California earthquakes

M1.6 earthquake 22 km W of Hyampom, California

A magnitude 1.6 earthquake struck 22 km W of Hyampom, California on Thu, Sep 5, 1985, 8:00 PM PDT (03:00 UTC), 4 km (2 mi) below the surface.

A larger quake followed: M3.6 22 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
1.6 (md), micro
Local time
UTC
1985-09-06 03:00:37 UTC
Depth
4.0 km (2.5 mi), shallow
Epicenter
40.589° N, 123.721° 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 1.2 km horizontally, 8.2 km in depth
Magnitude uncertainty
±0.09
Depth from
From location
Station coverage gap
184°, 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: 40 in the 60 days after this one and 22 in the 30 days before it.

After

  1. 1.620 km W of Hyampom, California · 14999 days ago · 18 km deep · 4 km away
  2. 2.938 km SW of Ferndale, California · 14999 days ago · 19 km deep · 78 km away
  3. 2.837 km SW of Ferndale, California · 14998 days ago · 21 km deep · 75 km away
  4. 2.654 km SW of Ferndale, California · 14995 days ago · 7 km deep · 95 km away
  5. 2.214 km SW of Trinity Center, California · 14994 days ago · 8 km deep · 83 km away
  6. 3.337 km SW of Ferndale, California · 14994 days ago · 2 km deep · 80 km away
  7. 2.37 km SSE of Trinity Center, California · 14986 days ago · 4 km deep · 96 km away
  8. 1.71 km SW of Redway, California · 14985 days ago · 19 km deep · 54 km away
  9. 2.210 km SW of Scotia, California · 14981 days ago · 12 km deep · 43 km away
  10. 1.648 km SW of Ferndale, California · 14979 days ago · 3 km deep · 90 km away
  11. 2.04 km NE of Hydesville, California · 14979 days ago · 25 km deep · 29 km away
  12. 1.831 km SSW of Ferndale, California · 14977 days ago · 4 km deep · 67 km away
  13. 2.541 km WSW of Ferndale, California · 14976 days ago · 16 km deep · 87 km away
  14. 1.84 km N of Hydesville, California · 14976 days ago · 19 km deep · 32 km away
  15. 1.619 km SSW of Ferndale, California · 14976 days ago · 26 km deep · 56 km away
  16. 1.818 km SSW of Ferndale, California · 14976 days ago · 26 km deep · 57 km away
  17. 1.835 km WSW of Ferndale, California · 14976 days ago · 25 km deep · 79 km away
  18. 1.813 km N of French Gulch, California · 14975 days ago · 40 km deep · 96 km away
  19. 3.329 km SE of Ruth, California · 14974 days ago · 42 km deep · 78 km away
  20. 2.14 km ESE of Fortuna, California · 14971 days ago · 22 km deep · 33 km away
  21. 1.722 km WSW of Weott, California · 14971 days ago · 9 km deep · 53 km away
  22. 2.221 km WSW of Ferndale, California · 14970 days ago · 22 km deep · 66 km away
  23. 2.422 km NW of Mad River, California · 14970 days ago · 23 km deep · 2 km away
  24. 1.925 km SW of Ferndale, California · 14970 days ago · 27 km deep · 67 km away
  25. 3.528 km SW of Ferndale, California · 14970 days ago · 16 km deep · 67 km away
  26. 1.714 km W of Ruth, California · 14966 days ago · -1 km deep · 41 km away
  27. 2.720 km SW of Weott, California · 14964 days ago · 4 km deep · 53 km away
  28. 2.041 km SW of Ferndale, California · 14964 days ago · 23 km deep · 84 km away
  29. 3.337 km SW of Ferndale, California · 14962 days ago · 25 km deep · 78 km away
  30. 1.631 km WNW of Paskenta, California · 14961 days ago · 10 km deep · 96 km away
  31. 2.625 km SE of Blue Lake, California · 14956 days ago · 53 km deep · 15 km away
  32. 2.312 km SW of Scotia, California · 14954 days ago · 6 km deep · 46 km away
  33. 3.622 km WNW of Indianola, California · 14950 days ago · 21 km deep · 67 km away
  34. 3.122 km WSW of Weott, California · 14949 days ago · 13 km deep · 54 km away
  35. 2.127 km E of Ruth, California · 14946 days ago · 25 km deep · 71 km away
  36. 2.98 km WNW of McKinleyville, California · 14946 days ago · 18 km deep · 58 km away
  37. 1.917 km NW of Willow Creek, California · 14945 days ago · -1 km deep · 54 km away
  38. 2.719 km WNW of Indianola, California · 14944 days ago · 20 km deep · 64 km away
  39. 2.18 km NNE of Trinity Village, California · 14942 days ago · 23 km deep · 45 km away
  40. 1.521 km W of Trinity Center, California · 14941 days ago · 20 km deep · 77 km away

Before

  1. 2.121 km W of Hyampom, California · 15000 days ago · 22 km deep · 7 km away
  2. 2.529 km SW of Ferndale, California · 15000 days ago · 16 km deep · 72 km away
  3. 2.58 km SE of Alderpoint, California · 15000 days ago · 3 km deep · 55 km away
  4. 2.59 km SSW of Hyampom, California · 15001 days ago · 5 km deep · 18 km away
  5. 1.616 km ENE of Leggett, California · 15002 days ago · 2 km deep · 78 km away
  6. 2.024 km WSW of Ferndale, California · 15003 days ago · 26 km deep · 68 km away
  7. 3.722 km NW of Mad River, California · 15003 days ago · 23 km deep · 1 km away
  8. 2.4near the coast of Northern California · 15004 days ago · 13 km deep · 56 km away
  9. 1.922 km ESE of Orick, California · 15005 days ago · 4 km deep · 68 km away
  10. 1.925 km SSW of Scotia, California · 15005 days ago · 7 km deep · 55 km away
  11. 2.419 km SSE of Blue Lake, California · 15006 days ago · 24 km deep · 20 km away
  12. 2.644 km WSW of Ferndale, California · 15009 days ago · 17 km deep · 87 km away
  13. 2.028 km SSW of Ferndale, California · 15010 days ago · 13 km deep · 65 km away
  14. 2.111 km WNW of Hyampom, California · 15011 days ago · 20 km deep · 13 km away
  15. 2.336 km SW of Ferndale, California · 15012 days ago · 20 km deep · 74 km away
  16. 1.935 km SW of Ferndale, California · 15015 days ago · 12 km deep · 73 km away
  17. 2.146 km W of Ferndale, California · 15016 days ago · 21 km deep · 92 km away
  18. 2.126 km SW of Scotia, California · 15019 days ago · 10 km deep · 60 km away
  19. 1.923 km SW of Scotia, California · 15022 days ago · 8 km deep · 57 km away
  20. 2.18km NNW of French Gulch, CA · 15024 days ago · 19 km deep · 92 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc55739. Read Wed, Sep 30, 2026, 6:13 PM UTC.