California earthquakes

M1.8 earthquake 11 km NW of Hayfork, California

A magnitude 1.8 earthquake struck 11 km NW of Hayfork, California on Thu, Jul 6, 1978, 11:18 AM PDT (18:18 UTC), 4 km (3 mi) below the surface.

A larger quake followed: M3.8 24 km SSW of Ferndale, California. This one was a foreshock.

Hayfork 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
1.8 (md), micro
Local time
UTC
1978-07-06 18:18:14 UTC
Depth
4.1 km (2.5 mi), shallow
Epicenter
40.620° N, 123.288° 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 5.3 km horizontally, 11.1 km in depth
Depth from
From location
Station coverage gap
260°, poorly surrounded by stations
Stations used
4

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 38 in the 30 days before it.

After

  1. 2.43 km SSE of Fieldbrook, California · 17612 days ago · 28 km deep · 71 km away
  2. 3.37 km NW of Ruth, California · 17611 days ago · 30 km deep · 35 km away
  3. 1.55 km WNW of Weott, California · 17611 days ago · 4 km deep · 66 km away
  4. 1.76 km NW of Ruth, California · 17611 days ago · 20 km deep · 35 km away
  5. 1.67 km NW of Ruth, California · 17611 days ago · 23 km deep · 36 km away
  6. 2.55 km NW of Big Lagoon, California · 17610 days ago · 28 km deep · 99 km away
  7. 2.412 km NNE of Redcrest, CA · 17609 days ago · 22 km deep · 54 km away
  8. 3.128 km SSW of Ferndale, California · 17608 days ago · 18 km deep · 99 km away
  9. 2.729 km SSW of Ferndale, California · 17608 days ago · 18 km deep · 99 km away
  10. 1.920 km ENE of Westhaven-Moonstone, California · 17608 days ago · 22 km deep · 73 km away
  11. 1.610 km S of Ferndale, California · 17606 days ago · 18 km deep · 85 km away
  12. 2.39 km WSW of Scotia, California · 17606 days ago · 3 km deep · 80 km away
  13. 2.99 km WSW of Scotia, California · 17606 days ago · 3 km deep · 80 km away
  14. 1.99 km W of Scotia, California · 17606 days ago · 2 km deep · 80 km away
  15. 3.010 km S of Ferndale, California · 17606 days ago · 19 km deep · 85 km away
  16. 2.99 km WSW of Scotia, California · 17606 days ago · 7 km deep · 80 km away
  17. 1.818 km SW of Scotia, California · 17605 days ago · 31 km deep · 86 km away
  18. 1.69 km S of Ferndale, California · 17599 days ago · 18 km deep · 84 km away
  19. 2.410 km S of Ferndale, California · 17599 days ago · 19 km deep · 85 km away
  20. 2.69 km S of Ferndale, California · 17598 days ago · 19 km deep · 85 km away
  21. 2.411 km NNE of Redcrest, California · 17596 days ago · 24 km deep · 54 km away
  22. 1.89 km S of Ferndale, California · 17595 days ago · 18 km deep · 86 km away
  23. 3.07 km NNW of Rancho Tehama Reserve, California · 17595 days ago · 18 km deep · 94 km away
  24. 2.39 km WNW of Rancho Tehama Reserve, California · 17595 days ago · 22 km deep · 92 km away
  25. 1.98 km WSW of Rancho Tehama Reserve, California · 17595 days ago · 11 km deep · 97 km away
  26. 1.814 km SSW of Ferndale, California · 17595 days ago · 26 km deep · 90 km away
  27. 2.122 km WSW of Weott, California · 17594 days ago · 2 km deep · 85 km away
  28. 2.99 km S of Benbow, California · 17593 days ago · -1 km deep · 83 km away
  29. 2.35 km W of Scotia, California · 17591 days ago · 21 km deep · 76 km away
  30. 2.96 km SW of Redcrest, California · 17590 days ago · 26 km deep · 67 km away
  31. 3.317 km ESE of Blue Lake, California · 17590 days ago · 32 km deep · 49 km away
  32. 1.92 km NE of Fieldbrook, California · 17590 days ago · 19 km deep · 73 km away
  33. 1.622 km WSW of Weott, California · 17589 days ago · 4 km deep · 85 km away
  34. 2.410 km WNW of Hyampom, California · 17588 days ago · 32 km deep · 24 km away
  35. 2.2near the coast of Northern California · 17587 days ago · 26 km deep · 98 km away
  36. 1.79 km S of Ferndale, California · 17586 days ago · 18 km deep · 83 km away
  37. 1.58 km SSW of Scotia, California · 17585 days ago · 25 km deep · 76 km away
  38. 2.36 km S of Ferndale, California · 17585 days ago · 8 km deep · 83 km away
  39. 1.613 km WNW of Willow Creek, California · 17584 days ago · 22 km deep · 58 km away
  40. 1.69 km S of Ferndale, California · 17584 days ago · 18 km deep · 85 km away
  41. 1.75 km ENE of Redcrest, California · 17584 days ago · 22 km deep · 56 km away
  42. 1.523 km NE of Redcrest, California · 17583 days ago · 23 km deep · 40 km away
  43. 2.726 km SSW of Ferndale, California · 17583 days ago · 19 km deep · 99 km away
  44. 1.610 km S of Ferndale, California · 17581 days ago · 18 km deep · 85 km away
  45. 2.823 km SSW of Ferndale, California · 17579 days ago · 30 km deep · 96 km away
  46. 2.113 km SSE of Mad River, California · 17579 days ago · -1 km deep · 36 km away
  47. 2.922 km SSW of Ferndale, California · 17578 days ago · 29 km deep · 95 km away
  48. 1.521 km WNW of Samoa, California · 17578 days ago · 20 km deep · 100 km away
  49. 2.627 km SSW of Ferndale, California · 17577 days ago · 13 km deep · 97 km away
  50. 1.62 km E of Garberville, California · 17577 days ago · 28 km deep · 71 km away
  51. 3.025 km SSW of Ferndale, California · 17576 days ago · 19 km deep · 98 km away
  52. 3.824 km SSW of Ferndale, California · 17576 days ago · 19 km deep · 97 km away
  53. 2.027 km SSW of Ferndale, California · 17576 days ago · 19 km deep · 100 km away
  54. 2.025 km SSW of Ferndale, California · 17576 days ago · 20 km deep · 99 km away
  55. 1.625 km SSW of Ferndale, California · 17576 days ago · 19 km deep · 98 km away
  56. 1.625 km SSW of Ferndale, California · 17576 days ago · 19 km deep · 100 km away
  57. 2.323 km SSW of Ferndale, California · 17576 days ago · 20 km deep · 96 km away
  58. 1.624 km SW of Ferndale, California · 17576 days ago · 20 km deep · 100 km away
  59. 2.023 km SSW of Ferndale, California · 17576 days ago · 18 km deep · 97 km away
  60. 1.825 km SSW of Ferndale, California · 17576 days ago · 19 km deep · 98 km away

The first 60 of 90.

Before

  1. 1.516 km WSW of Ferndale, California · 17617 days ago · 21 km deep · 97 km away
  2. 1.97 km WNW of Ferndale, California · 17618 days ago · 19 km deep · 89 km away
  3. 2.713 km WNW of Samoa, California · 17618 days ago · 23 km deep · 92 km away
  4. 2.56 km SSW of Scotia, California · 17619 days ago · 25 km deep · 73 km away
  5. 2.319 km SSE of Ruth, California · 17619 days ago · 5 km deep · 57 km away
  6. 1.725 km SSW of Scotia, California · 17619 days ago · -1 km deep · 90 km away
  7. 1.710 km WNW of Manila, California · 17619 days ago · 20 km deep · 89 km away
  8. 3.39 km S of Ferndale, California · 17622 days ago · 19 km deep · 85 km away
  9. 2.010 km SW of Trinidad, California · 17624 days ago · 23 km deep · 89 km away
  10. 2.221 km WNW of Hyampom, California · 17625 days ago · 25 km deep · 35 km away
  11. 1.517 km S of Ferndale, California · 17625 days ago · 20 km deep · 88 km away
  12. 1.67 km W of Rio Dell, California · 17626 days ago · 19 km deep · 78 km away
  13. 2.525 km SSW of Ferndale, California · 17627 days ago · 24 km deep · 100 km away
  14. 2.116 km WSW of Scotia, California · 17627 days ago · 20 km deep · 87 km away
  15. 1.67 km WSW of Rio Dell, California · 17627 days ago · 28 km deep · 78 km away
  16. 1.96 km WNW of McKinleyville, California · 17628 days ago · 4 km deep · 84 km away
  17. 1.724 km SSW of Ferndale, California · 17629 days ago · 25 km deep · 96 km away
  18. 1.614 km ENE of Weott, California · 17629 days ago · 21 km deep · 48 km away
  19. 3.24 km N of Redway, California · 17630 days ago · 19 km deep · 69 km away
  20. 1.9Northern California · 17630 days ago · 17 km deep · 67 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1040936. Read Tue, Sep 29, 2026, 7:10 AM UTC.