California earthquakes

M2.3 earthquake 17 km SW of Gustine, California

A magnitude 2.3 earthquake struck 17 km SW of Gustine, California on Sat, Nov 21, 1987, 4:13 AM PST (12:13 UTC), 0 km (0 mi) below the surface.

A larger quake followed: M4.5 28 km SW of South Dos Palos, California. This one was a foreshock.

Gustine 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
2.3 (md), micro
Local time
UTC
1987-11-21 12:13:09 UTC
Depth
-0.3 km (-0.2 mi), shallow
Epicenter
37.149° N, 121.149° 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 0.4 km horizontally, 3.3 km in depth
Magnitude uncertainty
±0.09
Depth from
From location
Station coverage gap
190°, poorly surrounded by stations
Stations used
62

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 166 in the 60 days after this one and 79 in the 30 days before it.

After

  1. 1.73 km S of Merced, California · 14190 days ago · 5 km deep · 60 km away
  2. 2.413 km NE of East Foothills, California · 14190 days ago · 6 km deep · 63 km away
  3. 2.524 km NE of Soledad, California · 14189 days ago · 7 km deep · 67 km away
  4. 1.52 km WSW of San Juan Bautista, California · 14189 days ago · 4 km deep · 50 km away
  5. 2.322 km NNE of Soledad, California · 14188 days ago · 5 km deep · 61 km away
  6. 1.822 km NNE of Soledad, California · 14188 days ago · 6 km deep · 61 km away
  7. 1.5Northern California · 14187 days ago · 5 km deep · 63 km away
  8. 2.12 km SE of San Ramon, California · 14187 days ago · 8 km deep · 99 km away
  9. 1.62 km SE of San Ramon, California · 14187 days ago · 7 km deep · 99 km away
  10. 1.616 km SSE of Livermore, CA · 14187 days ago · 6 km deep · 65 km away
  11. 1.831 km ENE of Soledad, California · 14186 days ago · 7 km deep · 65 km away
  12. 1.62 km SSW of Hollister, California · 14186 days ago · 8 km deep · 42 km away
  13. 1.630 km ENE of Soledad, California · 14186 days ago · 7 km deep · 65 km away
  14. 1.78 km ESE of East Foothills, California · 14185 days ago · 8 km deep · 56 km away
  15. 1.729 km SW of South Dos Palos, California · 14184 days ago · 5 km deep · 49 km away
  16. 1.715 km SSE of Livermore, California · 14183 days ago · 2 km deep · 65 km away
  17. 1.711 km SSW of Mountain House, California · 14183 days ago · 14 km deep · 73 km away
  18. 1.612 km E of Livermore, California · 14183 days ago · 12 km deep · 72 km away
  19. 2.113 km SSW of Mountain House, California · 14183 days ago · 14 km deep · 72 km away
  20. 1.513 km E of Livermore, California · 14183 days ago · 12 km deep · 71 km away
  21. 2.025 km NNE of King City, California · 14183 days ago · 1 km deep · 84 km away
  22. 2.916 km SSE of Livermore, California · 14182 days ago · 2 km deep · 65 km away
  23. 1.814 km E of Seven Trees, California · 14182 days ago · 2 km deep · 49 km away
  24. 1.725 km NE of Greenfield, California · 14182 days ago · 8 km deep · 78 km away
  25. 3.318 km SSE of Livermore, California · 14182 days ago · 6 km deep · 63 km away
  26. 2.124 km NE of Greenfield, California · 14182 days ago · 0 km deep · 77 km away
  27. 2.0Central California · 14181 days ago · 5 km deep · 60 km away
  28. 2.716 km SSE of Tres Pinos, California · 14181 days ago · 5 km deep · 56 km away
  29. 1.715 km SSE of Tres Pinos, California · 14181 days ago · 4 km deep · 56 km away
  30. 1.75 km ENE of Fremont, California · 14180 days ago · 11 km deep · 83 km away
  31. 2.221 km NE of Soledad, California · 14180 days ago · 2 km deep · 64 km away
  32. 1.525 km NE of Greenfield, California · 14180 days ago · 8 km deep · 78 km away
  33. 3.78 km ENE of Gilroy, California · 14180 days ago · 8 km deep · 32 km away
  34. 1.610 km E of East Foothills, California · 14179 days ago · 3 km deep · 54 km away
  35. 1.912 km NE of East Foothills, California · 14179 days ago · 7 km deep · 63 km away
  36. 1.915 km N of Morgan Hill, California · 14179 days ago · 6 km deep · 46 km away
  37. 1.66 km E of Tres Pinos, California · 14178 days ago · 7 km deep · 41 km away
  38. 1.711 km SW of Soledad, California · 14176 days ago · 11 km deep · 93 km away
  39. 1.811 km SW of Soledad, California · 14176 days ago · 13 km deep · 93 km away
  40. 1.725 km NE of San Lucas, California · 14176 days ago · 7 km deep · 97 km away
  41. 1.613 km NE of East Foothills, California · 14176 days ago · 8 km deep · 63 km away
  42. 2.213 km N of Morgan Hill, California · 14176 days ago · 3 km deep · 45 km away
  43. 1.9Central California · 14175 days ago · 6 km deep · 28 km away
  44. 1.914 km N of Morgan Hill, California · 14175 days ago · 6 km deep · 45 km away
  45. 1.621 km SSE of Tres Pinos, California · 14175 days ago · 4 km deep · 60 km away
  46. 1.526 km NE of San Lucas, California · 14175 days ago · 9 km deep · 97 km away
  47. 2.05 km SSE of Mendota, California · 14174 days ago · 5 km deep · 86 km away
  48. 2.812 km N of Morgan Hill, CA · 14173 days ago · 5 km deep · 44 km away
  49. 1.823 km SSW of Los Banos, California · 14172 days ago · 0 km deep · 37 km away
  50. 1.513 km N of Morgan Hill, California · 14170 days ago · 5 km deep · 45 km away
  51. 1.98 km ESE of East Foothills, California · 14169 days ago · 8 km deep · 56 km away
  52. 1.815 km SSE of Livermore, California · 14169 days ago · 6 km deep · 65 km away
  53. 1.74 km WSW of Cupertino, California · 14169 days ago · 8 km deep · 84 km away
  54. 1.718 km SSE of Livermore, California · 14169 days ago · 6 km deep · 63 km away
  55. 1.75 km NNE of Tres Pinos, California · 14167 days ago · 6 km deep · 37 km away
  56. 1.940 km ENE of Soledad, California · 14167 days ago · 5 km deep · 68 km away
  57. 1.812 km N of Morgan Hill, California · 14165 days ago · 6 km deep · 44 km away
  58. 1.66 km NE of Ridgemark, California · 14164 days ago · 5 km deep · 36 km away
  59. 2.411 km SSE of Livermore, California · 14164 days ago · 5 km deep · 69 km away
  60. 2.6Northern California · 14164 days ago · 5 km deep · 69 km away

The first 60 of 166.

Before

  1. 1.64 km ESE of Tres Pinos, California · 14191 days ago · 7 km deep · 44 km away
  2. 2.48 km SE of Alum Rock, California · 14192 days ago · 5 km deep · 56 km away
  3. 1.87 km ENE of Hollister, California · 14192 days ago · 7 km deep · 34 km away
  4. 2.35 km WSW of Gilroy, California · 14192 days ago · 3 km deep · 46 km away
  5. 1.516 km NE of East Foothills, California · 14192 days ago · 2 km deep · 60 km away
  6. 1.53 km WNW of Ridgemark, California · 14192 days ago · 7 km deep · 42 km away
  7. 1.5Central California · 14193 days ago · 8 km deep · 62 km away
  8. 1.822 km NE of Soledad, California · 14193 days ago · 8 km deep · 65 km away
  9. 1.824 km NE of Soledad, California · 14193 days ago · 8 km deep · 67 km away
  10. 1.611 km ESE of East Foothills, California · 14194 days ago · 7 km deep · 53 km away
  11. 2.321 km NE of Soledad, California · 14195 days ago · 6 km deep · 63 km away
  12. 2.015 km E of Seven Trees, California · 14196 days ago · 3 km deep · 48 km away
  13. 1.711 km SW of Soledad, California · 14196 days ago · 14 km deep · 92 km away
  14. 2.022 km NNE of Soledad, California · 14196 days ago · 2 km deep · 61 km away
  15. 2.717 km SSE of Tres Pinos, California · 14196 days ago · 8 km deep · 57 km away
  16. 1.721 km NNE of Soledad, California · 14196 days ago · 7 km deep · 62 km away
  17. 2.47 km NNE of Interlaken, California · 14196 days ago · 12 km deep · 52 km away
  18. 2.112 km SW of Soledad, California · 14197 days ago · 14 km deep · 93 km away
  19. 2.312 km SW of Soledad, California · 14197 days ago · 14 km deep · 93 km away
  20. 2.641 km ENE of Soledad, California · 14197 days ago · 5 km deep · 66 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc108763. Read Mon, Sep 28, 2026, 10:49 AM UTC.