California earthquakes

M1.8 earthquake 5 km NNE of Corralitos, California

A magnitude 1.8 earthquake struck 5 km NNE of Corralitos, California on Mon, Mar 28, 1977, 7:28 AM PST (15:28 UTC), 2 km (1 mi) below the surface.

A larger quake followed: M3.5 15 km SSE of Tres Pinos, California. This one was a foreshock.

Corralitos 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
1977-03-28 15:28:30 UTC
Depth
2.0 km (1.2 mi), shallow
Epicenter
37.035° N, 121.787° 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 1.1 km horizontally, 0.8 km in depth
Magnitude uncertainty
±0.36
Depth from
From location
Station coverage gap
193°, poorly surrounded by stations
Stations used
9

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 174 in the 60 days after this one and 130 in the 30 days before it.

After

  1. 2.326 km ENE of Greenfield, California · 18084 days ago · 9 km deep · 98 km away
  2. 2.25 km WSW of Gilroy, California · 18084 days ago · 4 km deep · 16 km away
  3. 1.83 km W of San Juan Bautista, California · 18084 days ago · 9 km deep · 28 km away
  4. 1.623 km ESE of Tres Pinos, California · 18084 days ago · 1 km deep · 73 km away
  5. 1.524 km ENE of Greenfield, California · 18083 days ago · 1 km deep · 95 km away
  6. 1.610 km NNW of Hollister, California · 18083 days ago · 0 km deep · 32 km away
  7. 2.123 km ESE of Tres Pinos, California · 18083 days ago · 0 km deep · 72 km away
  8. 2.524 km NE of Greenfield, California · 18083 days ago · 2 km deep · 89 km away
  9. 1.88 km N of Boulder Creek, California · 18083 days ago · 13 km deep · 35 km away
  10. 2.223 km SE of Tres Pinos, California · 18082 days ago · 8 km deep · 73 km away
  11. 2.025 km ENE of Soledad, California · 18082 days ago · 9 km deep · 84 km away
  12. 2.225 km ENE of Soledad, California · 18082 days ago · 9 km deep · 84 km away
  13. 1.819 km SSE of Tres Pinos, California · 18082 days ago · 10 km deep · 66 km away
  14. 1.79 km NW of Hollister, California · 18082 days ago · 4 km deep · 31 km away
  15. 1.924 km ENE of Greenfield, California · 18082 days ago · 4 km deep · 99 km away
  16. 1.623 km NE of Greenfield, California · 18082 days ago · 5 km deep · 92 km away
  17. 2.71 km E of Hayward, California · 18081 days ago · 6 km deep · 75 km away
  18. 2.72 km WNW of Cambrian Park, California · 18081 days ago · 9 km deep · 30 km away
  19. 2.32 km SSW of Campbell, California · 18081 days ago · 7 km deep · 30 km away
  20. 1.53 km SSW of Ridgemark, California · 18080 days ago · 7 km deep · 46 km away
  21. 2.04 km SE of Aromas, California · 18080 days ago · 8 km deep · 25 km away
  22. 1.89 km E of San Martin, California · 18080 days ago · 7 km deep · 25 km away
  23. 2.04 km SE of Aromas, California · 18080 days ago · 8 km deep · 25 km away
  24. 1.64 km SE of Aromas, California · 18080 days ago · 8 km deep · 25 km away
  25. 3.02 km WNW of Cambrian Park, California · 18080 days ago · 9 km deep · 30 km away
  26. 2.02 km W of Cambrian Park, California · 18080 days ago · 7 km deep · 29 km away
  27. 2.25 km SE of Tres Pinos, California · 18080 days ago · 8 km deep · 55 km away
  28. 2.3Central California · 18079 days ago · 5 km deep · 84 km away
  29. 1.69 km NNW of Hollister, California · 18079 days ago · 3 km deep · 32 km away
  30. 2.210 km NNW of Hollister, California · 18079 days ago · 3 km deep · 31 km away
  31. 3.123 km ENE of Soledad, California · 18079 days ago · 3 km deep · 86 km away
  32. 1.715 km ENE of Hollister, California · 18079 days ago · 8 km deep · 49 km away
  33. 1.621 km ESE of Tres Pinos, California · 18079 days ago · 0 km deep · 71 km away
  34. 1.719 km ESE of Tres Pinos, California · 18079 days ago · 0 km deep · 68 km away
  35. 1.717 km SSE of Tres Pinos, California · 18079 days ago · 5 km deep · 64 km away
  36. 2.024 km ENE of Soledad, California · 18079 days ago · 6 km deep · 89 km away
  37. 1.722 km NE of Soledad, California · 18078 days ago · 9 km deep · 77 km away
  38. 2.824 km NE of Greenfield, California · 18078 days ago · 4 km deep · 90 km away
  39. 2.225 km NE of Soledad, California · 18078 days ago · 7 km deep · 78 km away
  40. 1.825 km NE of Soledad, California · 18078 days ago · 7 km deep · 79 km away
  41. 1.623 km NE of Greenfield, California · 18078 days ago · 8 km deep · 93 km away
  42. 2.92 km WNW of Cambrian Park, California · 18078 days ago · 8 km deep · 29 km away
  43. 2.524 km ENE of Greenfield, California · 18077 days ago · 6 km deep · 99 km away
  44. 2.324 km ENE of Greenfield, California · 18077 days ago · 6 km deep · 99 km away
  45. 2.530 km ENE of Soledad, California · 18077 days ago · 7 km deep · 84 km away
  46. 2.26 km ENE of Interlaken, California · 18077 days ago · 10 km deep · 13 km away
  47. 2.59 km NNW of Boulder Creek, California · 18077 days ago · 5 km deep · 39 km away
  48. 1.728 km ENE of Soledad, California · 18076 days ago · 6 km deep · 83 km away
  49. 1.82 km WNW of Cambrian Park, California · 18076 days ago · 7 km deep · 30 km away
  50. 2.121 km NE of Soledad, California · 18076 days ago · 6 km deep · 81 km away
  51. 2.117 km NE of San Martin, California · 18076 days ago · 5 km deep · 33 km away
  52. 1.82 km WNW of Cambrian Park, California · 18076 days ago · 8 km deep · 30 km away
  53. 2.215 km SW of Tracy, California · 18076 days ago · 3 km deep · 70 km away
  54. 2.25 km SW of Tres Pinos, California · 18076 days ago · 6 km deep · 49 km away
  55. 1.621 km NE of Soledad, California · 18075 days ago · 3 km deep · 77 km away
  56. 2.411 km ENE of Blackhawk, California · 18075 days ago · 11 km deep · 90 km away
  57. 1.94 km SSW of Gilroy, California · 18075 days ago · 6 km deep · 20 km away
  58. 2.16 km ENE of Interlaken, California · 18075 days ago · 10 km deep · 13 km away
  59. 1.96 km ENE of Interlaken, California · 18075 days ago · 10 km deep · 13 km away
  60. 2.14 km SSE of Fairview, California · 18075 days ago · 4 km deep · 71 km away

The first 60 of 174.

Before

  1. 1.65 km SSW of Tres Pinos, California · 18085 days ago · 8 km deep · 52 km away
  2. 1.727 km ENE of Soledad, California · 18085 days ago · 5 km deep · 85 km away
  3. 1.822 km NNE of Soledad, California · 18085 days ago · 2 km deep · 71 km away
  4. 1.913 km S of Tres Pinos, California · 18085 days ago · 4 km deep · 59 km away
  5. 1.913 km S of Tres Pinos, California · 18085 days ago · 4 km deep · 60 km away
  6. 1.613 km S of Tres Pinos, California · 18085 days ago · 4 km deep · 60 km away
  7. 2.22 km NNE of Union City, California · 18086 days ago · 4 km deep · 67 km away
  8. 2.113 km S of Tres Pinos, California · 18086 days ago · 4 km deep · 60 km away
  9. 1.624 km ENE of Soledad, California · 18086 days ago · 3 km deep · 85 km away
  10. 2.821 km NNE of Soledad, California · 18086 days ago · 8 km deep · 72 km away
  11. 2.423 km ENE of Soledad, California · 18087 days ago · 3 km deep · 86 km away
  12. 1.95 km SSW of Tres Pinos, California · 18087 days ago · 7 km deep · 51 km away
  13. 1.67 km NE of Gilroy, California · 18088 days ago · 6 km deep · 25 km away
  14. 1.627 km ENE of Soledad, California · 18088 days ago · 5 km deep · 84 km away
  15. 1.59 km NNW of Hollister, California · 18088 days ago · 4 km deep · 31 km away
  16. 1.832 km E of Tres Pinos, California · 18088 days ago · 2 km deep · 80 km away
  17. 1.92 km NNE of Los Gatos, California · 18089 days ago · 7 km deep · 29 km away
  18. 2.327 km SE of Tres Pinos, California · 18089 days ago · 6 km deep · 76 km away
  19. 1.72 km E of Tres Pinos, California · 18090 days ago · 8 km deep · 51 km away
  20. 1.623 km NE of Greenfield, California · 18090 days ago · 5 km deep · 91 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1034568. Read Fri, Oct 2, 2026, 6:01 AM UTC.