California earthquakes

M1.5 earthquake 23 km NE of San Ardo, California

A magnitude 1.5 earthquake struck 23 km NE of San Ardo, California on Thu, Oct 27, 1983, 2:11 AM PDT (09:11 UTC), 3 km (2 mi) below the surface.

A larger quake followed: M4.3 12 km NW of Avenal, California. This one was a foreshock.

San Ardo 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
1.5 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
1983-10-27 09:11:19 UTC
Depth
2.6 km (1.6 mi), shallow
Epicenter
36.192° N, 120.760° 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 0.4 km horizontally, 1.0 km in depth
Magnitude uncertainty
±0.16
Depth from
From location
Station coverage gap
74°
Stations used
11

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 164 in the 30 days before it.

After

  1. 1.625 km ENE of Greenfield, California · 15680 days ago · 2 km deep · 35 km away
  2. 2.213 km S of Tres Pinos, California · 15679 days ago · 2 km deep · 72 km away
  3. 1.910 km NNE of Coalinga, California · 15679 days ago · 7 km deep · 42 km away
  4. 1.510 km N of Coalinga, California · 15678 days ago · 10 km deep · 36 km away
  5. 1.913 km NNE of Coalinga, California · 15677 days ago · 7 km deep · 42 km away
  6. 2.412 km NE of Coalinga, California · 15677 days ago · 6 km deep · 46 km away
  7. 1.716 km NNW of Coalinga, California · 15677 days ago · 4 km deep · 29 km away
  8. 2.722 km W of Alpaugh, California · 15677 days ago · 4 km deep · 98 km away
  9. 2.521 km NE of Soledad, California · 15677 days ago · 5 km deep · 57 km away
  10. 3.214 km NNW of Coalinga, California · 15677 days ago · 9 km deep · 34 km away
  11. 1.529 km ENE of Soledad, California · 15677 days ago · 8 km deep · 45 km away
  12. 1.66 km NNE of Coalinga, California · 15676 days ago · 8 km deep · 39 km away
  13. 2.38 km NNE of Coalinga, California · 15676 days ago · 9 km deep · 40 km away
  14. 2.57 km NNE of Coalinga, California · 15676 days ago · 9 km deep · 40 km away
  15. 1.619 km N of Coalinga, California · 15676 days ago · 10 km deep · 37 km away
  16. 1.730 km ENE of Soledad, California · 15676 days ago · 8 km deep · 50 km away
  17. 1.720 km S of Three Rocks, California · 15676 days ago · 10 km deep · 38 km away
  18. 1.826 km NW of Coalinga, California · 15676 days ago · 3 km deep · 18 km away
  19. 1.612 km ESE of Coalinga, California · 15674 days ago · 7 km deep · 49 km away
  20. 1.99 km S of San Simeon, California · 15673 days ago · 6 km deep · 81 km away
  21. 1.611 km N of Coalinga, California · 15673 days ago · 9 km deep · 38 km away
  22. 2.811 km N of Coalinga, California · 15672 days ago · 9 km deep · 38 km away
  23. 1.513 km N of Coalinga, California · 15672 days ago · 9 km deep · 38 km away
  24. 1.711 km WNW of Huron, California · 15672 days ago · 3 km deep · 48 km away
  25. 2.28 km N of Coalinga, California · 15672 days ago · 10 km deep · 37 km away
  26. 2.313 km N of Coalinga, California · 15672 days ago · 12 km deep · 38 km away
  27. 1.712 km E of Coalinga, California · 15672 days ago · 6 km deep · 49 km away
  28. 2.211 km N of Coalinga, California · 15671 days ago · 8 km deep · 38 km away
  29. 2.016 km NNW of Coalinga, California · 15671 days ago · 6 km deep · 31 km away
  30. 1.611 km WSW of Huron, California · 15671 days ago · 11 km deep · 49 km away
  31. 2.813 km ESE of Coalinga, California · 15671 days ago · 7 km deep · 49 km away
  32. 1.79 km NW of Huron, California · 15670 days ago · 6 km deep · 52 km away
  33. 2.424 km NE of Greenfield, California · 15670 days ago · 7 km deep · 41 km away
  34. 1.711 km ENE of Coalinga, California · 15670 days ago · 10 km deep · 45 km away
  35. 1.65 km SSE of San Juan Bautista, California · 15670 days ago · 5 km deep · 95 km away
  36. 2.85 km SSE of San Juan Bautista, California · 15670 days ago · 5 km deep · 95 km away
  37. 3.217 km SE of Kettleman City, California · 15670 days ago · 34 km deep · 90 km away
  38. 1.716 km NNW of Coalinga, California · 15670 days ago · 7 km deep · 32 km away
  39. 1.722 km NNW of San Simeon, California · 15669 days ago · 5 km deep · 64 km away
  40. 1.913 km NE of Coalinga, California · 15669 days ago · 5 km deep · 46 km away
  41. 2.126 km NW of San Simeon, California · 15668 days ago · 7 km deep · 72 km away
  42. 3.219 km S of Kettleman City, California · 15668 days ago · 29 km deep · 82 km away
  43. 1.98 km ENE of Coalinga, California · 15668 days ago · 7 km deep · 43 km away
  44. 1.723 km WSW of Three Rocks, California · 15668 days ago · 12 km deep · 31 km away
  45. 2.330 km WNW of San Simeon, California · 15668 days ago · 2 km deep · 80 km away
  46. 2.411 km E of Coalinga, California · 15668 days ago · 5 km deep · 47 km away
  47. 1.816 km NNW of Coalinga, California · 15667 days ago · 7 km deep · 33 km away
  48. 1.716 km NNW of Coalinga, California · 15667 days ago · 6 km deep · 32 km away
  49. 1.913 km NE of Coalinga, California · 15667 days ago · 5 km deep · 44 km away
  50. 1.612 km ESE of Coalinga, California · 15667 days ago · 7 km deep · 49 km away
  51. 1.817 km NNW of Coalinga, California · 15666 days ago · 8 km deep · 32 km away
  52. 1.721 km SSW of Three Rocks, California · 15666 days ago · 9 km deep · 28 km away
  53. 1.910 km ENE of Coalinga, California · 15666 days ago · 10 km deep · 45 km away
  54. 2.611 km NNW of Coalinga, California · 15666 days ago · 11 km deep · 33 km away
  55. 1.811 km ENE of Coalinga, California · 15666 days ago · 5 km deep · 45 km away
  56. 2.623 km NE of San Lucas, California · 15666 days ago · 10 km deep · 14 km away
  57. 2.014 km N of Coalinga, California · 15665 days ago · 7 km deep · 37 km away
  58. 2.29 km SSW of Tres Pinos, California · 15665 days ago · 3 km deep · 78 km away
  59. 1.818 km S of Cantua Creek, California · 15665 days ago · 13 km deep · 43 km away
  60. 1.925 km NW of San Simeon, California · 15665 days ago · 5 km deep · 70 km away

The first 60 of 193.

Before

  1. 2.222 km NW of San Simeon, California · 15680 days ago · 9 km deep · 72 km away
  2. 2.08 km SW of Ridgemark, California · 15680 days ago · 7 km deep · 86 km away
  3. 2.021 km WNW of Lost Hills, California · 15680 days ago · 3 km deep · 95 km away
  4. 3.110 km NNW of Coalinga, California · 15680 days ago · 7 km deep · 31 km away
  5. 2.022 km ENE of San Ardo, California · 15680 days ago · 5 km deep · 10 km away
  6. 1.931 km ENE of Soledad, California · 15681 days ago · 8 km deep · 50 km away
  7. 1.616 km N of Coalinga, California · 15681 days ago · 9 km deep · 36 km away
  8. 2.227 km NW of San Simeon, California · 15681 days ago · 7 km deep · 69 km away
  9. 1.919 km NNW of Coalinga, California · 15681 days ago · 9 km deep · 28 km away
  10. 2.015 km NNE of Coalinga, California · 15681 days ago · 10 km deep · 41 km away
  11. 2.414 km NNE of Coalinga, California · 15682 days ago · 6 km deep · 42 km away
  12. 2.723 km ENE of Soledad, California · 15682 days ago · 5 km deep · 47 km away
  13. 1.822 km NE of Soledad, California · 15682 days ago · 8 km deep · 53 km away
  14. 1.612 km NNE of Coalinga, California · 15682 days ago · 3 km deep · 42 km away
  15. 1.931 km ENE of Soledad, California · 15683 days ago · 7 km deep · 49 km away
  16. 2.113 km NNW of Coalinga, California · 15683 days ago · 8 km deep · 34 km away
  17. 1.78 km NNW of Coalinga, California · 15683 days ago · 7 km deep · 33 km away
  18. 2.012 km N of Coalinga, California · 15683 days ago · 8 km deep · 36 km away
  19. 1.88 km WSW of Morro Bay, California · 15684 days ago · 0 km deep · 97 km away
  20. 2.610 km NNE of Coalinga, California · 15684 days ago · 7 km deep · 42 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1105708. Read Thu, Oct 1, 2026, 8:05 AM UTC.