M1.6 earthquake 8km N of Viola, CA

Magnitude

1.6 (Md, duration), micro

Magnitude from

Northern California Seismic System

Local time

Mon, Mar 28, 2022, 9:54 AM PDT

UTC

2022-03-28 16:54:49 UTC

Depth

4.3 km (2.7 mi), shallow

Epicenter

40.591° N, 121.668° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.3 km horizontally, 1.4 km in depth

Magnitude uncertainty

±0.27

Depth from

From location

Station coverage gap

92°

Stations used

12

• Shingletown, CaliforniaPopulation 2,283. Forecast22 kmENE
• Anderson, CaliforniaPopulation 10,217. Forecast56 kmENE
• Chico, CaliforniaPopulation 121,345. Forecast97 kmN
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast787 kmNNW

After

1. 1.55km N of Millville, CAMon, Mar 28, 1:17 PM PDT · 1651 days ago · 13 km deep · 44 km away
2. 1.98km N of Viola, CAMon, Mar 28, 1:31 PM PDT · 1651 days ago · 4 km deep · 1 km away
3. 2.49km WSW of Shingletown, CAMon, Mar 28, 3:07 PM PDT · 1651 days ago · 12 km deep · 31 km away
4. 1.711km WNW of Shasta Lake, CAMon, Mar 28, 7:38 PM PDT · 1650 days ago · 16 km deep · 70 km away · felt by 1
5. 1.911km NW of Shasta Lake, CAMon, Mar 28, 7:40 PM PDT · 1650 days ago · 19 km deep · 70 km away · felt by 1
6. 1.711km NW of Shasta Lake, CATue, Mar 29, 7:06 AM PDT · 1650 days ago · 21 km deep · 70 km away · felt by 1
7. 1.913km SSE of Anderson, CAFri, Apr 1, 9:50 AM PDT · 1647 days ago · 13 km deep · 58 km away · felt by 1
8. 1.69km NE of Shingletown, CAFri, Apr 1, 12:02 PM PDT · 1647 days ago · 17 km deep · 13 km away
9. 2.314km SSE of Anderson, CASat, Apr 2, 12:32 AM PDT · 1646 days ago · 18 km deep · 58 km away · felt by 1
10. 2.411km WNW of Chester, CATue, Apr 5, 3:05 AM PDT · 1643 days ago · 8 km deep · 38 km away
11. 2.510km WNW of Chester, CATue, Apr 5, 9:37 AM PDT · 1643 days ago · 7 km deep · 39 km away
12. 1.68km NNW of Bella Vista, CAWed, Apr 6, 7:02 PM PDT · 1641 days ago · 19 km deep · 52 km away
13. 1.920km NE of Red Bluff, CAThu, Apr 7, 9:47 PM PDT · 1640 days ago · 14 km deep · 47 km away
14. 1.711km W of Shingletown, CAFri, Apr 8, 12:07 PM PDT · 1640 days ago · 14 km deep · 32 km away
15. 2.414km NNE of Shingletown, CAWed, Apr 13, 10:51 AM PDT · 1635 days ago · 10 km deep · 12 km away
16. 2.811km N of McArthur, CAThu, Apr 14, 2:06 PM PDT · 1634 days ago · -1 km deep · 66 km away · felt by 8
17. 1.64km S of Bella Vista, CAThu, Apr 14, 8:05 PM PDT · 1633 days ago · 8 km deep · 47 km away · felt by 1
18. 1.616km SSE of Manton, CASun, Apr 17, 6:46 AM PDT · 1631 days ago · 11 km deep · 36 km away
19. 1.824km S of Manton, CATue, Apr 26, 1:38 AM PDT · 1622 days ago · 6 km deep · 45 km away
20. 2.79km N of French Gulch, CAThu, Apr 28, 3:34 AM PDT · 1620 days ago · 12 km deep · 85 km away
21. 1.910km N of French Gulch, CAThu, Apr 28, 5:18 AM PDT · 1620 days ago · 11 km deep · 85 km away
22. 1.84km NNE of Viola, CAFri, Apr 29, 1:35 AM PDT · 1619 days ago · 4 km deep · 4 km away
23. 1.615km E of Viola, CAThu, May 12, 5:55 AM PDT · 1606 days ago · 0 km deep · 17 km away
24. 1.74km SW of Millville, CASat, May 14, 4:37 AM PDT · 1604 days ago · 17 km deep · 47 km away
25. 2.03km SSW of East Shore, CASat, May 14, 10:53 AM PDT · 1604 days ago · 6 km deep · 64 km away
26. 1.913km ESE of Viola, CASun, May 15, 8:51 AM PDT · 1603 days ago · 6 km deep · 16 km away
27. 1.913km N of McCloud, CAWed, May 18, 5:52 PM PDT · 1599 days ago · 7 km deep · 95 km away
28. 2.75km N of Hamilton City, CAMon, May 23, 2:49 PM PDT · 1595 days ago · 17 km deep · 94 km away

Before

1. 2.05km NE of Hamilton Branch, CASat, Mar 26, 11:10 AM PDT · 1653 days ago · 4 km deep · 62 km away
2. 2.13km SW of East Shore, CAFri, Mar 25, 1:36 PM PDT · 1654 days ago · 9 km deep · 63 km away
3. 2.011km NNW of Chico, CAFri, Mar 25, 7:13 AM PDT · 1654 days ago · 8 km deep · 86 km away
4. 1.69km SE of Millville, CAThu, Mar 24, 12:16 PM PDT · 1655 days ago · 14 km deep · 38 km away
5. 1.810km ESE of Anderson, CAWed, Mar 23, 2:11 PM PDT · 1656 days ago · 26 km deep · 48 km away
6. 1.723km N of Shasta Lake, CAWed, Mar 23, 10:27 AM PDT · 1656 days ago · 14 km deep · 68 km away
7. 1.810km ESE of Anderson, CAWed, Mar 23, 3:37 AM PDT · 1656 days ago · 27 km deep · 49 km away
8. 1.816km W of Round Mountain, CATue, Mar 22, 11:48 AM PDT · 1657 days ago · 4 km deep · 46 km away
9. 2.43km S of Manton, CASun, Mar 20, 5:39 AM PDT · 1659 days ago · 11 km deep · 28 km away
10. 1.55km N of Millville, CASat, Mar 19, 4:43 AM PDT · 1660 days ago · 13 km deep · 43 km away
11. 1.69km WSW of Almanor, CAThu, Mar 17, 11:35 PM PDT · 1661 days ago · 10 km deep · 55 km away
12. 1.512km W of Round Mountain, CAWed, Mar 16, 7:31 PM PDT · 1662 days ago · 10 km deep · 42 km away
13. 2.114km E of Big Bend, CAFri, Mar 11, 5:44 PM PST · 1667 days ago · 3 km deep · 49 km away
14. 1.614km NNE of Mineral, CAMon, Mar 7, 12:54 AM PST · 1672 days ago · 4 km deep · 18 km away
15. 1.814km W of Almanor, CASun, Mar 6, 3:45 AM PST · 1673 days ago · 9 km deep · 51 km away
16. 1.610km WNW of Montgomery Creek, CAMon, Feb 28, 4:20 PM PST · 1679 days ago · 11 km deep · 44 km away
17. 2.326km SE of Fall River Mills, CASun, Feb 27, 10:59 PM PST · 1679 days ago · 16 km deep · 51 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc73711571. Read Sun, Oct 4, 2026, 12:13 PM UTC.