California earthquakes

M3.3 earthquake 7 km W of Three Rocks, California

A magnitude 3.3 earthquake struck 7 km W of Three Rocks, California on Mon, Mar 28, 1977, 4:06 PM PST (00:06 UTC), 6 km (4 mi) below the surface.

A larger quake followed: M3.5 15 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
3.3 (Md, duration), minor
Magnitude from
Northern California Seismic System
Local time
UTC
1977-03-29 00:06:48 UTC
Depth
5.7 km (3.6 mi), shallow
Epicenter
36.508° N, 120.474° 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, 1.7 km in depth
Magnitude uncertainty
±0.32
Depth from
From location
Station coverage gap
106°
Stations used
30

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 149 in the 60 days after this one and 122 in the 30 days before it.

After

  1. 2.326 km ENE of Greenfield, California · 18085 days ago · 9 km deep · 46 km away
  2. 2.323 km NE of King City, California · 18085 days ago · 3 km deep · 45 km away
  3. 1.623 km ESE of Tres Pinos, California · 18085 days ago · 1 km deep · 58 km away
  4. 1.524 km ENE of Greenfield, California · 18084 days ago · 1 km deep · 49 km away
  5. 1.610 km NNW of Hollister, California · 18083 days ago · 0 km deep · 99 km away
  6. 2.123 km ESE of Tres Pinos, California · 18083 days ago · 0 km deep · 59 km away
  7. 2.524 km NE of Greenfield, California · 18083 days ago · 2 km deep · 53 km away
  8. 1.516 km NW of Parkfield, California · 18083 days ago · 1 km deep · 58 km away
  9. 2.223 km SE of Tres Pinos, California · 18083 days ago · 8 km deep · 61 km away
  10. 2.025 km ENE of Soledad, California · 18083 days ago · 9 km deep · 54 km away
  11. 2.225 km ENE of Soledad, California · 18083 days ago · 9 km deep · 54 km away
  12. 1.819 km SSE of Tres Pinos, California · 18083 days ago · 10 km deep · 70 km away
  13. 1.79 km NW of Hollister, California · 18083 days ago · 4 km deep · 99 km away
  14. 1.924 km ENE of Greenfield, California · 18083 days ago · 4 km deep · 47 km away
  15. 2.018 km WNW of Coalinga, California · 18082 days ago · 5 km deep · 36 km away
  16. 1.623 km NE of Greenfield, California · 18082 days ago · 5 km deep · 51 km away
  17. 1.910 km SE of Parkfield, California · 18082 days ago · 6 km deep · 77 km away
  18. 1.53 km SSW of Ridgemark, California · 18081 days ago · 7 km deep · 86 km away
  19. 1.914 km SE of Parkfield, California · 18081 days ago · 8 km deep · 80 km away
  20. 1.823 km NW of Parkfield, California · 18081 days ago · 6 km deep · 52 km away
  21. 2.523 km NW of Parkfield, California · 18081 days ago · 6 km deep · 52 km away
  22. 2.622 km ENE of San Ardo, California · 18080 days ago · 3 km deep · 48 km away
  23. 2.25 km SE of Tres Pinos, California · 18080 days ago · 8 km deep · 77 km away
  24. 2.3Central California · 18080 days ago · 5 km deep · 53 km away
  25. 1.69 km NNW of Hollister, California · 18080 days ago · 3 km deep · 99 km away
  26. 2.210 km NNW of Hollister, California · 18080 days ago · 3 km deep · 100 km away
  27. 3.123 km ENE of Soledad, California · 18080 days ago · 3 km deep · 54 km away
  28. 1.715 km ENE of Hollister, California · 18080 days ago · 8 km deep · 83 km away
  29. 1.621 km ESE of Tres Pinos, California · 18079 days ago · 0 km deep · 60 km away
  30. 1.719 km ESE of Tres Pinos, California · 18079 days ago · 0 km deep · 63 km away
  31. 1.717 km SSE of Tres Pinos, California · 18079 days ago · 5 km deep · 72 km away
  32. 2.024 km ENE of Soledad, California · 18079 days ago · 6 km deep · 53 km away
  33. 1.722 km NE of Soledad, California · 18079 days ago · 9 km deep · 60 km away
  34. 2.824 km NE of Greenfield, California · 18079 days ago · 4 km deep · 52 km away
  35. 2.225 km NE of Soledad, California · 18079 days ago · 7 km deep · 58 km away
  36. 1.825 km NE of Soledad, California · 18079 days ago · 7 km deep · 58 km away
  37. 1.623 km NE of Greenfield, California · 18078 days ago · 8 km deep · 51 km away
  38. 1.811 km NW of Parkfield, California · 18078 days ago · 7 km deep · 59 km away
  39. 2.524 km ENE of Greenfield, California · 18078 days ago · 6 km deep · 48 km away
  40. 2.324 km ENE of Greenfield, California · 18078 days ago · 6 km deep · 48 km away
  41. 2.530 km ENE of Soledad, California · 18078 days ago · 7 km deep · 51 km away
  42. 2.04 km NNW of Avenal, California · 18078 days ago · 9 km deep · 60 km away
  43. 1.728 km ENE of Soledad, California · 18077 days ago · 6 km deep · 53 km away
  44. 2.121 km NE of Soledad, California · 18077 days ago · 6 km deep · 59 km away
  45. 2.25 km SW of Tres Pinos, California · 18076 days ago · 6 km deep · 84 km away
  46. 1.621 km NE of Soledad, California · 18076 days ago · 3 km deep · 61 km away
  47. 2.18 km NE of San Juan Bautista, California · 18075 days ago · 9 km deep · 99 km away
  48. 2.523 km NE of San Ardo, California · 18075 days ago · 8 km deep · 43 km away
  49. 1.85 km WSW of Tres Pinos, California · 18075 days ago · 6 km deep · 85 km away
  50. 2.31 km ESE of Tres Pinos, California · 18074 days ago · 8 km deep · 80 km away
  51. 2.24 km SW of Tres Pinos, California · 18074 days ago · 4 km deep · 84 km away
  52. 1.923 km NE of Greenfield, California · 18073 days ago · 5 km deep · 52 km away
  53. 2.21 km WSW of Tres Pinos, California · 18073 days ago · 6 km deep · 83 km away
  54. 2.310 km NNW of Hollister, California · 18071 days ago · 5 km deep · 100 km away
  55. 1.65 km SE of Tres Pinos, California · 18071 days ago · 7 km deep · 77 km away
  56. 1.511 km NNE of Tres Pinos, California · 18071 days ago · 6 km deep · 82 km away
  57. 2.113 km SSE of Tres Pinos, California · 18071 days ago · 4 km deep · 75 km away
  58. 1.513 km SSE of Tres Pinos, California · 18070 days ago · 5 km deep · 75 km away
  59. 2.330 km ENE of Soledad, California · 18070 days ago · 8 km deep · 51 km away
  60. 2.39 km SSW of Tres Pinos, California · 18070 days ago · 3 km deep · 81 km away

The first 60 of 149.

Before

  1. 1.65 km SSW of Tres Pinos, California · 18085 days ago · 8 km deep · 81 km away
  2. 1.727 km ENE of Soledad, California · 18086 days ago · 5 km deep · 52 km away
  3. 1.822 km NNE of Soledad, California · 18086 days ago · 2 km deep · 66 km away
  4. 1.913 km S of Tres Pinos, California · 18086 days ago · 4 km deep · 76 km away
  5. 3.125 km WNW of Three Rocks, California · 18086 days ago · 3 km deep · 18 km away
  6. 1.913 km S of Tres Pinos, California · 18086 days ago · 4 km deep · 75 km away
  7. 1.613 km S of Tres Pinos, California · 18086 days ago · 4 km deep · 75 km away
  8. 2.822 km NE of San Lucas, California · 18086 days ago · 9 km deep · 42 km away
  9. 2.113 km S of Tres Pinos, California · 18086 days ago · 4 km deep · 75 km away
  10. 1.624 km ENE of Soledad, California · 18087 days ago · 3 km deep · 54 km away
  11. 2.821 km NNE of Soledad, California · 18087 days ago · 8 km deep · 65 km away
  12. 2.423 km ENE of Soledad, California · 18088 days ago · 3 km deep · 55 km away
  13. 1.95 km SSW of Tres Pinos, California · 18088 days ago · 7 km deep · 82 km away
  14. 2.123 km NNE of San Lucas, California · 18088 days ago · 4 km deep · 43 km away
  15. 1.627 km ENE of Soledad, California · 18088 days ago · 5 km deep · 52 km away
  16. 1.59 km NNW of Hollister, California · 18089 days ago · 4 km deep · 99 km away
  17. 1.832 km E of Tres Pinos, California · 18089 days ago · 2 km deep · 51 km away
  18. 1.516 km NW of Parkfield, California · 18089 days ago · 4 km deep · 57 km away
  19. 3.1Central California · 18090 days ago · 5 km deep · 43 km away
  20. 2.327 km SE of Tres Pinos, California · 18090 days ago · 6 km deep · 58 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1034575. Read Fri, Oct 2, 2026, 9:44 PM UTC.