California earthquakes

M1.7 earthquake 21 km SW of Edgewood, California

A magnitude 1.7 earthquake struck 21 km SW of Edgewood, California on Mon, Sep 9, 1985, 2:03 PM PDT (21:03 UTC), 4 km (2 mi) below the surface.

A larger quake followed: M2.8 1 km ENE of Lakehead, 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
1.7 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
1985-09-09 21:03:46 UTC
Depth
3.7 km (2.3 mi), shallow
Epicenter
41.314° N, 122.598° 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, 7.1 km in depth
Magnitude uncertainty
±0.24
Depth from
From location
Station coverage gap
276°, poorly surrounded by stations
Stations used
5

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 17 in the 60 days after this one and 8 in the 30 days before it.

After

  1. 2.32 km NE of Anderson, California · 14996 days ago · 61 km deep · 98 km away
  2. 2.19 km ESE of Carrick, California · 14995 days ago · -2 km deep · 32 km away
  3. 2.214 km SW of Trinity Center, California · 14995 days ago · 8 km deep · 50 km away
  4. 1.75 km NNE of Tennant, California · 14994 days ago · 6 km deep · 69 km away
  5. 2.27 km SE of Millville, California · 14993 days ago · 19 km deep · 99 km away
  6. 2.37 km SSE of Trinity Center, California · 14987 days ago · 4 km deep · 44 km away
  7. 1.624 km NW of McArthur, California · 14987 days ago · 4 km deep · 84 km away
  8. 1.813 km N of French Gulch, California · 14975 days ago · 40 km deep · 54 km away
  9. 2.115 km SE of McCloud, California · 14973 days ago · 11 km deep · 52 km away
  10. 2.27 km NE of Redding, California · 14972 days ago · 29 km deep · 80 km away
  11. 1.713 km ESE of Grenada, California · 14964 days ago · 3 km deep · 36 km away
  12. 1.612 km ESE of Grenada, California · 14964 days ago · 3 km deep · 37 km away
  13. 1.99 km NNW of Cassel, California · 14951 days ago · 16 km deep · 91 km away
  14. 2.61 km ESE of Lakehead, California · 14944 days ago · 19 km deep · 50 km away
  15. 2.81 km ENE of Lakehead, California · 14944 days ago · 18 km deep · 49 km away
  16. 2.18 km NNE of Trinity Village, California · 14942 days ago · 23 km deep · 86 km away
  17. 1.521 km W of Trinity Center, California · 14941 days ago · 20 km deep · 49 km away

Before

  1. 1.74 km SE of Montgomery Creek, California · 14997 days ago · 17 km deep · 81 km away
  2. 1.69 km WNW of Anderson, California · 15002 days ago · 6 km deep · 93 km away
  3. 1.816 km ESE of Grenada, California · 15003 days ago · 0 km deep · 38 km away
  4. 1.613 km E of Carrick, California · 15013 days ago · 3 km deep · 37 km away
  5. 2.18 km ESE of Carrick, California · 15014 days ago · -2 km deep · 31 km away
  6. 2.113 km ESE of Carrick, California · 15014 days ago · 2 km deep · 35 km away
  7. 1.96km ESE of Millville, CA · 15015 days ago · 17 km deep · 95 km away
  8. 2.18km NNW of French Gulch, CA · 15024 days ago · 19 km deep · 60 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc55745. Read Thu, Oct 1, 2026, 11:41 AM UTC.