M1.9 earthquake 9km W of Caribou, CA

Magnitude

1.9 (Md, duration), micro

Magnitude from

Northern California Seismic System

Local time

Thu, Aug 19, 2021, 9:51 PM PDT

UTC

2021-08-20 04:51:08 UTC

Depth

8.7 km (5.4 mi), shallow

Epicenter

40.090° N, 121.264° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.2 km horizontally, 1.0 km in depth

Magnitude uncertainty

±0.10

Depth from

From location

Station coverage gap

56°

Stations used

26

• Chester, CaliforniaPopulation 2,144. Forecast24 kmS
• Magalia, CaliforniaPopulation 11,310. Forecast41 kmNE
• Chico, CaliforniaPopulation 121,345. Forecast63 kmNE
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast723 kmNNW

After

1. 1.63km S of East Shore, CASat, Aug 21, 2:12 PM PDT · 1870 days ago · 6 km deep · 21 km away
2. 1.914km S of Hamilton City, CAMon, Aug 23, 9:08 PM PDT · 1867 days ago · 22 km deep · 82 km away
3. 1.56km ESE of Bella Vista, CATue, Aug 24, 11:09 PM PDT · 1866 days ago · 14 km deep · 97 km away
4. 1.735km WNW of Truckee, CAThu, Aug 26, 10:10 PM PDT · 1864 days ago · 7 km deep · 96 km away
5. 1.62km W of Palo Cedro, CASun, Aug 29, 10:18 PM PDT · 1861 days ago · 14 km deep · 100 km away
6. 1.95km N of Lake Wildwood, CAMon, Aug 30, 10:10 PM PDT · 1860 days ago · 1 km deep · 91 km away · felt by 3
7. 2.811km NNE of Lake Davis, CAThu, Sep 2, 9:54 PM PDT · 1857 days ago · 12 km deep · 71 km away · felt by 13
8. 1.72km WSW of Palo Cedro, CAFri, Sep 3, 2:51 AM PDT · 1857 days ago · 18 km deep · 99 km away
9. 1.84km NNE of Hamilton City, CASat, Sep 4, 11:30 AM PDT · 1856 days ago · 14 km deep · 71 km away
10. 1.61km SW of Palo Cedro, CAMon, Sep 6, 9:04 AM PDT · 1854 days ago · 13 km deep · 98 km away
11. 1.51km NW of Palo Cedro, CAMon, Sep 6, 8:45 PM PDT · 1853 days ago · 15 km deep · 99 km away
12. 1.51km NW of Palo Cedro, CATue, Sep 7, 4:15 PM PDT · 1853 days ago · 16 km deep · 99 km away
13. 1.912km ESE of Viola, CAWed, Sep 8, 12:40 PM PDT · 1852 days ago · 5 km deep · 49 km away
14. 1.615km NNE of Mineral, CASat, Sep 11, 2:16 AM PDT · 1849 days ago · 3 km deep · 47 km away
15. 2.10km S of Palo Cedro, CASun, Sep 12, 1:49 PM PDT · 1848 days ago · 15 km deep · 98 km away · felt by 1
16. 1.72km SW of Palo Cedro, CAMon, Sep 13, 9:51 AM PDT · 1847 days ago · 14 km deep · 98 km away
17. 2.55km NNE of Hamilton City, CAFri, Sep 17, 10:07 AM PDT · 1843 days ago · 19 km deep · 70 km away · felt by 1
18. 2.14km SE of Taylorsville, CASat, Sep 18, 6:38 AM PDT · 1842 days ago · 0 km deep · 40 km away
19. 2.56km NW of Chico, CASun, Sep 19, 5:27 AM PDT · 1841 days ago · 29 km deep · 64 km away
20. 1.910km WSW of Chester, CAThu, Sep 23, 2:43 AM PDT · 1837 days ago · 9 km deep · 20 km away
21. 1.56km NNE of Millville, CAFri, Sep 24, 11:39 AM PDT · 1836 days ago · 13 km deep · 95 km away
22. 2.24km ENE of Prattville, CASun, Sep 26, 12:44 AM PDT · 1834 days ago · 8 km deep · 19 km away
23. 1.512km ESE of Viola, CAWed, Sep 29, 2:22 PM PDT · 1831 days ago · 3 km deep · 49 km away
24. 2.09km WSW of Chester, CAThu, Sep 30, 6:37 AM PDT · 1830 days ago · 1 km deep · 21 km away
25. 1.512km ESE of Viola, CAFri, Oct 1, 7:13 AM PDT · 1829 days ago · 4 km deep · 48 km away
26. 1.99km WSW of Chester, CAFri, Oct 1, 12:38 PM PDT · 1829 days ago · 4 km deep · 21 km away
27. 1.616km N of Shingletown, CAWed, Oct 13, 7:24 AM PDT · 1817 days ago · 11 km deep · 80 km away · felt by 1
28. 1.913km WSW of Almanor, CAWed, Oct 13, 1:01 PM PDT · 1817 days ago · 9 km deep · 10 km away
29. 2.96km NNE of Hamilton City, CASun, Oct 17, 9:50 AM PDT · 1813 days ago · 17 km deep · 71 km away

Before

1. 1.615km SSW of Mineral, CAThu, Aug 19, 3:29 AM PDT · 1872 days ago · 5 km deep · 36 km away
2. 1.615km SSW of Mineral, CAThu, Aug 19, 3:24 AM PDT · 1872 days ago · 4 km deep · 36 km away
3. 1.610km NNE of Mineral, CATue, Aug 17, 6:37 AM PDT · 1874 days ago · 3 km deep · 46 km away
4. 1.611km NNE of Mineral, CAMon, Aug 16, 11:54 PM PDT · 1874 days ago · 4 km deep · 46 km away
5. 1.711km NNE of Mineral, CAMon, Aug 16, 11:51 PM PDT · 1874 days ago · 4 km deep · 46 km away
6. 1.510km NNE of Mineral, CAMon, Aug 16, 11:47 PM PDT · 1874 days ago · 2 km deep · 45 km away
7. 1.910km NNE of Mineral, CAMon, Aug 16, 11:47 PM PDT · 1874 days ago · 3 km deep · 46 km away
8. 1.911km NNE of Mineral, CAMon, Aug 16, 11:47 PM PDT · 1874 days ago · 4 km deep · 46 km away
9. 2.17km N of Greenhorn, CASun, Aug 15, 5:40 PM PDT · 1876 days ago · 7 km deep · 47 km away
10. 2.615km E of Willows, CAThu, Aug 12, 4:35 AM PDT · 1879 days ago · 26 km deep · 90 km away · felt by 4
11. 1.614km NE of Mineral, CATue, Aug 10, 3:40 AM PDT · 1881 days ago · 7 km deep · 40 km away
12. 1.511km SW of Chester, CAFri, Aug 6, 7:31 PM PDT · 1885 days ago · 6 km deep · 16 km away
13. 1.94km NNE of Prattville, CAFri, Aug 6, 12:49 AM PDT · 1885 days ago · 5 km deep · 20 km away
14. 2.616km E of Willows, CAMon, Aug 2, 6:02 PM PDT · 1889 days ago · 25 km deep · 91 km away · felt by 1
15. 2.11km WNW of Lake Davis, CASun, Aug 1, 2:00 AM PDT · 1890 days ago · 6 km deep · 71 km away
16. 2.316km E of Willows, CASat, Jul 24, 1:54 AM PDT · 1898 days ago · 17 km deep · 88 km away
17. 2.16km N of Hamilton City, CAThu, Jul 22, 3:39 AM PDT · 1900 days ago · 15 km deep · 71 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc73612271. Read Sun, Oct 4, 2026, 2:29 PM UTC.