California earthquakes

M2.1 earthquake 6 km ENE of Hayfork, California

A magnitude 2.1 earthquake struck 6 km ENE of Hayfork, California on Mon, Sep 8, 1986, 8:31 AM PDT (15:31 UTC), 8 km (5 mi) below the surface.

A larger quake followed: M4.1 4 km SSE of Benbow, California. This one was a foreshock.

Hayfork 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
2.1 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
1986-09-08 15:31:29 UTC
Depth
8.2 km (5.1 mi), shallow
Epicenter
40.566° N, 123.113° 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 5.2 km horizontally, 2.5 km in depth
Magnitude uncertainty
±0.07
Depth from
From location
Station coverage gap
265°, poorly surrounded by stations
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: 28 in the 60 days after this one and 10 in the 30 days before it.

After

  1. 2.717 km WSW of Burnt Ranch, California · 14635 days ago · 4 km deep · 50 km away
  2. 2.43 km NE of Hydesville, California · 14634 days ago · 4 km deep · 80 km away
  3. 1.79 km E of Millville, California · 14629 days ago · 11 km deep · 89 km away
  4. 1.534 km SSW of Etna, California · 14627 days ago · 4 km deep · 70 km away
  5. 1.916 km E of Covelo, California · 14625 days ago · -1 km deep · 87 km away
  6. 1.66 km SE of Shasta Lake, California · 14624 days ago · 20 km deep · 67 km away
  7. 1.52 km W of Bella Vista, California · 14624 days ago · 5 km deep · 72 km away
  8. 2.626 km SSW of Etna, California · 14619 days ago · 22 km deep · 74 km away
  9. 2.610 km WSW of Rio Dell, California · 14619 days ago · 26 km deep · 95 km away
  10. 2.510 km W of Rio Dell, California · 14619 days ago · 25 km deep · 95 km away
  11. 2.622 km WSW of Weott, California · 14617 days ago · 9 km deep · 96 km away
  12. 2.722 km WSW of Weott, California · 14617 days ago · 9 km deep · 96 km away
  13. 1.618 km ESE of Coffee Creek, California · 14611 days ago · 1 km deep · 75 km away
  14. 2.715 km SW of Scotia, California · 14606 days ago · 23 km deep · 98 km away
  15. 1.914 km NNE of Alderpoint, California · 14605 days ago · 10 km deep · 47 km away
  16. 3.26 km WSW of Covelo, California · 14603 days ago · 19 km deep · 90 km away
  17. 2.528 km ENE of Covelo, California · 14601 days ago · 6 km deep · 77 km away
  18. 2.22 km SSE of Covelo, California · 14598 days ago · 4 km deep · 89 km away
  19. 2.96 km WSW of Redcrest, California · 14598 days ago · 4 km deep · 79 km away
  20. 2.96 km W of Redcrest, California · 14598 days ago · 4 km deep · 79 km away
  21. 1.63 km NNE of Garberville, California · 14590 days ago · 13 km deep · 74 km away
  22. 2.110 km WSW of Scotia, California · 14589 days ago · 16 km deep · 94 km away
  23. 2.024 km ENE of Hydesville, California · 14584 days ago · 5 km deep · 62 km away
  24. 2.38 km NNE of Mad River, California · 14584 days ago · 3 km deep · 32 km away
  25. 1.915 km WSW of Weott, California · 14581 days ago · 2 km deep · 90 km away
  26. 1.911 km ESE of Leggett, California · 14580 days ago · 5 km deep · 90 km away
  27. 4.14 km SSE of Benbow, California · 14578 days ago · 37 km deep · 81 km away
  28. 2.116 km ENE of Covelo, California · 14577 days ago · 4 km deep · 82 km away

Before

  1. 2.10 km SSE of Rio Dell, California · 14638 days ago · 20 km deep · 84 km away
  2. 2.64 km S of Mad River, California · 14638 days ago · 21 km deep · 39 km away
  3. 3.48 km W of Willow Creek, California · 14642 days ago · 19 km deep · 67 km away
  4. 1.911 km SE of Indianola, California · 14644 days ago · 2 km deep · 76 km away
  5. 2.125 km SE of Indianola, California · 14644 days ago · 14 km deep · 62 km away
  6. 1.839 km ESE of Ruth, California · 14644 days ago · 12 km deep · 47 km away
  7. 2.01 km SSW of Fieldbrook, California · 14648 days ago · 4 km deep · 89 km away
  8. 2.19 km SE of Covelo, California · 14649 days ago · 4 km deep · 93 km away
  9. 1.77 km SSE of Millville, California · 14657 days ago · 4 km deep · 83 km away
  10. 3.76 km ENE of Garberville, California · 14661 days ago · 22 km deep · 72 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc10086742. Read Sun, Oct 4, 2026, 8:41 AM UTC.