California earthquakes

M1.9 earthquake 21 km W of Three Rocks, California

A magnitude 1.9 earthquake struck 21 km W of Three Rocks, California on Thu, Aug 16, 1990, 9:00 AM PDT (16:00 UTC), 9 km (6 mi) below the surface.

A larger quake followed: M4.4 14 km S of Tres Pinos, 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
1.9 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
1990-08-16 16:00:11 UTC
Depth
9.0 km (5.6 mi), shallow
Epicenter
36.519° N, 120.630° 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 0.7 km horizontally, 1.0 km in depth
Magnitude uncertainty
±0.19
Depth from
From location
Station coverage gap
164°
Stations used
27

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 193 in the 60 days after this one and 79 in the 30 days before it.

After

  1. 1.922 km NE of Soledad, California · 13198 days ago · 8 km deep · 45 km away
  2. 2.812 km NE of Coalinga, California · 13197 days ago · 3 km deep · 47 km away
  3. 2.24 km NE of Tres Pinos, California · 13196 days ago · 8 km deep · 68 km away
  4. 1.630 km NE of Soledad, California · 13196 days ago · 8 km deep · 37 km away
  5. 1.810 km NW of Kettleman City, California · 13195 days ago · 8 km deep · 72 km away
  6. 2.022 km NE of Soledad, California · 13195 days ago · 8 km deep · 44 km away
  7. 1.522 km NE of Soledad, California · 13195 days ago · 8 km deep · 44 km away
  8. 2.022 km NE of Soledad, California · 13195 days ago · 8 km deep · 44 km away
  9. 1.55 km WNW of San Juan Bautista, California · 13194 days ago · 6 km deep · 94 km away
  10. 3.11 km ESE of Aromas, California · 13194 days ago · 9 km deep · 98 km away
  11. 2.313 km SW of Huron, California · 13194 days ago · 3 km deep · 58 km away
  12. 1.922 km NE of Soledad, California · 13194 days ago · 2 km deep · 44 km away
  13. 2.94 km SE of Aromas, California · 13194 days ago · 7 km deep · 94 km away
  14. 1.812 km SE of Tres Pinos, California · 13194 days ago · 2 km deep · 57 km away
  15. 1.722 km NE of Soledad, California · 13193 days ago · 8 km deep · 44 km away
  16. 2.7Central California · 13193 days ago · 8 km deep · 44 km away
  17. 2.38 km W of Volta, California · 13193 days ago · 1 km deep · 73 km away
  18. 1.6Central California · 13193 days ago · 10 km deep · 50 km away
  19. 1.612 km NW of Avenal, California · 13193 days ago · 16 km deep · 60 km away
  20. 1.54 km WSW of Ridgemark, California · 13192 days ago · 5 km deep · 77 km away
  21. 1.95 km WNW of San Juan Bautista, California · 13192 days ago · 7 km deep · 94 km away
  22. 2.820km SSE of King City, CA · 13192 days ago · 5 km deep · 65 km away
  23. 1.924 km ENE of Greenfield, California · 13192 days ago · 5 km deep · 35 km away
  24. 1.917 km SSE of Tres Pinos, California · 13190 days ago · 5 km deep · 58 km away
  25. 1.731 km SSW of Los Banos, California · 13190 days ago · 1 km deep · 42 km away
  26. 3.512 km S of Tres Pinos, CA · 13189 days ago · 5 km deep · 63 km away
  27. 1.615 km NW of Parkfield, California · 13189 days ago · 3 km deep · 58 km away
  28. 3.012 km S of Tres Pinos, California · 13189 days ago · 5 km deep · 63 km away
  29. 2.59 km S of Tres Pinos, California · 13189 days ago · 3 km deep · 66 km away
  30. 2.324 km NE of Soledad, California · 13189 days ago · 1 km deep · 42 km away
  31. 1.51 km ESE of Aromas, California · 13189 days ago · 8 km deep · 98 km away
  32. 2.423 km ENE of Soledad, California · 13189 days ago · 4 km deep · 40 km away
  33. 2.5Central California · 13189 days ago · 2 km deep · 50 km away
  34. 2.12 km SW of Huron, California · 13189 days ago · 7 km deep · 59 km away
  35. 2.01 km ESE of Aromas, California · 13189 days ago · 8 km deep · 98 km away
  36. 2.4Central California · 13188 days ago · 9 km deep · 52 km away
  37. 1.61 km NE of Aromas, California · 13188 days ago · 5 km deep · 99 km away
  38. 2.49 km S of Tres Pinos, California · 13187 days ago · 2 km deep · 66 km away
  39. 2.022 km NE of Soledad, California · 13187 days ago · 8 km deep · 44 km away
  40. 1.56 km N of Tres Pinos, California · 13187 days ago · 6 km deep · 71 km away
  41. 2.511 km S of Tres Pinos, California · 13186 days ago · 4 km deep · 64 km away
  42. 2.22 km SE of San Ardo, California · 13185 days ago · 10 km deep · 62 km away
  43. 1.815 km NW of Parkfield, California · 13185 days ago · 3 km deep · 59 km away
  44. 3.012 km S of Tres Pinos, California · 13185 days ago · 5 km deep · 63 km away
  45. 2.412 km S of Tres Pinos, California · 13185 days ago · 5 km deep · 63 km away
  46. 2.612 km S of Tres Pinos, California · 13183 days ago · 5 km deep · 63 km away
  47. 1.56 km NE of Ridgemark, California · 13183 days ago · 7 km deep · 71 km away
  48. 1.912 km S of Tres Pinos, California · 13183 days ago · 5 km deep · 63 km away
  49. 1.912 km S of Tres Pinos, California · 13183 days ago · 5 km deep · 63 km away
  50. 1.612 km S of Tres Pinos, California · 13183 days ago · 5 km deep · 63 km away
  51. 2.26 km NE of Ridgemark, California · 13183 days ago · 6 km deep · 71 km away
  52. 2.9Central California · 13183 days ago · 9 km deep · 83 km away
  53. 1.719 km NW of Parkfield, California · 13183 days ago · 1 km deep · 55 km away
  54. 3.513 km S of Tres Pinos, California · 13182 days ago · 6 km deep · 61 km away
  55. 2.813 km S of Tres Pinos, California · 13182 days ago · 6 km deep · 62 km away
  56. 1.913 km S of Tres Pinos, California · 13182 days ago · 3 km deep · 62 km away
  57. 3.313 km SSE of Tres Pinos, California · 13181 days ago · 6 km deep · 61 km away
  58. 2.314 km SSE of Tres Pinos, California · 13181 days ago · 5 km deep · 61 km away
  59. 1.714 km SSE of Tres Pinos, California · 13181 days ago · 5 km deep · 61 km away
  60. 1.819 km WSW of Volta, California · 13181 days ago · 1 km deep · 73 km away

The first 60 of 193.

Before

  1. 2.011 km NNW of Coalinga, California · 13199 days ago · 9 km deep · 37 km away
  2. 1.87 km NE of Gilroy, California · 13200 days ago · 3 km deep · 97 km away
  3. 1.74 km WNW of Parkfield, California · 13202 days ago · 5 km deep · 68 km away
  4. 2.14 km NW of Parkfield, California · 13202 days ago · 5 km deep · 68 km away
  5. 1.96 km NNE of Coalinga, California · 13202 days ago · 14 km deep · 45 km away
  6. 2.330 km ESE of Tres Pinos, California · 13203 days ago · 4 km deep · 40 km away
  7. 1.73 km S of San Juan Bautista, California · 13203 days ago · 4 km deep · 87 km away
  8. 2.9Central California · 13203 days ago · 4 km deep · 87 km away
  9. 2.12 km S of San Juan Bautista, California · 13203 days ago · 4 km deep · 87 km away
  10. 2.224 km NE of Greenfield, California · 13204 days ago · 6 km deep · 38 km away
  11. 1.821 km NE of Soledad, California · 13204 days ago · 5 km deep · 49 km away
  12. 2.221 km NE of Soledad, California · 13205 days ago · 6 km deep · 50 km away
  13. 2.65 km ESE of Aromas, California · 13205 days ago · 6 km deep · 94 km away
  14. 1.822 km ENE of Soledad, California · 13205 days ago · 8 km deep · 42 km away
  15. 1.723 km ENE of King City, California · 13206 days ago · 4 km deep · 32 km away
  16. 1.61 km SSE of Parkfield, California · 13206 days ago · 9 km deep · 73 km away
  17. 1.717km WSW of Corcoran, CA · 13206 days ago · 5 km deep · 99 km away
  18. 2.16 km NE of Ridgemark, California · 13207 days ago · 6 km deep · 72 km away
  19. 3.66 km NE of Ridgemark, California · 13207 days ago · 7 km deep · 72 km away
  20. 2.411 km S of Tres Pinos, California · 13207 days ago · 5 km deep · 63 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc162755. Read Sun, Oct 4, 2026, 10:52 PM UTC.