California earthquakes

M1.8 earthquake Central California

A magnitude 1.8 earthquake struck in Central California on Sat, Mar 12, 1977, 1:26 AM PST (09:26 UTC), 6 km (4 mi) below the surface.

A larger quake followed: M3.6 9 km NNW of Hollister, California. This one was a foreshock.

Hollister 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
1.8 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
1977-03-12 09:26:58 UTC
Depth
6.4 km (4.0 mi), shallow
Epicenter
36.906° N, 121.467° 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
±0.32
Depth from
From location
Station coverage gap
93°
Stations used
33

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 150 in the 30 days before it.

After

  1. 2.325 km NE of Greenfield, California · 18103 days ago · 8 km deep · 65 km away
  2. 1.521 km NE of Soledad, California · 18102 days ago · 5 km deep · 48 km away
  3. 1.77 km WSW of Gilroy, California · 18102 days ago · 5 km deep · 19 km away
  4. 1.59 km SSW of Tres Pinos, California · 18102 days ago · 7 km deep · 25 km away
  5. 2.023 km NE of Greenfield, California · 18102 days ago · 5 km deep · 61 km away
  6. 2.52 km WNW of Cambrian Park, California · 18101 days ago · 8 km deep · 59 km away
  7. 1.66 km ESE of Lexington Hills, California · 18101 days ago · 11 km deep · 47 km away
  8. 2.28 km ENE of Gilroy, California · 18101 days ago · 7 km deep · 14 km away
  9. 2.019 km SSE of Tres Pinos, California · 18101 days ago · 4 km deep · 37 km away
  10. 1.521 km ESE of Tres Pinos, California · 18100 days ago · 5 km deep · 39 km away
  11. 2.221 km NE of Soledad, California · 18100 days ago · 6 km deep · 48 km away
  12. 2.821 km NE of Soledad, California · 18100 days ago · 6 km deep · 48 km away
  13. 2.325 km ENE of Greenfield, California · 18100 days ago · 3 km deep · 67 km away
  14. 2.125 km ENE of Greenfield, California · 18100 days ago · 5 km deep · 67 km away
  15. 1.66 km N of San Juan Bautista, California · 18100 days ago · 7 km deep · 7 km away
  16. 1.916 km SSE of Tres Pinos, California · 18100 days ago · 4 km deep · 34 km away
  17. 1.915 km SSE of Tres Pinos, California · 18100 days ago · 3 km deep · 32 km away
  18. 2.85 km NNE of Tres Pinos, California · 18100 days ago · 6 km deep · 17 km away
  19. 2.09 km NNW of Hollister, California · 18100 days ago · 4 km deep · 2 km away
  20. 3.69 km NNW of Hollister, California · 18100 days ago · 7 km deep · 2 km away
  21. 3.39 km NW of Hollister, California · 18100 days ago · 5 km deep · 2 km away
  22. 2.29 km NNW of Hollister, California · 18099 days ago · 5 km deep · 3 km away
  23. 3.010 km NNW of Hollister, California · 18099 days ago · 7 km deep · 3 km away
  24. 1.85 km SSW of Tres Pinos, California · 18099 days ago · 7 km deep · 22 km away
  25. 3.05 km SSW of Tres Pinos, California · 18099 days ago · 7 km deep · 21 km away
  26. 1.95 km SSW of Tres Pinos, California · 18099 days ago · 7 km deep · 22 km away
  27. 1.65 km SSW of Tres Pinos, California · 18099 days ago · 7 km deep · 22 km away
  28. 2.05 km SSW of Tres Pinos, California · 18099 days ago · 7 km deep · 22 km away
  29. 1.85 km SSW of Tres Pinos, California · 18099 days ago · 8 km deep · 21 km away
  30. 1.75 km SSW of Tres Pinos, California · 18099 days ago · 8 km deep · 21 km away
  31. 2.65 km SSW of Tres Pinos, California · 18099 days ago · 8 km deep · 22 km away
  32. 2.221 km NE of San Lucas, California · 18099 days ago · 8 km deep · 93 km away
  33. 2.69 km NW of Hollister, California · 18099 days ago · 6 km deep · 1 km away
  34. 1.65 km SSW of Tres Pinos, California · 18099 days ago · 8 km deep · 21 km away
  35. 3.05 km SSW of Tres Pinos, California · 18099 days ago · 8 km deep · 21 km away
  36. 2.15 km SSW of Tres Pinos, California · 18099 days ago · 8 km deep · 21 km away
  37. 1.95 km SSW of Tres Pinos, California · 18099 days ago · 8 km deep · 21 km away
  38. 1.724 km NE of Greenfield, California · 18099 days ago · 1 km deep · 62 km away
  39. 2.023 km NE of Greenfield, California · 18098 days ago · 6 km deep · 63 km away
  40. 2.25 km SSW of Tres Pinos, California · 18098 days ago · 8 km deep · 21 km away
  41. 1.75 km SSW of Tres Pinos, California · 18098 days ago · 8 km deep · 21 km away
  42. 2.49 km SSE of Tres Pinos, California · 18098 days ago · 8 km deep · 27 km away
  43. 2.121 km SSE of Tres Pinos, California · 18098 days ago · 2 km deep · 39 km away
  44. 1.724 km NNE of King City, California · 18098 days ago · 6 km deep · 71 km away
  45. 2.85 km SSW of Tres Pinos, California · 18098 days ago · 9 km deep · 21 km away
  46. 1.65 km SSW of Tres Pinos, California · 18098 days ago · 8 km deep · 21 km away
  47. 1.85 km SSW of Tres Pinos, California · 18096 days ago · 8 km deep · 21 km away
  48. 3.418 km ENE of East Foothills, California · 18096 days ago · 6 km deep · 59 km away
  49. 2.021 km SSE of Tres Pinos, California · 18096 days ago · 2 km deep · 39 km away
  50. 2.33 km NE of Day Valley, California · 18096 days ago · 4 km deep · 36 km away
  51. 1.917 km ENE of East Foothills, California · 18096 days ago · 7 km deep · 59 km away
  52. 1.725 km ENE of Greenfield, California · 18096 days ago · 7 km deep · 70 km away
  53. 1.57 km NNW of Morgan Hill, California · 18095 days ago · 4 km deep · 38 km away
  54. 2.224 km NE of Soledad, California · 18094 days ago · 9 km deep · 47 km away
  55. 2.525 km ENE of Greenfield, California · 18094 days ago · 5 km deep · 69 km away
  56. 2.327 km ENE of Soledad, California · 18093 days ago · 5 km deep · 54 km away
  57. 2.424 km NE of Greenfield, California · 18093 days ago · 5 km deep · 61 km away
  58. 2.28 km NW of Hollister, California · 18093 days ago · 7 km deep · 0 km away
  59. 1.624 km NE of Greenfield, California · 18092 days ago · 5 km deep · 62 km away
  60. 1.923 km NE of Greenfield, California · 18092 days ago · 5 km deep · 61 km away

The first 60 of 186.

Before

  1. 3.68 km NW of Hollister, California · 18103 days ago · 7 km deep · 0 km away
  2. 2.330 km WNW of Three Rocks, California · 18104 days ago · 12 km deep · 76 km away
  3. 3.228 km WNW of Three Rocks, California · 18104 days ago · 13 km deep · 78 km away
  4. 1.928 km WNW of Three Rocks, California · 18104 days ago · 12 km deep · 78 km away
  5. 1.822 km NNE of Soledad, California · 18105 days ago · 6 km deep · 42 km away
  6. 1.628 km NE of Soledad, California · 18105 days ago · 7 km deep · 49 km away
  7. 2.03 km E of Hollister, California · 18106 days ago · 8 km deep · 12 km away
  8. 1.86 km ESE of Big Sur, California · 18106 days ago · 11 km deep · 78 km away
  9. 1.89 km SSW of Ridgemark, California · 18106 days ago · 6 km deep · 19 km away
  10. 1.921 km ESE of Tres Pinos, California · 18107 days ago · 6 km deep · 39 km away
  11. 1.85 km SSW of Tres Pinos, California · 18108 days ago · 7 km deep · 21 km away
  12. 1.628 km ENE of Soledad, California · 18108 days ago · 8 km deep · 52 km away
  13. 1.713 km N of Morgan Hill, California · 18108 days ago · 6 km deep · 42 km away
  14. 2.55 km WSW of Gilroy, California · 18109 days ago · 3 km deep · 16 km away
  15. 1.99 km ESE of East Foothills, California · 18109 days ago · 7 km deep · 55 km away
  16. 1.821 km ESE of Tres Pinos, California · 18109 days ago · 1 km deep · 39 km away
  17. 2.58 km ESE of East Foothills, California · 18109 days ago · 7 km deep · 55 km away
  18. 1.920 km ESE of Tres Pinos, California · 18110 days ago · 4 km deep · 38 km away
  19. 1.9Central California · 18110 days ago · 4 km deep · 38 km away
  20. 1.821 km ESE of Tres Pinos, California · 18110 days ago · 4 km deep · 39 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1034346. Read Sun, Oct 4, 2026, 8:35 PM UTC.