California earthquakes

M1.6 earthquake Central California

A magnitude 1.6 earthquake struck in Central California on Sun, Jun 21, 1987, 8:46 PM PDT (03:46 UTC), 7 km (4 mi) below the surface.

A larger quake followed: M2.9 7 km NNE of Coalinga, California. This one was a foreshock.

Avenal 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 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
1987-06-22 03:46:48 UTC
Depth
6.8 km (4.3 mi), shallow
Epicenter
36.088° N, 120.203° 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 0.3 km horizontally, 0.7 km in depth
Magnitude uncertainty
±0.09
Depth from
From location
Station coverage gap
79°
Stations used
23

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 90 in the 60 days after this one and 42 in the 30 days before it.

After

  1. 2.912 km NNW of Avenal, California · 14345 days ago · 9 km deep · 3 km away
  2. 2.212 km SW of Huron, California · 14345 days ago · 7 km deep · 3 km away
  3. 2.012 km N of Coalinga, California · 14345 days ago · 10 km deep · 24 km away
  4. 1.840 km ESE of Tres Pinos, California · 14345 days ago · 5 km deep · 88 km away
  5. 2.128 km NW of Coalinga, California · 14345 days ago · 14 km deep · 43 km away
  6. 1.83 km SE of Avenal, California · 14345 days ago · 15 km deep · 15 km away
  7. 1.82 km SSE of Avenal, California · 14344 days ago · 13 km deep · 14 km away
  8. 2.214 km NNE of Coalinga, California · 14344 days ago · 8 km deep · 22 km away
  9. 1.614 km W of Coalinga, California · 14344 days ago · 10 km deep · 29 km away
  10. 1.517 km NNW of Coalinga, California · 14344 days ago · 10 km deep · 30 km away
  11. 2.111 km SW of Huron, California · 14342 days ago · 10 km deep · 4 km away
  12. 2.56 km ESE of La Vina, California · 14341 days ago · 9 km deep · 87 km away
  13. 1.57 km SSW of Avenal, California · 14340 days ago · 12 km deep · 16 km away
  14. 1.72 km ENE of San Ardo, California · 14336 days ago · 10 km deep · 61 km away
  15. 1.624 km NNE of King City, California · 14336 days ago · 5 km deep · 79 km away
  16. 1.623 km NE of King City, California · 14334 days ago · 5 km deep · 77 km away
  17. 1.627 km NE of Soledad, California · 14333 days ago · 9 km deep · 94 km away
  18. 2.023 km NE of King City, California · 14333 days ago · 4 km deep · 72 km away
  19. 1.83km S of Kettleman City, CA · 14332 days ago · 5 km deep · 25 km away
  20. 1.90 km SSE of Avenal, California · 14332 days ago · 20 km deep · 12 km away
  21. 2.59 km WSW of Atascadero, California · 14331 days ago · 4 km deep · 86 km away
  22. 1.91 km SSW of Avenal, California · 14330 days ago · 18 km deep · 12 km away
  23. 2.57 km SE of Parkfield, California · 14329 days ago · 4 km deep · 32 km away
  24. 2.211 km SSW of Huron, California · 14329 days ago · 8 km deep · 6 km away
  25. 1.922 km NE of San Lucas, California · 14328 days ago · 7 km deep · 62 km away
  26. 1.522 km NE of Soledad, California · 14328 days ago · 2 km deep · 96 km away
  27. 1.924 km ENE of Greenfield, California · 14327 days ago · 5 km deep · 82 km away
  28. 1.923 km ENE of Soledad, California · 14327 days ago · 5 km deep · 90 km away
  29. 2.417 km NNW of Coalinga, California · 14326 days ago · 10 km deep · 30 km away
  30. 1.617 km NNW of Coalinga, California · 14326 days ago · 8 km deep · 30 km away
  31. 1.94 km N of Avenal, California · 14325 days ago · 15 km deep · 8 km away
  32. 1.73 km NW of Avenal, California · 14325 days ago · 12 km deep · 8 km away
  33. 2.54 km NW of Avenal, California · 14325 days ago · 12 km deep · 7 km away
  34. 1.724 km NE of Greenfield, California · 14325 days ago · 0 km deep · 83 km away
  35. 2.04 km NNE of Coalinga, California · 14323 days ago · 13 km deep · 17 km away
  36. 1.64 km NW of Parkfield, California · 14320 days ago · 4 km deep · 31 km away
  37. 1.87 km E of Coalinga, California · 14317 days ago · 5 km deep · 10 km away
  38. 1.924 km ENE of Soledad, California · 14317 days ago · 2 km deep · 90 km away
  39. 2.311 km NE of Avenal, California · 14317 days ago · 8 km deep · 14 km away
  40. 1.621 km NE of Soledad, California · 14315 days ago · 3 km deep · 100 km away
  41. 1.724 km NE of King City, California · 14315 days ago · 5 km deep · 71 km away
  42. 2.81 km SSE of Oak Shores, California · 14315 days ago · 7 km deep · 79 km away
  43. 1.822 km NE of Shandon, California · 14314 days ago · 7 km deep · 32 km away
  44. 1.94 km NE of Coalinga, California · 14314 days ago · 11 km deep · 14 km away
  45. 2.0Central California · 14313 days ago · 4 km deep · 22 km away
  46. 1.69 km NNE of Lockwood, California · 14312 days ago · 11 km deep · 75 km away
  47. 2.49 km NE of Coalinga, California · 14312 days ago · 2 km deep · 14 km away
  48. 1.617 km NNW of Coalinga, California · 14311 days ago · 11 km deep · 29 km away
  49. 1.71 km SSE of Oak Shores, California · 14311 days ago · 7 km deep · 79 km away
  50. 1.618 km NW of Coalinga, California · 14309 days ago · 7 km deep · 32 km away
  51. 1.918 km NW of Coalinga, California · 14309 days ago · 7 km deep · 32 km away
  52. 1.71 km SSE of Oak Shores, California · 14308 days ago · 7 km deep · 79 km away
  53. 2.29 km N of Coalinga, California · 14307 days ago · 10 km deep · 21 km away
  54. 2.45 km NNE of Coalinga, California · 14305 days ago · 14 km deep · 17 km away
  55. 1.517 km N of Coalinga, California · 14305 days ago · 10 km deep · 28 km away
  56. 1.813 km N of Coalinga, California · 14305 days ago · 10 km deep · 24 km away
  57. 1.724 km NE of Greenfield, California · 14304 days ago · 7 km deep · 88 km away
  58. 1.921 km NE of Soledad, California · 14303 days ago · 6 km deep · 100 km away
  59. 1.52 km S of Oak Shores, California · 14303 days ago · 7 km deep · 79 km away
  60. 2.97 km NNE of Coalinga, California · 14303 days ago · 11 km deep · 17 km away

The first 60 of 90.

Before

  1. 3.211 km NW of Coalinga, California · 14347 days ago · 7 km deep · 26 km away
  2. 2.424 km ENE of Soledad, California · 14350 days ago · 3 km deep · 90 km away
  3. 1.65 km W of Cayucos, California · 14350 days ago · 4 km deep · 98 km away
  4. 1.523 km NNE of San Lucas, California · 14350 days ago · 4 km deep · 67 km away
  5. 1.82 km W of Avenal, California · 14354 days ago · 15 km deep · 10 km away
  6. 1.93 km W of Avenal, California · 14354 days ago · 17 km deep · 10 km away
  7. 1.71 km W of Avenal, California · 14354 days ago · 17 km deep · 11 km away
  8. 1.524 km NE of Greenfield, California · 14355 days ago · 5 km deep · 86 km away
  9. 2.215 km NNW of Coalinga, California · 14356 days ago · 11 km deep · 28 km away
  10. 2.216 km NNW of Coalinga, California · 14356 days ago · 10 km deep · 29 km away
  11. 1.529 km NE of Soledad, California · 14357 days ago · 4 km deep · 94 km away
  12. 2.110km WSW of Wasco, CA · 14357 days ago · 5 km deep · 89 km away
  13. 1.810 km NW of Kettleman City, California · 14359 days ago · 15 km deep · 14 km away
  14. 2.99km N of Kettleman City, CA · 14359 days ago · 5 km deep · 22 km away
  15. 2.8Central California · 14359 days ago · 15 km deep · 13 km away
  16. 1.79 km NE of Avenal, California · 14359 days ago · 14 km deep · 12 km away
  17. 1.710 km NNE of Avenal, California · 14360 days ago · 15 km deep · 11 km away
  18. 1.824 km ENE of San Ardo, California · 14360 days ago · 7 km deep · 41 km away
  19. 2.011 km WNW of Huron, California · 14361 days ago · 14 km deep · 15 km away
  20. 1.910 km WSW of Three Rocks, California · 14361 days ago · 6 km deep · 52 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc102195 (also filed as ci724465). Read Thu, Oct 1, 2026, 8:37 PM UTC.