M1.7 earthquake 12km W of Fall River Mills, CA

Magnitude

1.7 (Md, duration), micro

Magnitude from

Northern California Seismic System

Local time

Tue, Jul 27, 2021, 4:21 AM PDT

UTC

2021-07-27 11:21:24 UTC

Depth

-0.3 km (-0.2 mi), shallow

Epicenter

41.008° N, 121.585° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.8 km horizontally, 0.5 km in depth

Magnitude uncertainty

±0.16

Depth from

From location

Station coverage gap

224°, poorly surrounded by stations

Stations used

12

• Fall River Mills, CaliforniaPopulation 573. Forecast12 kmW
• Shasta Lake, CaliforniaPopulation 10,159. Forecast75 kmENE
• Chico, CaliforniaPopulation 121,345. Forecast144 kmN
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast828 kmNNW

After

1. 1.923km ESE of McArthur, CAMon, Aug 2, 10:18 PM PDT · 1888 days ago · 19 km deep · 37 km away
2. 1.94km NNE of Prattville, CAFri, Aug 6, 12:49 AM PDT · 1885 days ago · 5 km deep · 93 km away
3. 1.511km SW of Chester, CAFri, Aug 6, 7:31 PM PDT · 1884 days ago · 6 km deep · 90 km away
4. 1.916km NW of Big Bend, CASun, Aug 8, 2:32 PM PDT · 1883 days ago · 9 km deep · 41 km away
5. 1.614km NE of Mineral, CATue, Aug 10, 3:40 AM PDT · 1881 days ago · 7 km deep · 66 km away
6. 1.714km N of Big Bend, CASun, Aug 15, 6:41 AM PDT · 1876 days ago · 9 km deep · 30 km away
7. 1.911km NNE of Mineral, CAMon, Aug 16, 11:47 PM PDT · 1874 days ago · 4 km deep · 62 km away
8. 1.910km NNE of Mineral, CAMon, Aug 16, 11:47 PM PDT · 1874 days ago · 3 km deep · 63 km away
9. 1.510km NNE of Mineral, CAMon, Aug 16, 11:47 PM PDT · 1874 days ago · 2 km deep · 63 km away
10. 1.711km NNE of Mineral, CAMon, Aug 16, 11:51 PM PDT · 1874 days ago · 4 km deep · 62 km away
11. 1.611km NNE of Mineral, CAMon, Aug 16, 11:54 PM PDT · 1874 days ago · 4 km deep · 62 km away
12. 1.610km NNE of Mineral, CATue, Aug 17, 6:37 AM PDT · 1874 days ago · 3 km deep · 63 km away
13. 1.615km SSW of Mineral, CAThu, Aug 19, 3:24 AM PDT · 1872 days ago · 4 km deep · 86 km away
14. 1.615km SSW of Mineral, CAThu, Aug 19, 3:29 AM PDT · 1872 days ago · 5 km deep · 86 km away
15. 1.63km S of East Shore, CASat, Aug 21, 2:12 PM PDT · 1870 days ago · 6 km deep · 98 km away
16. 1.56km ESE of Bella Vista, CATue, Aug 24, 11:09 PM PDT · 1866 days ago · 14 km deep · 66 km away
17. 1.62km W of Palo Cedro, CASun, Aug 29, 10:18 PM PDT · 1861 days ago · 14 km deep · 75 km away
18. 1.72km WSW of Palo Cedro, CAFri, Sep 3, 2:51 AM PDT · 1857 days ago · 18 km deep · 76 km away
19. 1.61km SW of Palo Cedro, CAMon, Sep 6, 9:04 AM PDT · 1854 days ago · 13 km deep · 75 km away
20. 1.51km NW of Palo Cedro, CAMon, Sep 6, 8:45 PM PDT · 1853 days ago · 15 km deep · 74 km away
21. 1.63km WSW of Shasta Lake, CATue, Sep 7, 9:09 AM PDT · 1853 days ago · 17 km deep · 78 km away
22. 1.51km NW of Palo Cedro, CATue, Sep 7, 4:15 PM PDT · 1852 days ago · 16 km deep · 74 km away
23. 1.912km ESE of Viola, CAWed, Sep 8, 12:40 PM PDT · 1852 days ago · 5 km deep · 59 km away
24. 1.64km W of Shasta Lake, CAThu, Sep 9, 6:27 PM PDT · 1850 days ago · 19 km deep · 79 km away
25. 1.79km E of Carrick, CAFri, Sep 10, 3:01 AM PDT · 1850 days ago · 6 km deep · 74 km away
26. 1.615km NNE of Mineral, CASat, Sep 11, 2:16 AM PDT · 1849 days ago · 3 km deep · 60 km away
27. 2.10km S of Palo Cedro, CASun, Sep 12, 1:49 PM PDT · 1848 days ago · 15 km deep · 74 km away · felt by 1
28. 1.815km NE of McCloud, CAMon, Sep 13, 6:39 AM PDT · 1847 days ago · 2 km deep · 54 km away
29. 1.72km SW of Palo Cedro, CAMon, Sep 13, 9:51 AM PDT · 1847 days ago · 14 km deep · 76 km away
30. 1.66km NE of Dunsmuir, CAWed, Sep 22, 1:22 AM PDT · 1838 days ago · 12 km deep · 59 km away
31. 1.76km NE of Dunsmuir, CAWed, Sep 22, 1:41 AM PDT · 1838 days ago · 12 km deep · 60 km away
32. 1.86km NE of Dunsmuir, CAWed, Sep 22, 1:55 AM PDT · 1838 days ago · 12 km deep · 59 km away
33. 1.76km W of McCloud, CAWed, Sep 22, 1:56 AM PDT · 1838 days ago · 12 km deep · 59 km away
34. 1.56km NE of Dunsmuir, CAWed, Sep 22, 2:17 AM PDT · 1838 days ago · 11 km deep · 61 km away
35. 2.06km NE of Dunsmuir, CAWed, Sep 22, 2:24 AM PDT · 1838 days ago · 12 km deep · 60 km away
36. 1.910km WSW of Chester, CAThu, Sep 23, 2:43 AM PDT · 1837 days ago · 9 km deep · 86 km away
37. 1.99km SSE of McCloud, CAThu, Sep 23, 7:46 PM PDT · 1836 days ago · 4 km deep · 48 km away
38. 1.56km NNE of Millville, CAFri, Sep 24, 11:39 AM PDT · 1836 days ago · 13 km deep · 65 km away

Before

1. 1.98km NNE of McCloud, CAFri, Jul 23, 12:32 PM PDT · 1899 days ago · 7 km deep · 56 km away
2. 2.011km N of Tennant, CAThu, Jul 22, 12:53 PM PDT · 1900 days ago · -1 km deep · 79 km away
3. 1.821km ENE of McCloud, CAThu, Jul 22, 9:23 AM PDT · 1900 days ago · 2 km deep · 43 km away
4. 1.615km SSE of McCloud, CAMon, Jul 19, 9:33 AM PDT · 1903 days ago · 7 km deep · 41 km away
5. 1.85km SSE of Mineral, CASat, Jul 17, 5:44 AM PDT · 1905 days ago · 11 km deep · 76 km away
6. 2.018km ESE of Anderson, CASat, Jul 17, 12:15 AM PDT · 1905 days ago · 13 km deep · 80 km away
7. 2.221km ENE of McCloud, CATue, Jul 13, 11:53 AM PDT · 1909 days ago · 2 km deep · 43 km away
8. 1.74km SSE of Mineral, CATue, Jul 13, 11:05 AM PDT · 1909 days ago · 3 km deep · 77 km away
9. 2.548km NNW of Susanville, CASun, Jul 4, 6:03 PM PDT · 1917 days ago · 14 km deep · 63 km away
10. 1.813km ENE of Carrick, CAThu, Jul 1, 10:15 AM PDT · 1921 days ago · 6 km deep · 74 km away
11. 1.610km WSW of Round Mountain, CATue, Jun 29, 2:23 PM PDT · 1923 days ago · 12 km deep · 47 km away
12. 1.78km WNW of Chester, CAMon, Jun 28, 8:44 PM PDT · 1923 days ago · 6 km deep · 77 km away
13. 1.515km ENE of Mineral, CAMon, Jun 28, 12:28 PM PDT · 1924 days ago · 5 km deep · 70 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc73600341. Read Sun, Oct 4, 2026, 9:37 AM UTC.