California earthquakes

M1.9 earthquake 21 km NNE of Soledad, California

A magnitude 1.9 earthquake struck 21 km NNE of Soledad, California on Fri, Dec 16, 1977, 1:46 PM PST (21:46 UTC), 7 km (5 mi) below the surface.

A larger quake followed: M2.4 26 km NE of Greenfield, California. This one was a foreshock.

Soledad forecastMore in California

Map

Where this earthquake was located, with the others nearby. Select one for its page.

Open the live map with earthquakes

The earthquake

Magnitude
1.9 (md), micro
Local time
UTC
1977-12-16 21:46:54 UTC
Depth
7.4 km (4.6 mi), shallow
Epicenter
36.593° N, 121.202° 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, 0.8 km in depth
Magnitude uncertainty
±0.13
Depth from
From location
Station coverage gap
61°
Stations used
23

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 144 in the 60 days after this one and 46 in the 30 days before it.

After

  1. 2.426 km NE of Greenfield, California · 17812 days ago · 5 km deep · 20 km away
  2. 2.521 km NNE of Soledad, California · 17811 days ago · 7 km deep · 0 km away
  3. 1.821 km NE of Soledad, California · 17811 days ago · 3 km deep · 2 km away
  4. 1.712 km ESE of East Foothills, California · 17811 days ago · 7 km deep · 93 km away
  5. 2.13 km SSE of San Juan Bautista, California · 17811 days ago · 4 km deep · 38 km away
  6. 1.920 km NW of Parkfield, California · 17810 days ago · 8 km deep · 83 km away
  7. 1.620 km NW of Parkfield, California · 17810 days ago · 8 km deep · 82 km away
  8. 1.610 km S of Tres Pinos, California · 17809 days ago · 4 km deep · 17 km away
  9. 2.27 km E of East Foothills, California · 17806 days ago · 6 km deep · 99 km away
  10. 1.622 km NE of Soledad, California · 17806 days ago · 7 km deep · 7 km away
  11. 1.89 km NW of Hollister, California · 17806 days ago · 5 km deep · 43 km away
  12. 1.710 km ESE of East Foothills, California · 17805 days ago · 7 km deep · 95 km away
  13. 1.623 km NW of Parkfield, California · 17805 days ago · 0 km deep · 80 km away
  14. 2.51 km NNE of Tres Pinos, California · 17805 days ago · 8 km deep · 25 km away
  15. 1.66 km NNW of Hollister, California · 17805 days ago · 3 km deep · 40 km away
  16. 1.7Central California · 17804 days ago · 1 km deep · 23 km away
  17. 1.623 km WNW of Diablo Grande, California · 17804 days ago · 2 km deep · 100 km away
  18. 2.021 km NNE of Soledad, California · 17803 days ago · 8 km deep · 1 km away
  19. 1.714 km E of Seven Trees, California · 17803 days ago · 3 km deep · 88 km away
  20. 2.024 km NE of King City, California · 17801 days ago · 4 km deep · 32 km away
  21. 2.26 km WSW of Gilroy, California · 17800 days ago · 3 km deep · 58 km away
  22. 1.912 km SW of Tres Pinos, California · 17800 days ago · 9 km deep · 22 km away
  23. 2.211 km S of Tres Pinos, California · 17799 days ago · 4 km deep · 15 km away
  24. 2.36 km ESE of East Foothills, California · 17799 days ago · 2 km deep · 99 km away
  25. 2.04 km ESE of Aromas, California · 17798 days ago · 6 km deep · 47 km away
  26. 2.322 km NE of San Lucas, California · 17798 days ago · 6 km deep · 48 km away
  27. 1.612 km SW of Tres Pinos, California · 17798 days ago · 9 km deep · 21 km away
  28. 2.621 km NE of Soledad, California · 17797 days ago · 7 km deep · 2 km away
  29. 3.39 km NNW of Hollister, California · 17797 days ago · 2 km deep · 43 km away
  30. 1.91 km ESE of Tres Pinos, California · 17796 days ago · 7 km deep · 23 km away
  31. 1.619 km ENE of Big Sur, California · 17796 days ago · 7 km deep · 47 km away
  32. 1.6Central California · 17796 days ago · 8 km deep · 21 km away
  33. 1.623 km NE of Greenfield, California · 17796 days ago · 1 km deep · 19 km away
  34. 1.9Central California · 17796 days ago · 8 km deep · 8 km away
  35. 1.84 km NE of Interlaken, California · 17796 days ago · 12 km deep · 62 km away
  36. 2.312 km SW of Tres Pinos, California · 17796 days ago · 9 km deep · 21 km away
  37. 2.6Central California · 17796 days ago · 6 km deep · 2 km away
  38. 2.1Central California · 17796 days ago · 4 km deep · 30 km away
  39. 2.022 km ENE of Tres Pinos, California · 17796 days ago · 6 km deep · 30 km away
  40. 3.1Central California · 17796 days ago · 9 km deep · 12 km away
  41. 2.127 km ENE of Soledad, California · 17796 days ago · 9 km deep · 13 km away
  42. 1.812 km SW of Tres Pinos, California · 17795 days ago · 8 km deep · 22 km away
  43. 1.621 km NNE of Soledad, California · 17795 days ago · 4 km deep · 1 km away
  44. 2.53 km S of San Juan Bautista, California · 17795 days ago · 7 km deep · 39 km away
  45. 2.54 km SW of Tres Pinos, California · 17794 days ago · 13 km deep · 22 km away
  46. 1.917 km NW of Parkfield, California · 17794 days ago · 3 km deep · 86 km away
  47. 1.624 km NE of Greenfield, California · 17794 days ago · 5 km deep · 18 km away
  48. 1.821 km NE of Soledad, California · 17794 days ago · 7 km deep · 2 km away
  49. 1.68 km SSW of Ridgemark, California · 17792 days ago · 6 km deep · 25 km away
  50. 3.010 km NNW of Hollister, California · 17792 days ago · 2 km deep · 44 km away
  51. 1.626 km NE of Soledad, California · 17792 days ago · 8 km deep · 10 km away
  52. 1.823 km NE of San Lucas, California · 17791 days ago · 6 km deep · 45 km away
  53. 1.812 km SW of Tres Pinos, California · 17791 days ago · 8 km deep · 21 km away
  54. 3.112 km SW of Tres Pinos, California · 17791 days ago · 9 km deep · 22 km away
  55. 1.612 km SW of Tres Pinos, California · 17791 days ago · 9 km deep · 21 km away
  56. 3.026 km NE of Greenfield, California · 17791 days ago · 8 km deep · 22 km away
  57. 1.922 km NE of San Lucas, California · 17791 days ago · 7 km deep · 48 km away
  58. 1.84 km W of Ridgemark, California · 17790 days ago · 3 km deep · 31 km away
  59. 2.014 km E of Tres Pinos, California · 17790 days ago · 5 km deep · 21 km away
  60. 2.914 km W of Oak Shores, California · 17789 days ago · 12 km deep · 91 km away

The first 60 of 144.

Before

  1. 2.411 km NW of Parkfield, California · 17812 days ago · 8 km deep · 92 km away
  2. 1.820 km NW of Parkfield, California · 17812 days ago · 8 km deep · 83 km away
  3. 3.16 km NW of Parkfield, California · 17812 days ago · 10 km deep · 96 km away
  4. 2.021 km NNE of Soledad, California · 17812 days ago · 7 km deep · 0 km away
  5. 1.72 km SW of Hollister, California · 17812 days ago · 5 km deep · 34 km away
  6. 2.421 km NNE of Soledad, California · 17812 days ago · 7 km deep · 0 km away
  7. 1.521 km NNE of Soledad, California · 17812 days ago · 7 km deep · 0 km away
  8. 2.45 km WSW of Gilroy, California · 17812 days ago · 2 km deep · 57 km away
  9. 1.521 km NNE of Soledad, California · 17813 days ago · 7 km deep · 0 km away
  10. 1.621 km NW of Parkfield, California · 17813 days ago · 3 km deep · 82 km away
  11. 1.821 km NNE of Soledad, California · 17813 days ago · 7 km deep · 0 km away
  12. 1.921 km NNE of Soledad, California · 17813 days ago · 7 km deep · 0 km away
  13. 4.221 km NNE of Soledad, California · 17813 days ago · 8 km deep · 0 km away
  14. 2.222 km ENE of San Ardo, California · 17813 days ago · 3 km deep · 71 km away
  15. 1.75 km SSW of Tres Pinos, California · 17814 days ago · 7 km deep · 21 km away
  16. 2.420 km NW of Parkfield, California · 17814 days ago · 8 km deep · 83 km away
  17. 1.84 km SSW of Gilroy, California · 17814 days ago · 6 km deep · 54 km away
  18. 1.923 km ENE of King City, California · 17815 days ago · 4 km deep · 40 km away
  19. 2.324 km NE of Greenfield, California · 17815 days ago · 6 km deep · 19 km away
  20. 1.923 km NW of Parkfield, California · 17815 days ago · 7 km deep · 80 km away

Earthquakes todayCalifornia earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1038176. Read Tue, Sep 22, 2026, 12:12 PM UTC.