California earthquakes

M3.3 earthquake 88 km WNW of Samoa, California

A magnitude 3.3 earthquake struck 88 km WNW of Samoa, California on Fri, Oct 28, 1977, 11:41 PM PDT (06:41 UTC), 5 km (3 mi) below the surface.

A larger quake followed: M3.5 31 km W of Big Lagoon, California. This one was a foreshock.

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Map

Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude
3.3 (md), minor
Local time
UTC
1977-10-29 06:41:01 UTC
Depth
4.8 km (3.0 mi), shallow
Epicenter
41.012° N, 125.203° 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 6.6 km horizontally, 9.2 km in depth
Depth from
From location
Station coverage gap
314°, poorly surrounded by stations
Stations used
10

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 32 in the 60 days after this one and 28 in the 30 days before it.

After

  1. 2.077 km W of Samoa, California · 17858 days ago · 6 km deep · 11 km away
  2. 1.72 km NNE of Samoa, California · 17852 days ago · 23 km deep · 88 km away
  3. 3.065 km WSW of Ferndale, California · 17849 days ago · 8 km deep · 66 km away
  4. 2.827 km WSW of Ferndale, California · 17848 days ago · 23 km deep · 83 km away
  5. 1.928 km WSW of Ferndale, California · 17848 days ago · 23 km deep · 83 km away
  6. 2.867 km WSW of Ferndale, California · 17847 days ago · 5 km deep · 65 km away
  7. 1.868 km WSW of Ferndale, California · 17847 days ago · 7 km deep · 65 km away
  8. 1.628 km WSW of Ferndale, California · 17844 days ago · 24 km deep · 81 km away
  9. 2.418 km WNW of Indianola, California · 17844 days ago · 23 km deep · 71 km away
  10. 1.531 km WNW of Samoa, California · 17840 days ago · 20 km deep · 58 km away
  11. 1.815 km W of Ferndale, California · 17839 days ago · 20 km deep · 82 km away
  12. 2.733 km W of Ferndale, California · 17835 days ago · 20 km deep · 68 km away
  13. 1.78 km S of Ferndale, California · 17834 days ago · 19 km deep · 97 km away
  14. 1.625 km SW of Ferndale, California · 17834 days ago · 26 km deep · 91 km away
  15. 1.644 km WNW of Indianola, California · 17834 days ago · 21 km deep · 45 km away
  16. 2.427 km WNW of Ferndale, California · 17832 days ago · 20 km deep · 65 km away
  17. 2.880 km W of Ferndale, California · 17832 days ago · 5 km deep · 48 km away
  18. 1.635 km WSW of Ferndale, California · 17831 days ago · 23 km deep · 75 km away
  19. 2.530 km WSW of Ferndale, California · 17831 days ago · 23 km deep · 80 km away
  20. 1.521 km SW of Ferndale, California · 17826 days ago · 24 km deep · 87 km away
  21. 2.67 km NE of Westhaven-Moonstone, California · 17826 days ago · 18 km deep · 99 km away
  22. 3.237 km W of Big Lagoon, California · 17823 days ago · 16 km deep · 55 km away
  23. 1.856 km WNW of Samoa, California · 17817 days ago · 2 km deep · 32 km away
  24. 1.837 km W of Ferndale, California · 17817 days ago · 33 km deep · 68 km away
  25. 2.6127 km W of Trinidad, California · 17810 days ago · 5 km deep · 41 km away
  26. 3.531 km W of Big Lagoon, California · 17809 days ago · 22 km deep · 61 km away
  27. 2.538 km W of Ferndale, California · 17803 days ago · 20 km deep · 66 km away
  28. 3.631 km SW of Ferndale, California · 17802 days ago · 25 km deep · 95 km away
  29. 1.822 km SSW of Ferndale, California · 17801 days ago · 26 km deep · 97 km away
  30. 1.822 km SW of Ferndale, California · 17801 days ago · 26 km deep · 88 km away
  31. 1.765 km W of Ferndale, California · 17801 days ago · 7 km deep · 61 km away
  32. 2.032 km SW of Ferndale, California · 17801 days ago · 24 km deep · 96 km away

Before

  1. 1.930 km WSW of Ferndale, California · 17861 days ago · 21 km deep · 75 km away
  2. 2.338 km SW of Ferndale, California · 17862 days ago · 19 km deep · 93 km away
  3. 3.175 km W of Ferndale, California · 17862 days ago · 4 km deep · 58 km away
  4. 2.329 km SW of Ferndale, California · 17862 days ago · 19 km deep · 92 km away
  5. 2.028 km SW of Ferndale, California · 17862 days ago · 24 km deep · 87 km away
  6. 1.69 km S of Ferndale, California · 17867 days ago · -1 km deep · 97 km away
  7. 3.237 km SW of Ferndale, California · 17868 days ago · 23 km deep · 98 km away
  8. 1.616 km SSW of Ferndale, California · 17870 days ago · 18 km deep · 96 km away
  9. 1.513 km SW of Ferndale, California · 17872 days ago · 21 km deep · 91 km away
  10. 1.64 km N of Fortuna, California · 17873 days ago · 21 km deep · 98 km away
  11. 3.033 km SW of Ferndale, California · 17874 days ago · 24 km deep · 86 km away
  12. 2.5142 km W of Trinidad, California · 17875 days ago · 6 km deep · 56 km away
  13. 2.033 km SW of Ferndale, California · 17875 days ago · 28 km deep · 86 km away
  14. 2.42 km WSW of Loleta, California · 17875 days ago · 19 km deep · 90 km away
  15. 1.930 km W of Indianola, California · 17875 days ago · 23 km deep · 62 km away
  16. 2.3near the coast of Northern California · 17876 days ago · 21 km deep · 63 km away
  17. 3.574 km W of Ferndale, California · 17879 days ago · 6 km deep · 59 km away
  18. 1.527 km SW of Ferndale, California · 17880 days ago · 23 km deep · 93 km away
  19. 2.142 km W of Ferndale, California · 17880 days ago · 25 km deep · 59 km away
  20. 2.028 km W of Ferndale, California · 17881 days ago · 18 km deep · 70 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1037460. Read Tue, Sep 22, 2026, 3:25 PM UTC.