California earthquakes

M1.8 earthquake 19 km SSE of Tres Pinos, California

A magnitude 1.8 earthquake struck 19 km SSE of Tres Pinos, California on Wed, Mar 30, 1977, 5:28 PM PST (01:28 UTC), 10 km (6 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
1.8 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
1977-03-31 01:28:25 UTC
Depth
9.5 km (5.9 mi), shallow
Epicenter
36.628° N, 121.247° 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 0.2 km horizontally, 0.6 km in depth
Magnitude uncertainty
±0.67
Depth from
From location
Station coverage gap
50°
Stations used
24

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 177 in the 60 days after this one and 145 in the 30 days before it.

After

  1. 1.79 km NW of Hollister, California · 18082 days ago · 4 km deep · 38 km away
  2. 1.924 km ENE of Greenfield, California · 18082 days ago · 4 km deep · 33 km away
  3. 2.018 km WNW of Coalinga, California · 18082 days ago · 5 km deep · 79 km away
  4. 1.623 km NE of Greenfield, California · 18082 days ago · 5 km deep · 26 km away
  5. 2.72 km WNW of Cambrian Park, California · 18081 days ago · 9 km deep · 95 km away
  6. 2.32 km SSW of Campbell, California · 18081 days ago · 7 km deep · 95 km away
  7. 2.614 km NNW of San Simeon, California · 18081 days ago · 7 km deep · 97 km away
  8. 1.53 km SSW of Ridgemark, California · 18080 days ago · 7 km deep · 21 km away
  9. 2.04 km SE of Aromas, California · 18080 days ago · 8 km deep · 41 km away
  10. 1.823 km NW of Parkfield, California · 18080 days ago · 6 km deep · 86 km away
  11. 1.89 km E of San Martin, California · 18080 days ago · 7 km deep · 55 km away
  12. 2.04 km SE of Aromas, California · 18080 days ago · 8 km deep · 41 km away
  13. 1.64 km SE of Aromas, California · 18080 days ago · 8 km deep · 41 km away
  14. 3.02 km WNW of Cambrian Park, California · 18080 days ago · 9 km deep · 95 km away
  15. 2.02 km W of Cambrian Park, California · 18080 days ago · 7 km deep · 94 km away
  16. 2.523 km NW of Parkfield, California · 18080 days ago · 6 km deep · 86 km away
  17. 2.622 km ENE of San Ardo, California · 18080 days ago · 3 km deep · 77 km away
  18. 2.25 km SE of Tres Pinos, California · 18080 days ago · 8 km deep · 15 km away
  19. 3.117 km NW of San Simeon, California · 18080 days ago · 9 km deep · 97 km away
  20. 2.3Central California · 18079 days ago · 5 km deep · 19 km away
  21. 1.69 km NNW of Hollister, California · 18079 days ago · 3 km deep · 38 km away
  22. 2.210 km NNW of Hollister, California · 18079 days ago · 3 km deep · 39 km away
  23. 3.123 km ENE of Soledad, California · 18079 days ago · 3 km deep · 20 km away
  24. 1.715 km ENE of Hollister, California · 18079 days ago · 8 km deep · 33 km away
  25. 1.621 km ESE of Tres Pinos, California · 18079 days ago · 0 km deep · 17 km away
  26. 1.719 km ESE of Tres Pinos, California · 18079 days ago · 0 km deep · 16 km away
  27. 1.717 km SSE of Tres Pinos, California · 18079 days ago · 5 km deep · 2 km away
  28. 2.024 km ENE of Soledad, California · 18079 days ago · 6 km deep · 23 km away
  29. 1.722 km NE of Soledad, California · 18079 days ago · 9 km deep · 11 km away
  30. 2.824 km NE of Greenfield, California · 18078 days ago · 4 km deep · 25 km away
  31. 2.225 km NE of Soledad, California · 18078 days ago · 7 km deep · 13 km away
  32. 1.825 km NE of Soledad, California · 18078 days ago · 7 km deep · 13 km away
  33. 1.623 km NE of Greenfield, California · 18078 days ago · 8 km deep · 27 km away
  34. 2.92 km WNW of Cambrian Park, California · 18078 days ago · 8 km deep · 95 km away
  35. 1.811 km NW of Parkfield, California · 18078 days ago · 7 km deep · 97 km away
  36. 2.524 km ENE of Greenfield, California · 18078 days ago · 6 km deep · 33 km away
  37. 2.324 km ENE of Greenfield, California · 18078 days ago · 6 km deep · 33 km away
  38. 2.530 km ENE of Soledad, California · 18077 days ago · 7 km deep · 20 km away
  39. 2.26 km ENE of Interlaken, California · 18077 days ago · 10 km deep · 54 km away
  40. 1.728 km ENE of Soledad, California · 18076 days ago · 6 km deep · 18 km away
  41. 1.82 km WNW of Cambrian Park, California · 18076 days ago · 7 km deep · 95 km away
  42. 2.121 km NE of Soledad, California · 18076 days ago · 6 km deep · 15 km away
  43. 2.117 km NE of San Martin, California · 18076 days ago · 5 km deep · 65 km away
  44. 1.82 km WNW of Cambrian Park, California · 18076 days ago · 8 km deep · 95 km away
  45. 2.25 km SW of Tres Pinos, California · 18076 days ago · 6 km deep · 18 km away
  46. 1.621 km NE of Soledad, California · 18075 days ago · 3 km deep · 11 km away
  47. 1.94 km SSW of Gilroy, California · 18075 days ago · 6 km deep · 48 km away
  48. 2.16 km ENE of Interlaken, California · 18075 days ago · 10 km deep · 53 km away
  49. 1.96 km ENE of Interlaken, California · 18075 days ago · 10 km deep · 53 km away
  50. 2.18 km NE of San Juan Bautista, California · 18075 days ago · 9 km deep · 36 km away
  51. 2.523 km NE of San Ardo, California · 18074 days ago · 8 km deep · 65 km away
  52. 1.85 km WSW of Tres Pinos, California · 18074 days ago · 6 km deep · 19 km away
  53. 2.26 km ENE of Interlaken, California · 18074 days ago · 10 km deep · 53 km away
  54. 1.96 km ENE of Interlaken, California · 18074 days ago · 10 km deep · 53 km away
  55. 2.31 km ESE of Tres Pinos, California · 18074 days ago · 8 km deep · 18 km away
  56. 2.24 km SW of Tres Pinos, California · 18074 days ago · 4 km deep · 18 km away
  57. 2.45 km SSW of Gilroy, California · 18073 days ago · 6 km deep · 47 km away
  58. 2.012 km N of Morgan Hill, California · 18073 days ago · 5 km deep · 76 km away
  59. 1.76 km ENE of Interlaken, California · 18073 days ago · 10 km deep · 54 km away
  60. 2.734 km WNW of San Simeon, California · 18073 days ago · 8 km deep · 94 km away

The first 60 of 177.

Before

  1. 2.225 km ENE of Soledad, California · 18082 days ago · 9 km deep · 18 km away
  2. 2.025 km ENE of Soledad, California · 18082 days ago · 9 km deep · 18 km away
  3. 2.223 km SE of Tres Pinos, California · 18082 days ago · 8 km deep · 10 km away
  4. 1.516 km NW of Parkfield, California · 18083 days ago · 1 km deep · 93 km away
  5. 2.524 km NE of Greenfield, California · 18083 days ago · 2 km deep · 23 km away
  6. 2.123 km ESE of Tres Pinos, California · 18083 days ago · 0 km deep · 19 km away
  7. 1.610 km NNW of Hollister, California · 18083 days ago · 0 km deep · 39 km away
  8. 1.524 km ENE of Greenfield, California · 18083 days ago · 1 km deep · 29 km away
  9. 1.623 km ESE of Tres Pinos, California · 18084 days ago · 1 km deep · 16 km away
  10. 1.83 km W of San Juan Bautista, California · 18084 days ago · 9 km deep · 38 km away
  11. 2.323 km NE of King City, California · 18084 days ago · 3 km deep · 39 km away
  12. 2.25 km WSW of Gilroy, California · 18084 days ago · 4 km deep · 51 km away
  13. 2.326 km ENE of Greenfield, California · 18084 days ago · 9 km deep · 32 km away
  14. 3.37 km W of Three Rocks, California · 18084 days ago · 6 km deep · 70 km away
  15. 1.85 km NNE of Corralitos, California · 18085 days ago · 2 km deep · 66 km away
  16. 1.65 km SSW of Tres Pinos, California · 18085 days ago · 8 km deep · 15 km away
  17. 1.727 km ENE of Soledad, California · 18085 days ago · 5 km deep · 19 km away
  18. 1.822 km NNE of Soledad, California · 18085 days ago · 2 km deep · 5 km away
  19. 1.913 km S of Tres Pinos, California · 18085 days ago · 4 km deep · 6 km away
  20. 3.125 km WNW of Three Rocks, California · 18085 days ago · 3 km deep · 53 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1034607. Read Fri, Oct 2, 2026, 7:03 AM UTC.