M2.3 earthquake 11km WSW of Morro Bay, CA

Magnitude

2.3 (Md, duration), micro

Magnitude from

Northern California Seismic System

Local time

Sat, Sep 4, 2021, 9:34 AM PDT

UTC

2021-09-04 16:34:09 UTC

Depth

9.7 km (6.1 mi), shallow

Epicenter

35.335° N, 120.964° W

Region

California

Felt reports

2

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.4 km horizontally, 0.5 km in depth

Magnitude uncertainty

±0.16

Depth from

From location

Station coverage gap

206°, poorly surrounded by stations

Stations used

53

• Morro Bay, CaliforniaPopulation 10,639. Forecast11 kmWSW
• Santa Maria, CaliforniaPopulation 105,093. Forecast64 kmNW
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast287 kmWNW

After

1. 1.722km SSE of Lopez Point, CASun, Sep 5, 4:48 PM PDT · 1854 days ago · 12 km deep · 72 km away
2. 1.722km SSE of Lopez Point, CAMon, Sep 6, 9:52 AM PDT · 1854 days ago · 10 km deep · 72 km away
3. 2.313km NNE of Cambria, CAMon, Sep 13, 6:22 PM PDT · 1846 days ago · 7 km deep · 38 km away · felt by 2
4. 2.35km SSE of Parkfield, CAWed, Sep 15, 5:51 AM PDT · 1845 days ago · 5 km deep · 77 km away
5. 2.823km NW of Parkfield, CAWed, Sep 15, 7:45 PM PDT · 1844 days ago · 4 km deep · 85 km away · felt by 2
6. 2.211km NW of Parkfield, CAFri, Sep 24, 8:04 AM PDT · 1836 days ago · 10 km deep · 81 km away
7. 1.611km WSW of Templeton, CAFri, Sep 24, 8:20 PM PDT · 1835 days ago · 6 km deep · 25 km away · felt by 1
8. 2.810km W of Avenal, CASun, Sep 26, 10:52 AM PDT · 1834 days ago · 16 km deep · 100 km away · felt by 4
9. 3.24km NNW of Cholame, CATue, Sep 28, 12:41 PM PDT · 1832 days ago · 4 km deep · 76 km away · felt by 4
10. 1.66km NNW of Cholame, CASun, Oct 3, 11:36 PM PDT · 1826 days ago · 8 km deep · 76 km away
11. 1.78km SW of Atascadero, CAWed, Oct 13, 4:38 AM PDT · 1817 days ago · 7 km deep · 25 km away
12. 1.822km NNE of San Ardo, CAThu, Oct 14, 7:05 AM PDT · 1816 days ago · 4 km deep · 96 km away
13. 1.610km NNE of San Simeon, CAFri, Oct 15, 10:41 AM PDT · 1815 days ago · 8 km deep · 46 km away
14. 1.917km NNE of San Simeon, CAFri, Oct 15, 12:26 PM PDT · 1815 days ago · 6 km deep · 51 km away
15. 4.718km NW of San Simeon, CAMon, Oct 25, 4:42 PM PDT · 1804 days ago · 8 km deep · 58 km away · felt by 619 · tsunami flag
16. 3.517km NW of San Simeon, CAMon, Oct 25, 4:49 PM PDT · 1804 days ago · 6 km deep · 57 km away · felt by 35
17. 1.919km NW of San Simeon, CAMon, Oct 25, 5:02 PM PDT · 1804 days ago · 6 km deep · 59 km away · felt by 3
18. 1.817km NNW of San Simeon, CAMon, Oct 25, 6:15 PM PDT · 1804 days ago · 4 km deep · 57 km away
19. 2.218km NW of San Simeon, CAMon, Oct 25, 7:02 PM PDT · 1804 days ago · 7 km deep · 58 km away · felt by 2
20. 2.218km NNW of San Simeon, CAMon, Oct 25, 7:31 PM PDT · 1804 days ago · 6 km deep · 58 km away
21. 2.020km NNW of San Simeon, CAMon, Oct 25, 8:11 PM PDT · 1804 days ago · 5 km deep · 60 km away
22. 1.918km NNW of San Simeon, CAMon, Oct 25, 8:59 PM PDT · 1804 days ago · 6 km deep · 58 km away
23. 1.618km NNW of San Simeon, CAMon, Oct 25, 11:33 PM PDT · 1804 days ago · 5 km deep · 58 km away
24. 1.918km NNW of San Simeon, CAWed, Oct 27, 5:06 AM PDT · 1803 days ago · 7 km deep · 58 km away
25. 1.918km NNW of San Simeon, CAWed, Oct 27, 8:29 PM PDT · 1802 days ago · 6 km deep · 58 km away
26. 2.24km ESE of Cholame, CAFri, Oct 29, 2:23 PM PDT · 1800 days ago · 13 km deep · 76 km away · felt by 1
27. 1.822km NW of Parkfield, CAFri, Oct 29, 3:25 PM PDT · 1800 days ago · 0 km deep · 84 km away
28. 1.619km NNW of San Simeon, CASat, Oct 30, 3:00 PM PDT · 1799 days ago · 3 km deep · 59 km away
29. 1.624km NW of San Simeon, CASun, Oct 31, 12:51 AM PDT · 1799 days ago · 13 km deep · 64 km away

Before

1. 1.711km WSW of Templeton, CATue, Aug 31, 7:51 PM PDT · 1859 days ago · 6 km deep · 25 km away
2. 2.017km N of San Simeon, CAMon, Aug 30, 11:55 AM PDT · 1861 days ago · 10 km deep · 56 km away
3. 1.813km N of San Simeon, CASun, Aug 29, 8:43 AM PDT · 1862 days ago · 9 km deep · 51 km away
4. 1.57km NNW of Cholame, CASun, Aug 29, 6:49 AM PDT · 1862 days ago · 4 km deep · 76 km away
5. 1.923km NNW of San Simeon, CAFri, Aug 27, 1:32 PM PDT · 1863 days ago · 12 km deep · 63 km away
6. 1.825km NW of Parkfield, CAFri, Aug 27, 1:29 AM PDT · 1864 days ago · 5 km deep · 86 km away
7. 1.923km NW of Parkfield, CAThu, Aug 26, 11:45 AM PDT · 1865 days ago · 6 km deep · 84 km away · felt by 1
8. 1.827km NW of San Simeon, CAWed, Aug 25, 8:11 AM PDT · 1866 days ago · 10 km deep · 67 km away
9. 2.013km SW of Guadalupe, CAWed, Aug 25, 12:19 AM PDT · 1866 days ago · 2 km deep · 55 km away · felt by 2
10. 1.722km NW of San Simeon, CATue, Aug 24, 5:23 PM PDT · 1866 days ago · 4 km deep · 62 km away
11. 1.931km WNW of San Simeon, CAMon, Aug 23, 10:38 PM PDT · 1867 days ago · 6 km deep · 65 km away
12. 1.65km NW of Parkfield, CAMon, Aug 23, 2:08 AM PDT · 1868 days ago · 5 km deep · 79 km away
13. 2.03km ENE of Lopez Point, CASat, Aug 21, 1:10 PM PDT · 1869 days ago · 9 km deep · 93 km away
14. 1.82km ENE of Cayucos, CAThu, Aug 19, 12:17 PM PDT · 1872 days ago · 0 km deep · 15 km away
15. 2.419km NNW of San Simeon, CAWed, Aug 18, 4:15 AM PDT · 1873 days ago · 8 km deep · 58 km away
16. 2.62km SSE of Parkfield, CASun, Aug 15, 10:03 PM PDT · 1875 days ago · 6 km deep · 78 km away · felt by 3
17. 2.113km NW of Parkfield, CASun, Aug 15, 5:27 PM PDT · 1875 days ago · 10 km deep · 82 km away
18. 1.923km NNE of San Ardo, CATue, Aug 10, 8:27 AM PDT · 1881 days ago · 9 km deep · 97 km away
19. 1.720km NW of Parkfield, CAMon, Aug 9, 1:13 AM PDT · 1882 days ago · 4 km deep · 84 km away
20. 2.33km SE of San Ardo, CASat, Aug 7, 12:58 AM PDT · 1884 days ago · 10 km deep · 74 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc73620076. Read Sun, Oct 4, 2026, 7:35 AM UTC.