California earthquakes

M1.8 earthquake Central California

A magnitude 1.8 earthquake struck in Central California on Thu, Sep 23, 1982, 2:55 AM PDT (09:55 UTC), 6 km (3 mi) below the surface.

A larger quake followed: M5.4 22 km SSW of Three Rocks, California. This one was a foreshock.

Ridgemark 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), micro
Local time
UTC
1982-09-23 09:55:18 UTC
Depth
5.5 km (3.4 mi), shallow
Epicenter
36.642° N, 121.258° 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, 0.3 km in depth
Magnitude uncertainty
±0.22
Depth from
From location
Station coverage gap
39°
Stations used
47

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 195 in the 60 days after this one and 93 in the 30 days before it.

After

  1. 1.622 km NE of Soledad, California · 16074 days ago · 3 km deep · 9 km away
  2. 1.75 km SSW of Ridgemark, California · 16074 days ago · 10 km deep · 19 km away
  3. 1.711 km NNW of Hollister, California · 16074 days ago · 7 km deep · 38 km away
  4. 1.84 km SSW of Ridgemark, California · 16073 days ago · 1 km deep · 18 km away
  5. 4.012 km S of Tres Pinos, California · 16073 days ago · 7 km deep · 6 km away
  6. 2.212 km S of Tres Pinos, California · 16073 days ago · 6 km deep · 7 km away
  7. 2.311 km S of Tres Pinos, California · 16073 days ago · 5 km deep · 7 km away
  8. 3.111 km S of Tres Pinos, California · 16073 days ago · 5 km deep · 7 km away
  9. 2.312 km S of Tres Pinos, California · 16073 days ago · 5 km deep · 6 km away
  10. 2.111 km S of Tres Pinos, California · 16073 days ago · 5 km deep · 7 km away
  11. 2.111 km S of Tres Pinos, California · 16073 days ago · 5 km deep · 7 km away
  12. 1.812 km S of Tres Pinos, California · 16073 days ago · 5 km deep · 6 km away
  13. 2.711 km S of Tres Pinos, California · 16073 days ago · 5 km deep · 8 km away
  14. 3.812 km S of Tres Pinos, California · 16072 days ago · 5 km deep · 6 km away
  15. 2.712 km S of Tres Pinos, California · 16072 days ago · 5 km deep · 6 km away
  16. 2.312 km S of Tres Pinos, California · 16072 days ago · 5 km deep · 5 km away
  17. 1.611 km S of Tres Pinos, California · 16072 days ago · 6 km deep · 7 km away
  18. 3.412 km S of Tres Pinos, California · 16072 days ago · 7 km deep · 5 km away
  19. 1.613 km S of Tres Pinos, California · 16072 days ago · 6 km deep · 4 km away
  20. 2.612 km S of Tres Pinos, California · 16072 days ago · 5 km deep · 6 km away
  21. 1.713 km S of Tres Pinos, California · 16072 days ago · 5 km deep · 5 km away
  22. 3.012 km S of Tres Pinos, California · 16072 days ago · 6 km deep · 5 km away
  23. 3.214 km S of Tres Pinos, California · 16072 days ago · 6 km deep · 7 km away
  24. 3.212 km S of Tres Pinos, California · 16072 days ago · 6 km deep · 6 km away
  25. 1.812 km S of Tres Pinos, California · 16072 days ago · 5 km deep · 6 km away
  26. 2.412 km S of Tres Pinos, California · 16072 days ago · 5 km deep · 6 km away
  27. 2.112 km S of Tres Pinos, California · 16072 days ago · 5 km deep · 6 km away
  28. 1.93 km SSE of San Ardo, California · 16072 days ago · 10 km deep · 79 km away
  29. 2.312 km S of Tres Pinos, California · 16072 days ago · 6 km deep · 5 km away
  30. 2.413 km S of Tres Pinos, California · 16072 days ago · 6 km deep · 5 km away
  31. 2.15 km SSW of Gilroy, California · 16072 days ago · 4 km deep · 46 km away
  32. 1.711 km S of Tres Pinos, California · 16071 days ago · 6 km deep · 7 km away
  33. 1.712 km S of Tres Pinos, California · 16071 days ago · 4 km deep · 6 km away
  34. 1.711 km S of Tres Pinos, California · 16071 days ago · 3 km deep · 7 km away
  35. 1.86 km WSW of Gilroy, California · 16071 days ago · 5 km deep · 51 km away
  36. 1.79 km SSW of Ridgemark, California · 16070 days ago · 6 km deep · 17 km away
  37. 1.513 km N of Morgan Hill, California · 16070 days ago · 7 km deep · 77 km away
  38. 1.627 km NE of Greenfield, California · 16070 days ago · 5 km deep · 27 km away
  39. 1.712 km S of Tres Pinos, California · 16070 days ago · 5 km deep · 6 km away
  40. 2.08 km ENE of Gilroy, California · 16070 days ago · 8 km deep · 50 km away
  41. 1.55 km SE of Cambrian Park, California · 16070 days ago · 0 km deep · 85 km away
  42. 1.69 km NNE of Coalinga, California · 16069 days ago · 11 km deep · 96 km away
  43. 1.611 km S of Tres Pinos, California · 16069 days ago · 5 km deep · 7 km away
  44. 1.622 km NE of San Lucas, California · 16069 days ago · 6 km deep · 56 km away
  45. 2.223 km ENE of Greenfield, California · 16068 days ago · 5 km deep · 35 km away
  46. 2.524 km NE of Greenfield, California · 16068 days ago · 5 km deep · 27 km away
  47. 1.524 km NE of Greenfield, California · 16068 days ago · 4 km deep · 27 km away
  48. 1.624 km NE of Greenfield, California · 16068 days ago · 4 km deep · 27 km away
  49. 1.631 km SE of Big Sur, California · 16067 days ago · 7 km deep · 71 km away
  50. 2.34 km SSE of San Juan Bautista, California · 16066 days ago · 6 km deep · 31 km away
  51. 1.721 km NE of Soledad, California · 16065 days ago · 3 km deep · 13 km away
  52. 1.915 km NW of Parkfield, California · 16065 days ago · 4 km deep · 95 km away
  53. 2.0Central California · 16064 days ago · 7 km deep · 21 km away
  54. 1.58 km ESE of East Foothills, California · 16064 days ago · 7 km deep · 90 km away
  55. 2.19 km ENE of San Martin, California · 16064 days ago · 7 km deep · 58 km away
  56. 2.04 km SSE of San Juan Bautista, California · 16062 days ago · 5 km deep · 30 km away
  57. 1.910 km SSW of Tres Pinos, California · 16062 days ago · 7 km deep · 11 km away
  58. 1.610 km SSW of Tres Pinos, California · 16062 days ago · 6 km deep · 11 km away
  59. 2.130 km ENE of Soledad, California · 16062 days ago · 6 km deep · 21 km away
  60. 1.930 km ENE of Soledad, California · 16061 days ago · 7 km deep · 21 km away

The first 60 of 195.

Before

  1. 2.02 km SSW of San Juan Bautista, California · 16075 days ago · 3 km deep · 33 km away
  2. 2.313 km S of Tres Pinos, California · 16075 days ago · 5 km deep · 5 km away
  3. 2.115 km SSE of Tres Pinos, California · 16075 days ago · 5 km deep · 3 km away
  4. 2.124 km NE of Greenfield, California · 16076 days ago · 5 km deep · 26 km away
  5. 1.924 km ENE of Soledad, California · 16076 days ago · 3 km deep · 23 km away
  6. 1.610 km S of Tres Pinos, California · 16076 days ago · 6 km deep · 9 km away
  7. 1.614 km SSE of Tres Pinos, California · 16077 days ago · 6 km deep · 3 km away
  8. 1.724 km NE of San Lucas, California · 16077 days ago · 7 km deep · 58 km away
  9. 2.73 km S of San Juan Bautista, California · 16077 days ago · 6 km deep · 32 km away
  10. 1.714 km SSE of Tres Pinos, California · 16077 days ago · 6 km deep · 3 km away
  11. 3.114 km SSE of Tres Pinos, California · 16078 days ago · 5 km deep · 3 km away
  12. 2.82 km SSW of San Juan Bautista, California · 16078 days ago · 5 km deep · 33 km away
  13. 1.914 km N of Morgan Hill, California · 16078 days ago · 5 km deep · 77 km away
  14. 2.114 km SSE of Tres Pinos, California · 16078 days ago · 4 km deep · 3 km away
  15. 2.814 km SSE of Tres Pinos, California · 16078 days ago · 5 km deep · 3 km away
  16. 1.79 km NE of San Martin, California · 16078 days ago · 8 km deep · 60 km away
  17. 1.838 km SSW of South Dos Palos, California · 16078 days ago · 8 km deep · 38 km away
  18. 1.814 km SSE of Tres Pinos, California · 16079 days ago · 5 km deep · 3 km away
  19. 2.423 km NW of Parkfield, California · 16079 days ago · 7 km deep · 88 km away
  20. 2.111 km S of Tres Pinos, California · 16080 days ago · 5 km deep · 8 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1079384. Read Sat, Sep 26, 2026, 3:10 PM UTC.