M1.8 earthquake 2km SSW of Cobb, CA

Magnitude

1.8 (Md, duration), micro

Magnitude from

Northern California Seismic System

Local time

Thu, Sep 30, 2021, 10:12 PM PDT

UTC

2021-10-01 05:12:44 UTC

Depth

1.4 km (0.9 mi), shallow

Epicenter

38.803° N, 122.735° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.4 km horizontally, 0.6 km in depth

Depth from

From location

Station coverage gap

142°

Stations used

21

• Cobb, CaliforniaPopulation 1,778. Forecast2 kmSSW
• Clearlake, CaliforniaPopulation 15,182. Forecast20 kmSSW
• Santa Rosa, CaliforniaPopulation 178,127. Forecast40 kmN
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast664 kmNW

After

1. 1.51km E of The Geysers, CAThu, Sep 30, 10:13 PM PDT · 1829 days ago · 0 km deep · 3 km away
2. 1.93km SSW of Anderson Springs, CAFri, Oct 1, 6:46 AM PDT · 1829 days ago · 2 km deep · 7 km away
3. 1.51km NNW of The Geysers, CAFri, Oct 1, 12:04 PM PDT · 1829 days ago · 1 km deep · 3 km away
4. 1.611km NE of Napa, CAFri, Oct 1, 12:27 PM PDT · 1829 days ago · 9 km deep · 67 km away
5. 1.62km N of The Geysers, CAFri, Oct 1, 8:07 PM PDT · 1828 days ago · 2 km deep · 2 km away
6. 1.910km NW of The Geysers, CASat, Oct 2, 4:37 AM PDT · 1828 days ago · 2 km deep · 10 km away
7. 1.55km WNW of The Geysers, CASat, Oct 2, 5:55 AM PDT · 1828 days ago · 1 km deep · 6 km away
8. 1.59km NE of Santa Rosa, CASat, Oct 2, 6:08 AM PDT · 1828 days ago · 4 km deep · 35 km away
9. 1.74km W of Cobb, CASat, Oct 2, 7:09 AM PDT · 1828 days ago · 2 km deep · 3 km away
10. 1.73km ENE of Talmage, CASat, Oct 2, 5:38 PM PDT · 1827 days ago · 9 km deep · 52 km away
11. 1.78km W of Cobb, CASat, Oct 2, 8:40 PM PDT · 1827 days ago · 2 km deep · 7 km away
12. 2.15km WNW of Cobb, CASun, Oct 3, 8:38 AM PDT · 1827 days ago · 2 km deep · 5 km away
13. 1.810km WNW of The Geysers, CAMon, Oct 4, 1:43 AM PDT · 1826 days ago · 3 km deep · 11 km away
14. 1.58km NW of The Geysers, CAMon, Oct 4, 8:13 PM PDT · 1825 days ago · 2 km deep · 8 km away
15. 2.28km NW of The Geysers, CAMon, Oct 4, 8:37 PM PDT · 1825 days ago · 2 km deep · 8 km away
16. 1.84km NW of The Geysers, CAMon, Oct 4, 8:58 PM PDT · 1825 days ago · 0 km deep · 4 km away
17. 2.16km SSW of Yountville, CAWed, Oct 6, 9:44 AM PDT · 1824 days ago · 8 km deep · 58 km away · felt by 4
18. 1.69km W of Cobb, CAWed, Oct 6, 10:13 AM PDT · 1824 days ago · 2 km deep · 9 km away
19. 2.010km N of Lake Pillsbury, CAWed, Oct 6, 11:55 PM PDT · 1823 days ago · 8 km deep · 79 km away
20. 1.713km SSE of Point Arena, CAThu, Oct 7, 11:42 AM PDT · 1823 days ago · 1 km deep · 76 km away
21. 1.89km WNW of Cobb, CAThu, Oct 7, 4:28 PM PDT · 1822 days ago · 3 km deep · 9 km away
22. 1.97km W of Cobb, CAThu, Oct 7, 9:13 PM PDT · 1822 days ago · 2 km deep · 7 km away · felt by 1
23. 1.78km NW of The Geysers, CAThu, Oct 7, 11:22 PM PDT · 1822 days ago · 2 km deep · 8 km away
24. 1.69km WNW of The Geysers, CAFri, Oct 8, 7:28 PM PDT · 1821 days ago · 3 km deep · 9 km away
25. 1.66km NE of Willits, CAFri, Oct 8, 11:16 PM PDT · 1821 days ago · 6 km deep · 88 km away
26. 1.91km ESE of The Geysers, CASat, Oct 9, 7:07 AM PDT · 1821 days ago · 0 km deep · 3 km away
27. 2.61km NW of The Geysers, CASat, Oct 9, 3:51 PM PDT · 1820 days ago · 2 km deep · 3 km away · felt by 2
28. 2.61km NW of The Geysers, CASat, Oct 9, 9:38 PM PDT · 1820 days ago · 2 km deep · 3 km away · felt by 7
29. 1.73km N of The Geysers, CASat, Oct 9, 10:08 PM PDT · 1820 days ago · 0 km deep · 2 km away
30. 1.811km N of Lake Pillsbury, CASun, Oct 10, 2:40 PM PDT · 1819 days ago · 4 km deep · 81 km away · felt by 2
31. 2.111km N of Lake Pillsbury, CASun, Oct 10, 7:52 PM PDT · 1819 days ago · 6 km deep · 81 km away
32. 1.98km NW of The Geysers, CAMon, Oct 11, 9:13 AM PDT · 1819 days ago · 2 km deep · 7 km away
33. 2.011km N of Lake Pillsbury, CAMon, Oct 11, 10:38 AM PDT · 1819 days ago · 7 km deep · 81 km away
34. 1.71km ESE of The Geysers, CAMon, Oct 11, 6:19 PM PDT · 1818 days ago · 0 km deep · 3 km away
35. 1.82km NE of The Geysers, CAMon, Oct 11, 9:17 PM PDT · 1818 days ago · 2 km deep · 1 km away
36. 1.62km NE of The Geysers, CAMon, Oct 11, 9:17 PM PDT · 1818 days ago · 1 km deep · 1 km away
37. 1.77km NW of The Geysers, CAMon, Oct 11, 11:31 PM PDT · 1818 days ago · 2 km deep · 7 km away
38. 1.97km NW of The Geysers, CATue, Oct 12, 2:38 AM PDT · 1818 days ago · 3 km deep · 7 km away · felt by 1
39. 2.112km SE of Talmage, CATue, Oct 12, 4:14 AM PDT · 1818 days ago · 4 km deep · 41 km away
40. 2.13km WNW of Crockett, CATue, Oct 12, 10:20 AM PDT · 1818 days ago · 8 km deep · 93 km away · felt by 4
41. 1.910km WNW of The Geysers, CATue, Oct 12, 2:30 PM PDT · 1817 days ago · 3 km deep · 11 km away
42. 1.74km W of Cobb, CATue, Oct 12, 4:07 PM PDT · 1817 days ago · 2 km deep · 3 km away
43. 1.914km ESE of Lake Pillsbury, CATue, Oct 12, 6:07 PM PDT · 1817 days ago · 0 km deep · 61 km away
44. 2.35km NW of The Geysers, CAWed, Oct 13, 2:27 AM PDT · 1817 days ago · 2 km deep · 6 km away
45. 2.412km N of Lake Pillsbury, CAWed, Oct 13, 9:17 AM PDT · 1817 days ago · 8 km deep · 81 km away · felt by 2
46. 2.66km NW of The Geysers, CAWed, Oct 13, 2:41 PM PDT · 1816 days ago · 2 km deep · 7 km away · felt by 2
47. 1.811km ESE of Hidden Valley Lake, CAWed, Oct 13, 10:10 PM PDT · 1816 days ago · 9 km deep · 26 km away
48. 1.59km NE of Cloverdale, CAThu, Oct 14, 5:22 AM PDT · 1816 days ago · 4 km deep · 19 km away · felt by 1
49. 2.010km NNE of Angwin, CAThu, Oct 14, 3:20 PM PDT · 1815 days ago · 7 km deep · 33 km away
50. 1.510km N of Cloverdale, CAThu, Oct 14, 10:23 PM PDT · 1815 days ago · 6 km deep · 26 km away
51. 3.014km N of Cloverdale, CAFri, Oct 15, 12:54 PM PDT · 1815 days ago · 4 km deep · 30 km away · felt by 43
52. 1.62km NE of The Geysers, CASat, Oct 16, 2:27 PM PDT · 1813 days ago · 2 km deep · 2 km away
53. 1.89km WNW of The Geysers, CASun, Oct 17, 1:27 AM PDT · 1813 days ago · 2 km deep · 9 km away
54. 1.79km NW of The Geysers, CASun, Oct 17, 1:27 AM PDT · 1813 days ago · 2 km deep · 10 km away
55. 1.67km WNW of Cobb, CASun, Oct 17, 2:47 AM PDT · 1813 days ago · 2 km deep · 7 km away
56. 2.44km NW of The Geysers, CASun, Oct 17, 7:53 AM PDT · 1813 days ago · 1 km deep · 5 km away
57. 1.815km ESE of Hidden Valley Lake, CASun, Oct 17, 4:24 PM PDT · 1812 days ago · 4 km deep · 29 km away
58. 2.03km WNW of Cobb, CAMon, Oct 18, 12:09 AM PDT · 1812 days ago · 1 km deep · 4 km away
59. 1.52km NNW of The Geysers, CAMon, Oct 18, 11:30 AM PDT · 1812 days ago · 1 km deep · 3 km away
60. 1.78km W of Cobb, CAMon, Oct 18, 2:40 PM PDT · 1811 days ago · 2 km deep · 8 km away

The first 60 of 188.

Before

1. 2.71km NE of The Geysers, CAThu, Sep 30, 10:12 PM PDT · 1829 days ago · 0 km deep · 3 km away · felt by 3
2. 1.710km NNW of Redwood Valley, CAThu, Sep 30, 5:06 PM PDT · 1829 days ago · 6 km deep · 75 km away
3. 3.23km ESE of Santa Rosa, CAThu, Sep 30, 5:45 AM PDT · 1830 days ago · 9 km deep · 41 km away · felt by 1,048
4. 1.816km NE of Upper Lake, CAThu, Sep 30, 3:39 AM PDT · 1830 days ago · -1 km deep · 53 km away
5. 1.814km SE of Lake Pillsbury, CAWed, Sep 29, 12:56 AM PDT · 1831 days ago · 7 km deep · 58 km away
6. 1.91km NW of The Geysers, CATue, Sep 28, 8:53 PM PDT · 1831 days ago · 2 km deep · 3 km away
7. 1.76km SW of Calistoga, CATue, Sep 28, 6:00 PM PDT · 1831 days ago · 8 km deep · 31 km away
8. 1.63km SE of The Geysers, CASun, Sep 26, 5:52 PM PDT · 1833 days ago · 2 km deep · 5 km away
9. 2.322km N of Lake Pillsbury, CASat, Sep 25, 9:16 PM PDT · 1834 days ago · 13 km deep · 92 km away · felt by 2
10. 2.012km ESE of Boonville, CASat, Sep 25, 5:02 PM PDT · 1834 days ago · 0 km deep · 47 km away
11. 1.63km SW of Anderson Springs, CASat, Sep 25, 1:25 PM PDT · 1835 days ago · 2 km deep · 5 km away
12. 2.71km SSE of Vallejo, CAFri, Sep 24, 12:04 AM PDT · 1836 days ago · 11 km deep · 89 km away · felt by 481
13. 1.73km NNW of The Geysers, CAThu, Sep 23, 1:22 PM PDT · 1837 days ago · 1 km deep · 3 km away
14. 1.76km NW of The Geysers, CAThu, Sep 23, 11:26 AM PDT · 1837 days ago · 3 km deep · 7 km away
15. 1.76km NW of The Geysers, CAThu, Sep 23, 11:21 AM PDT · 1837 days ago · 3 km deep · 6 km away
16. 1.73km SW of Anderson Springs, CAThu, Sep 23, 1:23 AM PDT · 1837 days ago · 2 km deep · 6 km away
17. 2.63km NW of The Geysers, CAWed, Sep 22, 11:56 AM PDT · 1838 days ago · 3 km deep · 4 km away · felt by 3
18. 1.86km SE of Lake Pillsbury, CATue, Sep 21, 11:25 PM PDT · 1838 days ago · 2 km deep · 65 km away
19. 1.610km NE of Healdsburg, CATue, Sep 21, 5:38 PM PDT · 1838 days ago · 4 km deep · 16 km away
20. 1.83km SE of Larkfield-Wikiup, CATue, Sep 21, 5:19 PM PDT · 1838 days ago · 5 km deep · 34 km away · felt by 5

From the USGS Earthquake Hazards Program and its partner networks, event nc73631691. Read Sun, Oct 4, 2026, 8:11 AM UTC.