California earthquakes

M1.6 earthquake 4 km S of North Gate, California

A magnitude 1.6 earthquake struck 4 km S of North Gate, California on Fri, Apr 6, 1990, 3:16 PM PDT (22:16 UTC), 6 km (4 mi) below the surface.

A larger quake followed: M4.4 3 km SSE of North Gate, California. This one was a foreshock.

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Map

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

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The earthquake

Magnitude
1.6 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
1990-04-06 22:16:44 UTC
Depth
6.5 km (4.0 mi), shallow
Epicenter
37.870° N, 121.993° 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 2.3 km horizontally, 4.3 km in depth
Magnitude uncertainty
±0.33
Depth from
From location
Station coverage gap
192°, poorly surrounded by stations
Stations used
4

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: at least 201 in the 60 days after this one and 68 in the 30 days before it.

After

  1. 1.82 km ENE of Alamo, California · 13329 days ago · 7 km deep · 2 km away
  2. 1.92 km ENE of Alamo, California · 13329 days ago · 6 km deep · 2 km away
  3. 2.02 km ENE of Alamo, California · 13329 days ago · 6 km deep · 2 km away
  4. 3.93 km NE of Alamo, California · 13329 days ago · 9 km deep · 1 km away
  5. 3.24 km SSE of North Gate, California · 13329 days ago · 7 km deep · 1 km away
  6. 1.64 km SSE of North Gate, California · 13329 days ago · 6 km deep · 0 km away
  7. 2.43 km ENE of Alamo, California · 13329 days ago · 6 km deep · 1 km away
  8. 2.43 km ENE of Alamo, California · 13329 days ago · 7 km deep · 1 km away
  9. 2.74 km SSE of North Gate, California · 13329 days ago · 7 km deep · 0 km away
  10. 1.84 km NNW of Diablo, California · 13329 days ago · 6 km deep · 1 km away
  11. 1.63 km ENE of Alamo, California · 13329 days ago · 7 km deep · 1 km away
  12. 1.91 km ENE of Alamo, California · 13329 days ago · 6 km deep · 2 km away
  13. 2.73 km ENE of Alamo, California · 13329 days ago · 6 km deep · 1 km away
  14. 1.54 km SSE of North Gate, California · 13329 days ago · 7 km deep · 1 km away
  15. 2.84 km S of North Gate, California · 13329 days ago · 7 km deep · 0 km away
  16. 1.73 km ENE of Alamo, California · 13329 days ago · 6 km deep · 1 km away
  17. 2.32 km ENE of Alamo, California · 13329 days ago · 6 km deep · 2 km away
  18. 3.02 km ENE of Alamo, California · 13329 days ago · 7 km deep · 2 km away
  19. 1.81 km ENE of Alamo, California · 13329 days ago · 6 km deep · 2 km away
  20. 2.22 km ENE of Alamo, California · 13329 days ago · 6 km deep · 2 km away
  21. 1.61 km ENE of Alamo, California · 13329 days ago · 4 km deep · 2 km away
  22. 1.62 km ENE of Alamo, California · 13329 days ago · 6 km deep · 2 km away
  23. 1.82 km ENE of Alamo, California · 13329 days ago · 5 km deep · 2 km away
  24. 1.71 km ENE of Alamo, California · 13329 days ago · 6 km deep · 2 km away
  25. 1.91 km ENE of Alamo, California · 13329 days ago · 6 km deep · 3 km away
  26. 1.91 km NE of Alamo, California · 13329 days ago · 6 km deep · 3 km away
  27. 1.81 km S of Alamo, California · 13329 days ago · 3 km deep · 5 km away
  28. 2.44 km SSE of North Gate, California · 13329 days ago · 7 km deep · 1 km away
  29. 1.92 km ENE of Alamo, California · 13329 days ago · 5 km deep · 2 km away
  30. 2.42 km ENE of Alamo, California · 13329 days ago · 6 km deep · 2 km away
  31. 2.01 km ENE of Alamo, California · 13329 days ago · 6 km deep · 2 km away
  32. 2.52 km NE of Alamo, California · 13329 days ago · 8 km deep · 2 km away
  33. 4.43 km SSE of North Gate, California · 13329 days ago · 8 km deep · 1 km away
  34. 3.73 km ENE of Alamo, California · 13329 days ago · 6 km deep · 1 km away
  35. 2.43 km ENE of Alamo, California · 13329 days ago · 4 km deep · 1 km away
  36. 1.63 km NW of Diablo, California · 13329 days ago · 3 km deep · 1 km away
  37. 3.63 km SSE of North Gate, California · 13329 days ago · 8 km deep · 1 km away
  38. 3.04 km SSE of North Gate, California · 13329 days ago · 7 km deep · 2 km away
  39. 1.81 km ENE of Alamo, California · 13329 days ago · 5 km deep · 2 km away
  40. 3.24 km SSE of North Gate, California · 13329 days ago · 7 km deep · 2 km away
  41. 2.04 km NNW of Diablo, California · 13329 days ago · 5 km deep · 1 km away
  42. 1.63 km ENE of Alamo, California · 13329 days ago · 5 km deep · 1 km away
  43. 1.84 km SSE of North Gate, California · 13329 days ago · 6 km deep · 1 km away
  44. 1.81 km ENE of Alamo, California · 13329 days ago · 6 km deep · 3 km away
  45. 2.23 km NNW of Diablo, California · 13329 days ago · 6 km deep · 2 km away
  46. 2.44 km NNW of Diablo, California · 13329 days ago · 6 km deep · 1 km away
  47. 1.71 km ENE of Alamo, California · 13329 days ago · 6 km deep · 3 km away
  48. 2.63 km ENE of Alamo, California · 13329 days ago · 6 km deep · 1 km away
  49. 1.94 km ENE of Alamo, California · 13329 days ago · 6 km deep · 0 km away
  50. 2.53 km ENE of Alamo, California · 13329 days ago · 5 km deep · 1 km away
  51. 1.63 km ENE of Alamo, California · 13329 days ago · 6 km deep · 1 km away
  52. 2.01 km NE of Alamo, California · 13329 days ago · 6 km deep · 2 km away
  53. 1.73 km NNW of Diablo, California · 13329 days ago · 6 km deep · 2 km away
  54. 1.84 km NW of Diablo, California · 13329 days ago · 6 km deep · 1 km away
  55. 2.13 km NW of Diablo, California · 13329 days ago · 6 km deep · 1 km away
  56. 1.63 km NW of Diablo, California · 13329 days ago · 6 km deep · 1 km away
  57. 2.94 km SSE of North Gate, California · 13329 days ago · 7 km deep · 2 km away
  58. 3.24 km SSE of North Gate, California · 13329 days ago · 7 km deep · 2 km away
  59. 2.73 km NNW of Diablo, California · 13329 days ago · 4 km deep · 1 km away
  60. 1.92 km ENE of Alamo, California · 13329 days ago · 5 km deep · 2 km away

The first 60 of at least 201.

Before

  1. 1.62 km ENE of Alamo, California · 13329 days ago · 7 km deep · 2 km away
  2. 1.92 km ENE of Alamo, California · 13329 days ago · 6 km deep · 2 km away
  3. 3.02 km NE of Alamo, California · 13330 days ago · 8 km deep · 1 km away
  4. 1.62 km ENE of Alamo, California · 13330 days ago · 6 km deep · 2 km away
  5. 1.54 km ENE of Alamo, California · 13330 days ago · 5 km deep · 1 km away
  6. 2.13 km ENE of Alamo, California · 13330 days ago · 6 km deep · 0 km away
  7. 2.34 km ENE of Alamo, California · 13330 days ago · 6 km deep · 0 km away
  8. 1.63 km ENE of Alamo, California · 13330 days ago · 7 km deep · 1 km away
  9. 1.64 km ENE of Alamo, California · 13330 days ago · 6 km deep · 1 km away
  10. 1.83 km ENE of Alamo, California · 13330 days ago · 5 km deep · 1 km away
  11. 2.12 km ENE of Alamo, California · 13330 days ago · 6 km deep · 1 km away
  12. 2.42 km ENE of Alamo, California · 13330 days ago · 6 km deep · 1 km away
  13. 1.82 km ENE of Alamo, California · 13330 days ago · 5 km deep · 1 km away
  14. 2.43 km ENE of Alamo, California · 13330 days ago · 6 km deep · 0 km away
  15. 3.73 km NE of Alamo, California · 13330 days ago · 8 km deep · 0 km away
  16. 1.62 km SW of Lexington Hills, California · 13331 days ago · 14 km deep · 81 km away
  17. 1.72 km NNW of Seacliff, California · 13331 days ago · 4 km deep · 97 km away
  18. 1.93 km SW of Lexington Hills, California · 13331 days ago · 13 km deep · 81 km away
  19. 1.714 km N of Morgan Hill, California · 13332 days ago · 7 km deep · 74 km away
  20. 1.73 km SW of Lexington Hills, California · 13335 days ago · 13 km deep · 81 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1174873. Read Sun, Oct 4, 2026, 9:32 AM UTC.