M1.8 earthquake 6km W of Allendale, CA

Magnitude

1.8 (Md, duration), micro

Magnitude from

Northern California Seismic System

Local time

Tue, Sep 14, 2021, 10:42 PM PDT

UTC

2021-09-15 05:42:47 UTC

Depth

20.9 km (13.0 mi), shallow

Epicenter

38.449° N, 122.010° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.4 km horizontally, 0.5 km in depth

Magnitude uncertainty

±0.11

Depth from

From location

Station coverage gap

69°

Stations used

18

• Allendale, CaliforniaPopulation 1,506. Forecast6 kmW
• Vacaville, CaliforniaPopulation 96,803. Forecast10 kmN
• Fairfield, CaliforniaPopulation 112,970. Forecast22 kmN
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast594 kmNNW

After

1. 1.83km ENE of The Geysers, CAThu, Sep 16, 3:59 AM PDT · 1844 days ago · 1 km deep · 73 km away
2. 2.45km WNW of The Geysers, CAThu, Sep 16, 9:38 AM PDT · 1844 days ago · 4 km deep · 80 km away
3. 1.62km NW of Anderson Springs, CAFri, Sep 17, 1:03 PM PDT · 1842 days ago · 2 km deep · 71 km away
4. 1.55km NW of The Geysers, CASat, Sep 18, 1:45 PM PDT · 1841 days ago · 3 km deep · 79 km away
5. 3.16km WNW of Dublin, CASat, Sep 18, 5:09 PM PDT · 1841 days ago · 7 km deep · 80 km away · felt by 379
6. 1.56km WNW of Dublin, CASat, Sep 18, 5:10 PM PDT · 1841 days ago · 6 km deep · 80 km away
7. 1.65km NW of Dublin, CASun, Sep 19, 12:50 PM PDT · 1840 days ago · 6 km deep · 80 km away
8. 2.09km WNW of The Geysers, CASun, Sep 19, 6:11 PM PDT · 1840 days ago · 2 km deep · 83 km away
9. 1.50km WNW of The Geysers, CASun, Sep 19, 6:31 PM PDT · 1840 days ago · 1 km deep · 75 km away
10. 1.53km NNW of Union City, CATue, Sep 21, 6:01 AM PDT · 1839 days ago · 3 km deep · 92 km away
11. 1.83km SE of Larkfield-Wikiup, CATue, Sep 21, 5:19 PM PDT · 1838 days ago · 5 km deep · 62 km away · felt by 5
12. 1.610km NE of Healdsburg, CATue, Sep 21, 5:38 PM PDT · 1838 days ago · 4 km deep · 70 km away
13. 1.75km NW of Dublin, CATue, Sep 21, 11:39 PM PDT · 1838 days ago · 5 km deep · 80 km away
14. 2.63km NW of The Geysers, CAWed, Sep 22, 11:56 AM PDT · 1837 days ago · 3 km deep · 78 km away · felt by 3
15. 1.73km SW of Anderson Springs, CAThu, Sep 23, 1:23 AM PDT · 1837 days ago · 2 km deep · 70 km away
16. 1.76km NW of The Geysers, CAThu, Sep 23, 11:21 AM PDT · 1836 days ago · 3 km deep · 80 km away
17. 1.76km NW of The Geysers, CAThu, Sep 23, 11:26 AM PDT · 1836 days ago · 3 km deep · 81 km away
18. 1.73km NNW of The Geysers, CAThu, Sep 23, 1:22 PM PDT · 1836 days ago · 1 km deep · 77 km away
19. 1.85km WNW of Dublin, CAThu, Sep 23, 5:18 PM PDT · 1836 days ago · 7 km deep · 81 km away · felt by 1
20. 1.81km WNW of Walnut Creek, CAThu, Sep 23, 6:44 PM PDT · 1836 days ago · 11 km deep · 60 km away · felt by 2
21. 2.71km SSE of Vallejo, CAFri, Sep 24, 12:04 AM PDT · 1836 days ago · 11 km deep · 43 km away · felt by 481
22. 2.12km E of Hayward, CASat, Sep 25, 9:39 AM PDT · 1835 days ago · 3 km deep · 90 km away · felt by 22
23. 1.63km SW of Anderson Springs, CASat, Sep 25, 1:25 PM PDT · 1834 days ago · 2 km deep · 71 km away
24. 1.63km SE of The Geysers, CASun, Sep 26, 5:52 PM PDT · 1833 days ago · 2 km deep · 71 km away
25. 1.76km SW of Calistoga, CATue, Sep 28, 6:00 PM PDT · 1831 days ago · 8 km deep · 54 km away
26. 1.91km NW of The Geysers, CATue, Sep 28, 8:53 PM PDT · 1831 days ago · 2 km deep · 76 km away
27. 3.23km ESE of Santa Rosa, CAThu, Sep 30, 5:45 AM PDT · 1830 days ago · 9 km deep · 58 km away · felt by 1,048
28. 2.71km NE of The Geysers, CAThu, Sep 30, 10:12 PM PDT · 1829 days ago · 0 km deep · 74 km away · felt by 3
29. 1.82km SSW of Cobb, CAThu, Sep 30, 10:12 PM PDT · 1829 days ago · 1 km deep · 74 km away
30. 1.51km E of The Geysers, CAThu, Sep 30, 10:13 PM PDT · 1829 days ago · 0 km deep · 74 km away
31. 1.93km SSW of Anderson Springs, CAFri, Oct 1, 6:46 AM PDT · 1829 days ago · 2 km deep · 69 km away
32. 1.51km NNW of The Geysers, CAFri, Oct 1, 12:04 PM PDT · 1828 days ago · 1 km deep · 75 km away
33. 1.611km NE of Napa, CAFri, Oct 1, 12:27 PM PDT · 1828 days ago · 9 km deep · 19 km away
34. 3.03km N of San Leandro, CAFri, Oct 1, 7:15 PM PDT · 1828 days ago · 7 km deep · 79 km away · felt by 860
35. 1.62km N of The Geysers, CAFri, Oct 1, 8:07 PM PDT · 1828 days ago · 2 km deep · 75 km away
36. 1.910km NW of The Geysers, CASat, Oct 2, 4:37 AM PDT · 1828 days ago · 2 km deep · 84 km away
37. 1.55km WNW of The Geysers, CASat, Oct 2, 5:55 AM PDT · 1828 days ago · 1 km deep · 80 km away
38. 1.59km NE of Santa Rosa, CASat, Oct 2, 6:08 AM PDT · 1828 days ago · 4 km deep · 54 km away
39. 1.74km W of Cobb, CASat, Oct 2, 7:09 AM PDT · 1828 days ago · 2 km deep · 78 km away
40. 3.43km N of San Leandro, CASat, Oct 2, 12:22 PM PDT · 1827 days ago · 6 km deep · 79 km away · felt by 1,793
41. 1.53km N of San Leandro, CASat, Oct 2, 1:34 PM PDT · 1827 days ago · 6 km deep · 79 km away · felt by 14
42. 1.78km W of Cobb, CASat, Oct 2, 8:40 PM PDT · 1827 days ago · 2 km deep · 82 km away
43. 2.15km WNW of Cobb, CASun, Oct 3, 8:38 AM PDT · 1827 days ago · 2 km deep · 79 km away
44. 1.85km SW of San Francisco Zoo, CASun, Oct 3, 1:51 PM PDT · 1826 days ago · 7 km deep · 95 km away
45. 1.810km WNW of The Geysers, CAMon, Oct 4, 1:43 AM PDT · 1826 days ago · 3 km deep · 85 km away
46. 2.70km N of Byron, CAMon, Oct 4, 9:36 AM PDT · 1826 days ago · 4 km deep · 72 km away · felt by 48
47. 1.58km NW of The Geysers, CAMon, Oct 4, 8:13 PM PDT · 1825 days ago · 2 km deep · 82 km away
48. 2.28km NW of The Geysers, CAMon, Oct 4, 8:37 PM PDT · 1825 days ago · 2 km deep · 82 km away
49. 1.84km NW of The Geysers, CAMon, Oct 4, 8:58 PM PDT · 1825 days ago · 0 km deep · 78 km away
50. 1.61km S of Blackhawk, CATue, Oct 5, 9:56 AM PDT · 1825 days ago · 9 km deep · 72 km away
51. 1.82km SE of Pacheco, CATue, Oct 5, 5:53 PM PDT · 1824 days ago · 15 km deep · 53 km away
52. 1.95km SW of Pacheco, CAWed, Oct 6, 7:33 AM PDT · 1824 days ago · 10 km deep · 56 km away · felt by 1
53. 2.16km SSW of Yountville, CAWed, Oct 6, 9:44 AM PDT · 1824 days ago · 8 km deep · 35 km away · felt by 4
54. 1.69km W of Cobb, CAWed, Oct 6, 10:13 AM PDT · 1824 days ago · 2 km deep · 83 km away
55. 2.16km SSW of Moraga, CAThu, Oct 7, 1:21 AM PDT · 1823 days ago · 10 km deep · 75 km away · felt by 6
56. 1.89km WNW of Cobb, CAThu, Oct 7, 4:28 PM PDT · 1822 days ago · 3 km deep · 83 km away
57. 2.14km WSW of Alamo, CAThu, Oct 7, 5:32 PM PDT · 1822 days ago · 15 km deep · 69 km away · felt by 3
58. 1.97km W of Cobb, CAThu, Oct 7, 9:13 PM PDT · 1822 days ago · 2 km deep · 81 km away · felt by 1
59. 1.64km SSW of San Francisco Zoo, CAThu, Oct 7, 10:36 PM PDT · 1822 days ago · 7 km deep · 95 km away · felt by 1
60. 1.78km NW of The Geysers, CAThu, Oct 7, 11:22 PM PDT · 1822 days ago · 2 km deep · 82 km away

The first 60 of 171.

Before

1. 1.610km WNW of Calistoga, CATue, Sep 14, 2:04 PM PDT · 1845 days ago · 4 km deep · 62 km away · felt by 1
2. 1.81km NW of Diablo, CASun, Sep 12, 5:31 AM PDT · 1848 days ago · 8 km deep · 67 km away
3. 2.55km NW of The Geysers, CASat, Sep 11, 4:22 PM PDT · 1848 days ago · 2 km deep · 79 km away
4. 1.73km ESE of Pacheco, CAFri, Sep 10, 5:03 PM PDT · 1849 days ago · 12 km deep · 53 km away
5. 1.76km WNW of Cobb, CAThu, Sep 9, 9:08 PM PDT · 1850 days ago · 2 km deep · 80 km away
6. 1.76km WNW of Dublin, CAThu, Sep 9, 6:56 PM PDT · 1850 days ago · 7 km deep · 80 km away · felt by 3
7. 2.36km W of Cobb, CAThu, Sep 9, 9:42 AM PDT · 1851 days ago · 3 km deep · 80 km away
8. 2.15km NW of The Geysers, CAWed, Sep 8, 8:08 AM PDT · 1852 days ago · 2 km deep · 79 km away
9. 1.77km NW of The Geysers, CAWed, Sep 8, 5:04 AM PDT · 1852 days ago · 3 km deep · 81 km away
10. 1.57km W of Cobb, CAWed, Sep 8, 3:21 AM PDT · 1852 days ago · 2 km deep · 82 km away
11. 1.83km SW of Anderson Springs, CATue, Sep 7, 2:40 PM PDT · 1852 days ago · 2 km deep · 70 km away · felt by 1
12. 1.59km WNW of Cobb, CATue, Sep 7, 12:34 AM PDT · 1853 days ago · 2 km deep · 83 km away
13. 1.66km WNW of The Geysers, CAMon, Sep 6, 8:48 PM PDT · 1853 days ago · 2 km deep · 81 km away
14. 2.07km NW of The Geysers, CAMon, Sep 6, 7:24 PM PDT · 1853 days ago · 3 km deep · 81 km away
15. 2.56km NW of The Geysers, CAMon, Sep 6, 3:34 PM PDT · 1853 days ago · 3 km deep · 81 km away · felt by 1
16. 3.17km NW of The Geysers, CAMon, Sep 6, 3:34 PM PDT · 1853 days ago · 2 km deep · 81 km away · felt by 2
17. 2.31km NNW of The Geysers, CAMon, Sep 6, 10:06 AM PDT · 1854 days ago · 1 km deep · 75 km away
18. 1.57km S of Calistoga, CAMon, Sep 6, 3:48 AM PDT · 1854 days ago · 8 km deep · 51 km away
19. 1.62km NW of The Geysers, CASun, Sep 5, 2:34 PM PDT · 1854 days ago · 2 km deep · 76 km away
20. 2.21km NW of The Geysers, CASun, Sep 5, 2:06 PM PDT · 1854 days ago · 2 km deep · 76 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc73625031. Read Sun, Oct 4, 2026, 4:55 AM UTC.