M1.5 earthquake 5km E of Boonville, CA

Magnitude

1.5 (Md, duration), micro

Magnitude from

Northern California Seismic System

Local time

Thu, Jul 22, 2021, 2:48 AM PDT

UTC

2021-07-22 09:48:55 UTC

Depth

5.1 km (3.2 mi), shallow

Epicenter

39.011° N, 123.304° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.2 km horizontally, 0.6 km in depth

Magnitude uncertainty

±0.16

Depth from

From location

Station coverage gap

57°

Stations used

18

• Boonville, CaliforniaPopulation 1,035. Forecast5 kmE
• Ukiah, CaliforniaPopulation 15,917. Forecast18 kmSSW
• Santa Rosa, CaliforniaPopulation 178,127. Forecast81 kmNW
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast713 kmNW

After

1. 1.87km NW of The Geysers, CAThu, Jul 22, 10:48 AM PDT · 1899 days ago · 3 km deep · 47 km away
2. 1.612km N of Brooktrails, CAThu, Jul 22, 1:37 PM PDT · 1899 days ago · 7 km deep · 60 km away
3. 2.311km W of Alder Springs, CAThu, Jul 22, 10:15 PM PDT · 1899 days ago · 6 km deep · 82 km away
4. 1.710km SSE of Laytonville, CAThu, Jul 22, 11:57 PM PDT · 1899 days ago · 9 km deep · 68 km away
5. 2.26km WNW of Cobb, CAFri, Jul 23, 11:44 AM PDT · 1898 days ago · 2 km deep · 49 km away
6. 2.26km WNW of Cobb, CAFri, Jul 23, 11:46 AM PDT · 1898 days ago · 2 km deep · 48 km away
7. 2.011km W of Alder Springs, CAFri, Jul 23, 4:13 PM PDT · 1898 days ago · 4 km deep · 83 km away
8. 2.510km WNW of Alder Springs, CASat, Jul 24, 6:37 AM PDT · 1898 days ago · 1 km deep · 83 km away
9. 2.311km W of Alder Springs, CASat, Jul 24, 7:19 PM PDT · 1897 days ago · 2 km deep · 83 km away
10. 2.811km W of Alder Springs, CASat, Jul 24, 7:35 PM PDT · 1897 days ago · 0 km deep · 83 km away
11. 1.77km NW of The Geysers, CASat, Jul 24, 10:12 PM PDT · 1897 days ago · 2 km deep · 47 km away
12. 3.211km W of Alder Springs, CASun, Jul 25, 6:21 PM PDT · 1896 days ago · 5 km deep · 83 km away · felt by 9
13. 2.412km N of Laytonville, CAMon, Jul 26, 1:22 AM PDT · 1896 days ago · 7 km deep · 89 km away
14. 2.16km SSW of Calistoga, CAMon, Jul 26, 3:35 AM PDT · 1896 days ago · 9 km deep · 82 km away · felt by 4
15. 1.73km NW of The Geysers, CAMon, Jul 26, 1:02 PM PDT · 1895 days ago · 0 km deep · 51 km away
16. 2.511km W of Alder Springs, CAMon, Jul 26, 10:40 PM PDT · 1895 days ago · 1 km deep · 83 km away
17. 2.17km NW of The Geysers, CATue, Jul 27, 7:58 AM PDT · 1895 days ago · -1 km deep · 48 km away
18. 2.011km W of Alder Springs, CATue, Jul 27, 11:10 AM PDT · 1894 days ago · 5 km deep · 83 km away
19. 1.614km NE of Redwood Valley, CATue, Jul 27, 5:40 PM PDT · 1894 days ago · 3 km deep · 43 km away
20. 2.511km WNW of Alder Springs, CATue, Jul 27, 9:34 PM PDT · 1894 days ago · 5 km deep · 83 km away
21. 2.07km ESE of Willits, CATue, Jul 27, 11:34 PM PDT · 1894 days ago · 7 km deep · 43 km away
22. 3.06km NNW of Guerneville, CAWed, Jul 28, 3:51 AM PDT · 1894 days ago · 6 km deep · 57 km away · felt by 201
23. 1.94km NW of The Geysers, CAWed, Jul 28, 9:38 PM PDT · 1893 days ago · -1 km deep · 50 km away
24. 2.23km S of Anderson Springs, CAWed, Jul 28, 11:30 PM PDT · 1893 days ago · 2 km deep · 60 km away
25. 2.13km SSW of Anderson Springs, CAWed, Jul 28, 11:30 PM PDT · 1893 days ago · 4 km deep · 60 km away
26. 2.32km NNW of The Geysers, CAWed, Jul 28, 11:30 PM PDT · 1893 days ago · 0 km deep · 53 km away
27. 1.73km NW of The Geysers, CAWed, Jul 28, 11:31 PM PDT · 1893 days ago · -1 km deep · 51 km away
28. 1.87km WNW of Cobb, CAWed, Jul 28, 11:32 PM PDT · 1893 days ago · 1 km deep · 48 km away
29. 1.76km WNW of Cobb, CAThu, Jul 29, 4:06 AM PDT · 1893 days ago · 2 km deep · 49 km away
30. 1.84km W of Cobb, CAThu, Jul 29, 7:08 AM PDT · 1893 days ago · 2 km deep · 51 km away
31. 1.58km WNW of Cobb, CAThu, Jul 29, 2:45 PM PDT · 1892 days ago · 1 km deep · 47 km away
32. 2.57km NW of The Geysers, CAThu, Jul 29, 8:11 PM PDT · 1892 days ago · 3 km deep · 48 km away · felt by 4
33. 1.97km NW of The Geysers, CAThu, Jul 29, 8:11 PM PDT · 1892 days ago · 3 km deep · 48 km away
34. 1.76km NW of The Geysers, CAThu, Jul 29, 8:12 PM PDT · 1892 days ago · 3 km deep · 48 km away
35. 2.26km NW of The Geysers, CAThu, Jul 29, 10:48 PM PDT · 1892 days ago · 3 km deep · 48 km away
36. 1.97km ESE of Lake Pillsbury, CAThu, Jul 29, 11:47 PM PDT · 1892 days ago · 4 km deep · 55 km away
37. 2.46km NW of The Geysers, CAFri, Jul 30, 12:32 PM PDT · 1891 days ago · 2 km deep · 49 km away
38. 3.25km NNW of The Geysers, CASat, Jul 31, 8:15 AM PDT · 1891 days ago · 3 km deep · 50 km away · felt by 34
39. 2.16km W of Cobb, CASat, Jul 31, 11:03 AM PDT · 1890 days ago · 2 km deep · 49 km away
40. 1.610km ENE of Hidden Valley Lake, CASat, Jul 31, 11:46 AM PDT · 1890 days ago · 9 km deep · 75 km away
41. 2.012km WNW of Alder Springs, CASat, Jul 31, 1:47 PM PDT · 1890 days ago · 3 km deep · 83 km away
42. 2.712km WNW of Alder Springs, CASat, Jul 31, 2:47 PM PDT · 1890 days ago · -1 km deep · 83 km away
43. 3.012km WNW of Alder Springs, CASat, Jul 31, 3:16 PM PDT · 1890 days ago · 0 km deep · 84 km away · felt by 1
44. 1.713km WNW of Alder Springs, CASat, Jul 31, 3:53 PM PDT · 1890 days ago · -1 km deep · 83 km away
45. 1.912km WNW of Alder Springs, CASat, Jul 31, 7:29 PM PDT · 1890 days ago · 1 km deep · 83 km away
46. 2.111km NE of Healdsburg, CASun, Aug 1, 1:22 AM PDT · 1890 days ago · 6 km deep · 60 km away · felt by 2
47. 2.212km WNW of Alder Springs, CASun, Aug 1, 4:54 AM PDT · 1890 days ago · 6 km deep · 84 km away
48. 1.72km W of Anderson Springs, CASun, Aug 1, 6:30 AM PDT · 1890 days ago · 2 km deep · 57 km away · felt by 1
49. 2.43km W of Anderson Springs, CASun, Aug 1, 6:30 AM PDT · 1890 days ago · 1 km deep · 57 km away
50. 1.55km NW of The Geysers, CASun, Aug 1, 10:08 AM PDT · 1889 days ago · 2 km deep · 49 km away
51. 2.210km WNW of Alder Springs, CASun, Aug 1, 12:45 PM PDT · 1889 days ago · 4 km deep · 84 km away
52. 2.012km WNW of Alder Springs, CASun, Aug 1, 1:34 PM PDT · 1889 days ago · 7 km deep · 84 km away
53. 1.66km W of Laytonville, CAMon, Aug 2, 1:30 AM PDT · 1889 days ago · 3 km deep · 79 km away
54. 1.82km ESE of Redwood Valley, CAMon, Aug 2, 2:58 AM PDT · 1889 days ago · 7 km deep · 30 km away
55. 2.15km SSE of Cloverdale, CAMon, Aug 2, 4:25 AM PDT · 1889 days ago · 3 km deep · 38 km away · felt by 10
56. 2.512km W of Alder Springs, CAMon, Aug 2, 7:49 AM PDT · 1889 days ago · 5 km deep · 83 km away · felt by 1
57. 2.113km WNW of Alder Springs, CAMon, Aug 2, 7:50 AM PDT · 1889 days ago · 1 km deep · 83 km away
58. 2.711km W of Alder Springs, CAMon, Aug 2, 8:04 AM PDT · 1889 days ago · 6 km deep · 83 km away · felt by 1
59. 2.112km W of Alder Springs, CAMon, Aug 2, 8:48 AM PDT · 1888 days ago · 4 km deep · 83 km away
60. 2.012km W of Alder Springs, CAMon, Aug 2, 11:20 AM PDT · 1888 days ago · 4 km deep · 82 km away · felt by 1

The first 60 of at least 201.

Before

1. 2.38km NW of The Geysers, CAWed, Jul 21, 2:56 PM PDT · 1900 days ago · 1 km deep · 47 km away · felt by 2
2. 1.89km ESE of Cloverdale, CAWed, Jul 21, 5:44 AM PDT · 1901 days ago · 4 km deep · 42 km away
3. 2.12km SW of Cobb, CAWed, Jul 21, 3:05 AM PDT · 1901 days ago · 2 km deep · 54 km away
4. 1.56km WNW of The Geysers, CAWed, Jul 21, 2:14 AM PDT · 1901 days ago · 1 km deep · 49 km away
5. 2.29km ESE of Cloverdale, CAWed, Jul 21, 12:51 AM PDT · 1901 days ago · 5 km deep · 42 km away · felt by 1
6. 1.97km ESE of Roseland, CATue, Jul 20, 10:36 PM PDT · 1901 days ago · 9 km deep · 89 km away
7. 1.73km SE of The Geysers, CATue, Jul 20, 10:18 PM PDT · 1901 days ago · 1 km deep · 57 km away
8. 1.93km W of Cobb, CATue, Jul 20, 5:54 AM PDT · 1902 days ago · 2 km deep · 52 km away · felt by 1
9. 1.66km W of Cobb, CATue, Jul 20, 1:45 AM PDT · 1902 days ago · 2 km deep · 48 km away
10. 1.68km SW of Calistoga, CAMon, Jul 19, 7:22 AM PDT · 1903 days ago · 6 km deep · 78 km away
11. 1.610km ESE of Angwin, CASun, Jul 18, 9:24 PM PDT · 1903 days ago · 4 km deep · 99 km away
12. 2.36km E of Willits, CASat, Jul 17, 8:34 PM PDT · 1904 days ago · 6 km deep · 45 km away · felt by 1
13. 1.63km NNW of The Geysers, CASat, Jul 17, 4:23 AM PDT · 1905 days ago · 0 km deep · 52 km away
14. 2.23km NNW of The Geysers, CASat, Jul 17, 4:22 AM PDT · 1905 days ago · 0 km deep · 51 km away
15. 2.03km NNW of The Geysers, CASat, Jul 17, 4:22 AM PDT · 1905 days ago · 0 km deep · 51 km away
16. 2.03km NNW of The Geysers, CASat, Jul 17, 4:22 AM PDT · 1905 days ago · 0 km deep · 51 km away
17. 1.93km NNW of The Geysers, CASat, Jul 17, 1:20 AM PDT · 1905 days ago · 0 km deep · 52 km away · felt by 1
18. 1.69km SE of Point Arena, CAFri, Jul 16, 10:38 PM PDT · 1905 days ago · 1 km deep · 34 km away
19. 2.38km WNW of Cobb, CAFri, Jul 16, 8:03 AM PDT · 1906 days ago · 2 km deep · 47 km away
20. 1.62km NNW of The Geysers, CAFri, Jul 16, 7:33 AM PDT · 1906 days ago · 2 km deep · 53 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc73597431. Read Sun, Oct 4, 2026, 2:57 AM UTC.