California earthquakes

M1.5 earthquake 5 km SW of Gilroy, California

A magnitude 1.5 earthquake struck 5 km SW of Gilroy, California on Tue, Oct 27, 1987, 7:18 PM PST (03:18 UTC), 3 km (2 mi) below the surface.

A larger quake followed: M4.0 21 km NNE of Soledad, 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.

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The earthquake

Magnitude
1.5 (md), micro
Local time
UTC
1987-10-28 03:18:46 UTC
Depth
2.6 km (1.6 mi), shallow
Epicenter
36.968° N, 121.604° 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, 0.6 km in depth
Magnitude uncertainty
±0.16
Depth from
From location
Station coverage gap
42°
Stations used
31

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 170 in the 60 days after this one and 57 in the 30 days before it.

After

  1. 3.210 km S of Tres Pinos, California · 14217 days ago · 3 km deep · 40 km away
  2. 1.726 km ENE of Soledad, California · 14217 days ago · 7 km deep · 65 km away
  3. 2.122 km WSW of Greenfield, California · 14217 days ago · 13 km deep · 84 km away
  4. 2.02 km SSE of Alum Rock, California · 14217 days ago · 7 km deep · 46 km away
  5. 3.322 km NNE of Soledad, California · 14217 days ago · 9 km deep · 54 km away
  6. 1.522 km NNE of Soledad, California · 14217 days ago · 8 km deep · 54 km away
  7. 2.511 km ESE of East Foothills, California · 14214 days ago · 8 km deep · 42 km away
  8. 2.38 km N of East Foothills, California · 14214 days ago · 6 km deep · 57 km away
  9. 1.822 km NE of Soledad, California · 14214 days ago · 4 km deep · 57 km away
  10. 1.526 km NE of Greenfield, California · 14213 days ago · 7 km deep · 77 km away
  11. 1.618 km SSE of Tres Pinos, California · 14213 days ago · 8 km deep · 49 km away
  12. 3.215 km E of Seven Trees, California · 14213 days ago · 6 km deep · 36 km away
  13. 1.615 km E of Seven Trees, California · 14213 days ago · 5 km deep · 36 km away
  14. 1.615 km E of Seven Trees, California · 14212 days ago · 5 km deep · 36 km away
  15. 1.61 km NNW of Cambrian Park, California · 14212 days ago · 4 km deep · 45 km away
  16. 1.67 km N of East Foothills, California · 14212 days ago · 8 km deep · 57 km away
  17. 2.06 km ENE of Hollister, California · 14212 days ago · 7 km deep · 25 km away
  18. 3.14 km SW of Tres Pinos, California · 14212 days ago · 7 km deep · 31 km away
  19. 1.811 km S of Tres Pinos, California · 14211 days ago · 3 km deep · 40 km away
  20. 1.62 km NNW of Hollister, California · 14211 days ago · 7 km deep · 20 km away
  21. 2.0Northern California · 14210 days ago · 5 km deep · 97 km away
  22. 1.65 km SSW of Gilroy, California · 14210 days ago · 4 km deep · 1 km away
  23. 1.621 km NNE of Soledad, California · 14210 days ago · 8 km deep · 54 km away
  24. 2.86 km ENE of Hollister, California · 14210 days ago · 8 km deep · 25 km away
  25. 1.611 km SW of Soledad, California · 14209 days ago · 12 km deep · 72 km away
  26. 1.56 km ENE of Hollister, California · 14208 days ago · 7 km deep · 25 km away
  27. 1.510 km ESE of Gilroy, California · 14207 days ago · 4 km deep · 13 km away
  28. 2.713 km ENE of East Foothills, California · 14207 days ago · 4 km deep · 50 km away
  29. 2.112 km NNE of East Foothills, California · 14207 days ago · 7 km deep · 58 km away
  30. 4.021 km NNE of Soledad, California · 14207 days ago · 9 km deep · 55 km away
  31. 1.921 km NNE of Soledad, California · 14207 days ago · 7 km deep · 55 km away
  32. 2.421 km NNE of Soledad, California · 14207 days ago · 7 km deep · 55 km away
  33. 1.63 km ENE of Redwood Shores, California · 14207 days ago · 5 km deep · 83 km away
  34. 1.85 km SE of Tres Pinos, California · 14207 days ago · 7 km deep · 37 km away
  35. 2.421 km NNE of Soledad, California · 14206 days ago · 7 km deep · 55 km away
  36. 1.85 km NNE of Tres Pinos, California · 14206 days ago · 4 km deep · 31 km away
  37. 2.06 km E of East Foothills, California · 14205 days ago · 6 km deep · 48 km away
  38. 1.67 km NNE of East Foothills, California · 14205 days ago · 7 km deep · 56 km away
  39. 2.16 km NE of East Foothills, California · 14204 days ago · 7 km deep · 52 km away
  40. 1.96 km ENE of Hollister, California · 14203 days ago · 5 km deep · 26 km away
  41. 1.68 km WNW of Davenport, California · 14202 days ago · 9 km deep · 60 km away
  42. 1.521 km NE of Soledad, California · 14202 days ago · 8 km deep · 63 km away
  43. 1.56 km NE of Ridgemark, California · 14202 days ago · 4 km deep · 29 km away
  44. 2.521 km NNE of Soledad, California · 14202 days ago · 8 km deep · 54 km away
  45. 1.98 km NE of Ridgemark, California · 14201 days ago · 6 km deep · 28 km away
  46. 1.614 km E of Seven Trees, California · 14200 days ago · 2 km deep · 37 km away
  47. 2.410 km SSW of Loyola, California · 14199 days ago · 6 km deep · 58 km away
  48. 2.811 km SW of Soledad, California · 14199 days ago · 13 km deep · 72 km away
  49. 1.811 km SW of Soledad, California · 14199 days ago · 13 km deep · 71 km away
  50. 2.56 km ENE of Hollister, California · 14199 days ago · 7 km deep · 25 km away
  51. 1.56 km ENE of Hollister, California · 14199 days ago · 7 km deep · 26 km away
  52. 2.641 km ENE of Soledad, California · 14199 days ago · 5 km deep · 75 km away
  53. 2.312 km SW of Soledad, California · 14199 days ago · 14 km deep · 72 km away
  54. 2.112 km SW of Soledad, California · 14199 days ago · 14 km deep · 73 km away
  55. 2.47 km NNE of Interlaken, California · 14198 days ago · 12 km deep · 11 km away
  56. 1.721 km NNE of Soledad, California · 14198 days ago · 7 km deep · 55 km away
  57. 2.717 km SSE of Tres Pinos, California · 14198 days ago · 8 km deep · 47 km away
  58. 2.022 km NNE of Soledad, California · 14198 days ago · 2 km deep · 54 km away
  59. 1.711 km SW of Soledad, California · 14198 days ago · 14 km deep · 70 km away
  60. 2.015 km E of Seven Trees, California · 14198 days ago · 3 km deep · 36 km away

The first 60 of 170.

Before

  1. 1.85 km SE of Tres Pinos, California · 14218 days ago · 9 km deep · 38 km away
  2. 2.215 km N of Morgan Hill, CA · 14218 days ago · 3 km deep · 33 km away
  3. 1.66 km N of East Foothills, California · 14219 days ago · 1 km deep · 55 km away
  4. 1.636 km ESE of Tres Pinos, California · 14219 days ago · 0 km deep · 67 km away
  5. 1.8Central California · 14219 days ago · 9 km deep · 49 km away
  6. 1.68 km SE of Los Banos, California · 14219 days ago · 4 km deep · 73 km away
  7. 1.80 km E of Ashland, California · 14220 days ago · 4 km deep · 92 km away
  8. 1.65 km SW of Gilroy, California · 14221 days ago · 4 km deep · 2 km away
  9. 2.018 km NE of East Foothills, California · 14222 days ago · 5 km deep · 60 km away
  10. 1.614 km E of Seven Trees, California · 14222 days ago · 2 km deep · 36 km away
  11. 1.67 km W of Gilroy, California · 14222 days ago · 6 km deep · 5 km away
  12. 1.65 km SE of Tres Pinos, California · 14223 days ago · 7 km deep · 37 km away
  13. 4.412 km N of Livermore, California · 14223 days ago · 10 km deep · 92 km away
  14. 1.521 km SSE of Tres Pinos, California · 14226 days ago · 6 km deep · 52 km away
  15. 1.621 km SSE of Tres Pinos, California · 14227 days ago · 6 km deep · 52 km away
  16. 1.621 km NE of Soledad, California · 14227 days ago · 8 km deep · 63 km away
  17. 2.821 km NE of Soledad, California · 14227 days ago · 9 km deep · 63 km away
  18. 2.918 km SSE of Livermore, California · 14227 days ago · 7 km deep · 63 km away
  19. 1.79 km E of San Martin, California · 14228 days ago · 9 km deep · 17 km away
  20. 2.04 km SE of Aromas, California · 14228 days ago · 7 km deep · 11 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc107749. Read Wed, Sep 30, 2026, 11:12 AM UTC.