California earthquakes

M1.8 earthquake 19km N of Avalon, CA

A magnitude 1.8 earthquake struck 19km N of Avalon, CA on Wed, Sep 23, 1987, 10:42 PM PDT (05:42 UTC), 9 km (5 mi) below the surface.

A larger quake followed: M5.9 The 1987 Whittier Narrows, California Earthquake. This one was a foreshock.

Avalon forecastMore in California

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Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude
1.8 (Mc), micro
Magnitude from
Southern California Seismic Network
Local time
UTC
1987-09-24 05:42:11 UTC
Depth
8.8 km (5.5 mi), shallow
Epicenter
33.509° N, 118.350° 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
126°
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: 196 in the 60 days after this one and 62 in the 30 days before it.

After

  1. 1.82km N of Diamond Bar, CA · 14256 days ago · 16 km deep · 78 km away
  2. 2.510km S of Malibu, CA · 14255 days ago · 6 km deep · 62 km away
  3. 2.643km WSW of Carlsbad, CA · 14255 days ago · 6 km deep · 82 km away
  4. 2.21km SE of San Joaquin Hills, CA · 14254 days ago · 1 km deep · 49 km away
  5. 2.823km W of San Clemente Is. (NW tip), CA · 14253 days ago · 6 km deep · 73 km away
  6. 1.84km WSW of Malibu Beach, CA · 14253 days ago · 11 km deep · 66 km away
  7. 2.642km WSW of Carlsbad, CA · 14253 days ago · 6 km deep · 80 km away
  8. 2.310km NNE of Bradbury, CA · 14253 days ago · 5 km deep · 89 km away
  9. 2.741km WSW of Encinitas, CA · 14252 days ago · 6 km deep · 84 km away
  10. 2.18km WSW of Corona, CA · 14251 days ago · 5 km deep · 75 km away
  11. 2.946km WSW of Carlsbad, CA · 14250 days ago · 6 km deep · 78 km away
  12. 2.646km WSW of Carlsbad, CA · 14250 days ago · 6 km deep · 81 km away
  13. 2.339km WSW of Carlsbad, CA · 14250 days ago · 6 km deep · 77 km away
  14. 1.63km ENE of Villa Park, CA · 14250 days ago · 5 km deep · 63 km away
  15. 1.55km N of Malibu Beach, CA · 14249 days ago · 5 km deep · 70 km away
  16. 2.02km SW of Manhattan Beach, CA · 14248 days ago · 6 km deep · 41 km away
  17. 5.9The 1987 Whittier Narrows, California Earthquake · 14248 days ago · 15 km deep · 66 km away · felt by 823
  18. 3.62km SSW of Rosemead, CA · 14248 days ago · 9 km deep · 67 km away
  19. 4.73km SE of Monterey Park, CA · 14248 days ago · 13 km deep · 64 km away
  20. 4.12km WSW of Rosemead, CA · 14248 days ago · 11 km deep · 67 km away
  21. 3.53km W of South El Monte, CA · 14248 days ago · 10 km deep · 65 km away
  22. 4.82km E of Monterey Park, CA · 14248 days ago · 11 km deep · 65 km away
  23. 3.71km W of Rosemead, CA · 14248 days ago · 12 km deep · 68 km away
  24. 3.12km ESE of Rosemead, CA · 14248 days ago · 14 km deep · 69 km away
  25. 2.32km W of Rosemead, CA · 14248 days ago · 10 km deep · 68 km away
  26. 2.52km WNW of South El Monte, CA · 14248 days ago · 10 km deep · 66 km away
  27. 2.63km NE of Montebello, CA · 14248 days ago · 12 km deep · 63 km away
  28. 1.82km WSW of Rosemead, CA · 14248 days ago · 14 km deep · 67 km away
  29. 2.31km WSW of South El Monte, CA · 14248 days ago · 13 km deep · 66 km away
  30. 2.23km NNE of Montebello, CA · 14248 days ago · 12 km deep · 63 km away
  31. 1.92km SSW of Rosemead, CA · 14248 days ago · 10 km deep · 67 km away
  32. 1.72km SSW of Rosemead, CA · 14248 days ago · 10 km deep · 67 km away
  33. 2.12km SSW of Rosemead, CA · 14248 days ago · 9 km deep · 67 km away
  34. 2.12km WNW of El Monte, CA · 14248 days ago · 9 km deep · 70 km away
  35. 3.03km SW of Rosemead, CA · 14248 days ago · 11 km deep · 66 km away
  36. 2.32km SW of South El Monte, CA · 14248 days ago · 9 km deep · 64 km away
  37. 3.34km WSW of South El Monte, CA · 14248 days ago · 9 km deep · 64 km away
  38. 1.92km SSW of Rosemead, CA · 14248 days ago · 10 km deep · 67 km away
  39. 4.63km ESE of Monterey Park, CA · 14248 days ago · 10 km deep · 65 km away
  40. 3.23km ESE of Monterey Park, CA · 14248 days ago · 9 km deep · 65 km away
  41. 3.11km ENE of Temple City, CA · 14248 days ago · 10 km deep · 73 km away
  42. 2.50km NNW of Monterey Park, CA · 14248 days ago · 9 km deep · 65 km away
  43. 1.82km SSW of Rosemead, CA · 14248 days ago · 10 km deep · 67 km away
  44. 3.43km ESE of Monterey Park, CA · 14248 days ago · 12 km deep · 65 km away
  45. 2.52km E of Monterey Park, CA · 14248 days ago · 15 km deep · 66 km away
  46. 3.22km NNW of South El Monte, CA · 14248 days ago · 9 km deep · 68 km away
  47. 3.33km WSW of South El Monte, CA · 14248 days ago · 10 km deep · 65 km away
  48. 2.21km NNW of Montebello, CA · 14248 days ago · 9 km deep · 61 km away
  49. 2.92km NNW of South El Monte, CA · 14248 days ago · 9 km deep · 67 km away
  50. 2.23km ESE of East Los Angeles, CA · 14248 days ago · 9 km deep · 60 km away
  51. 2.13km NE of Montebello, CA · 14248 days ago · 9 km deep · 63 km away
  52. 3.23km E of Monterey Park, CA · 14248 days ago · 10 km deep · 66 km away
  53. 2.31km SW of Rosemead, CA · 14248 days ago · 12 km deep · 67 km away
  54. 2.02km E of Rosemead, CA · 14248 days ago · 9 km deep · 69 km away
  55. 3.02km ESE of Monterey Park, CA · 14248 days ago · 14 km deep · 65 km away
  56. 2.02km ESE of Monterey Park, CA · 14248 days ago · 14 km deep · 65 km away
  57. 2.42km S of Rosemead, CA · 14248 days ago · 14 km deep · 67 km away
  58. 2.62km WSW of South El Monte, CA · 14248 days ago · 5 km deep · 65 km away
  59. 2.03km W of South El Monte, CA · 14248 days ago · 11 km deep · 65 km away
  60. 2.43km NNE of Montebello, CA · 14248 days ago · 10 km deep · 63 km away

The first 60 of 196.

Before

  1. 2.011km E of Yorba Linda, CA · 14256 days ago · 2 km deep · 74 km away
  2. 2.841km WSW of Carlsbad, CA · 14256 days ago · 6 km deep · 80 km away
  3. 1.77km WSW of Malibu, CA · 14256 days ago · 14 km deep · 72 km away
  4. 2.02km NE of Artesia, CA · 14257 days ago · 16 km deep · 49 km away
  5. 2.17km ENE of Villa Park, CA · 14257 days ago · 2 km deep · 67 km away
  6. 2.747km WSW of Carlsbad, CA · 14257 days ago · 5 km deep · 79 km away
  7. 2.838km WSW of Carlsbad, CA · 14258 days ago · 6 km deep · 82 km away
  8. 2.35km NNW of Glen Avon, CA · 14258 days ago · 5 km deep · 99 km away
  9. 1.84km SSW of Santa Monica, CA · 14258 days ago · 6 km deep · 55 km away
  10. 2.48km ENE of Villa Park, CA · 14258 days ago · 3 km deep · 68 km away
  11. 2.741km WSW of Encinitas, CA · 14259 days ago · 6 km deep · 86 km away
  12. 2.54km SW of Santa Monica, CA · 14260 days ago · 6 km deep · 56 km away
  13. 2.646km WSW of Carlsbad, CA · 14260 days ago · 6 km deep · 78 km away
  14. 2.546km WSW of Carlsbad, CA · 14261 days ago · 6 km deep · 81 km away
  15. 2.544km WSW of Carlsbad, CA · 14261 days ago · 5 km deep · 83 km away
  16. 2.03km SW of Santa Monica, CA · 14261 days ago · 6 km deep · 56 km away
  17. 2.35km SSE of Malibu Beach, CA · 14261 days ago · 14 km deep · 61 km away
  18. 1.85km SSE of Malibu Beach, CA · 14261 days ago · 14 km deep · 61 km away
  19. 2.647km WSW of Carlsbad, CA · 14263 days ago · 6 km deep · 81 km away
  20. 2.948km WSW of Carlsbad, CA · 14265 days ago · 4 km deep · 78 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ci623935. Read Sun, Oct 4, 2026, 8:55 PM UTC.