California earthquakes

M1.7 earthquake 2 km ENE of Millbrae, California

A magnitude 1.7 earthquake struck 2 km ENE of Millbrae, California on Sat, Oct 28, 1989, 6:46 AM PDT (13:46 UTC), 11 km (7 mi) below the surface.

A larger quake followed: M4.7 6 km NE of Day Valley, California. This one was a foreshock.

Millbrae 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
1.7 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
1989-10-28 13:46:25 UTC
Depth
11.5 km (7.1 mi), shallow
Epicenter
37.609° N, 122.360° 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
±0.16
Depth from
From location
Station coverage gap
60°
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: 195 in the 60 days after this one and 196 in the 30 days before it.

After

  1. 2.22 km ENE of Corralitos, California · 13488 days ago · 12 km deep · 85 km away
  2. 1.72 km NE of Corralitos, California · 13488 days ago · 15 km deep · 84 km away
  3. 1.55 km ENE of Day Valley, California · 13488 days ago · 10 km deep · 79 km away
  4. 2.16 km ESE of Lexington Hills, California · 13488 days ago · 9 km deep · 66 km away
  5. 1.58 km N of Day Valley, California · 13488 days ago · 3 km deep · 70 km away
  6. 1.64 km ESE of Lexington Hills, California · 13488 days ago · 12 km deep · 64 km away
  7. 1.65 km WNW of Broadmoor, California · 13488 days ago · 4 km deep · 19 km away
  8. 1.54 km SW of Lexington Hills, California · 13488 days ago · 17 km deep · 61 km away
  9. 2.13 km SSW of Seacliff, California · 13488 days ago · 4 km deep · 82 km away
  10. 1.83 km S of Lexington Hills, California · 13488 days ago · 14 km deep · 62 km away
  11. 1.53 km NNW of Aromas, California · 13488 days ago · 9 km deep · 99 km away
  12. 1.54 km NNW of Aromas, California · 13488 days ago · 7 km deep · 98 km away
  13. 1.95 km NW of Day Valley, California · 13488 days ago · 14 km deep · 72 km away
  14. 1.69 km SW of Davenport, California · 13488 days ago · 8 km deep · 75 km away
  15. 1.91 km NE of Interlaken, California · 13488 days ago · 14 km deep · 91 km away
  16. 1.52 km SE of Day Valley, California · 13488 days ago · 14 km deep · 80 km away
  17. 1.65 km ESE of Lexington Hills, California · 13488 days ago · 8 km deep · 65 km away
  18. 1.87 km WNW of Day Valley, California · 13487 days ago · 16 km deep · 70 km away
  19. 1.52 km NNE of Day Valley, California · 13487 days ago · 12 km deep · 76 km away
  20. 2.04 km ESE of Interlaken, California · 13487 days ago · 11 km deep · 96 km away
  21. 3.14 km NW of Day Valley, California · 13487 days ago · 16 km deep · 73 km away
  22. 1.95 km N of Corralitos, California · 13487 days ago · 3 km deep · 81 km away
  23. 2.12 km NNW of Aromas, California · 13487 days ago · 9 km deep · 100 km away
  24. 1.60 km N of Lexington Hills, California · 13487 days ago · 9 km deep · 59 km away
  25. 1.84 km N of Corralitos, California · 13487 days ago · 11 km deep · 81 km away
  26. 1.78 km N of Day Valley, California · 13487 days ago · 4 km deep · 70 km away
  27. 1.62 km NNW of Aromas, California · 13487 days ago · 9 km deep · 100 km away
  28. 1.51 km WSW of Aptos Hills-Larkin Valley, California · 13487 days ago · 4 km deep · 85 km away
  29. 1.63 km NE of Amesti, California · 13487 days ago · 15 km deep · 88 km away
  30. 2.43 km ESE of Day Valley, California · 13487 days ago · 16 km deep · 80 km away
  31. 2.34 km NNW of Day Valley, California · 13487 days ago · 13 km deep · 73 km away
  32. 3.07 km NNW of Day Valley, California · 13487 days ago · 10 km deep · 70 km away
  33. 1.77 km NNW of Day Valley, California · 13487 days ago · 9 km deep · 70 km away
  34. 1.77 km NE of Interlaken, California · 13487 days ago · 2 km deep · 92 km away
  35. 2.08 km SSW of Davenport, California · 13487 days ago · 4 km deep · 74 km away
  36. 1.98 km NNE of Day Valley, California · 13487 days ago · 5 km deep · 73 km away
  37. 2.47 km SW of Davenport, California · 13487 days ago · 6 km deep · 72 km away
  38. 1.64 km NW of Day Valley, California · 13487 days ago · 15 km deep · 73 km away
  39. 1.74 km E of Interlaken, California · 13487 days ago · 11 km deep · 95 km away
  40. 1.85 km NNW of Aromas, California · 13487 days ago · 10 km deep · 97 km away
  41. 2.54 km NW of Day Valley, California · 13487 days ago · 14 km deep · 73 km away
  42. 3.04 km ESE of Interlaken, California · 13487 days ago · 12 km deep · 96 km away
  43. 2.15 km N of Interlaken, California · 13486 days ago · 9 km deep · 87 km away
  44. 1.8Central California · 13486 days ago · 9 km deep · 94 km away
  45. 1.62 km NNE of Day Valley, California · 13486 days ago · 12 km deep · 76 km away
  46. 1.73 km ESE of Day Valley, California · 13486 days ago · 16 km deep · 81 km away
  47. 1.7Northern California · 13486 days ago · 9 km deep · 77 km away
  48. 1.77 km NNE of Day Valley, California · 13486 days ago · 2 km deep · 74 km away
  49. 1.84 km ESE of Interlaken, California · 13486 days ago · 10 km deep · 96 km away
  50. 4.06 km NE of Day Valley, California · 13486 days ago · 9 km deep · 77 km away
  51. 1.86 km NW of Day Valley, California · 13486 days ago · 15 km deep · 71 km away
  52. 1.62 km N of Lexington Hills, California · 13486 days ago · 2 km deep · 58 km away
  53. 2.16 km ESE of Lexington Hills, California · 13486 days ago · 9 km deep · 66 km away
  54. 1.915 km N of Morgan Hill, California · 13486 days ago · 7 km deep · 74 km away
  55. 1.66 km NE of Day Valley, California · 13486 days ago · 9 km deep · 77 km away
  56. 1.815 km N of Morgan Hill, California · 13486 days ago · 7 km deep · 74 km away
  57. 2.12 km N of Lexington Hills, California · 13486 days ago · 2 km deep · 58 km away
  58. 1.87 km SW of Gilroy, California · 13486 days ago · 0 km deep · 96 km away
  59. 2.47 km SE of Lexington Hills, California · 13486 days ago · 3 km deep · 67 km away
  60. 1.77 km E of San Martin, California · 13486 days ago · 2 km deep · 95 km away

The first 60 of 195.

Before

  1. 1.82 km SSW of Lexington Hills, California · 13488 days ago · 14 km deep · 62 km away
  2. 1.61 km NNE of Interlaken, California · 13488 days ago · 15 km deep · 91 km away
  3. 2.05 km N of Lompico, California · 13488 days ago · 13 km deep · 57 km away
  4. 1.72 km NE of Corralitos, California · 13488 days ago · 15 km deep · 84 km away
  5. 2.65 km W of Broadmoor, California · 13488 days ago · 8 km deep · 19 km away
  6. 1.93 km NNW of Aromas, California · 13488 days ago · 6 km deep · 99 km away
  7. 1.75 km N of Corralitos, California · 13488 days ago · 8 km deep · 81 km away
  8. 1.54 km ENE of Interlaken, California · 13489 days ago · 5 km deep · 93 km away
  9. 1.83 km NNW of Day Valley, California · 13489 days ago · 11 km deep · 74 km away
  10. 1.83 km SSW of Lexington Hills, California · 13489 days ago · 15 km deep · 62 km away
  11. 2.25 km WNW of Day Valley, California · 13489 days ago · 17 km deep · 72 km away
  12. 1.61 km NE of Interlaken, California · 13489 days ago · 14 km deep · 92 km away
  13. 3.04 km NNE of Amesti, California · 13489 days ago · 12 km deep · 86 km away
  14. 1.53 km ENE of Corralitos, California · 13489 days ago · 14 km deep · 86 km away
  15. 1.71 km NNW of Corralitos, California · 13489 days ago · 16 km deep · 83 km away
  16. 2.35 km NNW of Aromas, California · 13489 days ago · 7 km deep · 97 km away
  17. 1.55 km ESE of Interlaken, California · 13489 days ago · 12 km deep · 96 km away
  18. 2.75 km E of East Foothills, California · 13489 days ago · 2 km deep · 59 km away
  19. 1.97 km N of Day Valley, California · 13489 days ago · 4 km deep · 72 km away
  20. 2.14 km E of Interlaken, California · 13489 days ago · 10 km deep · 95 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc206655. Read Fri, Oct 2, 2026, 6:50 PM UTC.