California earthquakes

M2.8 earthquake 6 km WSW of Biola, California

A magnitude 2.8 earthquake struck 6 km WSW of Biola, California on Thu, Dec 7, 1978, 11:06 PM PST (07:06 UTC), 12 km (7 mi) below the surface.

A larger quake followed: M3.1 29 km ENE of Soledad, California. This one was a foreshock.

Biola 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
2.8 (md), micro
Local time
UTC
1978-12-08 07:06:53 UTC
Depth
12.1 km (7.5 mi), shallow
Epicenter
36.787° N, 120.088° 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 4.0 km horizontally, 2.6 km in depth
Magnitude uncertainty
±0.04
Depth from
From location
Station coverage gap
294°, poorly surrounded by stations
Stations used
18

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 63 in the 60 days after this one and 30 in the 30 days before it.

After

  1. 1.621 km NE of Soledad, California · 17455 days ago · 7 km deep · 98 km away
  2. 3.129 km ENE of Soledad, California · 17455 days ago · 9 km deep · 89 km away
  3. 1.923 km NE of King City, California · 17455 days ago · 6 km deep · 90 km away
  4. 1.528 km ENE of Soledad, California · 17452 days ago · 8 km deep · 89 km away
  5. 1.623 km NW of Parkfield, California · 17451 days ago · 2 km deep · 94 km away
  6. 2.024 km NE of Greenfield, California · 17450 days ago · 7 km deep · 93 km away
  7. 3.123 km NE of San Ardo, California · 17449 days ago · 7 km deep · 89 km away
  8. 2.322 km NE of San Ardo, California · 17449 days ago · 5 km deep · 90 km away
  9. 2.621 km NE of Soledad, California · 17447 days ago · 4 km deep · 100 km away
  10. 1.721 km NE of Soledad, California · 17447 days ago · 7 km deep · 98 km away
  11. 1.921 km NE of Soledad, California · 17447 days ago · 5 km deep · 97 km away
  12. 1.521 km NE of Soledad, California · 17447 days ago · 6 km deep · 97 km away
  13. 2.712 km NNE of Auberry, California · 17447 days ago · 5 km deep · 73 km away
  14. 2.221 km NE of Soledad, California · 17446 days ago · 4 km deep · 100 km away
  15. 3.322 km NE of San Ardo, California · 17445 days ago · 8 km deep · 90 km away
  16. 1.816 km E of Tres Pinos, California · 17441 days ago · 5 km deep · 93 km away
  17. 1.724 km ENE of Soledad, California · 17441 days ago · 4 km deep · 94 km away
  18. 2.021 km NE of Soledad, California · 17440 days ago · 4 km deep · 99 km away
  19. 1.615 km NW of Parkfield, California · 17438 days ago · 5 km deep · 97 km away
  20. 1.721 km NE of Soledad, California · 17438 days ago · 8 km deep · 97 km away
  21. 3.025 km ENE of San Ardo, California · 17436 days ago · 4 km deep · 93 km away
  22. 1.621 km NE of San Ardo, California · 17435 days ago · 3 km deep · 91 km away
  23. 2.123 km NE of San Ardo, California · 17433 days ago · 7 km deep · 89 km away
  24. 2.41 km ESE of Kettleman City, California · 17433 days ago · 12 km deep · 88 km away
  25. 1.823 km NW of Parkfield, California · 17431 days ago · 1 km deep · 95 km away
  26. 2.58 km E of Huron, California · 17431 days ago · 21 km deep · 64 km away
  27. 2.024 km ENE of Soledad, California · 17429 days ago · 3 km deep · 93 km away
  28. 2.021 km NE of Soledad, California · 17429 days ago · 2 km deep · 100 km away
  29. 1.534 km ENE of Soledad, California · 17428 days ago · 6 km deep · 85 km away
  30. 2.815 km NW of Parkfield, California · 17428 days ago · 5 km deep · 97 km away
  31. 2.48km SSE of Kettleman City, CA · 17428 days ago · 6 km deep · 96 km away
  32. 1.921 km NE of Soledad, California · 17428 days ago · 4 km deep · 100 km away
  33. 2.122 km NE of Soledad, California · 17427 days ago · 2 km deep · 97 km away
  34. 3.810 km ESE of Coalinga, California · 17425 days ago · 10 km deep · 78 km away
  35. 2.310 km ESE of Coalinga, California · 17425 days ago · 9 km deep · 78 km away
  36. 2.311 km ESE of Coalinga, California · 17425 days ago · 9 km deep · 79 km away
  37. 2.210 km ESE of Coalinga, California · 17425 days ago · 10 km deep · 78 km away
  38. 2.810 km ESE of Coalinga, California · 17425 days ago · 10 km deep · 77 km away
  39. 2.110 km ESE of Coalinga, California · 17425 days ago · 9 km deep · 78 km away
  40. 1.59 km SE of Coalinga, California · 17425 days ago · 8 km deep · 81 km away
  41. 2.89 km ESE of Coalinga, California · 17423 days ago · 10 km deep · 78 km away
  42. 2.510 km ESE of Coalinga, California · 17423 days ago · 10 km deep · 77 km away
  43. 1.518 km NW of Parkfield, California · 17422 days ago · 4 km deep · 96 km away
  44. 3.123 km NE of King City, California · 17420 days ago · 7 km deep · 89 km away
  45. 1.919 km NW of Parkfield, California · 17418 days ago · 4 km deep · 96 km away
  46. 1.823 km NNE of San Lucas, California · 17417 days ago · 5 km deep · 89 km away
  47. 2.221 km NE of Soledad, California · 17416 days ago · 6 km deep · 99 km away
  48. 1.725 km NE of Greenfield, California · 17415 days ago · 2 km deep · 90 km away
  49. 2.221 km NE of Soledad, California · 17415 days ago · 6 km deep · 99 km away
  50. 1.823 km NE of King City, California · 17414 days ago · 4 km deep · 89 km away
  51. 2.728 km WSW of Mendota, California · 17413 days ago · 6 km deep · 54 km away
  52. 1.629 km ENE of Soledad, California · 17410 days ago · 4 km deep · 89 km away
  53. 2.423 km ENE of San Lucas, California · 17409 days ago · 5 km deep · 88 km away
  54. 2.1Central California · 17408 days ago · 7 km deep · 99 km away
  55. 1.76 km NNW of Avenal, California · 17405 days ago · 7 km deep · 81 km away
  56. 1.724 km ENE of San Ardo, California · 17404 days ago · 3 km deep · 93 km away
  57. 2.523 km ENE of San Lucas, California · 17404 days ago · 6 km deep · 88 km away
  58. 2.1Central California · 17402 days ago · 4 km deep · 96 km away
  59. 1.621 km NW of Parkfield, California · 17400 days ago · 3 km deep · 95 km away
  60. 1.624 km NE of Greenfield, California · 17398 days ago · 5 km deep · 92 km away

The first 60 of 63.

Before

  1. 1.727 km ENE of Soledad, California · 17456 days ago · 10 km deep · 91 km away
  2. 2.622 km ENE of Soledad, California · 17458 days ago · 3 km deep · 96 km away
  3. 1.620 km NW of Parkfield, California · 17458 days ago · 3 km deep · 96 km away
  4. 1.622 km ENE of Soledad, California · 17459 days ago · 2 km deep · 96 km away
  5. 2.421 km NE of Soledad, California · 17459 days ago · 8 km deep · 98 km away
  6. 1.930 km WNW of Three Rocks, California · 17461 days ago · 3 km deep · 59 km away
  7. 2.97 km WNW of Yosemite Lakes, California · 17462 days ago · 23 km deep · 54 km away
  8. 2.123 km ENE of Soledad, California · 17462 days ago · 4 km deep · 94 km away
  9. 1.622 km ENE of Soledad, California · 17464 days ago · 4 km deep · 95 km away
  10. 3.023 km ENE of San Lucas, California · 17464 days ago · 9 km deep · 88 km away
  11. 1.621 km NE of Soledad, California · 17465 days ago · 8 km deep · 97 km away
  12. 1.617 km NW of Parkfield, California · 17466 days ago · 5 km deep · 96 km away
  13. 1.823 km NE of Soledad, California · 17467 days ago · 8 km deep · 95 km away
  14. 2.024 km NE of Greenfield, California · 17470 days ago · 6 km deep · 93 km away
  15. 3.024 km ENE of Greenfield, California · 17473 days ago · 7 km deep · 91 km away
  16. 1.723 km NE of San Ardo, California · 17473 days ago · 7 km deep · 89 km away
  17. 2.021 km NE of Soledad, California · 17479 days ago · 2 km deep · 99 km away
  18. 2.128 km NE of Greenfield, California · 17479 days ago · 6 km deep · 88 km away
  19. 1.728 km SW of South Dos Palos, California · 17479 days ago · 10 km deep · 71 km away
  20. 3.121 km NE of Soledad, California · 17479 days ago · 3 km deep · 99 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1043665 (also filed as ci3343916). Read Tue, Sep 22, 2026, 3:36 PM UTC.