California earthquakes

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

A magnitude 1.6 earthquake struck 4 km SSE of North Gate, California on Fri, Apr 6, 1990, 3:46 PM PDT (22:46 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 22:46:16 UTC
Depth
6.4 km (3.9 mi), shallow
Epicenter
37.870° N, 121.988° 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 2.4 km horizontally, 4.7 km in depth
Magnitude uncertainty
±0.06
Depth from
From location
Station coverage gap
187°, 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: 200 in the 60 days after this one and 74 in the 30 days before it.

After

  1. 2.43 km ENE of Alamo, California · 13329 days ago · 6 km deep · 1 km away
  2. 2.43 km ENE of Alamo, California · 13329 days ago · 7 km deep · 1 km away
  3. 2.74 km SSE of North Gate, California · 13329 days ago · 7 km deep · 0 km away
  4. 1.84 km NNW of Diablo, California · 13329 days ago · 6 km deep · 0 km away
  5. 1.63 km ENE of Alamo, California · 13329 days ago · 7 km deep · 1 km away
  6. 1.91 km ENE of Alamo, California · 13329 days ago · 6 km deep · 3 km away
  7. 2.73 km ENE of Alamo, California · 13329 days ago · 6 km deep · 1 km away
  8. 1.54 km SSE of North Gate, California · 13329 days ago · 7 km deep · 0 km away
  9. 2.84 km S of North Gate, California · 13329 days ago · 7 km deep · 0 km away
  10. 1.73 km ENE of Alamo, California · 13329 days ago · 6 km deep · 1 km away
  11. 2.32 km ENE of Alamo, California · 13329 days ago · 6 km deep · 2 km away
  12. 3.02 km ENE of Alamo, California · 13329 days ago · 7 km deep · 2 km away
  13. 1.81 km ENE of Alamo, California · 13329 days ago · 6 km deep · 2 km away
  14. 2.22 km ENE of Alamo, California · 13329 days ago · 6 km deep · 2 km away
  15. 1.61 km ENE of Alamo, California · 13329 days ago · 4 km deep · 3 km away
  16. 1.62 km ENE of Alamo, California · 13329 days ago · 6 km deep · 2 km away
  17. 1.82 km ENE of Alamo, California · 13329 days ago · 5 km deep · 2 km away
  18. 1.71 km ENE of Alamo, California · 13329 days ago · 6 km deep · 3 km away
  19. 1.91 km ENE of Alamo, California · 13329 days ago · 6 km deep · 3 km away
  20. 1.91 km NE of Alamo, California · 13329 days ago · 6 km deep · 3 km away
  21. 1.81 km S of Alamo, California · 13329 days ago · 3 km deep · 5 km away
  22. 2.44 km SSE of North Gate, California · 13329 days ago · 7 km deep · 0 km away
  23. 1.92 km ENE of Alamo, California · 13329 days ago · 5 km deep · 2 km away
  24. 2.42 km ENE of Alamo, California · 13329 days ago · 6 km deep · 2 km away
  25. 2.01 km ENE of Alamo, California · 13329 days ago · 6 km deep · 3 km away
  26. 2.52 km NE of Alamo, California · 13329 days ago · 8 km deep · 3 km away
  27. 4.43 km SSE of North Gate, California · 13329 days ago · 8 km deep · 1 km away
  28. 3.73 km ENE of Alamo, California · 13329 days ago · 6 km deep · 1 km away
  29. 2.43 km ENE of Alamo, California · 13329 days ago · 4 km deep · 1 km away
  30. 1.63 km NW of Diablo, California · 13329 days ago · 3 km deep · 1 km away
  31. 3.63 km SSE of North Gate, California · 13329 days ago · 8 km deep · 1 km away
  32. 3.04 km SSE of North Gate, California · 13329 days ago · 7 km deep · 1 km away
  33. 1.81 km ENE of Alamo, California · 13329 days ago · 5 km deep · 3 km away
  34. 3.24 km SSE of North Gate, California · 13329 days ago · 7 km deep · 1 km away
  35. 2.04 km NNW of Diablo, California · 13329 days ago · 5 km deep · 1 km away
  36. 1.63 km ENE of Alamo, California · 13329 days ago · 5 km deep · 1 km away
  37. 1.84 km SSE of North Gate, California · 13329 days ago · 6 km deep · 0 km away
  38. 1.81 km ENE of Alamo, California · 13329 days ago · 6 km deep · 3 km away
  39. 2.23 km NNW of Diablo, California · 13329 days ago · 6 km deep · 1 km away
  40. 2.44 km NNW of Diablo, California · 13329 days ago · 6 km deep · 1 km away
  41. 1.71 km ENE of Alamo, California · 13329 days ago · 6 km deep · 3 km away
  42. 2.63 km ENE of Alamo, California · 13329 days ago · 6 km deep · 1 km away
  43. 1.94 km ENE of Alamo, California · 13329 days ago · 6 km deep · 0 km away
  44. 2.53 km ENE of Alamo, California · 13329 days ago · 5 km deep · 1 km away
  45. 1.63 km ENE of Alamo, California · 13329 days ago · 6 km deep · 1 km away
  46. 2.01 km NE of Alamo, California · 13329 days ago · 6 km deep · 3 km away
  47. 1.73 km NNW of Diablo, California · 13329 days ago · 6 km deep · 1 km away
  48. 1.84 km NW of Diablo, California · 13328 days ago · 6 km deep · 1 km away
  49. 2.13 km NW of Diablo, California · 13328 days ago · 6 km deep · 1 km away
  50. 1.63 km NW of Diablo, California · 13328 days ago · 6 km deep · 1 km away
  51. 2.94 km SSE of North Gate, California · 13328 days ago · 7 km deep · 1 km away
  52. 3.24 km SSE of North Gate, California · 13328 days ago · 7 km deep · 1 km away
  53. 2.73 km NNW of Diablo, California · 13328 days ago · 4 km deep · 1 km away
  54. 1.92 km ENE of Alamo, California · 13328 days ago · 5 km deep · 2 km away
  55. 2.34 km SSE of North Gate, California · 13328 days ago · 7 km deep · 1 km away
  56. 2.32 km ENE of Alamo, California · 13328 days ago · 6 km deep · 2 km away
  57. 1.61 km ENE of Alamo, California · 13328 days ago · 6 km deep · 3 km away
  58. 1.91 km ENE of Alamo, California · 13328 days ago · 6 km deep · 3 km away
  59. 1.63 km NW of Diablo, California · 13328 days ago · 5 km deep · 1 km away
  60. 2.54 km SSE of North Gate, California · 13328 days ago · 7 km deep · 1 km away

The first 60 of 200.

Before

  1. 3.24 km SSE of North Gate, California · 13329 days ago · 7 km deep · 0 km away
  2. 3.93 km NE of Alamo, California · 13329 days ago · 9 km deep · 1 km away
  3. 2.02 km ENE of Alamo, California · 13329 days ago · 6 km deep · 2 km away
  4. 1.92 km ENE of Alamo, California · 13329 days ago · 6 km deep · 2 km away
  5. 1.82 km ENE of Alamo, California · 13329 days ago · 7 km deep · 2 km away
  6. 1.64 km S of North Gate, California · 13329 days ago · 6 km deep · 0 km away
  7. 1.62 km ENE of Alamo, California · 13329 days ago · 7 km deep · 2 km away
  8. 1.92 km ENE of Alamo, California · 13329 days ago · 6 km deep · 2 km away
  9. 3.02 km NE of Alamo, California · 13329 days ago · 8 km deep · 2 km away
  10. 1.62 km ENE of Alamo, California · 13329 days ago · 6 km deep · 2 km away
  11. 1.54 km ENE of Alamo, California · 13329 days ago · 5 km deep · 1 km away
  12. 2.13 km ENE of Alamo, California · 13329 days ago · 6 km deep · 0 km away
  13. 2.34 km ENE of Alamo, California · 13329 days ago · 6 km deep · 0 km away
  14. 1.63 km ENE of Alamo, California · 13329 days ago · 7 km deep · 1 km away
  15. 1.64 km ENE of Alamo, California · 13329 days ago · 6 km deep · 0 km away
  16. 1.83 km ENE of Alamo, California · 13329 days ago · 5 km deep · 1 km away
  17. 2.12 km ENE of Alamo, California · 13329 days ago · 6 km deep · 2 km away
  18. 2.42 km ENE of Alamo, California · 13329 days ago · 6 km deep · 2 km away
  19. 1.82 km ENE of Alamo, California · 13329 days ago · 5 km deep · 2 km away
  20. 2.43 km ENE of Alamo, California · 13329 days ago · 6 km deep · 1 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1174876. Read Sat, Oct 3, 2026, 3:38 PM UTC.