
  30. 3.05 km E of Fremont, California · 16640 days ago · 11 km deep · 45 km away
  31. 1.74 km E of Fremont, California · 16640 days ago · 8 km deep · 45 km away
  32. 1.65 km E of Fremont, California · 16639 days ago · 9 km deep · 46 km away
  33. 2.45 km E of Fremont, California · 16639 days ago · 9 km deep · 46 km away
  34. 1.64 km E of Fremont, California · 16639 days ago · 14 km deep · 45 km away
  35. 1.65 km E of Fremont, California · 16639 days ago · 6 km deep · 45 km away
  36. 1.86 km E of Fremont, California · 16639 days ago · 9 km deep · 46 km away
  37. 2.15 km E of Fremont, California · 16639 days ago · 9 km deep · 46 km away
  38. 1.75 km E of Fremont, California · 16639 days ago · 9 km deep · 46 km away
  39. 1.85 km E of Fremont, California · 16639 days ago · 9 km deep · 46 km away
  40. 1.73 km E of Fremont, California · 16639 days ago · 8 km deep · 44 km away
  41. 2.05 km E of Fremont, California · 16639 days ago · 9 km deep · 46 km away
  42. 1.74 km E of Fremont, California · 16639 days ago · 9 km deep · 45 km away
  43. 1.65 km E of Fremont, California · 16639 days ago · 10 km deep · 45 km away
  44. 1.84 km E of Fremont, California · 16639 days ago · 9 km deep · 45 km away
  45. 1.85 km SSW of Sunol, California · 16639 days ago · 11 km deep · 46 km away
  46. 2.39 km NNE of Livermore, California · 16639 days ago · 13 km deep · 66 km away
  47. 1.64 km E of Fremont, California · 16639 days ago · 8 km deep · 44 km away
  48. 1.94 km E of Fremont, California · 16639 days ago · 10 km deep · 45 km away
  49. 1.85 km E of Fremont, California · 16638 days ago · 10 km deep · 45 km away
  50. 1.66 km ENE of East Foothills, California · 16638 days ago · 4 km deep · 65 km away
  51. 1.62 km ENE of Pacheco, California · 16637 days ago · 15 km deep · 55 km away
  52. 1.64 km E of Fremont, California · 16636 days ago · 8 km deep · 45 km away
  53. 1.73 km SW of Davenport, California · 16634 days ago · 7 km deep · 72 km away
  54. 2.714 km E of Seven Trees, California · 16634 days ago · 7 km deep · 75 km away
  55. 1.82 km SSW of Pittsburg, California · 16633 days ago · 18 km deep · 65 km away
  56. 1.75 km E of Fremont, California · 16629 days ago · 5 km deep · 46 km away
  57. 1.813 km N of Morgan Hill, California · 16629 days ago · 6 km deep · 81 km away
  58. 1.75 km E of Fremont, California · 16629 days ago · 9 km deep · 45 km away
  59. 2.17 km NNE of Milpitas, California · 16628 days ago · 0 km deep · 51 km away
  60. 1.69 km ESE of East Foothills, California · 16628 days ago · 8 km deep · 69 km away

The first 60 of 92.

Before

  1. 1.52 km WSW of Cupertino, California · 16656 days ago · 4 km deep · 47 km away
  2. 2.77 km ENE of San Martin, California · 16656 days ago · 3 km deep · 97 km away
  3. 2.16 km WNW of Broadmoor, California · 16657 days ago · 4 km deep · 15 km away
  4. 2.315 km SSE of Livermore, California · 16660 days ago · 1 km deep · 67 km away
  5. 3.09 km SW of Brentwood, California · 16660 days ago · 17 km deep · 66 km away
  6. 2.60 km SSE of North Gate, California · 16660 days ago · 11 km deep · 51 km away
  7. 2.39 km NE of San Martin, California · 16661 days ago · 8 km deep · 95 km away
  8. 2.11 km NE of San Leandro, California · 16662 days ago · 6 km deep · 30 km away
  9. 2.07 km NNE of Pittsburg, California · 16662 days ago · 17 km deep · 74 km away
  10. 1.811 km SW of Brentwood, California · 16663 days ago · 14 km deep · 64 km away
  11. 1.59 km ESE of East Foothills, California · 16663 days ago · 8 km deep · 69 km away
  12. 1.96 km SW of Monte Sereno, California · 16664 days ago · 10 km deep · 57 km away
  13. 2.5Northern California · 16664 days ago · 10 km deep · 57 km away
  14. 1.83 km S of Communications Hill, California · 16664 days ago · 5 km deep · 64 km away
  15. 1.69 km NNE of Livermore, California · 16665 days ago · 12 km deep · 66 km away
  16. 1.67 km E of East Foothills, California · 16666 days ago · 9 km deep · 66 km away
  17. 1.67 km E of East Foothills, California · 16666 days ago · 9 km deep · 66 km away
  18. 1.57 km E of East Foothills, California · 16666 days ago · 9 km deep · 66 km away
  19. 1.54 km NNE of Morgan Hill, California · 16667 days ago · 5 km deep · 86 km away
  20. 1.511 km E of Blackhawk, California · 16668 days ago · 5 km deep · 63 km away

Earthquakes todayCalifornia earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1060397. Read Tue, Sep 22, 2026, 10:32 PM UTC.