California earthquakes

M1.8 earthquake 7 km WSW of Gilroy, California

A magnitude 1.8 earthquake struck 7 km WSW of Gilroy, California on Sat, Dec 17, 1983, 9:31 AM PST (17:31 UTC), 4 km (2 mi) below the surface.

A larger quake followed: M2.0 36 km SSW of South Dos Palos, California. This one was a foreshock.

Gilroy 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
1.8 (md), micro
Local time
UTC
1983-12-17 17:31:14 UTC
Depth
3.9 km (2.4 mi), shallow
Epicenter
36.973° N, 121.640° 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, 0.5 km in depth
Magnitude uncertainty
±0.17
Depth from
From location
Station coverage gap
75°
Stations used
26

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 153 in the 60 days after this one and 15 in the 30 days before it.

After

  1. 2.036 km SSW of South Dos Palos, California · 15620 days ago · 6 km deep · 78 km away
  2. 1.636 km SSW of South Dos Palos, California · 15620 days ago · 4 km deep · 78 km away
  3. 1.53 km ESE of Aromas, California · 15618 days ago · 6 km deep · 11 km away
  4. 1.95 km SSE of San Juan Bautista, California · 15617 days ago · 5 km deep · 22 km away
  5. 2.55 km SSE of San Juan Bautista, California · 15617 days ago · 5 km deep · 22 km away
  6. 1.924 km NE of Greenfield, California · 15616 days ago · 5 km deep · 78 km away
  7. 2.02 km ESE of Tres Pinos, California · 15615 days ago · 9 km deep · 38 km away
  8. 2.128 km E of Tres Pinos, California · 15614 days ago · 1 km deep · 61 km away
  9. 1.824 km ENE of Soledad, California · 15614 days ago · 3 km deep · 73 km away
  10. 1.88 km SE of San Juan Bautista, California · 15614 days ago · 4 km deep · 25 km away
  11. 1.61 km NNW of Ashland, California · 15614 days ago · 7 km deep · 92 km away
  12. 1.73 km NNE of Interlaken, California · 15613 days ago · 11 km deep · 7 km away
  13. 2.32 km W of Portola Valley, California · 15613 days ago · 8 km deep · 72 km away
  14. 2.02 km W of Portola Valley, California · 15613 days ago · 9 km deep · 71 km away
  15. 1.62 km W of Portola Valley, California · 15613 days ago · 9 km deep · 71 km away
  16. 1.72 km W of Portola Valley, California · 15613 days ago · 8 km deep · 72 km away
  17. 1.511 km WSW of Byron, California · 15613 days ago · 19 km deep · 96 km away
  18. 1.72 km NNE of Union City, California · 15613 days ago · 4 km deep · 78 km away
  19. 2.023 km ENE of Soledad, California · 15612 days ago · 4 km deep · 73 km away
  20. 1.62 km W of Portola Valley, California · 15612 days ago · 8 km deep · 71 km away
  21. 2.02 km WSW of Portola Valley, California · 15611 days ago · 8 km deep · 71 km away
  22. 2.19 km NE of Gilroy, California · 15611 days ago · 8 km deep · 16 km away
  23. 2.29 km NE of Gilroy, California · 15610 days ago · 8 km deep · 17 km away
  24. 1.924 km NE of Greenfield, California · 15610 days ago · 2 km deep · 77 km away
  25. 2.724 km NE of Greenfield, California · 15610 days ago · 3 km deep · 76 km away
  26. 1.74 km SSW of Hollister, California · 15609 days ago · 6 km deep · 26 km away
  27. 1.921 km NE of Soledad, California · 15609 days ago · 4 km deep · 66 km away
  28. 2.721 km NE of Soledad, California · 15609 days ago · 5 km deep · 66 km away
  29. 2.216 km N of Morgan Hill, California · 15607 days ago · 5 km deep · 34 km away
  30. 2.324 km ENE of Greenfield, California · 15607 days ago · 6 km deep · 85 km away
  31. 2.114 km SSE of Tres Pinos, California · 15606 days ago · 5 km deep · 47 km away
  32. 1.520 km SSW of Los Banos, California · 15606 days ago · 2 km deep · 66 km away
  33. 3.09 km NE of Gilroy, California · 15605 days ago · 6 km deep · 16 km away
  34. 2.522 km NNE of Soledad, California · 15604 days ago · 7 km deep · 58 km away
  35. 2.61 km WNW of Hollister, California · 15603 days ago · 5 km deep · 24 km away
  36. 2.023 km SE of Big Sur, California · 15603 days ago · 11 km deep · 93 km away
  37. 2.52 km ESE of Aromas, California · 15603 days ago · 6 km deep · 11 km away
  38. 1.923 km NE of King City, California · 15601 days ago · 4 km deep · 93 km away
  39. 1.69 km SSW of Tres Pinos, California · 15601 days ago · 3 km deep · 38 km away
  40. 3.37 km ESE of East Foothills, California · 15601 days ago · 6 km deep · 45 km away
  41. 2.124 km NE of Greenfield, California · 15601 days ago · 4 km deep · 76 km away
  42. 1.66 km ESE of East Foothills, California · 15601 days ago · 1 km deep · 44 km away
  43. 1.613 km S of Tres Pinos, California · 15601 days ago · 4 km deep · 46 km away
  44. 2.55 km NNW of East Foothills, California · 15600 days ago · 2 km deep · 53 km away
  45. 2.75 km NNW of East Foothills, California · 15600 days ago · 1 km deep · 54 km away
  46. 1.926 km SE of Tres Pinos, California · 15599 days ago · 17 km deep · 61 km away
  47. 1.96 km ENE of East Foothills, California · 15599 days ago · 8 km deep · 50 km away
  48. 2.421 km NE of Soledad, California · 15598 days ago · 5 km deep · 61 km away
  49. 2.234 km SW of South Dos Palos, California · 15597 days ago · 0 km deep · 73 km away
  50. 1.726 km SE of Big Sur, California · 15597 days ago · 13 km deep · 95 km away
  51. 1.524 km ENE of Soledad, California · 15597 days ago · 3 km deep · 71 km away
  52. 2.017 km SSE of Tres Pinos, California · 15597 days ago · 7 km deep · 51 km away
  53. 2.38 km ESE of East Foothills, California · 15596 days ago · 7 km deep · 44 km away
  54. 2.17 km NE of San Martin, California · 15596 days ago · 3 km deep · 20 km away
  55. 3.26 km ESE of East Foothills, California · 15595 days ago · 1 km deep · 43 km away
  56. 1.67 km ESE of East Foothills, California · 15595 days ago · 0 km deep · 44 km away
  57. 1.96 km ESE of Big Sur, California · 15594 days ago · 12 km deep · 80 km away
  58. 1.66 km ESE of Fremont, California · 15594 days ago · 6 km deep · 67 km away
  59. 2.713 km N of Morgan Hill, California · 15593 days ago · 5 km deep · 31 km away
  60. 2.88 km ENE of Morgan Hill, California · 15592 days ago · 2 km deep · 22 km away

The first 60 of 153.

Before

  1. 3.28 km ENE of Gilroy, California · 15621 days ago · 8 km deep · 16 km away
  2. 2.122 km SSE of Big Sur, California · 15621 days ago · 17 km deep · 100 km away
  3. 2.424 km ENE of Soledad, California · 15621 days ago · 2 km deep · 74 km away
  4. 2.4Central California · 15623 days ago · 7 km deep · 77 km away
  5. 2.121 km NE of Soledad, California · 15623 days ago · 6 km deep · 65 km away
  6. 1.721 km NE of Soledad, California · 15623 days ago · 4 km deep · 66 km away
  7. 2.72 km S of San Juan Bautista, California · 15623 days ago · 6 km deep · 19 km away
  8. 2.02 km S of San Juan Bautista, California · 15624 days ago · 6 km deep · 19 km away
  9. 3.41 km ENE of Ridgemark, California · 15624 days ago · 5 km deep · 31 km away
  10. 2.16 km E of East Foothills, California · 15625 days ago · 6 km deep · 47 km away
  11. 1.921 km SSE of Tres Pinos, California · 15626 days ago · 5 km deep · 55 km away
  12. 2.721 km SSE of Tres Pinos, California · 15626 days ago · 6 km deep · 55 km away
  13. 2.010 km SSE of Livermore, California · 15627 days ago · 5 km deep · 70 km away
  14. 2.110 km S of Tres Pinos, California · 15627 days ago · 5 km deep · 42 km away
  15. 1.910 km S of Tres Pinos, California · 15627 days ago · 5 km deep · 42 km away

Earthquakes todayCalifornia earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1108615. Read Tue, Sep 22, 2026, 10:31 PM UTC.