M2.1 earthquake 7km SSE of Pine Hills, CA

Magnitude

2.1 (Md, duration), micro

Magnitude from

Northern California Seismic System

Local time

Fri, Oct 8, 2021, 2:39 PM PDT

UTC

2021-10-08 21:39:05 UTC

Depth

24.7 km (15.3 mi), shallow

Epicenter

40.675° N, 124.120° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.6 km horizontally, 0.7 km in depth

Magnitude uncertainty

±0.28

Depth from

From location

Station coverage gap

44°

Stations used

29

• Pine Hills, CaliforniaPopulation 3,131. Forecast7 kmSSE
• Fortuna, CaliforniaPopulation 12,000. Forecast9 kmNNE
• Chico, CaliforniaPopulation 121,345. Forecast221 kmWNW

After

1. 2.856km W of Ferndale, CAFri, Oct 8, 8:49 PM PDT · 1822 days ago · 20 km deep · 68 km away
2. 3.818km WSW of Petrolia, CATue, Oct 12, 4:29 AM PDT · 1819 days ago · 21 km deep · 53 km away · felt by 11
3. 1.713km E of Hydesville, CAThu, Oct 14, 5:45 AM PDT · 1817 days ago · 24 km deep · 19 km away
4. 2.08km SSE of Redway, CAFri, Oct 15, 11:18 PM PDT · 1815 days ago · 17 km deep · 75 km away
5. 1.98km SSE of Redway, CAFri, Oct 15, 11:19 PM PDT · 1815 days ago · 17 km deep · 75 km away
6. 1.65km NW of Redway, CASun, Oct 17, 4:25 AM PDT · 1814 days ago · 23 km deep · 63 km away
7. 1.74km NNW of Ferndale, CASun, Oct 17, 7:20 AM PDT · 1814 days ago · 17 km deep · 15 km away
8. 1.719km WNW of Petrolia, CAMon, Oct 18, 9:54 PM PDT · 1812 days ago · 18 km deep · 43 km away
9. 2.656km W of Ferndale, CAWed, Oct 20, 12:27 PM PDT · 1811 days ago · 25 km deep · 69 km away
10. 2.212km WSW of Petrolia, CAWed, Oct 20, 7:43 PM PDT · 1810 days ago · 9 km deep · 49 km away
11. 2.923km W of Petrolia, CAThu, Oct 21, 6:10 AM PDT · 1810 days ago · 20 km deep · 56 km away · felt by 1
12. 2.426km WNW of Petrolia, CAFri, Oct 22, 9:40 PM PDT · 1808 days ago · 29 km deep · 49 km away
13. 1.913km ENE of Hydesville, CAWed, Oct 27, 8:17 PM PDT · 1803 days ago · 21 km deep · 16 km away
14. 2.519km W of Petrolia, CASat, Oct 30, 4:24 PM PDT · 1800 days ago · 19 km deep · 49 km away
15. 2.58km E of Willow Creek, CATue, Nov 2, 8:03 AM PDT · 1798 days ago · 26 km deep · 58 km away
16. 4.45km NNE of Petrolia, CATue, Nov 2, 5:24 PM PDT · 1797 days ago · 30 km deep · 36 km away · felt by 114 · tsunami flag
17. 2.34km NNE of Petrolia, CATue, Nov 2, 5:27 PM PDT · 1797 days ago · 30 km deep · 37 km away
18. 2.66km NNE of Petrolia, CATue, Nov 2, 5:39 PM PDT · 1797 days ago · 28 km deep · 35 km away · felt by 2
19. 2.56km N of Petrolia, CATue, Nov 2, 5:41 PM PDT · 1797 days ago · 29 km deep · 36 km away
20. 3.06km NNE of Petrolia, CATue, Nov 2, 6:33 PM PDT · 1797 days ago · 30 km deep · 36 km away · felt by 10
21. 2.53km N of Petrolia, CATue, Nov 2, 9:55 PM PDT · 1797 days ago · 28 km deep · 38 km away
22. 2.028km NE of Redway, CATue, Nov 2, 9:59 PM PDT · 1797 days ago · 27 km deep · 60 km away
23. 1.75km NNE of Petrolia, CATue, Nov 2, 10:10 PM PDT · 1797 days ago · 28 km deep · 36 km away
24. 2.45km NNW of Petrolia, CATue, Nov 2, 10:58 PM PDT · 1797 days ago · 29 km deep · 37 km away
25. 2.48km SSE of Petrolia, CAFri, Nov 5, 10:52 AM PDT · 1795 days ago · 21 km deep · 48 km away
26. 1.86km NNE of Petrolia, CASat, Nov 6, 8:33 AM PDT · 1794 days ago · 28 km deep · 35 km away
27. 1.917km WNW of Cape Vizcaino, CASat, Nov 6, 5:47 PM PDT · 1793 days ago · 1 km deep · 99 km away
28. 2.86km NNE of Petrolia, CATue, Nov 9, 11:48 AM PST · 1791 days ago · 27 km deep · 35 km away
29. 2.96km NNE of Petrolia, CAThu, Nov 11, 5:35 AM PST · 1789 days ago · 29 km deep · 35 km away
30. 2.516km SSE of Somes Bar, CAFri, Nov 12, 3:45 AM PST · 1788 days ago · 38 km deep · 90 km away
31. 2.037km W of Petrolia, CAFri, Nov 12, 7:05 AM PST · 1788 days ago · 19 km deep · 65 km away
32. 2.212km WNW of Petrolia, CASat, Nov 13, 1:12 PM PST · 1787 days ago · 17 km deep · 43 km away
33. 1.72km N of Redway, CAFri, Nov 19, 7:08 PM PST · 1780 days ago · 22 km deep · 64 km away
34. 3.020km W of Petrolia, CAMon, Nov 22, 1:22 PM PST · 1778 days ago · 19 km deep · 54 km away · felt by 4
35. 2.415km WSW of Petrolia, CATue, Nov 23, 12:24 AM PST · 1777 days ago · 17 km deep · 51 km away · felt by 1
36. 2.747km W of Petrolia, CATue, Nov 23, 11:11 PM PST · 1776 days ago · 12 km deep · 70 km away
37. 2.421km SSE of Willow Creek, CAWed, Nov 24, 1:26 AM PST · 1776 days ago · 21 km deep · 51 km away
38. 2.647km W of Petrolia, CAWed, Nov 24, 3:14 PM PST · 1775 days ago · 11 km deep · 69 km away
39. 2.29km ESE of Willow Creek, CAWed, Nov 24, 10:18 PM PST · 1775 days ago · 22 km deep · 55 km away
40. 2.313km SE of Petrolia, CAThu, Nov 25, 1:18 AM PST · 1775 days ago · 12 km deep · 47 km away
41. 2.615km SE of Petrolia, CAThu, Nov 25, 2:10 AM PST · 1775 days ago · 11 km deep · 48 km away · felt by 1
42. 2.59km NNE of Hayfork, CASun, Nov 28, 12:56 AM PST · 1772 days ago · 31 km deep · 83 km away
43. 2.718km W of Petrolia, CASun, Nov 28, 8:36 PM PST · 1771 days ago · 21 km deep · 48 km away
44. 1.84km N of Hydesville, CAMon, Nov 29, 4:51 PM PST · 1770 days ago · 19 km deep · 10 km away
45. 2.774km W of Petrolia, CAMon, Nov 29, 7:14 PM PST · 1770 days ago · 9 km deep · 99 km away
46. 2.419km W of Petrolia, CATue, Dec 7, 8:22 AM PST · 1763 days ago · 10 km deep · 52 km away
47. 2.826km W of Petrolia, CATue, Dec 7, 1:06 PM PST · 1763 days ago · 12 km deep · 59 km away

Before

1. 1.612km SE of Petrolia, CAFri, Oct 8, 1:05 PM PDT · 1823 days ago · 11 km deep · 48 km away
2. 2.757km W of Ferndale, CAFri, Oct 8, 5:06 AM PDT · 1823 days ago · 9 km deep · 70 km away
3. 2.856km W of Ferndale, CAThu, Oct 7, 6:08 PM PDT · 1823 days ago · 24 km deep · 68 km away
4. 1.818km E of Rio Dell, CAThu, Oct 7, 8:37 AM PDT · 1824 days ago · 20 km deep · 29 km away
5. 2.018km E of Rio Dell, CAWed, Oct 6, 7:40 PM PDT · 1824 days ago · 20 km deep · 28 km away
6. 2.414km SW of Ferndale, CATue, Oct 5, 11:21 AM PDT · 1826 days ago · 23 km deep · 30 km away
7. 3.264km WNW of Petrolia, CATue, Oct 5, 8:54 AM PDT · 1826 days ago · 11 km deep · 80 km away · felt by 1
8. 2.018km ESE of Willow Creek, CAMon, Oct 4, 9:05 PM PDT · 1826 days ago · 23 km deep · 62 km away
9. 2.320km ENE of Willow Creek, CAMon, Oct 4, 7:35 PM PDT · 1826 days ago · 36 km deep · 70 km away
10. 2.59km SW of Petrolia, CASat, Oct 2, 1:10 AM PDT · 1829 days ago · 33 km deep · 49 km away
11. 2.87km WSW of Petrolia, CAWed, Sep 29, 11:37 PM PDT · 1831 days ago · 30 km deep · 46 km away · felt by 1
12. 1.926km ESE of Rio Dell, CAWed, Sep 29, 8:49 AM PDT · 1832 days ago · 20 km deep · 38 km away
13. 2.318km E of Willow Creek, CATue, Sep 28, 9:05 AM PDT · 1833 days ago · 25 km deep · 67 km away
14. 2.713km SE of Petrolia, CAMon, Sep 27, 3:27 PM PDT · 1834 days ago · 12 km deep · 46 km away
15. 2.658km W of Petrolia, CASun, Sep 26, 12:54 PM PDT · 1835 days ago · 19 km deep · 81 km away
16. 1.917km W of Humboldt Hill, CASun, Sep 26, 8:38 AM PDT · 1835 days ago · 21 km deep · 23 km away
17. 3.613km SE of Petrolia, CASun, Sep 26, 1:51 AM PDT · 1835 days ago · 12 km deep · 47 km away · felt by 12
18. 2.021km WSW of Petrolia, CASat, Sep 25, 7:06 PM PDT · 1835 days ago · 20 km deep · 55 km away
19. 2.873km W of Ferndale, CASat, Sep 25, 1:18 PM PDT · 1836 days ago · 7 km deep · 85 km away · felt by 3
20. 2.412km SE of Weitchpec, CASat, Sep 25, 1:54 AM PDT · 1836 days ago · 37 km deep · 66 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc73637165. Read Mon, Oct 5, 2026, 10:41 AM UTC.