M2.2 earthquake 8km WNW of Cobb, CA

Magnitude

2.2 (Md, duration), micro

Magnitude from

Northern California Seismic System

Local time

Sun, Aug 22, 2021, 5:40 PM PDT

UTC

2021-08-23 00:40:19 UTC

Depth

2.4 km (1.5 mi), shallow

Epicenter

38.838° N, 122.809° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.1 km horizontally, 0.2 km in depth

Magnitude uncertainty

±0.12

Depth from

From location

Station coverage gap

33°

Stations used

63

• Cobb, CaliforniaPopulation 1,778. Forecast8 kmWNW
• Clearlake, CaliforniaPopulation 15,182. Forecast21 kmSW
• Santa Rosa, CaliforniaPopulation 178,127. Forecast45 kmN
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast671 kmNW

After

1. 2.07km W of Calistoga, CAMon, Aug 23, 10:13 PM PDT · 1867 days ago · 8 km deep · 33 km away · felt by 8
2. 1.813km W of Alder Springs, CATue, Aug 24, 1:26 AM PDT · 1867 days ago · 2 km deep · 92 km away · felt by 1
3. 1.98km WNW of Point Arena, CATue, Aug 24, 12:33 PM PDT · 1867 days ago · 6 km deep · 86 km away
4. 1.77km WSW of St. Helena, CATue, Aug 24, 11:32 PM PDT · 1866 days ago · 8 km deep · 45 km away
5. 1.611km NE of Napa, CAWed, Aug 25, 2:17 AM PDT · 1866 days ago · 10 km deep · 77 km away
6. 2.43km W of Anderson Springs, CAWed, Aug 25, 9:44 PM PDT · 1865 days ago · 2 km deep · 10 km away
7. 2.44km S of Talmage, CAThu, Aug 26, 6:15 AM PDT · 1865 days ago · 8 km deep · 42 km away · felt by 7
8. 2.510km NW of The Geysers, CAThu, Aug 26, 1:33 PM PDT · 1865 days ago · 2 km deep · 2 km away
9. 1.65km W of Cobb, CAFri, Aug 27, 8:12 AM PDT · 1864 days ago · 1 km deep · 3 km away
10. 2.53km ESE of Larkfield-Wikiup, CAFri, Aug 27, 11:11 AM PDT · 1864 days ago · 7 km deep · 38 km away · felt by 122
11. 1.57km WSW of St. Helena, CAFri, Aug 27, 11:27 AM PDT · 1864 days ago · 9 km deep · 46 km away
12. 2.14km S of Larkfield-Wikiup, CAFri, Aug 27, 12:11 PM PDT · 1864 days ago · 7 km deep · 40 km away · felt by 5
13. 1.91km WNW of The Geysers, CAFri, Aug 27, 12:44 PM PDT · 1864 days ago · 1 km deep · 7 km away
14. 1.66km NW of The Geysers, CASat, Aug 28, 9:14 AM PDT · 1863 days ago · 3 km deep · 3 km away
15. 1.59km WNW of Cobb, CASat, Aug 28, 3:57 PM PDT · 1863 days ago · 2 km deep · 1 km away
16. 1.97km NW of The Geysers, CASun, Aug 29, 1:09 AM PDT · 1862 days ago · 2 km deep · 1 km away
17. 1.69km E of Willits, CASun, Aug 29, 9:09 AM PDT · 1862 days ago · 8 km deep · 74 km away
18. 2.73km WNW of Cobb, CASun, Aug 29, 12:56 PM PDT · 1862 days ago · 0 km deep · 5 km away · felt by 6
19. 2.23km WNW of Cobb, CASun, Aug 29, 12:57 PM PDT · 1862 days ago · 0 km deep · 4 km away
20. 1.93km WNW of Cobb, CASun, Aug 29, 1:47 PM PDT · 1862 days ago · 0 km deep · 5 km away
21. 1.63km WNW of Cobb, CASun, Aug 29, 3:30 PM PDT · 1862 days ago · 0 km deep · 4 km away
22. 1.714km NNE of Brooktrails, CASun, Aug 29, 7:28 PM PDT · 1861 days ago · 9 km deep · 93 km away
23. 1.91km NNE of The Geysers, CASun, Aug 29, 8:32 PM PDT · 1861 days ago · 2 km deep · 8 km away
24. 1.95km NW of The Geysers, CASun, Aug 29, 10:36 PM PDT · 1861 days ago · 2 km deep · 3 km away
25. 2.16km NW of The Geysers, CAMon, Aug 30, 9:27 AM PDT · 1861 days ago · 3 km deep · 2 km away
26. 2.514km W of Williams, CAMon, Aug 30, 2:38 PM PDT · 1861 days ago · 21 km deep · 57 km away
27. 1.73km ENE of The Geysers, CAMon, Aug 30, 2:45 PM PDT · 1861 days ago · 2 km deep · 9 km away
28. 1.810km NNE of Windsor, CATue, Aug 31, 12:22 AM PDT · 1860 days ago · 7 km deep · 25 km away
29. 3.04km ENE of Talmage, CATue, Aug 31, 1:20 PM PDT · 1860 days ago · 9 km deep · 43 km away · felt by 122
30. 1.88km NNE of Black Point-Green Point, CATue, Aug 31, 2:32 PM PDT · 1860 days ago · 8 km deep · 79 km away
31. 1.512km WNW of The Geysers, CATue, Aug 31, 5:28 PM PDT · 1860 days ago · 2 km deep · 6 km away
32. 1.610km WNW of The Geysers, CATue, Aug 31, 8:03 PM PDT · 1859 days ago · 2 km deep · 4 km away
33. 1.69km WNW of Cobb, CAWed, Sep 1, 3:20 AM PDT · 1859 days ago · 2 km deep · 1 km away
34. 1.73km SW of Angwin, CAWed, Sep 1, 1:01 PM PDT · 1859 days ago · 4 km deep · 42 km away
35. 1.77km W of Cobb, CAWed, Sep 1, 5:13 PM PDT · 1859 days ago · 2 km deep · 0 km away
36. 3.84km ENE of Talmage, CAThu, Sep 2, 10:44 PM PDT · 1857 days ago · 9 km deep · 43 km away · felt by 316
37. 1.92km WNW of Cobb, CAFri, Sep 3, 2:25 AM PDT · 1857 days ago · 1 km deep · 5 km away
38. 1.72km SW of Cobb, CAFri, Sep 3, 8:07 AM PDT · 1857 days ago · 2 km deep · 7 km away
39. 1.813km WNW of Alder Springs, CAFri, Sep 3, 11:05 AM PDT · 1857 days ago · 3 km deep · 94 km away
40. 1.513km N of Brooktrails, CAFri, Sep 3, 5:53 PM PDT · 1857 days ago · 8 km deep · 95 km away
41. 1.74km ENE of Talmage, CASat, Sep 4, 12:21 AM PDT · 1856 days ago · 6 km deep · 44 km away
42. 3.74km ENE of Talmage, CASat, Sep 4, 10:27 PM PDT · 1855 days ago · 10 km deep · 43 km away · felt by 199
43. 2.21km NW of The Geysers, CASun, Sep 5, 2:06 PM PDT · 1855 days ago · 2 km deep · 7 km away
44. 1.62km NW of The Geysers, CASun, Sep 5, 2:34 PM PDT · 1855 days ago · 2 km deep · 7 km away
45. 1.57km S of Calistoga, CAMon, Sep 6, 3:48 AM PDT · 1854 days ago · 8 km deep · 40 km away
46. 2.31km NNW of The Geysers, CAMon, Sep 6, 10:06 AM PDT · 1854 days ago · 1 km deep · 7 km away
47. 3.17km NW of The Geysers, CAMon, Sep 6, 3:34 PM PDT · 1854 days ago · 2 km deep · 3 km away · felt by 2
48. 2.56km NW of The Geysers, CAMon, Sep 6, 3:34 PM PDT · 1854 days ago · 3 km deep · 3 km away · felt by 1
49. 2.07km NW of The Geysers, CAMon, Sep 6, 7:24 PM PDT · 1853 days ago · 3 km deep · 3 km away
50. 1.66km WNW of The Geysers, CAMon, Sep 6, 8:48 PM PDT · 1853 days ago · 2 km deep · 4 km away
51. 1.59km WNW of Cobb, CATue, Sep 7, 12:34 AM PDT · 1853 days ago · 2 km deep · 1 km away
52. 1.83km SW of Anderson Springs, CATue, Sep 7, 2:40 PM PDT · 1853 days ago · 2 km deep · 12 km away · felt by 1
53. 1.57km W of Cobb, CAWed, Sep 8, 3:21 AM PDT · 1852 days ago · 2 km deep · 0 km away
54. 1.77km NW of The Geysers, CAWed, Sep 8, 5:04 AM PDT · 1852 days ago · 3 km deep · 2 km away
55. 1.87km ENE of Brooktrails, CAWed, Sep 8, 8:00 AM PDT · 1852 days ago · 6 km deep · 83 km away
56. 2.15km NW of The Geysers, CAWed, Sep 8, 8:08 AM PDT · 1852 days ago · 2 km deep · 3 km away
57. 2.36km W of Cobb, CAThu, Sep 9, 9:42 AM PDT · 1851 days ago · 3 km deep · 2 km away
58. 1.76km WNW of Cobb, CAThu, Sep 9, 9:08 PM PDT · 1850 days ago · 2 km deep · 2 km away
59. 1.63km SSE of Redwood Valley, CAFri, Sep 10, 1:23 AM PDT · 1850 days ago · 6 km deep · 56 km away
60. 2.05km ENE of Talmage, CASat, Sep 11, 2:13 AM PDT · 1849 days ago · 9 km deep · 44 km away

The first 60 of 172.

Before

1. 1.86km WNW of The Geysers, CAFri, Aug 20, 12:51 PM PDT · 1871 days ago · 3 km deep · 4 km away
2. 1.511km SW of The Geysers, CAFri, Aug 20, 11:39 AM PDT · 1871 days ago · 6 km deep · 14 km away
3. 2.112km WNW of Alder Springs, CAFri, Aug 20, 5:58 AM PDT · 1871 days ago · 3 km deep · 93 km away
4. 1.911km SW of The Geysers, CAFri, Aug 20, 3:17 AM PDT · 1871 days ago · 6 km deep · 14 km away
5. 2.41km ESE of The Geysers, CAFri, Aug 20, 2:53 AM PDT · 1871 days ago · 2 km deep · 9 km away
6. 1.74km SSE of The Geysers, CAThu, Aug 19, 2:52 PM PDT · 1872 days ago · 1 km deep · 12 km away · felt by 1
7. 2.12km SSW of Bodega Bay, CAThu, Aug 19, 3:12 AM PDT · 1872 days ago · 10 km deep · 62 km away
8. 1.82km SSW of Bodega Bay, CAThu, Aug 19, 2:43 AM PDT · 1872 days ago · 10 km deep · 62 km away
9. 1.82km SSW of Bodega Bay, CAThu, Aug 19, 1:17 AM PDT · 1872 days ago · 11 km deep · 62 km away
10. 1.62km NNE of The Geysers, CAWed, Aug 18, 10:07 AM PDT · 1873 days ago · 1 km deep · 7 km away
11. 1.88km NNW of Redwood Valley, CATue, Aug 17, 11:12 AM PDT · 1874 days ago · 1 km deep · 67 km away
12. 1.75km NW of The Geysers, CAMon, Aug 16, 11:27 PM PDT · 1874 days ago · 3 km deep · 3 km away
13. 2.512km ESE of Angwin, CAMon, Aug 16, 12:59 PM PDT · 1875 days ago · 0 km deep · 54 km away · felt by 5
14. 1.513km E of Angwin, CAMon, Aug 16, 12:59 PM PDT · 1875 days ago · 3 km deep · 54 km away
15. 1.610km N of Lake Pillsbury, CASun, Aug 15, 10:44 PM PDT · 1875 days ago · 7 km deep · 74 km away · felt by 1
16. 2.910km N of Lake Pillsbury, CASun, Aug 15, 9:54 PM PDT · 1875 days ago · 10 km deep · 74 km away · felt by 1
17. 2.413km NE of Yountville, CASun, Aug 15, 6:06 PM PDT · 1876 days ago · 5 km deep · 61 km away · felt by 1
18. 1.78km NW of The Geysers, CASun, Aug 15, 11:36 AM PDT · 1876 days ago · 2 km deep · 1 km away
19. 2.46km N of Cobb, CASun, Aug 15, 8:33 AM PDT · 1876 days ago · 3 km deep · 9 km away · felt by 10
20. 2.111km W of Alder Springs, CASat, Aug 14, 4:47 PM PDT · 1877 days ago · 3 km deep · 92 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc73613946. Read Sun, Oct 4, 2026, 12:41 PM UTC.