California earthquakes

M1.9 earthquake 23km ESE of McArthur, CA

A magnitude 1.9 earthquake struck 23km ESE of McArthur, CA on Mon, Aug 2, 2021, 10:18 PM PDT (05:18 UTC), 19 km (12 mi) below the surface.

A larger quake followed: M2.2 4km ENE of Prattville, CA. This one was a foreshock.

Fall River Mills 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
1.9 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
2021-08-03 05:18:27 UTC
Depth
18.9 km (11.8 mi), shallow
Epicenter
40.988° N, 121.141° 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 1.1 km horizontally, 1.0 km in depth
Magnitude uncertainty
±0.10
Depth from
From location
Station coverage gap
212°, poorly surrounded by stations
Stations used
13

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 32 in the 60 days after this one and 9 in the 30 days before it.

After

  1. 1.94km NNE of Prattville, CA · 1885 days ago · 5 km deep · 83 km away
  2. 1.511km SW of Chester, CA · 1884 days ago · 6 km deep · 86 km away
  3. 1.916km NW of Big Bend, CA · 1882 days ago · 9 km deep · 78 km away
  4. 1.614km NE of Mineral, CA · 1881 days ago · 7 km deep · 67 km away
  5. 1.714km N of Big Bend, CA · 1875 days ago · 9 km deep · 66 km away
  6. 1.911km NNE of Mineral, CA · 1874 days ago · 4 km deep · 68 km away
  7. 1.910km NNE of Mineral, CA · 1874 days ago · 3 km deep · 69 km away
  8. 1.510km NNE of Mineral, CA · 1874 days ago · 2 km deep · 69 km away
  9. 1.711km NNE of Mineral, CA · 1874 days ago · 4 km deep · 68 km away
  10. 1.611km NNE of Mineral, CA · 1874 days ago · 4 km deep · 68 km away
  11. 1.610km NNE of Mineral, CA · 1873 days ago · 3 km deep · 69 km away
  12. 1.615km SSW of Mineral, CA · 1872 days ago · 4 km deep · 94 km away
  13. 1.615km SSW of Mineral, CA · 1872 days ago · 5 km deep · 94 km away
  14. 1.63km S of East Shore, CA · 1869 days ago · 6 km deep · 86 km away
  15. 1.56km ESE of Bella Vista, CA · 1866 days ago · 14 km deep · 96 km away
  16. 1.912km ESE of Viola, CA · 1851 days ago · 5 km deep · 66 km away
  17. 1.615km NNE of Mineral, CA · 1849 days ago · 3 km deep · 64 km away
  18. 1.815km NE of McCloud, CA · 1846 days ago · 2 km deep · 85 km away
  19. 1.66km NE of Dunsmuir, CA · 1838 days ago · 12 km deep · 95 km away
  20. 1.76km NE of Dunsmuir, CA · 1838 days ago · 12 km deep · 96 km away
  21. 1.86km NE of Dunsmuir, CA · 1838 days ago · 12 km deep · 95 km away
  22. 1.76km W of McCloud, CA · 1838 days ago · 12 km deep · 94 km away
  23. 1.56km NE of Dunsmuir, CA · 1838 days ago · 11 km deep · 96 km away
  24. 2.06km NE of Dunsmuir, CA · 1838 days ago · 12 km deep · 96 km away
  25. 1.910km WSW of Chester, CA · 1837 days ago · 9 km deep · 82 km away
  26. 1.99km SSE of McCloud, CA · 1836 days ago · 4 km deep · 84 km away
  27. 1.56km NNE of Millville, CA · 1835 days ago · 13 km deep · 95 km away
  28. 2.24km ENE of Prattville, CA · 1834 days ago · 8 km deep · 85 km away
  29. 1.512km ESE of Viola, CA · 1830 days ago · 3 km deep · 67 km away
  30. 2.09km WSW of Chester, CA · 1829 days ago · 1 km deep · 81 km away
  31. 1.512km ESE of Viola, CA · 1828 days ago · 4 km deep · 67 km away
  32. 1.99km WSW of Chester, CA · 1828 days ago · 4 km deep · 81 km away

Before

  1. 1.712km W of Fall River Mills, CA · 1895 days ago · 0 km deep · 37 km away
  2. 1.98km NNE of McCloud, CA · 1898 days ago · 7 km deep · 90 km away
  3. 2.011km N of Tennant, CA · 1899 days ago · -1 km deep · 100 km away
  4. 1.821km ENE of McCloud, CA · 1899 days ago · 2 km deep · 73 km away
  5. 1.615km SSE of McCloud, CA · 1902 days ago · 7 km deep · 78 km away
  6. 1.85km SSE of Mineral, CA · 1904 days ago · 11 km deep · 81 km away
  7. 2.221km ENE of McCloud, CA · 1908 days ago · 2 km deep · 73 km away
  8. 1.74km SSE of Mineral, CA · 1908 days ago · 3 km deep · 82 km away
  9. 2.548km NNW of Susanville, CA · 1917 days ago · 14 km deep · 30 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc73604806. Read Sat, Oct 3, 2026, 11:33 PM UTC.