M2.0 earthquake 36km WNW of Petrolia, CA

Magnitude

2.0 (Md, duration), micro

Magnitude from

Northern California Seismic System

Local time

Sun, Aug 15, 2021, 1:14 AM PDT

UTC

2021-08-15 08:14:34 UTC

Depth

8.4 km (5.2 mi), shallow

Epicenter

40.402° N, 124.693° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 1.1 km horizontally, 1.2 km in depth

Magnitude uncertainty

±0.11

Depth from

From location

Station coverage gap

285°, poorly surrounded by stations

Stations used

21

• Ferndale, CaliforniaPopulation 1,369. Forecast41 kmWSW
• Fortuna, CaliforniaPopulation 12,000. Forecast50 kmWSW
• Chico, CaliforniaPopulation 121,345. Forecast254 kmWNW

After

1. 1.816km W of Petrolia, CAMon, Aug 16, 5:20 AM PDT · 1875 days ago · 11 km deep · 22 km away
2. 2.113km ESE of Redway, CAWed, Aug 18, 6:04 AM PDT · 1873 days ago · 22 km deep · 93 km away
3. 2.58km W of Petrolia, CAThu, Aug 19, 4:33 PM PDT · 1871 days ago · 28 km deep · 28 km away
4. 3.16km W of Petrolia, CAFri, Aug 20, 11:01 AM PDT · 1871 days ago · 28 km deep · 30 km away · felt by 1
5. 2.955km WNW of Petrolia, CAFri, Aug 20, 11:45 AM PDT · 1870 days ago · 15 km deep · 19 km away
6. 1.620km W of Petrolia, CASat, Aug 21, 8:50 PM PDT · 1869 days ago · 15 km deep · 16 km away
7. 1.87km W of Petrolia, CASun, Aug 22, 9:20 AM PDT · 1869 days ago · 29 km deep · 29 km away
8. 2.44km W of Petrolia, CAWed, Aug 25, 1:42 AM PDT · 1866 days ago · 27 km deep · 32 km away
9. 1.712km SSW of Ferndale, CAThu, Aug 26, 11:32 AM PDT · 1864 days ago · 18 km deep · 33 km away
10. 1.712km SSW of Ferndale, CAThu, Aug 26, 12:23 PM PDT · 1864 days ago · 18 km deep · 33 km away
11. 2.432km W of Hayfork, CASat, Aug 28, 8:17 PM PDT · 1862 days ago · 24 km deep · 99 km away
12. 2.422km NW of Petrolia, CAMon, Aug 30, 12:17 AM PDT · 1861 days ago · 19 km deep · 19 km away
13. 4.011km WSW of Petrolia, CATue, Aug 31, 1:01 AM PDT · 1860 days ago · 32 km deep · 28 km away · felt by 8
14. 3.511km WSW of Petrolia, CATue, Aug 31, 1:01 AM PDT · 1860 days ago · 28 km deep · 29 km away
15. 2.48km W of Petrolia, CAThu, Sep 2, 4:59 PM PDT · 1857 days ago · 17 km deep · 28 km away
16. 2.650km W of Petrolia, CAFri, Sep 3, 3:25 AM PDT · 1857 days ago · 11 km deep · 15 km away
17. 2.37km W of Petrolia, CAFri, Sep 3, 3:18 PM PDT · 1856 days ago · 28 km deep · 29 km away
18. 1.86km W of Petrolia, CASat, Sep 4, 7:15 AM PDT · 1856 days ago · 28 km deep · 30 km away
19. 1.96km WSW of Petrolia, CASat, Sep 4, 8:10 AM PDT · 1856 days ago · 28 km deep · 30 km away
20. 2.58km WSW of Petrolia, CASun, Sep 5, 4:22 PM PDT · 1854 days ago · 29 km deep · 31 km away
21. 2.536km W of Petrolia, CATue, Sep 7, 7:35 AM PDT · 1853 days ago · 18 km deep · 5 km away
22. 3.3108km W of Petrolia, CATue, Sep 7, 10:39 AM PDT · 1853 days ago · 10 km deep · 74 km away · felt by 4
23. 1.59km WSW of Petrolia, CAThu, Sep 9, 10:39 AM PDT · 1851 days ago · 21 km deep · 30 km away
24. 4.510km SW of Petrolia, CAThu, Sep 9, 2:57 PM PDT · 1850 days ago · 33 km deep · 30 km away · felt by 39
25. 2.28km WSW of Petrolia, CAThu, Sep 9, 5:03 PM PDT · 1850 days ago · 31 km deep · 30 km away
26. 1.612km ENE of Hydesville, CAFri, Sep 10, 4:08 AM PDT · 1850 days ago · 25 km deep · 64 km away
27. 2.48km WSW of Petrolia, CAFri, Sep 10, 10:06 AM PDT · 1850 days ago · 29 km deep · 29 km away
28. 2.433km WNW of Petrolia, CAFri, Sep 10, 8:00 PM PDT · 1849 days ago · 22 km deep · 3 km away
29. 2.58km SW of Petrolia, CASun, Sep 12, 6:54 AM PDT · 1848 days ago · 31 km deep · 31 km away
30. 2.325km WSW of Petrolia, CASun, Sep 12, 7:20 PM PDT · 1847 days ago · 21 km deep · 20 km away · felt by 1
31. 1.612km SE of Petrolia, CATue, Sep 14, 12:13 AM PDT · 1846 days ago · 11 km deep · 46 km away
32. 2.68km WSW of Petrolia, CAThu, Sep 16, 1:37 AM PDT · 1844 days ago · 30 km deep · 30 km away · felt by 1
33. 3.06km SSW of Petrolia, CAFri, Sep 17, 9:39 PM PDT · 1842 days ago · 20 km deep · 34 km away · felt by 7
34. 2.558km W of Petrolia, CATue, Sep 21, 10:19 AM PDT · 1839 days ago · 6 km deep · 23 km away
35. 2.359km W of Petrolia, CATue, Sep 21, 10:20 AM PDT · 1839 days ago · 11 km deep · 26 km away
36. 2.08km WSW of Petrolia, CATue, Sep 21, 5:02 PM PDT · 1838 days ago · 29 km deep · 29 km away
37. 2.510km W of Petrolia, CATue, Sep 21, 5:08 PM PDT · 1838 days ago · 28 km deep · 27 km away
38. 2.517km WSW of Petrolia, CAThu, Sep 23, 12:46 AM PDT · 1837 days ago · 21 km deep · 22 km away
39. 2.57km WSW of Petrolia, CAFri, Sep 24, 10:31 AM PDT · 1836 days ago · 21 km deep · 31 km away
40. 2.873km W of Ferndale, CASat, Sep 25, 1:18 PM PDT · 1834 days ago · 7 km deep · 45 km away · felt by 3
41. 2.021km WSW of Petrolia, CASat, Sep 25, 7:06 PM PDT · 1834 days ago · 20 km deep · 19 km away
42. 3.613km SE of Petrolia, CASun, Sep 26, 1:51 AM PDT · 1834 days ago · 12 km deep · 48 km away · felt by 12
43. 1.917km W of Humboldt Hill, CASun, Sep 26, 8:38 AM PDT · 1834 days ago · 21 km deep · 42 km away
44. 2.658km W of Petrolia, CASun, Sep 26, 12:54 PM PDT · 1833 days ago · 19 km deep · 25 km away
45. 2.713km SE of Petrolia, CAMon, Sep 27, 3:27 PM PDT · 1832 days ago · 12 km deep · 48 km away
46. 1.926km ESE of Rio Dell, CAWed, Sep 29, 8:49 AM PDT · 1831 days ago · 20 km deep · 74 km away
47. 2.87km WSW of Petrolia, CAWed, Sep 29, 11:37 PM PDT · 1830 days ago · 30 km deep · 30 km away · felt by 1
48. 2.59km SW of Petrolia, CASat, Oct 2, 1:10 AM PDT · 1828 days ago · 33 km deep · 30 km away
49. 3.264km WNW of Petrolia, CATue, Oct 5, 8:54 AM PDT · 1825 days ago · 11 km deep · 29 km away · felt by 1
50. 2.414km SW of Ferndale, CATue, Oct 5, 11:21 AM PDT · 1824 days ago · 23 km deep · 27 km away
51. 2.018km E of Rio Dell, CAWed, Oct 6, 7:40 PM PDT · 1823 days ago · 20 km deep · 68 km away
52. 1.818km E of Rio Dell, CAThu, Oct 7, 8:37 AM PDT · 1823 days ago · 20 km deep · 67 km away
53. 2.856km W of Ferndale, CAThu, Oct 7, 6:08 PM PDT · 1822 days ago · 24 km deep · 29 km away
54. 2.757km W of Ferndale, CAFri, Oct 8, 5:06 AM PDT · 1822 days ago · 9 km deep · 29 km away
55. 1.612km SE of Petrolia, CAFri, Oct 8, 1:05 PM PDT · 1821 days ago · 11 km deep · 46 km away
56. 2.17km SSE of Pine Hills, CAFri, Oct 8, 2:39 PM PDT · 1821 days ago · 25 km deep · 57 km away
57. 2.856km W of Ferndale, CAFri, Oct 8, 8:49 PM PDT · 1821 days ago · 20 km deep · 29 km away
58. 3.818km WSW of Petrolia, CATue, Oct 12, 4:29 AM PDT · 1818 days ago · 21 km deep · 21 km away · felt by 11

Before

1. 2.28km WSW of Petrolia, CAFri, Aug 13, 3:40 PM PDT · 1877 days ago · 29 km deep · 29 km away
2. 1.910km NW of Petrolia, CAFri, Aug 13, 12:40 PM PDT · 1877 days ago · 23 km deep · 28 km away
3. 2.66km WSW of Petrolia, CAThu, Aug 12, 9:11 PM PDT · 1878 days ago · 30 km deep · 30 km away · felt by 1
4. 2.910km WSW of Petrolia, CAThu, Aug 12, 1:03 AM PDT · 1879 days ago · 31 km deep · 29 km away · felt by 1
5. 1.811km WSW of Petrolia, CAWed, Aug 11, 2:01 PM PDT · 1879 days ago · 29 km deep · 29 km away
6. 2.988km W of Petrolia, CAWed, Aug 11, 8:00 AM PDT · 1880 days ago · 22 km deep · 53 km away
7. 2.98km W of Petrolia, CAMon, Aug 9, 7:03 PM PDT · 1881 days ago · 30 km deep · 28 km away
8. 2.08km W of Petrolia, CAMon, Aug 9, 5:31 AM PDT · 1882 days ago · 28 km deep · 28 km away
9. 3.16km W of Petrolia, CASun, Aug 8, 3:40 AM PDT · 1883 days ago · 28 km deep · 30 km away · felt by 5
10. 1.714km SE of Petrolia, CASun, Aug 8, 1:57 AM PDT · 1883 days ago · 12 km deep · 48 km away
11. 2.06km WSW of Petrolia, CASat, Aug 7, 4:43 PM PDT · 1883 days ago · 31 km deep · 31 km away
12. 1.79km W of Petrolia, CASat, Aug 7, 9:49 AM PDT · 1884 days ago · 10 km deep · 27 km away
13. 2.35km W of Petrolia, CASat, Aug 7, 7:06 AM PDT · 1884 days ago · 27 km deep · 31 km away
14. 2.760km W of Ferndale, CASat, Aug 7, 5:57 AM PDT · 1884 days ago · 8 km deep · 36 km away
15. 2.66km ENE of Petrolia, CAFri, Aug 6, 2:56 AM PDT · 1885 days ago · 29 km deep · 40 km away
16. 3.976km W of Petrolia, CAThu, Aug 5, 8:21 AM PDT · 1886 days ago · 8 km deep · 40 km away · felt by 2
17. 2.49km W of Petrolia, CAWed, Aug 4, 2:11 PM PDT · 1886 days ago · 29 km deep · 28 km away
18. 2.818km W of Petrolia, CASun, Aug 1, 11:34 PM PDT · 1889 days ago · 33 km deep · 20 km away
19. 1.79km WSW of Petrolia, CASun, Aug 1, 7:00 AM PDT · 1890 days ago · 8 km deep · 28 km away
20. 1.910km SSE of Redway, CAFri, Jul 30, 3:36 PM PDT · 1891 days ago · 17 km deep · 87 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc73610261. Read Sun, Oct 4, 2026, 5:49 AM UTC.