California earthquakes

M1.8 earthquake 34 km SW of Ferndale, California

A magnitude 1.8 earthquake struck 34 km SW of Ferndale, California on Wed, Aug 2, 1978, 4:40 AM PDT (11:40 UTC), 25 km (16 mi) below the surface.

A larger quake followed: M4.0 105 km W of Ferndale, California. This one was a foreshock.

Ferndale 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, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
1978-08-02 11:40:39 UTC
Depth
25.5 km (15.8 mi), shallow
Epicenter
40.346° N, 124.537° 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 4.2 km horizontally, 2.5 km in depth
Depth from
From location
Station coverage gap
265°, poorly surrounded by stations
Stations used
8

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 66 in the 30 days before it.

After

  1. 1.92 km NE of Fieldbrook, California · 17594 days ago · 19 km deep · 83 km away
  2. 2.778 km W of Ferndale, California · 17594 days ago · 4 km deep · 65 km away
  3. 1.622 km WSW of Weott, California · 17594 days ago · 4 km deep · 32 km away
  4. 3.135 km SSW of Ferndale, California · 17594 days ago · 26 km deep · 6 km away
  5. 1.939 km SW of Ferndale, California · 17594 days ago · 21 km deep · 5 km away
  6. 2.539 km SW of Ferndale, California · 17594 days ago · 23 km deep · 5 km away
  7. 1.734 km SSW of Ferndale, California · 17594 days ago · 25 km deep · 7 km away
  8. 2.410 km WNW of Hyampom, California · 17593 days ago · 32 km deep · 88 km away
  9. 3.583 km WSW of Ferndale, California · 17593 days ago · 32 km deep · 58 km away
  10. 2.2near the coast of Northern California · 17592 days ago · 26 km deep · 14 km away
  11. 2.943 km SW of Ferndale, California · 17591 days ago · 19 km deep · 9 km away
  12. 1.838 km WSW of Ferndale, California · 17591 days ago · 30 km deep · 18 km away
  13. 1.79 km S of Ferndale, California · 17591 days ago · 18 km deep · 29 km away
  14. 1.58 km SSW of Scotia, California · 17590 days ago · 25 km deep · 34 km away
  15. 2.36 km S of Ferndale, California · 17590 days ago · 8 km deep · 30 km away
  16. 1.613 km WNW of Willow Creek, California · 17589 days ago · 22 km deep · 96 km away
  17. 2.142 km SW of Ferndale, California · 17589 days ago · 19 km deep · 8 km away
  18. 1.831 km SSW of Ferndale, California · 17589 days ago · 19 km deep · 7 km away
  19. 1.69 km S of Ferndale, California · 17589 days ago · 18 km deep · 27 km away
  20. 1.75 km ENE of Redcrest, California · 17589 days ago · 22 km deep · 55 km away
  21. 1.523 km NE of Redcrest, California · 17588 days ago · 23 km deep · 70 km away
  22. 1.847 km WNW of Indianola, California · 17588 days ago · 7 km deep · 54 km away
  23. 2.726 km SSW of Ferndale, California · 17588 days ago · 19 km deep · 11 km away
  24. 1.610 km S of Ferndale, California · 17586 days ago · 18 km deep · 27 km away
  25. 1.775 km WSW of Ferndale, California · 17586 days ago · 4 km deep · 51 km away
  26. 1.832 km SW of Ferndale, California · 17586 days ago · 28 km deep · 8 km away
  27. 1.845 km SW of Ferndale, California · 17585 days ago · 21 km deep · 13 km away
  28. 2.823 km SSW of Ferndale, California · 17584 days ago · 30 km deep · 14 km away
  29. 2.593 km WSW of Ferndale, California · 17584 days ago · 6 km deep · 68 km away
  30. 2.113 km SSE of Mad River, California · 17584 days ago · -1 km deep · 90 km away
  31. 2.139 km WSW of Ferndale, California · 17584 days ago · 27 km deep · 13 km away
  32. 2.922 km SSW of Ferndale, California · 17583 days ago · 29 km deep · 15 km away
  33. 1.871 km WSW of Ferndale, California · 17583 days ago · 4 km deep · 46 km away
  34. 1.521 km WNW of Samoa, California · 17583 days ago · 20 km deep · 59 km away
  35. 2.498 km W of Ferndale, California · 17582 days ago · 3 km deep · 75 km away
  36. 2.627 km SSW of Ferndale, California · 17582 days ago · 13 km deep · 13 km away
  37. 2.275 km WSW of Ferndale, California · 17582 days ago · 10 km deep · 49 km away
  38. 1.62 km E of Garberville, California · 17581 days ago · 28 km deep · 71 km away
  39. 3.025 km SSW of Ferndale, California · 17581 days ago · 19 km deep · 12 km away
  40. 1.826 km SSW of Ferndale, California · 17581 days ago · 20 km deep · 9 km away
  41. 3.824 km SSW of Ferndale, California · 17581 days ago · 19 km deep · 13 km away
  42. 2.027 km SSW of Ferndale, California · 17581 days ago · 19 km deep · 10 km away
  43. 2.025 km SSW of Ferndale, California · 17581 days ago · 20 km deep · 11 km away
  44. 1.725 km SSW of Ferndale, California · 17581 days ago · 21 km deep · 10 km away
  45. 1.625 km SSW of Ferndale, California · 17581 days ago · 19 km deep · 12 km away
  46. 1.625 km SSW of Ferndale, California · 17581 days ago · 19 km deep · 10 km away
  47. 2.323 km SSW of Ferndale, California · 17581 days ago · 20 km deep · 14 km away
  48. 1.624 km SW of Ferndale, California · 17581 days ago · 20 km deep · 11 km away
  49. 1.626 km SW of Ferndale, California · 17581 days ago · 19 km deep · 9 km away
  50. 2.023 km SSW of Ferndale, California · 17581 days ago · 18 km deep · 13 km away
  51. 1.825 km SSW of Ferndale, California · 17581 days ago · 19 km deep · 12 km away
  52. 1.523 km SSW of Ferndale, California · 17581 days ago · 20 km deep · 15 km away
  53. 2.025 km SSW of Ferndale, California · 17581 days ago · 19 km deep · 12 km away
  54. 3.025 km SSW of Ferndale, California · 17581 days ago · 19 km deep · 12 km away
  55. 1.626 km SW of Ferndale, California · 17580 days ago · 19 km deep · 9 km away
  56. 1.727 km SSW of Ferndale, California · 17580 days ago · 19 km deep · 9 km away
  57. 1.515 km SSW of Ferndale, California · 17580 days ago · 7 km deep · 21 km away
  58. 1.627 km SW of Ferndale, California · 17580 days ago · 19 km deep · 7 km away
  59. 1.89 km S of Ferndale, California · 17580 days ago · 19 km deep · 27 km away
  60. 2.3near the coast of Northern California · 17579 days ago · 19 km deep · 12 km away

The first 60 of 186.

Before

  1. 2.229 km WNW of Cleone, California · 17595 days ago · 4 km deep · 89 km away
  2. 3.317 km ESE of Blue Lake, California · 17595 days ago · 32 km deep · 80 km away
  3. 2.96 km SW of Redcrest, California · 17595 days ago · 26 km deep · 45 km away
  4. 2.35 km W of Scotia, California · 17596 days ago · 21 km deep · 34 km away
  5. 1.632 km SW of Ferndale, California · 17597 days ago · 31 km deep · 2 km away
  6. 2.99 km S of Benbow, California · 17598 days ago · -1 km deep · 75 km away
  7. 2.122 km WSW of Weott, California · 17598 days ago · 2 km deep · 32 km away
  8. 1.814 km SSW of Ferndale, California · 17599 days ago · 26 km deep · 21 km away
  9. 1.89 km S of Ferndale, California · 17600 days ago · 18 km deep · 26 km away
  10. 2.129 km WNW of Ferndale, California · 17600 days ago · 22 km deep · 36 km away
  11. 2.387 km WSW of Ferndale, California · 17601 days ago · 4 km deep · 63 km away
  12. 2.411 km NNE of Redcrest, California · 17601 days ago · 24 km deep · 56 km away
  13. 1.522 km SW of Ferndale, California · 17602 days ago · 17 km deep · 12 km away
  14. 1.622 km SW of Ferndale, California · 17602 days ago · 17 km deep · 13 km away
  15. 1.821 km SW of Ferndale, California · 17602 days ago · 18 km deep · 13 km away
  16. 2.69 km S of Ferndale, California · 17602 days ago · 19 km deep · 27 km away
  17. 1.528 km W of Indianola, California · 17603 days ago · 22 km deep · 38 km away
  18. 2.368 km WSW of Ferndale, California · 17603 days ago · 7 km deep · 43 km away
  19. 2.596 km WNW of Indianola, California · 17603 days ago · 5 km deep · 90 km away
  20. 3.279 km WSW of Ferndale, California · 17603 days ago · 5 km deep · 54 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1041339. Read Sun, Oct 4, 2026, 4:43 AM UTC.