M1.9 earthquake 16km NNE of Avalon, CA

Magnitude

1.9 (ML, local (Richter)), micro

Magnitude from

Southern California Seismic Network

Local time

Sun, Aug 22, 2021, 12:44 PM PDT

UTC

2021-08-22 19:44:42 UTC

Depth

16.9 km (10.5 mi), shallow

Epicenter

33.475° N, 118.249° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.5 km horizontally, 1.3 km in depth

Magnitude uncertainty

±0.19

Depth from

From location

Station coverage gap

92°

Stations used

31

• Avalon, CaliforniaPopulation 3,799. Forecast16 kmNNE
• San Pedro, CaliforniaPopulation 83,556. Forecast29 kmS
• Huntington Beach, CaliforniaPopulation 201,899. Forecast31 kmSW
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast64 kmS

After

1. 2.139km WSW of Encinitas, CASat, Aug 28, 7:21 AM PDT · 1862 days ago · 15 km deep · 76 km away
2. 1.83km SSE of Garden Grove, CASat, Aug 28, 1:30 PM PDT · 1862 days ago · 15 km deep · 42 km away
3. 1.84km NW of Silver Lake, CAMon, Aug 30, 1:47 AM PDT · 1861 days ago · 11 km deep · 72 km away · felt by 3
4. 1.91km SSW of Malibu, CAThu, Sep 2, 10:30 AM PDT · 1857 days ago · 13 km deep · 78 km away · felt by 2
5. 1.730km SW of Dana Point, CAFri, Sep 3, 6:52 PM PDT · 1856 days ago · 14 km deep · 32 km away
6. 1.72km NNW of Inglewood, CAFri, Sep 3, 9:59 PM PDT · 1856 days ago · 8 km deep · 56 km away · felt by 11
7. 2.030km SW of Dana Point, CASat, Sep 4, 6:09 AM PDT · 1855 days ago · 13 km deep · 32 km away · felt by 2
8. 1.64km NE of Whittier, CASun, Sep 5, 7:45 AM PDT · 1854 days ago · 29 km deep · 63 km away
9. 2.85km SSE of Malibu Beach, CAMon, Sep 6, 9:37 AM PDT · 1853 days ago · 12 km deep · 69 km away · felt by 17
10. 2.63km NNW of La Verne, CAFri, Sep 10, 6:17 PM PDT · 1849 days ago · 6 km deep · 85 km away · felt by 50
11. 1.85km NE of Wildomar, CATue, Sep 14, 3:40 AM PDT · 1846 days ago · 15 km deep · 95 km away · felt by 4
12. 2.91km NNE of San Fernando, CATue, Sep 14, 5:57 PM PDT · 1845 days ago · 7 km deep · 93 km away · felt by 400
13. 1.629km WSW of Camp Pendleton South, CAWed, Sep 15, 11:10 AM PDT · 1844 days ago · 11 km deep · 68 km away
14. 2.35km NE of Wildomar, CAFri, Sep 17, 1:09 PM PDT · 1842 days ago · 14 km deep · 95 km away · felt by 7
15. 4.32km E of Carson, CAFri, Sep 17, 7:58 PM PDT · 1842 days ago · 12 km deep · 40 km away · felt by 10,301 · tsunami flag
16. 2.82km ESE of Carson, CAFri, Sep 17, 11:06 PM PDT · 1842 days ago · 11 km deep · 39 km away · felt by 411
17. 2.02km SE of Carson, CASat, Sep 18, 10:33 PM PDT · 1841 days ago · 11 km deep · 39 km away · felt by 70
18. 2.50km ESE of Carson, CASun, Sep 19, 6:30 AM PDT · 1840 days ago · 11 km deep · 40 km away · felt by 160
19. 1.612km WNW of Malibu, CAMon, Sep 20, 4:11 AM PDT · 1840 days ago · 11 km deep · 89 km away
20. 1.62km E of Carson, CAMon, Sep 20, 11:36 PM PDT · 1839 days ago · 9 km deep · 40 km away · felt by 14
21. 1.64km SE of Rancho Cucamonga, CATue, Sep 21, 6:24 AM PDT · 1838 days ago · 14 km deep · 94 km away
22. 2.61km ESE of Carson, CAThu, Sep 23, 7:58 PM PDT · 1836 days ago · 7 km deep · 39 km away · felt by 762
23. 1.97km ESE of San Pedro, CAFri, Sep 24, 2:57 PM PDT · 1835 days ago · 9 km deep · 26 km away
24. 1.85km NNW of Glen Avon, CAMon, Sep 27, 11:11 AM PDT · 1832 days ago · 5 km deep · 94 km away · felt by 3
25. 1.52km E of Carson, CAMon, Sep 27, 12:46 PM PDT · 1832 days ago · 8 km deep · 40 km away · felt by 9
26. 1.90km S of Carson, CATue, Sep 28, 12:12 AM PDT · 1832 days ago · 8 km deep · 39 km away · felt by 85
27. 1.82km E of Carson, CASat, Oct 2, 4:12 AM PDT · 1828 days ago · 9 km deep · 40 km away · felt by 10
28. 1.839km WSW of Carlsbad, CATue, Oct 5, 4:48 AM PDT · 1825 days ago · 3 km deep · 71 km away
29. 1.93km NNW of Rancho Cucamonga, CAWed, Oct 6, 4:19 PM PDT · 1823 days ago · 10 km deep · 97 km away
30. 1.60km E of Carson, CAThu, Oct 7, 8:52 PM PDT · 1822 days ago · 9 km deep · 40 km away · felt by 5
31. 1.78km ESE of San Pedro, CAMon, Oct 11, 12:41 AM PDT · 1819 days ago · 9 km deep · 25 km away · felt by 1
32. 1.51km SE of Sylmar, CAFri, Oct 15, 9:29 AM PDT · 1814 days ago · 11 km deep · 94 km away
33. 1.81km SE of Sylmar, CAFri, Oct 15, 10:12 AM PDT · 1814 days ago · 11 km deep · 94 km away · felt by 1
34. 1.81km S of Commerce, CASun, Oct 17, 3:39 PM PDT · 1812 days ago · 17 km deep · 58 km away · felt by 1
35. 1.93km WNW of Fontana, CAWed, Oct 20, 6:34 AM PDT · 1809 days ago · 7 km deep · 100 km away · felt by 2
36. 2.41km NW of View Park-Windsor Hills, CAThu, Oct 21, 6:58 AM PDT · 1808 days ago · 8 km deep · 60 km away · felt by 250

Before

1. 1.64km N of Rancho Cucamonga, CASat, Aug 21, 9:22 AM PDT · 1869 days ago · 11 km deep · 98 km away
2. 1.81km NNW of La Puente, CAMon, Aug 16, 7:50 PM PDT · 1874 days ago · 9 km deep · 67 km away
3. 2.53km WSW of Fontana, CAThu, Aug 12, 8:15 PM PDT · 1878 days ago · 9 km deep · 97 km away · felt by 83
4. 2.013km SSE of Malibu Beach, CATue, Aug 10, 5:44 PM PDT · 1880 days ago · 10 km deep · 62 km away
5. 1.52km WSW of Costa Mesa, CAWed, Aug 4, 6:18 AM PDT · 1886 days ago · 10 km deep · 35 km away
6. 1.913km W of Carlsbad, CAWed, Aug 4, 4:19 AM PDT · 1887 days ago · 13 km deep · 80 km away
7. 1.910km SSW of Rancho Palos Verdes, CAMon, Aug 2, 8:33 AM PDT · 1888 days ago · 0 km deep · 26 km away
8. 2.743km WSW of Encinitas, CAThu, Jul 29, 8:29 PM PDT · 1892 days ago · 14 km deep · 76 km away · felt by 5
9. 2.10km W of Brea, CAWed, Jul 28, 12:53 AM PDT · 1894 days ago · 8 km deep · 59 km away · felt by 4
10. 1.61km NNW of South Gate, CASun, Jul 25, 8:26 PM PDT · 1896 days ago · 13 km deep · 54 km away

From the USGS Earthquake Hazards Program and its partner networks, event ci40018128. Read Sun, Oct 4, 2026, 12:19 AM UTC.