California earthquakes

M1.8 earthquake 4 km ENE of Benbow, California

A magnitude 1.8 earthquake struck 4 km ENE of Benbow, California on Mon, Dec 8, 1975, 3:46 AM PST (11:46 UTC), 16 km (10 mi) below the surface.

A larger quake followed: M4.1 19 km WNW of Indianola, 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
1.8 (md), micro
Local time
UTC
1975-12-08 11:46:59 UTC
Depth
15.7 km (9.7 mi), shallow
Epicenter
40.080° N, 123.738° 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 2.2 km horizontally, 1.0 km in depth
Magnitude uncertainty
±0.11
Depth from
From location
Station coverage gap
309°, poorly surrounded by stations
Stations used
6

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 29 in the 60 days after this one and 52 in the 30 days before it.

After

  1. 2.219 km W of Ferndale, California · 18556 days ago · 23 km deep · 84 km away
  2. 1.930 km SW of Ferndale, California · 18556 days ago · 17 km deep · 73 km away
  3. 1.528 km SW of Ferndale, CA · 18554 days ago · 26 km deep · 77 km away
  4. 1.732 km SSW of Ferndale, California · 18550 days ago · 22 km deep · 65 km away
  5. 1.88 km NW of Mad River, California · 18548 days ago · 6 km deep · 49 km away
  6. 2.244 km SSW of Ferndale, California · 18548 days ago · 7 km deep · 70 km away
  7. 1.514 km ENE of Hydesville, California · 18546 days ago · 5 km deep · 57 km away
  8. 1.824 km WSW of Ferndale, California · 18545 days ago · 20 km deep · 79 km away
  9. 2.08 km ENE of Hydesville, California · 18544 days ago · 22 km deep · 61 km away
  10. 1.564 km SW of Ferndale, California · 18544 days ago · 5 km deep · 96 km away
  11. 1.61 km SE of Benbow, California · 18540 days ago · 19 km deep · 4 km away
  12. 1.531 km WSW of Ferndale, California · 18540 days ago · 22 km deep · 88 km away
  13. 2.735 km SW of Ferndale, California · 18536 days ago · 29 km deep · 72 km away
  14. 3.013 km N of Alderpoint, California · 18534 days ago · 32 km deep · 26 km away
  15. 2.219 km NW of Mad River, California · 18531 days ago · 24 km deep · 53 km away
  16. 2.36 km E of Willits, California · 18531 days ago · 2 km deep · 85 km away
  17. 4.119 km WNW of Indianola, California · 18519 days ago · 24 km deep · 94 km away
  18. 1.54 km NNW of Fields Landing, California · 18518 days ago · 24 km deep · 86 km away
  19. 1.721 km SSW of Ferndale, California · 18518 days ago · 22 km deep · 63 km away
  20. 2.937 km SW of Ferndale, California · 18517 days ago · 20 km deep · 77 km away
  21. 2.04 km NW of Fields Landing, California · 18517 days ago · 25 km deep · 86 km away
  22. 2.18 km W of Rio Dell, California · 18514 days ago · 20 km deep · 60 km away
  23. 2.115 km E of Redcrest, California · 18512 days ago · 6 km deep · 36 km away
  24. 3.437 km SW of Ferndale, California · 18512 days ago · 24 km deep · 73 km away
  25. 2.111 km S of Ferndale, California · 18511 days ago · 21 km deep · 62 km away
  26. 2.029 km WSW of Ferndale, California · 18509 days ago · 23 km deep · 86 km away
  27. 2.422 km NE of Potter Valley, California · 18504 days ago · 9 km deep · 100 km away
  28. 1.84 km S of McKinleyville, California · 18503 days ago · 18 km deep · 97 km away
  29. 3.65 km ESE of Burnt Ranch, California · 18503 days ago · 22 km deep · 83 km away

Before

  1. 1.618 km SSW of Scotia, California · 18561 days ago · 35 km deep · 48 km away
  2. 1.614 km NE of Myers Flat, California · 18561 days ago · 27 km deep · 31 km away
  3. 1.93 km W of Ferndale, California · 18563 days ago · 23 km deep · 73 km away
  4. 3.18 km NNW of Redwood Valley, California · 18563 days ago · 12 km deep · 93 km away
  5. 1.818 km SSW of Willow Creek, California · 18564 days ago · 0 km deep · 79 km away
  6. 2.6near the coast of Northern California · 18567 days ago · 23 km deep · 92 km away
  7. 1.625 km SW of Ferndale, California · 18570 days ago · 22 km deep · 69 km away
  8. 1.815 km W of Ferndale, California · 18571 days ago · 22 km deep · 81 km away
  9. 1.710 km N of Redcrest, California · 18572 days ago · 20 km deep · 50 km away
  10. 1.631 km SW of Ferndale, California · 18574 days ago · 20 km deep · 77 km away
  11. 3.229 km W of Ferndale, California · 18575 days ago · 33 km deep · 93 km away
  12. 2.58 km ENE of Willits, California · 18576 days ago · -1 km deep · 81 km away
  13. 3.14 km ENE of Willits, California · 18576 days ago · 10 km deep · 81 km away
  14. 2.30 km S of Redway, California · 18577 days ago · 19 km deep · 8 km away
  15. 2.430 km SSW of Ferndale, California · 18577 days ago · 24 km deep · 68 km away
  16. 2.937 km SW of Ferndale, California · 18577 days ago · 28 km deep · 71 km away
  17. 2.841 km SSW of Ferndale, California · 18578 days ago · 9 km deep · 68 km away
  18. 2.539 km SSW of Ferndale, California · 18578 days ago · 10 km deep · 69 km away
  19. 2.640 km SW of Ferndale, California · 18578 days ago · 9 km deep · 72 km away
  20. 3.048 km SW of Ferndale, California · 18578 days ago · 8 km deep · 74 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1027862. Read Wed, Sep 30, 2026, 9:38 PM UTC.