M1.5 earthquake 13km N of Brooktrails, CA

Magnitude

1.5 (Md, duration), micro

Magnitude from

Northern California Seismic System

Local time

Fri, Sep 3, 2021, 5:53 PM PDT

UTC

2021-09-04 00:53:11 UTC

Depth

8.2 km (5.1 mi), shallow

Epicenter

39.557° N, 123.403° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.3 km horizontally, 0.5 km in depth

Magnitude uncertainty

±0.12

Depth from

From location

Station coverage gap

97°

Stations used

17

• Brooktrails, CaliforniaPopulation 3,235. Forecast13 kmN
• Ukiah, CaliforniaPopulation 15,917. Forecast48 kmNNW
• Chico, CaliforniaPopulation 121,345. Forecast135 kmW
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast765 kmNW

After

1. 1.74km ENE of Talmage, CASat, Sep 4, 12:21 AM PDT · 1857 days ago · 6 km deep · 52 km away
2. 3.74km ENE of Talmage, CASat, Sep 4, 10:27 PM PDT · 1856 days ago · 10 km deep · 52 km away · felt by 199
3. 1.80km SW of Laytonville, CAMon, Sep 6, 9:02 AM PDT · 1855 days ago · 5 km deep · 16 km away
4. 3.17km NW of The Geysers, CAMon, Sep 6, 3:34 PM PDT · 1855 days ago · 2 km deep · 97 km away · felt by 2
5. 2.56km NW of The Geysers, CAMon, Sep 6, 3:34 PM PDT · 1855 days ago · 3 km deep · 97 km away · felt by 1
6. 2.07km NW of The Geysers, CAMon, Sep 6, 7:24 PM PDT · 1855 days ago · 3 km deep · 97 km away
7. 1.66km WNW of The Geysers, CAMon, Sep 6, 8:48 PM PDT · 1854 days ago · 2 km deep · 97 km away
8. 1.59km WNW of Cobb, CATue, Sep 7, 12:34 AM PDT · 1854 days ago · 2 km deep · 94 km away
9. 1.97km NW of Laytonville, CATue, Sep 7, 10:57 AM PDT · 1854 days ago · 8 km deep · 23 km away
10. 1.57km W of Cobb, CAWed, Sep 8, 3:21 AM PDT · 1853 days ago · 2 km deep · 95 km away
11. 1.77km NW of The Geysers, CAWed, Sep 8, 5:04 AM PDT · 1853 days ago · 3 km deep · 96 km away
12. 1.87km ENE of Brooktrails, CAWed, Sep 8, 8:00 AM PDT · 1853 days ago · 6 km deep · 12 km away
13. 2.15km NW of The Geysers, CAWed, Sep 8, 8:08 AM PDT · 1853 days ago · 2 km deep · 98 km away
14. 2.36km W of Cobb, CAThu, Sep 9, 9:42 AM PDT · 1852 days ago · 3 km deep · 97 km away
15. 1.76km WNW of Cobb, CAThu, Sep 9, 9:08 PM PDT · 1851 days ago · 2 km deep · 96 km away
16. 1.63km SSE of Redwood Valley, CAFri, Sep 10, 1:23 AM PDT · 1851 days ago · 6 km deep · 39 km away
17. 2.05km ENE of Talmage, CASat, Sep 11, 2:13 AM PDT · 1850 days ago · 9 km deep · 52 km away
18. 2.422km N of Laytonville, CASat, Sep 11, 7:25 AM PDT · 1850 days ago · 6 km deep · 37 km away · felt by 1
19. 2.38km NW of Laytonville, CASat, Sep 11, 7:45 AM PDT · 1850 days ago · 8 km deep · 24 km away
20. 1.714km W of Redwood Valley, CASat, Sep 11, 11:18 AM PDT · 1850 days ago · 5 km deep · 32 km away
21. 1.58km NNW of Laytonville, CASat, Sep 11, 1:23 PM PDT · 1850 days ago · 10 km deep · 24 km away
22. 2.55km NW of The Geysers, CASat, Sep 11, 4:22 PM PDT · 1850 days ago · 2 km deep · 98 km away
23. 1.710km NNW of Redwood Valley, CAMon, Sep 13, 5:07 AM PDT · 1848 days ago · 8 km deep · 27 km away
24. 1.712km SE of Point Arena, CAThu, Sep 16, 2:13 AM PDT · 1845 days ago · 4 km deep · 80 km away
25. 2.01km WNW of Stony Gorge Reservoir, CAThu, Sep 16, 8:47 AM PDT · 1845 days ago · 13 km deep · 74 km away
26. 2.45km WNW of The Geysers, CAThu, Sep 16, 9:38 AM PDT · 1845 days ago · 4 km deep · 99 km away
27. 1.714km SE of Lake Pillsbury, CAThu, Sep 16, 7:21 PM PDT · 1845 days ago · 1 km deep · 54 km away
28. 1.510km W of Redwood Valley, CAFri, Sep 17, 2:08 AM PDT · 1844 days ago · 5 km deep · 33 km away
29. 1.614km NNE of Brooktrails, CAFri, Sep 17, 9:51 AM PDT · 1844 days ago · 8 km deep · 5 km away
30. 1.913km W of Alder Springs, CAFri, Sep 17, 10:11 PM PDT · 1843 days ago · 0 km deep · 46 km away
31. 1.96km ESE of Lake Pillsbury, CASat, Sep 18, 12:52 AM PDT · 1843 days ago · 5 km deep · 47 km away
32. 1.55km NW of The Geysers, CASat, Sep 18, 1:45 PM PDT · 1843 days ago · 3 km deep · 98 km away
33. 2.09km WNW of The Geysers, CASun, Sep 19, 6:11 PM PDT · 1842 days ago · 2 km deep · 95 km away
34. 1.66km NW of Boonville, CASun, Sep 19, 9:23 PM PDT · 1841 days ago · 0 km deep · 57 km away
35. 1.86km SE of Lake Pillsbury, CATue, Sep 21, 11:25 PM PDT · 1839 days ago · 2 km deep · 48 km away
36. 2.63km NW of The Geysers, CAWed, Sep 22, 11:56 AM PDT · 1839 days ago · 3 km deep · 100 km away · felt by 3
37. 1.76km NW of The Geysers, CAThu, Sep 23, 11:21 AM PDT · 1838 days ago · 3 km deep · 97 km away
38. 1.76km NW of The Geysers, CAThu, Sep 23, 11:26 AM PDT · 1838 days ago · 3 km deep · 97 km away
39. 2.16km SW of Laytonville, CAThu, Sep 23, 1:24 PM PDT · 1838 days ago · 3 km deep · 14 km away
40. 2.012km ESE of Boonville, CASat, Sep 25, 5:02 PM PDT · 1836 days ago · 0 km deep · 69 km away
41. 2.322km N of Lake Pillsbury, CASat, Sep 25, 9:16 PM PDT · 1835 days ago · 13 km deep · 35 km away · felt by 2
42. 1.814km SE of Lake Pillsbury, CAWed, Sep 29, 12:56 AM PDT · 1832 days ago · 7 km deep · 55 km away
43. 1.816km NE of Upper Lake, CAThu, Sep 30, 3:39 AM PDT · 1831 days ago · -1 km deep · 61 km away
44. 1.710km NNW of Redwood Valley, CAThu, Sep 30, 5:06 PM PDT · 1831 days ago · 6 km deep · 27 km away
45. 1.910km NW of The Geysers, CASat, Oct 2, 4:37 AM PDT · 1829 days ago · 2 km deep · 94 km away
46. 2.314km SE of Rockport, CASat, Oct 2, 4:44 AM PDT · 1829 days ago · 0 km deep · 27 km away
47. 1.55km WNW of The Geysers, CASat, Oct 2, 5:55 AM PDT · 1829 days ago · 1 km deep · 98 km away
48. 1.74km W of Cobb, CASat, Oct 2, 7:09 AM PDT · 1829 days ago · 2 km deep · 98 km away
49. 1.73km ENE of Talmage, CASat, Oct 2, 5:38 PM PDT · 1829 days ago · 9 km deep · 51 km away
50. 1.78km W of Cobb, CASat, Oct 2, 8:40 PM PDT · 1828 days ago · 2 km deep · 95 km away
51. 2.15km WNW of Cobb, CASun, Oct 3, 8:38 AM PDT · 1828 days ago · 2 km deep · 97 km away
52. 1.810km WNW of The Geysers, CAMon, Oct 4, 1:43 AM PDT · 1827 days ago · 3 km deep · 94 km away
53. 1.58km NW of The Geysers, CAMon, Oct 4, 8:13 PM PDT · 1826 days ago · 2 km deep · 95 km away
54. 2.28km NW of The Geysers, CAMon, Oct 4, 8:37 PM PDT · 1826 days ago · 2 km deep · 95 km away
55. 1.84km NW of The Geysers, CAMon, Oct 4, 8:58 PM PDT · 1826 days ago · 0 km deep · 99 km away
56. 1.69km W of Cobb, CAWed, Oct 6, 10:13 AM PDT · 1825 days ago · 2 km deep · 94 km away
57. 1.912km SE of Covelo, CAWed, Oct 6, 3:50 PM PDT · 1825 days ago · -1 km deep · 27 km away
58. 2.010km N of Lake Pillsbury, CAWed, Oct 6, 11:55 PM PDT · 1824 days ago · 8 km deep · 39 km away
59. 1.713km SSE of Point Arena, CAThu, Oct 7, 11:42 AM PDT · 1824 days ago · 1 km deep · 85 km away
60. 1.89km WNW of Cobb, CAThu, Oct 7, 4:28 PM PDT · 1824 days ago · 3 km deep · 94 km away

The first 60 of 133.

Before

1. 1.813km WNW of Alder Springs, CAFri, Sep 3, 11:05 AM PDT · 1858 days ago · 3 km deep · 48 km away
2. 1.92km WNW of Cobb, CAFri, Sep 3, 2:25 AM PDT · 1858 days ago · 1 km deep · 98 km away
3. 3.84km ENE of Talmage, CAThu, Sep 2, 10:44 PM PDT · 1858 days ago · 9 km deep · 52 km away · felt by 316
4. 2.811km NE of Covelo, CAThu, Sep 2, 5:02 PM PDT · 1859 days ago · 6 km deep · 40 km away
5. 1.819km NNW of Laytonville, CAThu, Sep 2, 8:17 AM PDT · 1859 days ago · 7 km deep · 35 km away
6. 1.77km W of Cobb, CAWed, Sep 1, 5:13 PM PDT · 1860 days ago · 2 km deep · 95 km away
7. 1.69km WNW of Cobb, CAWed, Sep 1, 3:20 AM PDT · 1860 days ago · 2 km deep · 94 km away
8. 1.610km WNW of The Geysers, CATue, Aug 31, 8:03 PM PDT · 1860 days ago · 2 km deep · 94 km away
9. 1.512km WNW of The Geysers, CATue, Aug 31, 5:28 PM PDT · 1861 days ago · 2 km deep · 92 km away
10. 3.04km ENE of Talmage, CATue, Aug 31, 1:20 PM PDT · 1861 days ago · 9 km deep · 52 km away · felt by 122
11. 2.16km NW of The Geysers, CAMon, Aug 30, 9:27 AM PDT · 1862 days ago · 3 km deep · 97 km away
12. 1.95km NW of The Geysers, CASun, Aug 29, 10:36 PM PDT · 1862 days ago · 2 km deep · 98 km away
13. 1.714km NNE of Brooktrails, CASun, Aug 29, 7:28 PM PDT · 1863 days ago · 9 km deep · 5 km away
14. 1.63km WNW of Cobb, CASun, Aug 29, 3:30 PM PDT · 1863 days ago · 0 km deep · 98 km away
15. 1.93km WNW of Cobb, CASun, Aug 29, 1:47 PM PDT · 1863 days ago · 0 km deep · 98 km away
16. 2.23km WNW of Cobb, CASun, Aug 29, 12:57 PM PDT · 1863 days ago · 0 km deep · 98 km away
17. 2.73km WNW of Cobb, CASun, Aug 29, 12:56 PM PDT · 1863 days ago · 0 km deep · 98 km away · felt by 6
18. 1.69km E of Willits, CASun, Aug 29, 9:09 AM PDT · 1863 days ago · 8 km deep · 21 km away
19. 1.97km NW of The Geysers, CASun, Aug 29, 1:09 AM PDT · 1863 days ago · 2 km deep · 96 km away
20. 2.440km N of Covelo, CASat, Aug 28, 9:46 PM PDT · 1863 days ago · 37 km deep · 68 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc73619756. Read Mon, Oct 5, 2026, 2:15 PM UTC.