California earthquakes

M4.0 earthquake 46 km WNW of Ferndale, California

A magnitude 4.0 earthquake struck 46 km WNW of Ferndale, California on Tue, Feb 18, 1986, 4:25 PM PST (00:25 UTC), 1 km (1 mi) below the surface.

A larger quake followed: M4.4 74 km WSW 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
4.0 (ml), light
Local time
UTC
1986-02-19 00:25:39 UTC
Depth
1.1 km (0.7 mi), shallow
Epicenter
40.706° N, 124.785° 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 2.5 km horizontally, 4.7 km in depth
Depth from
From location
Station coverage gap
255°, poorly surrounded by stations
Stations used
28

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 38 in the 60 days after this one and 12 in the 30 days before it.

After

  1. 2.7115 km W of Trinidad, California · 14821 days ago · 4 km deep · 79 km away
  2. 1.68 km E of Rio Dell, California · 14820 days ago · 19 km deep · 69 km away
  3. 2.328 km SSW of Ferndale, California · 14820 days ago · 20 km deep · 48 km away
  4. 3.534 km W of Ferndale, California · 14816 days ago · 12 km deep · 18 km away
  5. 2.98 km WSW of Rio Dell, California · 14814 days ago · 26 km deep · 55 km away
  6. 2.59 km WSW of Rio Dell, California · 14814 days ago · 26 km deep · 55 km away
  7. 1.618 km WSW of Weott, California · 14814 days ago · 3 km deep · 76 km away
  8. 2.450 km WSW of Ferndale, California · 14813 days ago · 5 km deep · 40 km away
  9. 3.850 km SW of Ferndale, California · 14813 days ago · 4 km deep · 54 km away
  10. 2.192 km WSW of Ferndale, California · 14810 days ago · 4 km deep · 71 km away
  11. 3.836 km SSW of Ferndale, California · 14808 days ago · -1 km deep · 54 km away
  12. 3.057 km WSW of Ferndale, California · 14808 days ago · 4 km deep · 38 km away
  13. 3.337 km WSW of Ferndale, California · 14808 days ago · 22 km deep · 30 km away
  14. 2.339 km WSW of Ferndale, California · 14807 days ago · 15 km deep · 29 km away
  15. 3.6near the coast of Northern California · 14805 days ago · 20 km deep · 60 km away
  16. 3.1near the coast of Northern California · 14805 days ago · 11 km deep · 45 km away
  17. 3.995 km W of Ferndale, California · 14805 days ago · 8 km deep · 58 km away
  18. 2.027 km SSW of Ferndale, California · 14796 days ago · 15 km deep · 51 km away
  19. 2.4near the coast of Northern California · 14796 days ago · 4 km deep · 69 km away
  20. 3.815 km WSW of Willow Creek, California · 14795 days ago · 24 km deep · 86 km away
  21. 3.413 km SW of Willow Creek, California · 14795 days ago · 20 km deep · 88 km away
  22. 3.588 km WNW of Indianola, California · 14795 days ago · 5 km deep · 45 km away
  23. 1.919 km W of Hyampom, California · 14794 days ago · 8 km deep · 94 km away
  24. 2.932 km SSW of Ferndale, California · 14792 days ago · 4 km deep · 53 km away
  25. 2.132 km SSW of Ferndale, California · 14785 days ago · 6 km deep · 53 km away
  26. 3.235 km SW of Scotia, California · 14784 days ago · 22 km deep · 58 km away
  27. 3.036 km SW of Scotia, California · 14784 days ago · 2 km deep · 58 km away
  28. 2.431 km SW of Scotia, California · 14783 days ago · 24 km deep · 59 km away
  29. 2.475 km WNW of Samoa, California · 14782 days ago · 4 km deep · 38 km away
  30. 3.119 km WSW of Scotia, California · 14778 days ago · 22 km deep · 55 km away
  31. 2.294 km W of Ferndale, California · 14776 days ago · 5 km deep · 56 km away
  32. 4.474 km WSW of Ferndale, California · 14770 days ago · 4 km deep · 44 km away
  33. 3.251 km SW of Ferndale, California · 14770 days ago · 11 km deep · 50 km away
  34. 2.531 km SW of Scotia, California · 14770 days ago · 5 km deep · 56 km away
  35. 2.012 km WNW of Fields Landing, California · 14770 days ago · 15 km deep · 37 km away
  36. 3.564 km W of Ferndale, California · 14770 days ago · 0 km deep · 33 km away
  37. 2.238 km WSW of Ferndale, California · 14769 days ago · 24 km deep · 34 km away
  38. 2.25 km SSW of Ferndale, California · 14768 days ago · 8 km deep · 47 km away

Before

  1. 2.439 km WSW of Ferndale, California · 14836 days ago · 14 km deep · 27 km away
  2. 1.71 km S of Loleta, California · 14837 days ago · 4 km deep · 48 km away
  3. 1.87 km SSW of Scotia, California · 14839 days ago · 5 km deep · 64 km away
  4. 3.537 km W of Ferndale, California · 14839 days ago · 17 km deep · 14 km away
  5. 3.24 km ESE of Indianola, California · 14842 days ago · 20 km deep · 64 km away
  6. 1.98 km NNW of Redcrest, California · 14843 days ago · 25 km deep · 73 km away
  7. 2.693 km W of Ferndale, California · 14843 days ago · 13 km deep · 56 km away
  8. 1.910 km E of Hydesville, California · 14843 days ago · 4 km deep · 70 km away
  9. 3.065 km WNW of Ferndale, California · 14844 days ago · 0 km deep · 20 km away
  10. 2.749 km WNW of Shelter Cove, California · 14845 days ago · 4 km deep · 59 km away
  11. 3.591 km W of Ferndale, California · 14854 days ago · 2 km deep · 54 km away
  12. 2.733 km SSW of Ferndale, California · 14854 days ago · 11 km deep · 53 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc67435 (also filed as usp0002r3u). Read Tue, Sep 22, 2026, 9:42 AM UTC.