M1.8 earthquake 10km ESE of Millville, CA

Magnitude

1.8 (Md, duration), micro

Magnitude from

Northern California Seismic System

Local time

Sat, Dec 18, 2021, 3:39 PM PST

UTC

2021-12-18 23:39:01 UTC

Depth

16.2 km (10.1 mi), shallow

Epicenter

40.516° N, 122.074° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.5 km horizontally, 0.9 km in depth

Magnitude uncertainty

±0.18

Depth from

From location

Station coverage gap

77°

Stations used

12

• Millville, CaliforniaPopulation 727. Forecast9 kmESE
• Anderson, CaliforniaPopulation 10,217. Forecast20 kmENE
• Chico, CaliforniaPopulation 121,345. Forecast90 kmNNW
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast794 kmNNW

After

1. 2.421km SSE of Mineral, CAWed, Dec 22, 3:50 AM PST · 1747 days ago · 15 km deep · 62 km away · felt by 2
2. 2.39km WSW of Shingletown, CAWed, Dec 22, 9:18 PM PST · 1746 days ago · 11 km deep · 9 km away
3. 1.67km WSW of Shingletown, CAThu, Dec 23, 6:05 AM PST · 1746 days ago · 13 km deep · 10 km away · felt by 1
4. 1.629 km NW of Susanville, CaliforniaMon, Dec 27, 7:38 AM PST · 1742 days ago · 0 km deep · 98 km away
5. 2.33km ENE of Prattville, CAWed, Dec 29, 1:11 AM PST · 1740 days ago · 6 km deep · 87 km away
6. 2.53km E of Prattville, CAWed, Dec 29, 6:32 AM PST · 1740 days ago · 5 km deep · 87 km away · felt by 2
7. 2.912km SE of Mineral, CAThu, Dec 30, 10:07 AM PST · 1739 days ago · 8 km deep · 58 km away · felt by 3
8. 2.28km W of Chester, CASun, Jan 2, 10:22 AM PST · 1736 days ago · 9 km deep · 67 km away
9. 1.811km ESE of Millville, CATue, Jan 4, 9:01 PM PST · 1733 days ago · 12 km deep · 1 km away
10. 1.724km N of Shasta Lake, CAThu, Jan 13, 6:19 PM PST · 1725 days ago · 18 km deep · 51 km away
11. 1.99km ESE of Millville, CAFri, Jan 21, 1:10 AM PST · 1717 days ago · 18 km deep · 2 km away
12. 1.56km NNE of Millville, CAFri, Jan 21, 8:04 PM PST · 1716 days ago · 13 km deep · 13 km away
13. 2.324km NNE of Forest Ranch, CASun, Jan 23, 2:22 AM PST · 1715 days ago · 9 km deep · 64 km away
14. 1.88km NNW of Bella Vista, CATue, Jan 25, 9:28 AM PST · 1713 days ago · 19 km deep · 27 km away
15. 2.341km S of Hayfork, CAWed, Jan 26, 12:08 PM PST · 1712 days ago · 33 km deep · 97 km away
16. 1.68km NNW of Bella Vista, CAWed, Jan 26, 4:45 PM PST · 1712 days ago · 19 km deep · 27 km away
17. 1.74km ESE of Chester, CASat, Jan 29, 6:21 AM PST · 1709 days ago · 9 km deep · 79 km away
18. 1.85km E of Chester, CASat, Jan 29, 6:21 AM PST · 1709 days ago · 8 km deep · 80 km away
19. 1.615km W of Round Mountain, CATue, Feb 1, 2:52 AM PST · 1706 days ago · 9 km deep · 29 km away
20. 2.14km NNW of Canyondam, CAThu, Feb 3, 11:00 PM PST · 1703 days ago · 6 km deep · 90 km away
21. 1.72 km SW of Canyondam, CaliforniaThu, Feb 3, 11:12 PM PST · 1703 days ago · 4 km deep · 92 km away
22. 1.919km NNE of Alder Springs, CAMon, Feb 7, 7:29 AM PST · 1700 days ago · 16 km deep · 93 km away
23. 1.86km NNE of Millville, CAWed, Feb 9, 4:14 PM PST · 1698 days ago · 12 km deep · 13 km away
24. 1.62km N of McCloud, CAFri, Feb 11, 6:35 AM PST · 1696 days ago · 10 km deep · 85 km away
25. 1.83km N of McCloud, CAFri, Feb 11, 7:52 AM PST · 1696 days ago · 10 km deep · 86 km away
26. 2.03km S of Canyondam, CASun, Feb 13, 12:05 PM PST · 1694 days ago · 0 km deep · 94 km away
27. 1.923km N of Shasta Lake, CAMon, Feb 14, 4:33 PM PST · 1693 days ago · 11 km deep · 49 km away · felt by 1
28. 2.76km ENE of Shasta, CATue, Feb 15, 6:10 PM PST · 1692 days ago · 22 km deep · 32 km away · felt by 17

Before

1. 2.221km NE of Viola, CATue, Dec 14, 10:40 PM PST · 1754 days ago · 12 km deep · 50 km away
2. 1.727km N of Shasta Lake, CASat, Dec 11, 12:54 AM PST · 1758 days ago · 14 km deep · 51 km away
3. 1.62km E of Prattville, CAThu, Dec 9, 10:29 PM PST · 1759 days ago · 4 km deep · 87 km away
4. 2.82km ENE of Prattville, CAThu, Dec 9, 6:39 PM PST · 1759 days ago · 6 km deep · 86 km away · felt by 10
5. 2.52km ENE of Prattville, CAThu, Dec 9, 5:49 PM PST · 1760 days ago · 5 km deep · 86 km away · felt by 1
6. 1.823km N of Shasta Lake, CAThu, Dec 9, 2:42 PM PST · 1760 days ago · 10 km deep · 48 km away
7. 1.71km NE of Shasta Lake, CAThu, Dec 9, 9:45 AM PST · 1760 days ago · 16 km deep · 31 km away
8. 1.713km NNE of Shingletown, CATue, Dec 7, 8:08 PM PST · 1761 days ago · 10 km deep · 23 km away
9. 1.99km E of Montgomery Creek, CASat, Dec 4, 3:11 AM PST · 1765 days ago · 13 km deep · 43 km away
10. 2.59km NNE of Hayfork, CASun, Nov 28, 12:56 AM PST · 1771 days ago · 31 km deep · 90 km away
11. 2.416km SSE of Mineral, CASat, Nov 27, 2:31 PM PST · 1772 days ago · 6 km deep · 59 km away
12. 1.712km WSW of Chester, CASat, Nov 27, 10:36 AM PST · 1772 days ago · 7 km deep · 66 km away
13. 1.58km SSE of Mineral, CASat, Nov 27, 7:14 AM PST · 1772 days ago · 10 km deep · 51 km away
14. 1.612km W of Chester, CASat, Nov 27, 2:39 AM PST · 1772 days ago · 7 km deep · 65 km away
15. 1.711km NNE of Bella Vista, CAFri, Nov 26, 11:03 PM PST · 1772 days ago · 10 km deep · 25 km away
16. 1.77km SSE of Mineral, CAFri, Nov 26, 7:28 PM PST · 1772 days ago · 12 km deep · 51 km away
17. 1.612km N of Mineral, CAWed, Nov 24, 10:25 AM PST · 1775 days ago · 4 km deep · 45 km away
18. 1.93km NE of Viola, CAWed, Nov 24, 8:08 AM PST · 1775 days ago · 6 km deep · 36 km away
19. 2.36km ENE of Shasta, CATue, Nov 23, 12:23 AM PST · 1776 days ago · 22 km deep · 32 km away
20. 2.82km NE of Almanor, CASat, Nov 20, 3:52 AM PST · 1779 days ago · 8 km deep · 84 km away · felt by 5

From the USGS Earthquake Hazards Program and its partner networks, event nc73665526. Read Sun, Oct 4, 2026, 2:05 PM UTC.