California earthquakes

M2.8 earthquake 30 km WSW of Three Rocks, California

A magnitude 2.8 earthquake struck 30 km WSW of Three Rocks, California on Sun, Oct 17, 1976, 8:49 PM PDT (03:49 UTC), 15 km (9 mi) below the surface.

A larger quake followed: M4.6 20 km SSE 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
2.8 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
1976-10-18 03:49:29 UTC
Depth
14.6 km (9.1 mi), shallow
Epicenter
36.400° N, 120.711° 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 0.3 km horizontally, 0.5 km in depth
Magnitude uncertainty
±0.57
Depth from
From location
Station coverage gap
154°
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: 186 in the 60 days after this one and 79 in the 30 days before it.

After

  1. 1.719 km NW of Parkfield, California · 18246 days ago · 4 km deep · 43 km away
  2. 3.7Central California · 18245 days ago · 6 km deep · 89 km away
  3. 2.82 km SSW of San Juan Bautista, California · 18245 days ago · 6 km deep · 89 km away
  4. 2.623 km ENE of Soledad, California · 18245 days ago · 4 km deep · 34 km away
  5. 2.320 km NE of Soledad, California · 18245 days ago · 7 km deep · 43 km away
  6. 1.8Central California · 18245 days ago · 4 km deep · 36 km away
  7. 1.9Central California · 18245 days ago · 6 km deep · 71 km away
  8. 3.828 km SW of South Dos Palos, California · 18245 days ago · 5 km deep · 45 km away
  9. 2.416 km SSE of Tres Pinos, California · 18245 days ago · 5 km deep · 57 km away
  10. 1.916 km SSE of Tres Pinos, California · 18245 days ago · 5 km deep · 57 km away
  11. 2.115 km SSE of Tres Pinos, California · 18245 days ago · 6 km deep · 57 km away
  12. 2.522 km NW of Parkfield, California · 18244 days ago · 8 km deep · 41 km away
  13. 1.722 km NW of Parkfield, California · 18244 days ago · 9 km deep · 41 km away
  14. 1.66 km SSW of Gonzales, California · 18244 days ago · 14 km deep · 68 km away
  15. 2.28 km NW of Hollister, California · 18243 days ago · 6 km deep · 88 km away
  16. 2.210 km SSE of Tres Pinos, California · 18243 days ago · 5 km deep · 62 km away
  17. 2.624 km NNE of San Lucas, California · 18243 days ago · 8 km deep · 18 km away
  18. 2.623 km NE of San Lucas, California · 18243 days ago · 7 km deep · 18 km away
  19. 2.68 km SSW of Tres Pinos, California · 18242 days ago · 2 km deep · 69 km away
  20. 2.221 km NE of Soledad, California · 18242 days ago · 3 km deep · 42 km away
  21. 1.619 km SSE of Tres Pinos, California · 18241 days ago · 5 km deep · 52 km away
  22. 2.76km SSE of Biola, CA · 18241 days ago · 6 km deep · 76 km away
  23. 3.58 km NW of Hollister, California · 18241 days ago · 7 km deep · 88 km away
  24. 3.83 km SE of Aromas, California · 18240 days ago · 8 km deep · 95 km away
  25. 2.34 km SE of Aromas, California · 18240 days ago · 7 km deep · 95 km away
  26. 2.322 km NNE of Soledad, California · 18240 days ago · 4 km deep · 48 km away
  27. 1.99 km NE of San Juan Bautista, California · 18240 days ago · 7 km deep · 89 km away
  28. 2.225 km WSW of Coalinga, California · 18240 days ago · 2 km deep · 38 km away
  29. 2.624 km E of San Ardo, California · 18240 days ago · -1 km deep · 38 km away
  30. 3.134 km WSW of Three Rocks, California · 18240 days ago · 12 km deep · 5 km away
  31. 1.96 km SE of Tres Pinos, California · 18239 days ago · 10 km deep · 63 km away
  32. 2.010 km NW of Hollister, California · 18239 days ago · 3 km deep · 90 km away
  33. 2.014 km NW of Parkfield, California · 18239 days ago · 4 km deep · 48 km away
  34. 1.86 km NE of Ridgemark, California · 18238 days ago · 4 km deep · 74 km away
  35. 2.526 km SE of Tres Pinos, California · 18238 days ago · 5 km deep · 43 km away
  36. 1.76 km NE of Ridgemark, California · 18238 days ago · 3 km deep · 74 km away
  37. 2.524 km ENE of Soledad, California · 18238 days ago · 3 km deep · 34 km away
  38. 2.222 km NNE of San Ardo, California · 18237 days ago · 5 km deep · 24 km away
  39. 1.89 km NW of Hollister, California · 18237 days ago · 6 km deep · 89 km away
  40. 2.715 km N of San Simeon, California · 18236 days ago · 11 km deep · 83 km away
  41. 2.922 km ENE of Soledad, California · 18236 days ago · 3 km deep · 39 km away
  42. 3.124 km NE of Greenfield, California · 18236 days ago · 3 km deep · 31 km away
  43. 1.819 km NW of Parkfield, California · 18236 days ago · 4 km deep · 44 km away
  44. 1.9Central California · 18235 days ago · 8 km deep · 56 km away
  45. 1.924 km NE of Greenfield, California · 18235 days ago · 7 km deep · 31 km away
  46. 1.99 km NW of Hollister, California · 18234 days ago · 5 km deep · 89 km away
  47. 2.221 km NE of Soledad, California · 18234 days ago · 3 km deep · 44 km away
  48. 2.517 km NW of Parkfield, California · 18234 days ago · 3 km deep · 45 km away
  49. 2.821 km NW of Parkfield, California · 18233 days ago · 0 km deep · 42 km away
  50. 1.934 km NE of King City, California · 18233 days ago · 17 km deep · 10 km away
  51. 2.76km N of Avenal, CA · 18233 days ago · 6 km deep · 65 km away
  52. 2.49 km NE of San Juan Bautista, California · 18232 days ago · 6 km deep · 89 km away
  53. 2.521 km NE of Soledad, California · 18231 days ago · 6 km deep · 43 km away
  54. 1.814 km NW of Parkfield, California · 18231 days ago · 6 km deep · 48 km away
  55. 2.03 km ENE of Tres Pinos, California · 18230 days ago · 11 km deep · 68 km away
  56. 2.523 km NNE of San Lucas, California · 18230 days ago · 5 km deep · 19 km away
  57. 2.110 km NNW of Hollister, California · 18230 days ago · 3 km deep · 89 km away
  58. 2.921 km NE of Soledad, California · 18229 days ago · 9 km deep · 42 km away
  59. 3.83 km W of San Juan Bautista, California · 18229 days ago · 6 km deep · 92 km away
  60. 2.323 km ENE of Soledad, California · 18228 days ago · 2 km deep · 34 km away

The first 60 of 186.

Before

  1. 3.32 km SW of San Juan Bautista, California · 18246 days ago · 4 km deep · 90 km away
  2. 2.216 km NW of Parkfield, California · 18249 days ago · 5 km deep · 46 km away
  3. 2.421 km NE of Soledad, California · 18249 days ago · 3 km deep · 44 km away
  4. 1.87 km NE of San Juan Bautista, California · 18249 days ago · 4 km deep · 88 km away
  5. 2.314 km SSE of Tres Pinos, California · 18250 days ago · 4 km deep · 59 km away
  6. 2.621 km NW of Parkfield, California · 18250 days ago · 4 km deep · 41 km away
  7. 1.88 km NE of San Juan Bautista, California · 18250 days ago · 6 km deep · 88 km away
  8. 2.323 km NE of King City, California · 18250 days ago · 3 km deep · 20 km away
  9. 3.321 km NE of Soledad, California · 18250 days ago · 4 km deep · 46 km away
  10. 2.523 km NE of Greenfield, California · 18251 days ago · 7 km deep · 31 km away
  11. 2.825 km ENE of Greenfield, California · 18252 days ago · 1 km deep · 26 km away
  12. 1.623 km NE of Soledad, California · 18253 days ago · 7 km deep · 41 km away
  13. 2.323 km NE of Greenfield, California · 18253 days ago · 4 km deep · 30 km away
  14. 2.315 km NW of Parkfield, California · 18254 days ago · 4 km deep · 47 km away
  15. 3.217 km SSE of Tres Pinos, California · 18254 days ago · 5 km deep · 56 km away
  16. 1.54 km NW of Parkfield, California · 18254 days ago · 4 km deep · 57 km away
  17. 2.424 km NE of Greenfield, California · 18254 days ago · 1 km deep · 29 km away
  18. 1.7Central California · 18254 days ago · 7 km deep · 68 km away
  19. 2.424 km NE of Greenfield, California · 18254 days ago · 1 km deep · 30 km away
  20. 2.79 km S of Tres Pinos, California · 18255 days ago · 2 km deep · 65 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1031931. Read Fri, Oct 2, 2026, 9:34 AM UTC.