California earthquakes

M1.9 earthquake 22 km ESE of Orick, California

A magnitude 1.9 earthquake struck 22 km ESE of Orick, California on Sat, Aug 31, 1985, 11:33 PM PDT (06:33 UTC), 4 km (2 mi) below the surface.

A larger quake followed: M3.7 22 km NW of Mad River, 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
1.9 (md), micro
Local time
UTC
1985-09-01 06:33:51 UTC
Depth
3.7 km (2.3 mi), shallow
Epicenter
41.193° N, 123.819° 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 3.5 km horizontally, 20.0 km in depth
Depth from
From location
Station coverage gap
93°
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: 22 in the 60 days after this one and 4 in the 30 days before it.

After

  1. 2.4near the coast of Northern California · 15003 days ago · 13 km deep · 86 km away
  2. 3.722 km NW of Mad River, California · 15002 days ago · 23 km deep · 69 km away
  3. 2.024 km WSW of Ferndale, California · 15002 days ago · 26 km deep · 100 km away
  4. 2.59 km SSW of Hyampom, California · 15000 days ago · 5 km deep · 76 km away
  5. 2.121 km W of Hyampom, California · 14999 days ago · 22 km deep · 62 km away
  6. 1.622 km W of Hyampom, California · 14999 days ago · 4 km deep · 68 km away
  7. 1.620 km W of Hyampom, California · 14999 days ago · 18 km deep · 65 km away
  8. 2.214 km SW of Trinity Center, California · 14993 days ago · 8 km deep · 90 km away
  9. 2.210 km SW of Scotia, California · 14980 days ago · 12 km deep · 92 km away
  10. 2.04 km NE of Hydesville, California · 14978 days ago · 25 km deep · 71 km away
  11. 1.84 km N of Hydesville, California · 14975 days ago · 19 km deep · 71 km away
  12. 1.619 km SSW of Ferndale, California · 14975 days ago · 26 km deep · 97 km away
  13. 1.818 km SSW of Ferndale, California · 14975 days ago · 26 km deep · 97 km away
  14. 2.14 km ESE of Fortuna, California · 14970 days ago · 22 km deep · 71 km away
  15. 2.221 km WSW of Ferndale, California · 14970 days ago · 22 km deep · 98 km away
  16. 2.422 km NW of Mad River, California · 14969 days ago · 23 km deep · 69 km away
  17. 3.666 km WSW of Crescent City, California · 14965 days ago · 36 km deep · 96 km away
  18. 2.625 km SE of Blue Lake, California · 14955 days ago · 53 km deep · 53 km away
  19. 2.312 km SW of Scotia, California · 14954 days ago · 6 km deep · 94 km away
  20. 3.622 km WNW of Indianola, California · 14949 days ago · 21 km deep · 76 km away
  21. 2.98 km WNW of McKinleyville, California · 14945 days ago · 18 km deep · 39 km away
  22. 1.917 km NW of Willow Creek, California · 14944 days ago · -1 km deep · 15 km away

Before

  1. 2.419 km SSE of Blue Lake, California · 15006 days ago · 24 km deep · 52 km away
  2. 2.111 km WNW of Hyampom, California · 15010 days ago · 20 km deep · 64 km away
  3. 3.725 km NNW of Junction City, California · 15029 days ago · 28 km deep · 60 km away
  4. 2.56 km E of Hayfork, California · 15032 days ago · 28 km deep · 93 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc55351. Read Tue, Sep 29, 2026, 10:29 PM UTC.