California earthquakes

M3.5 earthquake 34 km W of Ferndale, California

A magnitude 3.5 earthquake struck 34 km W of Ferndale, California on Fri, Feb 28, 1986, 2:31 AM PST (10:31 UTC), 12 km (7 mi) below the surface.

A larger quake followed: M3.8 50 km SW 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
3.5 (ml), minor
Local time
UTC
1986-02-28 10:31:35 UTC
Depth
12.0 km (7.5 mi), shallow
Epicenter
40.570° N, 124.666° 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 0.7 km horizontally, 1.4 km in depth
Depth from
From location
Station coverage gap
234°, poorly surrounded by stations
Stations used
41

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 47 in the 60 days after this one and 14 in the 30 days before it.

After

  1. 2.98 km WSW of Rio Dell, California · 14815 days ago · 26 km deep · 40 km away
  2. 2.59 km WSW of Rio Dell, California · 14815 days ago · 26 km deep · 40 km away
  3. 1.618 km WSW of Weott, California · 14814 days ago · 3 km deep · 58 km away
  4. 2.450 km WSW of Ferndale, California · 14813 days ago · 5 km deep · 27 km away
  5. 3.850 km SW of Ferndale, California · 14813 days ago · 4 km deep · 38 km away
  6. 2.192 km WSW of Ferndale, California · 14811 days ago · 4 km deep · 65 km away
  7. 3.836 km SSW of Ferndale, California · 14809 days ago · -1 km deep · 36 km away
  8. 3.057 km WSW of Ferndale, California · 14809 days ago · 4 km deep · 29 km away
  9. 3.337 km WSW of Ferndale, California · 14808 days ago · 22 km deep · 14 km away
  10. 2.339 km WSW of Ferndale, California · 14808 days ago · 15 km deep · 14 km away
  11. 3.6near the coast of Northern California · 14806 days ago · 20 km deep · 42 km away
  12. 3.1near the coast of Northern California · 14806 days ago · 11 km deep · 27 km away
  13. 3.995 km W of Ferndale, California · 14805 days ago · 8 km deep · 62 km away
  14. 2.027 km SSW of Ferndale, California · 14797 days ago · 15 km deep · 33 km away
  15. 2.4near the coast of Northern California · 14796 days ago · 4 km deep · 75 km away
  16. 3.815 km WSW of Willow Creek, California · 14796 days ago · 24 km deep · 81 km away
  17. 3.413 km SW of Willow Creek, California · 14796 days ago · 20 km deep · 83 km away
  18. 3.588 km WNW of Indianola, California · 14796 days ago · 5 km deep · 62 km away
  19. 1.919 km W of Hyampom, California · 14795 days ago · 8 km deep · 83 km away
  20. 2.932 km SSW of Ferndale, California · 14792 days ago · 4 km deep · 35 km away
  21. 2.132 km SSW of Ferndale, California · 14786 days ago · 6 km deep · 35 km away
  22. 3.235 km SW of Scotia, California · 14785 days ago · 22 km deep · 39 km away
  23. 3.036 km SW of Scotia, California · 14785 days ago · 2 km deep · 39 km away
  24. 2.431 km SW of Scotia, California · 14784 days ago · 24 km deep · 41 km away
  25. 2.14 km N of Redway, California · 14783 days ago · 15 km deep · 85 km away
  26. 2.475 km WNW of Samoa, California · 14782 days ago · 4 km deep · 57 km away
  27. 2.59 km NNW of Mad River, California · 14779 days ago · -1 km deep · 95 km away
  28. 2.16 km NNW of Mad River, California · 14778 days ago · 2 km deep · 95 km away
  29. 3.119 km WSW of Scotia, California · 14778 days ago · 22 km deep · 38 km away
  30. 2.02 km NNW of Redway, California · 14778 days ago · 17 km deep · 85 km away
  31. 2.294 km W of Ferndale, California · 14777 days ago · 5 km deep · 61 km away
  32. 1.913 km SSW of Mad River, California · 14771 days ago · 4 km deep · 95 km away
  33. 4.474 km WSW of Ferndale, California · 14771 days ago · 4 km deep · 42 km away
  34. 3.251 km SW of Ferndale, California · 14771 days ago · 11 km deep · 34 km away
  35. 2.531 km SW of Scotia, California · 14771 days ago · 5 km deep · 38 km away
  36. 2.012 km WNW of Fields Landing, California · 14771 days ago · 15 km deep · 34 km away
  37. 3.564 km W of Ferndale, California · 14770 days ago · 0 km deep · 32 km away
  38. 2.238 km WSW of Ferndale, California · 14770 days ago · 24 km deep · 17 km away
  39. 2.25 km SSW of Ferndale, California · 14769 days ago · 8 km deep · 33 km away
  40. 1.923 km WSW of Ferndale, California · 14765 days ago · 26 km deep · 18 km away
  41. 3.0103 km W of Big Lagoon, California · 14765 days ago · 23 km deep · 97 km away
  42. 2.522 km WSW of Ferndale, California · 14765 days ago · 26 km deep · 18 km away
  43. 2.029 km W of Ferndale, California · 14765 days ago · 25 km deep · 5 km away
  44. 1.930 km SW of Scotia, California · 14764 days ago · 1 km deep · 37 km away
  45. 2.635 km SSW of Ferndale, California · 14761 days ago · 21 km deep · 34 km away
  46. 2.024 km W of Ferndale, California · 14760 days ago · 24 km deep · 10 km away
  47. 2.545 km SW of Ferndale, California · 14759 days ago · 22 km deep · 26 km away

Before

  1. 2.328 km SSW of Ferndale, California · 14821 days ago · 20 km deep · 30 km away
  2. 1.68 km E of Rio Dell, California · 14821 days ago · 19 km deep · 56 km away
  3. 2.7115 km W of Trinidad, California · 14821 days ago · 4 km deep · 97 km away
  4. 4.046 km WNW of Ferndale, California · 14826 days ago · 1 km deep · 18 km away
  5. 2.439 km WSW of Ferndale, California · 14836 days ago · 14 km deep · 12 km away
  6. 1.71 km S of Loleta, California · 14837 days ago · 4 km deep · 38 km away
  7. 1.87 km SSW of Scotia, California · 14839 days ago · 5 km deep · 49 km away
  8. 3.537 km W of Ferndale, California · 14839 days ago · 17 km deep · 5 km away
  9. 3.24 km ESE of Indianola, California · 14842 days ago · 20 km deep · 59 km away
  10. 1.98 km NNW of Redcrest, California · 14843 days ago · 25 km deep · 59 km away
  11. 2.693 km W of Ferndale, California · 14843 days ago · 13 km deep · 60 km away
  12. 1.910 km E of Hydesville, California · 14844 days ago · 4 km deep · 58 km away
  13. 3.065 km WNW of Ferndale, California · 14845 days ago · 0 km deep · 33 km away
  14. 2.749 km WNW of Shelter Cove, California · 14845 days ago · 4 km deep · 42 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc67191 (also filed as usp0002rcm). Read Tue, Sep 22, 2026, 9:40 PM UTC.