California earthquakes

M2.5 earthquake 17km ESE of Anza, CA

A magnitude 2.5 earthquake struck 17km ESE of Anza, CA on Sat, Oct 31, 1987, 8:30 AM PST (16:30 UTC), 14 km (8 mi) below the surface.

A larger quake followed: M6.6 The 1987 Superstition Hills, California Earthquake. This one was a foreshock.

Anza 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
2.5 (Mc), micro
Magnitude from
Southern California Seismic Network
Local time
UTC
1987-10-31 16:30:03 UTC
Depth
13.6 km (8.4 mi), shallow
Epicenter
33.480° N, 116.515° 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.

Depth from
From location
Station coverage gap
33°
Stations used
0

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 193 in the 60 days after this one and 185 in the 30 days before it.

After

  1. 2.317km ESE of Anza, CA · 14218 days ago · 14 km deep · 1 km away
  2. 1.817km ESE of Anza, CA · 14218 days ago · 14 km deep · 0 km away
  3. 2.012km NNE of Cabazon, CA · 14218 days ago · 10 km deep · 62 km away
  4. 2.119km N of Borrego Springs, CA · 14217 days ago · 12 km deep · 16 km away
  5. 1.53km ESE of Colton, CA · 14217 days ago · 17 km deep · 97 km away
  6. 2.023km SSW of La Quinta, CA · 14217 days ago · 12 km deep · 9 km away
  7. 1.713km WNW of Anza, CA · 14217 days ago · 7 km deep · 30 km away
  8. 1.95km N of Beaumont, CA · 14217 days ago · 14 km deep · 70 km away
  9. 1.511km WSW of Morongo Valley, CA · 14217 days ago · 9 km deep · 61 km away
  10. 1.911km NNW of Borrego Springs, CA · 14217 days ago · 10 km deep · 18 km away
  11. 2.022km SSW of La Quinta, CA · 14217 days ago · 5 km deep · 10 km away
  12. 1.63km SE of Loma Linda, CA · 14217 days ago · 16 km deep · 90 km away
  13. 2.47km N of Cabazon, CA · 14217 days ago · 17 km deep · 61 km away
  14. 2.114km SE of Ocotillo Wells, CA · 14216 days ago · 6 km deep · 65 km away
  15. 1.57km WSW of Beaumont, CA · 14216 days ago · 16 km deep · 68 km away
  16. 2.217km SE of Ocotillo Wells, CA · 14216 days ago · 20 km deep · 69 km away
  17. 2.110km NNE of Borrego Springs, CA · 14216 days ago · 12 km deep · 22 km away
  18. 2.218km SSW of Oasis, CA · 14216 days ago · 5 km deep · 37 km away
  19. 2.314km SE of Anza, CA · 14216 days ago · 11 km deep · 3 km away
  20. 2.116km NNE of Indio, CA · 14215 days ago · 9 km deep · 53 km away
  21. 2.05km W of Idyllwild, CA · 14215 days ago · 16 km deep · 37 km away
  22. 2.521km ENE of Pine Valley, CA · 14215 days ago · 10 km deep · 65 km away
  23. 2.114km NNE of Borrego Springs, CA · 14215 days ago · 2 km deep · 22 km away
  24. 2.14km SSE of Idyllwild, CA · 14215 days ago · 16 km deep · 31 km away
  25. 2.119km ESE of Anza, CA · 14215 days ago · 14 km deep · 5 km away
  26. 1.823km N of Borrego Springs, CA · 14215 days ago · 12 km deep · 11 km away
  27. 1.821km ENE of Pine Valley, CA · 14215 days ago · 10 km deep · 65 km away
  28. 2.05km S of Morongo Valley, CA · 14215 days ago · 10 km deep · 59 km away
  29. 2.012km WSW of Salton City, CA · 14214 days ago · 0 km deep · 48 km away
  30. 2.112km SSE of Joshua Tree, CA · 14214 days ago · 6 km deep · 67 km away
  31. 1.910km E of Cabazon, CA · 14214 days ago · 4 km deep · 52 km away
  32. 2.38km NW of Aguanga, CA · 14214 days ago · 9 km deep · 37 km away
  33. 2.217km NNE of Borrego Springs, CA · 14214 days ago · 11 km deep · 24 km away
  34. 1.612km N of Cabazon, CA · 14213 days ago · 16 km deep · 66 km away
  35. 2.312km ENE of Desert Hot Springs, CA · 14213 days ago · 5 km deep · 58 km away
  36. 2.021km ESE of Anza, CA · 14213 days ago · 8 km deep · 7 km away
  37. 1.73km NNW of Loma Linda, CA · 14212 days ago · 18 km deep · 96 km away
  38. 2.915km NNW of Aguanga, CA · 14212 days ago · 11 km deep · 40 km away
  39. 2.08km S of Idyllwild, CA · 14212 days ago · 15 km deep · 28 km away
  40. 1.713km SSE of Joshua Tree, CA · 14212 days ago · 6 km deep · 66 km away
  41. 1.64km SE of Loma Linda, CA · 14211 days ago · 16 km deep · 90 km away
  42. 2.014km WNW of Anza, CA · 14210 days ago · 4 km deep · 30 km away
  43. 2.19km WSW of Morongo Valley, CA · 14210 days ago · 11 km deep · 63 km away
  44. 2.24km S of Idyllwild, CA · 14210 days ago · 20 km deep · 31 km away
  45. 2.22km S of Rubidoux, CA · 14210 days ago · 15 km deep · 99 km away
  46. 1.712km WSW of Morongo Valley, CA · 14210 days ago · 8 km deep · 60 km away
  47. 1.710km N of Cabazon, CA · 14210 days ago · 16 km deep · 64 km away
  48. 1.65km SE of Loma Linda, CA · 14210 days ago · 17 km deep · 88 km away
  49. 1.924km SW of Ocotillo Wells, CA · 14210 days ago · 9 km deep · 55 km away
  50. 1.912km N of Borrego Springs, CA · 14210 days ago · 12 km deep · 17 km away
  51. 2.112km NE of Ocotillo Wells, CA · 14209 days ago · 10 km deep · 52 km away
  52. 2.31km NW of Julian, CA · 14209 days ago · 13 km deep · 45 km away
  53. 1.612km ENE of Desert Hot Springs, CA · 14209 days ago · 4 km deep · 58 km away
  54. 2.16km S of Salton City, CA · 14209 days ago · 4 km deep · 58 km away
  55. 2.27km SSE of Big Bear City, CA · 14209 days ago · 6 km deep · 85 km away
  56. 2.221km N of Joshua Tree, CA · 14209 days ago · 5 km deep · 95 km away
  57. 2.120km N of Joshua Tree, CA · 14209 days ago · 5 km deep · 94 km away
  58. 1.98km S of Redlands, CA · 14209 days ago · 18 km deep · 83 km away
  59. 2.08km SW of Niland, CA · 14208 days ago · 5 km deep · 92 km away
  60. 2.28km SW of Niland, CA · 14208 days ago · 3 km deep · 92 km away

The first 60 of 193.

Before

  1. 2.117km ESE of Anza, CA · 14218 days ago · 15 km deep · 1 km away
  2. 2.17km NE of Desert Hot Springs, CA · 14218 days ago · 5 km deep · 58 km away
  3. 1.71km W of Loma Linda, CA · 14218 days ago · 16 km deep · 94 km away
  4. 1.97km WSW of Morongo Valley, CA · 14218 days ago · 13 km deep · 62 km away
  5. 2.28km N of Aguanga, CA · 14218 days ago · 7 km deep · 34 km away
  6. 1.81km W of Loma Linda, CA · 14218 days ago · 16 km deep · 94 km away
  7. 1.96km SE of Aguanga, CA · 14218 days ago · 5 km deep · 30 km away
  8. 1.65km SE of Yucca Valley, CA · 14219 days ago · 3 km deep · 68 km away
  9. 2.514km NW of Aguanga, CA · 14219 days ago · 8 km deep · 44 km away
  10. 1.920km ESE of Anza, CA · 14219 days ago · 14 km deep · 3 km away
  11. 1.94km SE of Yucaipa, CA · 14219 days ago · 17 km deep · 75 km away
  12. 1.74km ESE of Murrieta Hot Springs, CA · 14219 days ago · 3 km deep · 56 km away
  13. 1.89km NNE of Banning, CA · 14220 days ago · 18 km deep · 66 km away
  14. 1.911km N of Borrego Springs, CA · 14220 days ago · 11 km deep · 20 km away
  15. 2.29km WNW of Palomar Observatory, CA · 14220 days ago · 3 km deep · 42 km away
  16. 1.96km S of Morongo Valley, CA · 14220 days ago · 10 km deep · 57 km away
  17. 2.425km NW of Ocotillo, CA · 14220 days ago · 5 km deep · 73 km away
  18. 2.14km ENE of Banning, CA · 14220 days ago · 6 km deep · 59 km away
  19. 1.94km N of Cabazon, CA · 14220 days ago · 12 km deep · 58 km away
  20. 2.219km N of Borrego Springs, CA · 14221 days ago · 12 km deep · 16 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ci734091. Read Sun, Oct 4, 2026, 5:01 PM UTC.