M1.7 earthquake 8km WNW of Chester, CA

Magnitude

1.7 (Md, duration), micro

Magnitude from

Northern California Seismic System

Local time

Mon, Jun 28, 2021, 8:44 PM PDT

UTC

2021-06-29 03:44:22 UTC

Depth

5.8 km (3.6 mi), shallow

Epicenter

40.344° N, 121.316° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.4 km horizontally, 0.9 km in depth

Magnitude uncertainty

±0.15

Depth from

From location

Station coverage gap

121°

Stations used

13

• Chester, CaliforniaPopulation 2,144. Forecast8 kmWNW
• Susanville, CaliforniaPopulation 15,247. Forecast57 kmW
• Chico, CaliforniaPopulation 121,345. Forecast82 kmNNE
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast751 kmNNW

After

1. 1.610km WSW of Round Mountain, CATue, Jun 29, 2:23 PM PDT · 1922 days ago · 12 km deep · 79 km away
2. 2.26km SSE of Quincy, CAWed, Jun 30, 3:24 PM PDT · 1921 days ago · 9 km deep · 61 km away
3. 1.56 km SSE of Quincy, CaliforniaThu, Jul 1, 10:22 PM PDT · 1920 days ago · 4 km deep · 61 km away
4. 2.548km NNW of Susanville, CASun, Jul 4, 6:03 PM PDT · 1917 days ago · 14 km deep · 64 km away
5. 1.85km W of Paradise, CAThu, Jul 8, 12:10 PM PDT · 1913 days ago · 0 km deep · 71 km away
6. 1.74km SSE of Mineral, CATue, Jul 13, 11:05 AM PDT · 1908 days ago · 3 km deep · 20 km away
7. 2.018km ESE of Anderson, CASat, Jul 17, 12:15 AM PDT · 1905 days ago · 13 km deep · 66 km away
8. 1.85km SSE of Mineral, CASat, Jul 17, 5:44 AM PDT · 1905 days ago · 11 km deep · 19 km away
9. 2.16km N of Hamilton City, CAThu, Jul 22, 3:39 AM PDT · 1900 days ago · 15 km deep · 85 km away
10. 1.712km W of Fall River Mills, CATue, Jul 27, 4:21 AM PDT · 1895 days ago · 0 km deep · 77 km away
11. 2.11km WNW of Lake Davis, CASun, Aug 1, 2:00 AM PDT · 1890 days ago · 6 km deep · 88 km away
12. 1.923km ESE of McArthur, CAMon, Aug 2, 10:18 PM PDT · 1888 days ago · 19 km deep · 73 km away
13. 1.94km NNE of Prattville, CAFri, Aug 6, 12:49 AM PDT · 1885 days ago · 5 km deep · 19 km away
14. 1.511km SW of Chester, CAFri, Aug 6, 7:31 PM PDT · 1884 days ago · 6 km deep · 13 km away
15. 1.614km NE of Mineral, CATue, Aug 10, 3:40 AM PDT · 1881 days ago · 7 km deep · 13 km away
16. 2.17km N of Greenhorn, CASun, Aug 15, 5:40 PM PDT · 1875 days ago · 7 km deep · 65 km away
17. 1.911km NNE of Mineral, CAMon, Aug 16, 11:47 PM PDT · 1874 days ago · 4 km deep · 21 km away
18. 1.910km NNE of Mineral, CAMon, Aug 16, 11:47 PM PDT · 1874 days ago · 3 km deep · 22 km away
19. 1.510km NNE of Mineral, CAMon, Aug 16, 11:47 PM PDT · 1874 days ago · 2 km deep · 21 km away
20. 1.711km NNE of Mineral, CAMon, Aug 16, 11:51 PM PDT · 1874 days ago · 4 km deep · 21 km away
21. 1.611km NNE of Mineral, CAMon, Aug 16, 11:54 PM PDT · 1874 days ago · 4 km deep · 21 km away
22. 1.610km NNE of Mineral, CATue, Aug 17, 6:37 AM PDT · 1873 days ago · 3 km deep · 21 km away
23. 1.615km SSW of Mineral, CAThu, Aug 19, 3:24 AM PDT · 1872 days ago · 4 km deep · 30 km away
24. 1.615km SSW of Mineral, CAThu, Aug 19, 3:29 AM PDT · 1872 days ago · 5 km deep · 30 km away
25. 1.99km W of Caribou, CAThu, Aug 19, 9:51 PM PDT · 1871 days ago · 9 km deep · 29 km away
26. 1.63km S of East Shore, CASat, Aug 21, 2:12 PM PDT · 1869 days ago · 6 km deep · 25 km away
27. 1.56km ESE of Bella Vista, CATue, Aug 24, 11:09 PM PDT · 1866 days ago · 14 km deep · 79 km away

Before

1. 1.515km ENE of Mineral, CAMon, Jun 28, 12:28 PM PDT · 1923 days ago · 5 km deep · 9 km away
2. 1.614km NNE of Mineral, CASat, Jun 26, 3:20 AM PDT · 1926 days ago · 3 km deep · 22 km away
3. 1.54km S of Canyondam, CAFri, Jun 25, 3:14 PM PDT · 1926 days ago · 4 km deep · 31 km away
4. 1.919km NW of McArthur, CAFri, Jun 25, 12:24 AM PDT · 1927 days ago · 4 km deep · 93 km away
5. 2.110km W of Almanor, CATue, Jun 22, 3:26 PM PDT · 1929 days ago · 8 km deep · 15 km away
6. 2.111km W of Almanor, CAMon, Jun 21, 10:22 PM PDT · 1930 days ago · 5 km deep · 15 km away
7. 1.514km N of Shingletown, CASun, Jun 20, 6:25 PM PDT · 1931 days ago · 12 km deep · 58 km away
8. 1.514km WSW of Almanor, CAFri, Jun 18, 1:55 PM PDT · 1933 days ago · 11 km deep · 21 km away
9. 1.62km E of Palo Cedro, CAFri, Jun 18, 6:32 AM PDT · 1933 days ago · 6 km deep · 80 km away
10. 1.613km SW of Almanor, CAWed, Jun 16, 7:58 PM PDT · 1935 days ago · 9 km deep · 22 km away
11. 1.51km WSW of Canyondam, CATue, Jun 15, 1:00 PM PDT · 1936 days ago · 10 km deep · 28 km away
12. 1.56km NNE of Millville, CATue, Jun 15, 10:06 AM PDT · 1936 days ago · 12 km deep · 77 km away
13. 2.112km NNE of Shasta Lake, CASun, Jun 13, 4:11 AM PDT · 1939 days ago · 21 km deep · 97 km away
14. 2.02km SW of McArthur, CASat, Jun 12, 1:04 PM PDT · 1939 days ago · 12 km deep · 77 km away
15. 2.14km SSW of East Shore, CAWed, Jun 9, 6:25 PM PDT · 1942 days ago · 5 km deep · 25 km away
16. 2.32km N of Canyondam, CAWed, Jun 9, 4:56 PM PDT · 1942 days ago · 5 km deep · 27 km away
17. 1.80 km S of Lake Davis, CaliforniaWed, Jun 9, 2:36 AM PDT · 1943 days ago · 7 km deep · 89 km away
18. 1.63km ENE of Prattville, CAFri, Jun 4, 6:17 PM PDT · 1947 days ago · 7 km deep · 21 km away
19. 1.74km NNE of Canyondam, CATue, Jun 1, 10:07 AM PDT · 1950 days ago · 8 km deep · 27 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc73580761. Read Sun, Oct 4, 2026, 12:13 AM UTC.