California earthquakes

M1.5 earthquake 14 km ENE of Hydesville, California

A magnitude 1.5 earthquake struck 14 km ENE of Hydesville, California on Sun, Dec 21, 1975, 1:26 PM PST (21:26 UTC), 5 km (3 mi) below the surface.

A larger quake followed: M4.1 19 km WNW of Indianola, California. This one was a foreshock.

Hydesville 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
1.5 (md), micro
Local time
UTC
1975-12-21 21:26:21 UTC
Depth
4.6 km (2.9 mi), shallow
Epicenter
40.575° N, 123.926° 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 6.5 km horizontally, 19.9 km in depth
Depth from
From location
Station coverage gap
154°
Stations used
4

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 27 in the 60 days after this one and 22 in the 30 days before it.

After

  1. 1.824 km WSW of Ferndale, California · 18545 days ago · 20 km deep · 51 km away
  2. 2.08 km ENE of Hydesville, California · 18545 days ago · 22 km deep · 8 km away
  3. 1.564 km SW of Ferndale, California · 18544 days ago · 5 km deep · 89 km away
  4. 3.244 km W of Indianola, California · 18541 days ago · 27 km deep · 72 km away
  5. 2.841 km WNW of Ferndale, California · 18540 days ago · 20 km deep · 69 km away
  6. 1.61 km SE of Benbow, California · 18540 days ago · 19 km deep · 59 km away
  7. 1.531 km WSW of Ferndale, California · 18540 days ago · 22 km deep · 59 km away
  8. 2.735 km SW of Ferndale, California · 18536 days ago · 29 km deep · 57 km away
  9. 2.0off the coast of Northern California · 18536 days ago · 5 km deep · 94 km away
  10. 3.013 km N of Alderpoint, California · 18534 days ago · 32 km deep · 39 km away
  11. 2.219 km NW of Mad River, California · 18531 days ago · 24 km deep · 20 km away
  12. 3.012 km NNE of Willow Creek, California · 18521 days ago · 31 km deep · 60 km away
  13. 4.119 km WNW of Indianola, California · 18519 days ago · 24 km deep · 48 km away
  14. 1.54 km NNW of Fields Landing, California · 18518 days ago · 24 km deep · 33 km away
  15. 1.721 km SSW of Ferndale, California · 18518 days ago · 22 km deep · 41 km away
  16. 2.937 km SW of Ferndale, California · 18517 days ago · 20 km deep · 61 km away
  17. 2.04 km NW of Fields Landing, California · 18517 days ago · 25 km deep · 33 km away
  18. 2.164 km W of Ferndale, California · 18515 days ago · 5 km deep · 93 km away
  19. 2.18 km W of Rio Dell, California · 18514 days ago · 20 km deep · 25 km away
  20. 2.115 km E of Redcrest, California · 18513 days ago · 6 km deep · 23 km away
  21. 3.437 km SW of Ferndale, California · 18513 days ago · 24 km deep · 60 km away
  22. 2.111 km S of Ferndale, California · 18511 days ago · 21 km deep · 31 km away
  23. 4.072 km WSW of Ferndale, California · 18511 days ago · 10 km deep · 100 km away
  24. 2.029 km WSW of Ferndale, California · 18510 days ago · 23 km deep · 57 km away
  25. 1.84 km S of McKinleyville, California · 18504 days ago · 18 km deep · 40 km away
  26. 3.65 km ESE of Burnt Ranch, California · 18503 days ago · 22 km deep · 49 km away
  27. 2.722 km SSW of Ferndale, California · 18496 days ago · 17 km deep · 43 km away

Before

  1. 1.833 km NNE of Willow Creek, California · 18547 days ago · 38 km deep · 80 km away
  2. 2.244 km SSW of Ferndale, California · 18548 days ago · 7 km deep · 64 km away
  3. 1.88 km NW of Mad River, California · 18548 days ago · 6 km deep · 30 km away
  4. 1.732 km SSW of Ferndale, California · 18550 days ago · 22 km deep · 53 km away
  5. 1.528 km SW of Ferndale, CA · 18554 days ago · 26 km deep · 54 km away
  6. 1.930 km SW of Ferndale, California · 18556 days ago · 17 km deep · 55 km away
  7. 2.219 km W of Ferndale, California · 18556 days ago · 23 km deep · 48 km away
  8. 3.562 km W of Ferndale, California · 18556 days ago · 49 km deep · 91 km away
  9. 1.84 km ENE of Benbow, California · 18560 days ago · 16 km deep · 57 km away
  10. 1.618 km SSW of Scotia, California · 18561 days ago · 35 km deep · 36 km away
  11. 1.614 km NE of Myers Flat, California · 18562 days ago · 27 km deep · 28 km away
  12. 1.639 km W of Indianola, California · 18562 days ago · 21 km deep · 67 km away
  13. 1.93 km W of Ferndale, California · 18563 days ago · 23 km deep · 32 km away
  14. 1.818 km SSW of Willow Creek, California · 18564 days ago · 0 km deep · 30 km away
  15. 2.6near the coast of Northern California · 18567 days ago · 23 km deep · 63 km away
  16. 1.841 km W of Ferndale, California · 18567 days ago · 28 km deep · 70 km away
  17. 1.625 km SW of Ferndale, California · 18571 days ago · 22 km deep · 48 km away
  18. 1.815 km W of Ferndale, California · 18572 days ago · 22 km deep · 44 km away
  19. 1.710 km N of Redcrest, California · 18572 days ago · 20 km deep · 9 km away
  20. 1.631 km SW of Ferndale, California · 18574 days ago · 20 km deep · 56 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1028016. Read Thu, Oct 1, 2026, 2:07 AM UTC.