California earthquakes

M1.6 earthquake 3km NE of Rialto, CA

A magnitude 1.6 earthquake struck 3km NE of Rialto, CA on Sun, Dec 13, 1987, 10:39 AM PST (18:39 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M4.7 2km WNW of El Monte, CA. This one was a foreshock.

Rialto 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
1.6 (Mc), micro
Magnitude from
Southern California Seismic Network
Local time
UTC
1987-12-13 18:39:36 UTC
Depth
10.0 km (6.2 mi), shallow
Epicenter
34.127° N, 117.352° 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
139°
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: 186 in the 60 days after this one and 161 in the 30 days before it.

After

  1. 2.212km E of Anza, CA · 14174 days ago · 15 km deep · 99 km away
  2. 2.37km NE of Aguanga, CA · 14174 days ago · 10 km deep · 87 km away
  3. 1.96km WSW of Beaumont, CA · 14173 days ago · 15 km deep · 38 km away
  4. 1.96km S of Redlands, CA · 14173 days ago · 15 km deep · 21 km away
  5. 2.515km NNW of Aguanga, CA · 14173 days ago · 12 km deep · 73 km away
  6. 1.822km NNW of Yucca Valley, CA · 14173 days ago · -1 km deep · 82 km away
  7. 2.02km E of Loma Linda, CA · 14173 days ago · 17 km deep · 14 km away
  8. 1.94km SSW of Morongo Valley, CA · 14172 days ago · 9 km deep · 71 km away
  9. 1.96km S of Beaumont, CA · 14172 days ago · 10 km deep · 44 km away
  10. 2.18km NE of Aguanga, CA · 14172 days ago · 6 km deep · 87 km away
  11. 2.38km NE of Aguanga, CA · 14172 days ago · 10 km deep · 87 km away
  12. 2.38km NE of Aguanga, CA · 14172 days ago · 9 km deep · 87 km away
  13. 1.99km NE of Aguanga, CA · 14172 days ago · 9 km deep · 87 km away
  14. 2.02km SW of Temple City, CA · 14172 days ago · 8 km deep · 66 km away
  15. 2.58km NNW of Fontana, CA · 14172 days ago · 5 km deep · 13 km away
  16. 2.12km SE of Rosemead, CA · 14172 days ago · 11 km deep · 66 km away
  17. 1.97km ESE of Valle Vista, CA · 14171 days ago · 19 km deep · 66 km away
  18. 2.08km NE of Aguanga, CA · 14171 days ago · 7 km deep · 87 km away
  19. 3.112km NE of Cabazon, CA · 14171 days ago · 7 km deep · 64 km away
  20. 2.31km ESE of Murrieta, CA · 14171 days ago · 5 km deep · 66 km away
  21. 2.08km NE of Aguanga, CA · 14171 days ago · 9 km deep · 87 km away
  22. 2.31km ESE of Murrieta, CA · 14171 days ago · 5 km deep · 66 km away
  23. 1.84km SSW of Morongo Valley, CA · 14170 days ago · 11 km deep · 71 km away
  24. 2.36km ESE of Valle Vista, CA · 14170 days ago · 16 km deep · 66 km away
  25. 2.44km N of Cabazon, CA · 14170 days ago · 16 km deep · 55 km away
  26. 2.75km NNW of Cabazon, CA · 14170 days ago · 15 km deep · 54 km away
  27. 1.92km NNE of Grand Terrace, CA · 14170 days ago · 18 km deep · 10 km away
  28. 2.28km NNE of Beaumont, CA · 14170 days ago · 8 km deep · 39 km away
  29. 2.010km NNW of Anza, CA · 14170 days ago · 14 km deep · 81 km away
  30. 1.814km S of Big Bear Lake, CA · 14169 days ago · 4 km deep · 40 km away
  31. 2.120km N of Joshua Tree, CA · 14169 days ago · 5 km deep · 95 km away
  32. 2.68km NNE of Yucca Valley, CA · 14169 days ago · 2 km deep · 87 km away
  33. 1.814km W of Morongo Valley, CA · 14169 days ago · 8 km deep · 59 km away
  34. 2.08km NNE of Yucca Valley, CA · 14169 days ago · 1 km deep · 87 km away
  35. 1.72km E of Anza, CA · 14169 days ago · 11 km deep · 91 km away
  36. 1.83km ESE of Monterey Park, CA · 14169 days ago · 13 km deep · 68 km away
  37. 2.24km WNW of Muscoy, CA · 14169 days ago · 13 km deep · 5 km away
  38. 2.621km NNW of Yucca Valley, CA · 14169 days ago · 2 km deep · 81 km away
  39. 2.12km NE of Murrieta, CA · 14169 days ago · 9 km deep · 64 km away
  40. 1.66km S of Yucca Valley, CA · 14168 days ago · 10 km deep · 85 km away
  41. 1.99km SE of San Pedro, CA · 14168 days ago · 2 km deep · 95 km away
  42. 2.27km NE of Aguanga, CA · 14168 days ago · 6 km deep · 87 km away
  43. 1.912km NNE of Cabazon, CA · 14168 days ago · 13 km deep · 56 km away
  44. 2.211km ENE of North Tustin, CA · 14167 days ago · 1 km deep · 47 km away
  45. 1.89km N of Anza, CA · 14167 days ago · 15 km deep · 84 km away
  46. 1.73km E of Idyllwild, CA · 14167 days ago · 15 km deep · 75 km away
  47. 2.27km NE of Aguanga, CA · 14166 days ago · 7 km deep · 87 km away
  48. 2.17km NE of Aguanga, CA · 14166 days ago · 6 km deep · 87 km away
  49. 2.17km NE of Aguanga, CA · 14166 days ago · 6 km deep · 87 km away
  50. 2.33km E of Idyllwild, CA · 14166 days ago · 15 km deep · 75 km away
  51. 2.18km W of Palomar Observatory, CA · 14166 days ago · 19 km deep · 94 km away
  52. 2.13km E of Idyllwild, CA · 14166 days ago · 14 km deep · 75 km away
  53. 1.69km SW of Morongo Valley, CA · 14166 days ago · 6 km deep · 67 km away
  54. 2.16km WNW of Palm Springs, CA · 14166 days ago · 12 km deep · 77 km away
  55. 1.96km W of Desert Hot Springs, CA · 14165 days ago · 5 km deep · 74 km away
  56. 1.92km W of San Bernardino, CA · 14164 days ago · 7 km deep · 3 km away
  57. 2.23km NNE of Fontana, CA · 14164 days ago · 4 km deep · 9 km away
  58. 1.83km NE of Running Springs, CA · 14164 days ago · 1 km deep · 27 km away
  59. 1.93km SE of Colton, CA · 14164 days ago · 16 km deep · 9 km away
  60. 2.52km E of Monterey Park, CA · 14163 days ago · 10 km deep · 69 km away

The first 60 of 186.

Before

  1. 2.17km NW of Aguanga, CA · 14175 days ago · 5 km deep · 82 km away
  2. 2.212km N of Trabuco Canyon, CA · 14175 days ago · 2 km deep · 45 km away
  3. 2.014km S of Big Bear Lake, CA · 14175 days ago · 4 km deep · 39 km away
  4. 1.99km ENE of Cabazon, CA · 14176 days ago · 15 km deep · 64 km away
  5. 2.57km W of Palomar Observatory, CA · 14176 days ago · 5 km deep · 93 km away
  6. 2.19km SE of Valle Vista, CA · 14176 days ago · 17 km deep · 68 km away
  7. 2.121km NNW of Yucca Valley, CA · 14176 days ago · 2 km deep · 81 km away
  8. 2.28km NNW of Cabazon, CA · 14177 days ago · 15 km deep · 51 km away
  9. 1.66km E of Running Springs, CA · 14177 days ago · 0 km deep · 30 km away
  10. 1.914km S of Big Bear Lake, CA · 14177 days ago · 4 km deep · 39 km away
  11. 2.18km SSW of Morongo Valley, CA · 14177 days ago · 7 km deep · 68 km away
  12. 1.67km NE of Moreno Valley, CA · 14177 days ago · 16 km deep · 24 km away
  13. 2.28km NE of Aguanga, CA · 14177 days ago · 10 km deep · 87 km away
  14. 1.97km WNW of Garnet, CA · 14177 days ago · 11 km deep · 71 km away
  15. 2.09km NE of Aguanga, CA · 14177 days ago · 9 km deep · 87 km away
  16. 1.82km NE of Montebello, CA · 14177 days ago · 12 km deep · 69 km away
  17. 2.010km NW of Garnet, CA · 14177 days ago · 12 km deep · 70 km away
  18. 1.84km SSE of Loma Linda, CA · 14178 days ago · 17 km deep · 16 km away
  19. 2.710km SSW of Idyllwild, CA · 14179 days ago · 14 km deep · 76 km away
  20. 1.93km SE of Monterey Park, CA · 14179 days ago · 13 km deep · 70 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ci738821. Read Sun, Oct 4, 2026, 3:00 AM UTC.