California earthquakes

M1.7 earthquake 18 km S of Three Rocks, California

A magnitude 1.7 earthquake struck 18 km S of Three Rocks, California on Sun, Sep 23, 1984, 6:46 AM PDT (13:46 UTC), 13 km (8 mi) below the surface.

A larger quake followed: M4.0 21 km NE of Soledad, 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
1.7 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
1984-09-23 13:46:20 UTC
Depth
13.4 km (8.3 mi), shallow
Epicenter
36.335° N, 120.363° 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 0.9 km horizontally, 0.9 km in depth
Magnitude uncertainty
±0.10
Depth from
From location
Station coverage gap
123°
Stations used
9

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 153 in the 60 days after this one and 94 in the 30 days before it.

After

  1. 1.910 km ENE of Coalinga, California · 15349 days ago · 4 km deep · 21 km away
  2. 2.012 km SW of Soledad, California · 15349 days ago · 10 km deep · 95 km away
  3. 1.65 km NW of Parkfield, California · 15348 days ago · 5 km deep · 46 km away
  4. 2.520 km NNE of Coalinga, California · 15347 days ago · 7 km deep · 7 km away
  5. 1.512 km SW of Huron, California · 15347 days ago · 5 km deep · 28 km away
  6. 1.914 km N of Coalinga, California · 15347 days ago · 8 km deep · 8 km away
  7. 1.6Central California · 15346 days ago · 12 km deep · 14 km away
  8. 1.823 km ENE of Soledad, California · 15346 days ago · 5 km deep · 67 km away
  9. 1.78 km NE of Coalinga, California · 15346 days ago · 9 km deep · 17 km away
  10. 2.110 km W of Huron, California · 15346 days ago · 6 km deep · 19 km away
  11. 2.09 km NE of Coalinga, California · 15346 days ago · 8 km deep · 17 km away
  12. 2.315 km SSE of Tres Pinos, California · 15346 days ago · 10 km deep · 89 km away
  13. 1.725 km NE of Greenfield, California · 15346 days ago · 1 km deep · 59 km away
  14. 1.65 km W of Avenal, California · 15344 days ago · 14 km deep · 40 km away
  15. 2.54 km WSW of Avenal, California · 15344 days ago · 13 km deep · 41 km away
  16. 1.93 km WSW of Avenal, California · 15344 days ago · 15 km deep · 42 km away
  17. 3.44 km WSW of Avenal, California · 15344 days ago · 17 km deep · 41 km away
  18. 1.618 km ESE of Tres Pinos, California · 15344 days ago · 5 km deep · 81 km away
  19. 2.112 km NW of Avenal, California · 15343 days ago · 2 km deep · 30 km away
  20. 1.622 km NW of Parkfield, California · 15342 days ago · 1 km deep · 39 km away
  21. 2.415 km NNW of Coalinga, California · 15341 days ago · 10 km deep · 10 km away
  22. 2.711 km N of Coalinga, California · 15340 days ago · 9 km deep · 10 km away
  23. 1.511 km N of Coalinga, California · 15340 days ago · 7 km deep · 11 km away
  24. 1.810 km S of Huron, California · 15340 days ago · 7 km deep · 35 km away
  25. 1.616 km NW of Parkfield, California · 15340 days ago · 4 km deep · 41 km away
  26. 1.622 km NE of Soledad, California · 15338 days ago · 2 km deep · 71 km away
  27. 1.611 km NNW of Coalinga, California · 15338 days ago · 7 km deep · 11 km away
  28. 1.88 km SSW of Tres Pinos, California · 15338 days ago · 3 km deep · 98 km away
  29. 1.617 km ESE of Tres Pinos, California · 15338 days ago · 0 km deep · 82 km away
  30. 2.024 km ENE of Soledad, California · 15337 days ago · 2 km deep · 66 km away
  31. 4.021 km NE of Soledad, California · 15337 days ago · 8 km deep · 78 km away
  32. 2.337 km SSW of South Dos Palos, California · 15337 days ago · 6 km deep · 58 km away
  33. 1.514 km NW of Parkfield, California · 15337 days ago · 5 km deep · 41 km away
  34. 2.329 km NE of Soledad, California · 15336 days ago · 5 km deep · 68 km away
  35. 1.513 km N of Coalinga, California · 15336 days ago · 8 km deep · 8 km away
  36. 1.723 km ENE of San Lucas, California · 15336 days ago · 7 km deep · 40 km away
  37. 1.713 km SW of Soledad, California · 15336 days ago · 12 km deep · 96 km away
  38. 1.711 km N of Coalinga, California · 15335 days ago · 7 km deep · 10 km away
  39. 2.619 km ENE of Gonzales, California · 15335 days ago · 6 km deep · 85 km away
  40. 1.816 km NNE of Coalinga, California · 15334 days ago · 9 km deep · 8 km away
  41. 2.518 km N of Coalinga, California · 15334 days ago · 11 km deep · 4 km away
  42. 1.517 km NW of Parkfield, California · 15334 days ago · 5 km deep · 40 km away
  43. 1.617 km N of Coalinga, California · 15333 days ago · 9 km deep · 5 km away
  44. 1.621 km NE of Soledad, California · 15332 days ago · 6 km deep · 77 km away
  45. 2.512 km NNE of Coalinga, California · 15332 days ago · 5 km deep · 10 km away
  46. 1.921 km NE of Soledad, California · 15332 days ago · 7 km deep · 77 km away
  47. 2.011 km NNW of Coalinga, California · 15332 days ago · 7 km deep · 11 km away
  48. 1.8Central California · 15331 days ago · 9 km deep · 6 km away
  49. 1.62 km ESE of Tres Pinos, California · 15331 days ago · 7 km deep · 97 km away
  50. 2.07 km SSW of Huron, California · 15330 days ago · 5 km deep · 30 km away
  51. 1.618 km N of Coalinga, California · 15330 days ago · 16 km deep · 4 km away
  52. 2.023 km NE of San Ardo, California · 15330 days ago · 7 km deep · 38 km away
  53. 2.223 km NE of San Ardo, California · 15330 days ago · 7 km deep · 38 km away
  54. 2.423 km ENE of San Lucas, California · 15330 days ago · 8 km deep · 40 km away
  55. 2.121 km SSE of Tres Pinos, California · 15330 days ago · 5 km deep · 83 km away
  56. 1.821 km SSE of Tres Pinos, California · 15330 days ago · 5 km deep · 83 km away
  57. 1.924 km ENE of Greenfield, California · 15328 days ago · 6 km deep · 59 km away
  58. 3.14 km W of Avenal, California · 15328 days ago · 16 km deep · 41 km away
  59. 2.83 km SSW of Avenal, California · 15328 days ago · 12 km deep · 45 km away
  60. 2.318 km ENE of Shandon, California · 15328 days ago · 44 km deep · 69 km away

The first 60 of 153.

Before

  1. 1.737 km ESE of Tres Pinos, California · 15350 days ago · 5 km deep · 62 km away
  2. 1.519 km NNW of Coalinga, California · 15350 days ago · 8 km deep · 6 km away
  3. 1.521 km NE of Soledad, California · 15350 days ago · 7 km deep · 75 km away
  4. 2.00 km SSE of Gonzales, California · 15350 days ago · 9 km deep · 98 km away
  5. 1.57 km NNE of Coalinga, California · 15350 days ago · 11 km deep · 15 km away
  6. 2.88 km NNE of Coalinga, California · 15350 days ago · 10 km deep · 14 km away
  7. 3.18 km NNE of Coalinga, California · 15350 days ago · 10 km deep · 15 km away
  8. 1.711 km NNE of Avenal, California · 15350 days ago · 8 km deep · 38 km away
  9. 1.813 km NNE of Coalinga, California · 15352 days ago · 8 km deep · 10 km away
  10. 1.810 km NE of Coalinga, California · 15352 days ago · 8 km deep · 15 km away
  11. 1.523 km NNE of San Lucas, California · 15352 days ago · 4 km deep · 47 km away
  12. 1.618 km NW of Parkfield, California · 15352 days ago · 5 km deep · 40 km away
  13. 1.611 km SW of Huron, California · 15352 days ago · 8 km deep · 26 km away
  14. 1.88 km SSW of Huron, California · 15352 days ago · 15 km deep · 30 km away
  15. 1.612 km SW of Huron, California · 15352 days ago · 6 km deep · 29 km away
  16. 1.86 km NE of Coalinga, California · 15353 days ago · 4 km deep · 19 km away
  17. 2.210 km E of Coalinga, California · 15353 days ago · 5 km deep · 24 km away
  18. 2.017 km SSE of Tres Pinos, California · 15353 days ago · 4 km deep · 87 km away
  19. 1.521 km SSW of Three Rocks, California · 15353 days ago · 10 km deep · 13 km away
  20. 1.813 km W of Oak Shores, California · 15353 days ago · 5 km deep · 92 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc28515. Read Fri, Oct 2, 2026, 10:41 PM UTC.