California earthquakes

M1.6 earthquake 19 km S of Three Rocks, California

A magnitude 1.6 earthquake struck 19 km S of Three Rocks, California on Sat, Oct 20, 1990, 5:38 AM PDT (12:38 UTC), 8 km (5 mi) below the surface.

A larger quake followed: M4.0 11 km SSW of Oak Shores, California. This one was a foreshock.

Coalinga 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
1.6 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
1990-10-20 12:38:41 UTC
Depth
8.4 km (5.2 mi), shallow
Epicenter
36.329° N, 120.370° 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 1.0 km horizontally, 1.1 km in depth
Magnitude uncertainty
±0.13
Depth from
From location
Station coverage gap
133°
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: 121 in the 60 days after this one and 68 in the 30 days before it.

After

  1. 1.913 km S of Tres Pinos, California · 13133 days ago · 4 km deep · 91 km away
  2. 1.718 km N of Coalinga, California · 13132 days ago · 3 km deep · 5 km away
  3. 1.54 km NW of Parkfield, California · 13132 days ago · 4 km deep · 46 km away
  4. 3.38 km E of Coalinga, California · 13132 days ago · 10 km deep · 22 km away
  5. 1.731 km ENE of Soledad, California · 13130 days ago · 8 km deep · 65 km away
  6. 1.730 km ENE of Soledad, California · 13130 days ago · 8 km deep · 65 km away
  7. 1.813 km N of Coalinga, California · 13130 days ago · 7 km deep · 7 km away
  8. 1.725 km NE of Soledad, California · 13130 days ago · 5 km deep · 76 km away
  9. 2.223 km ENE of San Lucas, California · 13129 days ago · 9 km deep · 40 km away
  10. 2.313 km SSE of Tres Pinos, California · 13128 days ago · 5 km deep · 91 km away
  11. 2.014 km N of Coalinga, California · 13128 days ago · 9 km deep · 6 km away
  12. 1.623 km NE of Soledad, California · 13127 days ago · 8 km deep · 71 km away
  13. 1.624 km NE of Greenfield, California · 13126 days ago · 6 km deep · 62 km away
  14. 2.79 km WSW of Huron, California · 13125 days ago · 6 km deep · 22 km away
  15. 2.64 km SSW of San Ardo, California · 13125 days ago · 12 km deep · 63 km away
  16. 1.85 km SE of Cantua Creek, California · 13125 days ago · 3 km deep · 17 km away
  17. 2.024 km NE of Greenfield, California · 13124 days ago · 2 km deep · 62 km away
  18. 2.622 km NE of Soledad, California · 13124 days ago · 4 km deep · 78 km away
  19. 2.220 km NW of Parkfield, California · 13123 days ago · 4 km deep · 38 km away
  20. 1.88 km SSW of Tres Pinos, California · 13123 days ago · 3 km deep · 99 km away
  21. 1.724 km NE of Greenfield, California · 13123 days ago · 5 km deep · 62 km away
  22. 1.712 km S of Tres Pinos, California · 13122 days ago · 2 km deep · 92 km away
  23. 1.921 km NE of Soledad, California · 13122 days ago · 3 km deep · 78 km away
  24. 1.723 km ENE of Soledad, California · 13121 days ago · 4 km deep · 66 km away
  25. 1.623 km NNE of San Ardo, California · 13121 days ago · 7 km deep · 38 km away
  26. 1.88 km NE of Avenal, California · 13120 days ago · 17 km deep · 42 km away
  27. 1.85 km NE of Avenal, California · 13120 days ago · 14 km deep · 40 km away
  28. 1.70 km W of Avenal, California · 13120 days ago · 9 km deep · 42 km away
  29. 2.05 km NE of Avenal, California · 13120 days ago · 16 km deep · 41 km away
  30. 2.022 km ENE of San Ardo, California · 13120 days ago · 2 km deep · 37 km away
  31. 1.57 km N of Avenal, California · 13120 days ago · 7 km deep · 36 km away
  32. 2.19 km SSW of Tres Pinos, California · 13119 days ago · 2 km deep · 98 km away
  33. 1.55 km WNW of Parkfield, California · 13118 days ago · 5 km deep · 46 km away
  34. 1.921 km NE of Soledad, California · 13118 days ago · 6 km deep · 75 km away
  35. 1.714 km WSW of Lockwood, California · 13117 days ago · 9 km deep · 91 km away
  36. 2.037 km SSW of South Dos Palos, California · 13113 days ago · 6 km deep · 57 km away
  37. 4.011 km SSW of Oak Shores, California · 13112 days ago · 8 km deep · 94 km away
  38. 2.88 km NNE of Avenal, California · 13110 days ago · 6 km deep · 36 km away
  39. 1.68 km N of Avenal, California · 13109 days ago · 6 km deep · 36 km away
  40. 2.121 km NE of Soledad, California · 13108 days ago · 6 km deep · 74 km away
  41. 2.79 km S of Tres Pinos, California · 13108 days ago · 3 km deep · 96 km away
  42. 3.110 km NW of Parkfield, California · 13108 days ago · 7 km deep · 43 km away
  43. 1.69 km ENE of Tres Pinos, California · 13107 days ago · 7 km deep · 95 km away
  44. 2.411 km NW of Parkfield, California · 13106 days ago · 7 km deep · 43 km away
  45. 2.321 km NE of Soledad, California · 13106 days ago · 5 km deep · 75 km away
  46. 2.124 km WSW of Coalinga, California · 13105 days ago · 6 km deep · 37 km away
  47. 2.323 km ENE of San Lucas, California · 13105 days ago · 5 km deep · 39 km away
  48. 1.724 km NE of King City, California · 13105 days ago · 1 km deep · 53 km away
  49. 1.522 km ENE of San Ardo, California · 13103 days ago · 2 km deep · 37 km away
  50. 1.719 km NNW of Coalinga, California · 13103 days ago · 12 km deep · 8 km away
  51. 1.623 km NNE of San Lucas, California · 13103 days ago · 6 km deep · 47 km away
  52. 1.712 km NNW of Avenal, California · 13102 days ago · 18 km deep · 30 km away
  53. 2.122 km NE of Soledad, California · 13102 days ago · 4 km deep · 78 km away
  54. 1.521 km NE of Soledad, California · 13102 days ago · 6 km deep · 75 km away
  55. 2.8Central California · 13102 days ago · 3 km deep · 96 km away
  56. 2.25 km S of Cantua Creek, California · 13102 days ago · 4 km deep · 14 km away
  57. 1.99 km SSW of Tres Pinos, California · 13101 days ago · 3 km deep · 97 km away
  58. 1.621 km NE of Soledad, California · 13101 days ago · 7 km deep · 74 km away
  59. 2.015 km NW of Parkfield, California · 13100 days ago · 4 km deep · 40 km away
  60. 2.524 km ENE of Soledad, California · 13099 days ago · 3 km deep · 66 km away

The first 60 of 121.

Before

  1. 1.62 km SSW of Avenal, California · 13133 days ago · 21 km deep · 44 km away
  2. 1.618 km NW of Parkfield, California · 13133 days ago · 4 km deep · 39 km away
  3. 1.95 km S of Avenal, California · 13133 days ago · 16 km deep · 47 km away
  4. 1.85 km S of Avenal, California · 13133 days ago · 15 km deep · 46 km away
  5. 1.96 km WSW of Three Rocks, California · 13134 days ago · 11 km deep · 20 km away
  6. 1.923 km SE of Tres Pinos, California · 13134 days ago · 8 km deep · 78 km away
  7. 1.8Central California · 13134 days ago · 11 km deep · 8 km away
  8. 1.820 km SSE of Tres Pinos, California · 13134 days ago · 4 km deep · 83 km away
  9. 2.38km NNE of Corcoran, CA · 13135 days ago · 5 km deep · 77 km away
  10. 1.623 km ENE of Soledad, California · 13136 days ago · 4 km deep · 68 km away
  11. 1.821 km NE of Soledad, California · 13136 days ago · 8 km deep · 72 km away
  12. 1.617 km SW of Lockwood, California · 13137 days ago · 6 km deep · 94 km away
  13. 1.821 km NE of Soledad, California · 13138 days ago · 3 km deep · 76 km away
  14. 2.213 km S of Tres Pinos, California · 13138 days ago · 5 km deep · 91 km away
  15. 2.124 km ENE of Greenfield, California · 13138 days ago · 0 km deep · 59 km away
  16. 1.65 km SSE of Tres Pinos, California · 13138 days ago · 4 km deep · 95 km away
  17. 2.324 km NE of Greenfield, California · 13138 days ago · 7 km deep · 62 km away
  18. 1.6Central California · 13139 days ago · 10 km deep · 78 km away
  19. 2.121 km NE of Soledad, California · 13140 days ago · 2 km deep · 75 km away
  20. 1.89 km N of Coalinga, California · 13140 days ago · 12 km deep · 11 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc165586 (also filed as ci2006657). Read Sun, Oct 4, 2026, 10:59 AM UTC.