M1.6 earthquake 22km SSW of Seal Beach, CA

Magnitude

1.6 (ML, local (Richter)), micro

Magnitude from

Southern California Seismic Network

Local time

Fri, Jul 23, 2021, 2:43 AM PDT

UTC

2021-07-23 09:43:46 UTC

Depth

13.1 km (8.1 mi), shallow

Epicenter

33.549° N, 118.169° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.3 km horizontally, 0.9 km in depth

Magnitude uncertainty

±0.15

Depth from

From location

Station coverage gap

91°

Stations used

33

• Huntington Beach, CaliforniaPopulation 201,899. Forecast20 kmSW
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast56 kmS

After

1. 1.61km NNW of South Gate, CASun, Jul 25, 8:26 PM PDT · 1897 days ago · 13 km deep · 46 km away
2. 2.10km W of Brea, CAWed, Jul 28, 12:53 AM PDT · 1895 days ago · 8 km deep · 48 km away · felt by 4
3. 2.743km WSW of Encinitas, CAThu, Jul 29, 8:29 PM PDT · 1893 days ago · 14 km deep · 79 km away · felt by 5
4. 1.62km ENE of Colton, CASat, Jul 31, 8:27 AM PDT · 1891 days ago · 16 km deep · 100 km away · felt by 1
5. 1.910km SSW of Rancho Palos Verdes, CAMon, Aug 2, 8:33 AM PDT · 1889 days ago · 0 km deep · 27 km away
6. 1.913km W of Carlsbad, CAWed, Aug 4, 4:19 AM PDT · 1887 days ago · 13 km deep · 78 km away
7. 1.52km WSW of Costa Mesa, CAWed, Aug 4, 6:18 AM PDT · 1887 days ago · 10 km deep · 25 km away
8. 2.013km SSE of Malibu Beach, CATue, Aug 10, 5:44 PM PDT · 1881 days ago · 10 km deep · 61 km away
9. 2.53km WSW of Fontana, CAThu, Aug 12, 8:15 PM PDT · 1879 days ago · 9 km deep · 86 km away · felt by 83
10. 1.81km NNW of La Puente, CAMon, Aug 16, 7:50 PM PDT · 1875 days ago · 9 km deep · 57 km away
11. 1.55km NNE of Fontana, CATue, Aug 17, 2:32 PM PDT · 1874 days ago · 7 km deep · 94 km away
12. 1.64km N of Rancho Cucamonga, CASat, Aug 21, 9:22 AM PDT · 1870 days ago · 11 km deep · 87 km away
13. 1.916km NNE of Avalon, CASun, Aug 22, 12:44 PM PDT · 1869 days ago · 17 km deep · 11 km away
14. 1.94km NE of Temecula, CASun, Aug 22, 9:39 PM PDT · 1869 days ago · 9 km deep · 97 km away
15. 2.139km WSW of Encinitas, CASat, Aug 28, 7:21 AM PDT · 1863 days ago · 15 km deep · 78 km away
16. 1.83km SSE of Garden Grove, CASat, Aug 28, 1:30 PM PDT · 1863 days ago · 15 km deep · 31 km away
17. 1.84km NW of Silver Lake, CAMon, Aug 30, 1:47 AM PDT · 1861 days ago · 11 km deep · 64 km away · felt by 3
18. 1.64km N of Fontana, CAMon, Aug 30, 3:29 AM PDT · 1861 days ago · 6 km deep · 92 km away · felt by 2
19. 1.74km N of Fontana, CAMon, Aug 30, 4:37 AM PDT · 1861 days ago · 7 km deep · 92 km away
20. 1.91km SSW of Malibu, CAThu, Sep 2, 10:30 AM PDT · 1858 days ago · 13 km deep · 78 km away · felt by 2
21. 1.730km SW of Dana Point, CAFri, Sep 3, 6:52 PM PDT · 1857 days ago · 14 km deep · 32 km away
22. 1.72km NNW of Inglewood, CAFri, Sep 3, 9:59 PM PDT · 1857 days ago · 8 km deep · 50 km away · felt by 11
23. 2.030km SW of Dana Point, CASat, Sep 4, 6:09 AM PDT · 1856 days ago · 13 km deep · 33 km away · felt by 2
24. 1.64km NE of Whittier, CASun, Sep 5, 7:45 AM PDT · 1855 days ago · 29 km deep · 53 km away
25. 2.85km SSE of Malibu Beach, CAMon, Sep 6, 9:37 AM PDT · 1854 days ago · 12 km deep · 67 km away · felt by 17
26. 2.65km NNE of Fontana, CAThu, Sep 9, 8:01 AM PDT · 1851 days ago · 7 km deep · 94 km away · felt by 16
27. 1.65km NNE of Fontana, CAThu, Sep 9, 8:57 AM PDT · 1851 days ago · 7 km deep · 94 km away
28. 2.63km NNW of La Verne, CAFri, Sep 10, 6:17 PM PDT · 1850 days ago · 6 km deep · 74 km away · felt by 50
29. 1.85km NE of Wildomar, CATue, Sep 14, 3:40 AM PDT · 1846 days ago · 15 km deep · 86 km away · felt by 4
30. 2.92km SSE of Lytle Creek, CATue, Sep 14, 2:36 PM PDT · 1846 days ago · 8 km deep · 99 km away · felt by 59
31. 2.91km NNE of San Fernando, CATue, Sep 14, 5:57 PM PDT · 1846 days ago · 7 km deep · 87 km away · felt by 400
32. 1.629km WSW of Camp Pendleton South, CAWed, Sep 15, 11:10 AM PDT · 1845 days ago · 11 km deep · 68 km away
33. 2.35km NE of Wildomar, CAFri, Sep 17, 1:09 PM PDT · 1843 days ago · 14 km deep · 87 km away · felt by 7
34. 4.32km E of Carson, CAFri, Sep 17, 7:58 PM PDT · 1843 days ago · 12 km deep · 33 km away · felt by 10,301 · tsunami flag
35. 2.82km ESE of Carson, CAFri, Sep 17, 11:06 PM PDT · 1843 days ago · 11 km deep · 32 km away · felt by 411
36. 2.02km SE of Carson, CASat, Sep 18, 10:33 PM PDT · 1842 days ago · 11 km deep · 32 km away · felt by 70
37. 2.50km ESE of Carson, CASun, Sep 19, 6:30 AM PDT · 1841 days ago · 11 km deep · 33 km away · felt by 160
38. 1.612km WNW of Malibu, CAMon, Sep 20, 4:11 AM PDT · 1840 days ago · 11 km deep · 89 km away
39. 1.62km E of Carson, CAMon, Sep 20, 11:36 PM PDT · 1840 days ago · 9 km deep · 32 km away · felt by 14

Before

1. 2.54km SE of Ontario, CAThu, Jul 22, 1:14 PM PDT · 1900 days ago · 16 km deep · 75 km away · felt by 6
2. 1.76km NW of Corona, CAThu, Jul 22, 11:26 AM PDT · 1900 days ago · 7 km deep · 65 km away
3. 2.09km WSW of Lytle Creek, CAWed, Jul 21, 7:48 PM PDT · 1901 days ago · 6 km deep · 92 km away · felt by 1
4. 1.93km WSW of Compton, CAWed, Jul 21, 3:28 AM PDT · 1901 days ago · 12 km deep · 38 km away
5. 1.75km ENE of Villa Park, CAMon, Jul 19, 8:03 PM PDT · 1903 days ago · 8 km deep · 49 km away
6. 1.811km NNE of Trabuco Canyon, CASun, Jul 18, 9:58 AM PDT · 1904 days ago · 8 km deep · 63 km away
7. 1.78km E of Yorba Linda, CASat, Jul 17, 1:34 PM PDT · 1905 days ago · 6 km deep · 56 km away
8. 1.66km S of Malibu Beach, CAFri, Jul 16, 4:15 PM PDT · 1906 days ago · 15 km deep · 68 km away
9. 1.57km NW of Rancho Cucamonga, CAMon, Jul 12, 10:56 PM PDT · 1910 days ago · 9 km deep · 85 km away
10. 1.55km NW of Fontana, CAMon, Jul 12, 8:30 AM PDT · 1910 days ago · 6 km deep · 90 km away
11. 1.85km NNW of Fontana, CASun, Jul 11, 12:10 AM PDT · 1912 days ago · 5 km deep · 91 km away
12. 1.96km SW of Fontana, CASat, Jul 10, 4:32 AM PDT · 1912 days ago · 6 km deep · 84 km away
13. 2.515km SSE of Malibu, CAFri, Jul 9, 3:33 PM PDT · 1913 days ago · 9 km deep · 64 km away · felt by 2
14. 1.96km S of Lytle Creek, CAThu, Jul 8, 12:47 AM PDT · 1915 days ago · 11 km deep · 96 km away · felt by 1
15. 1.75km SW of Fontana, CAWed, Jul 7, 8:57 PM PDT · 1915 days ago · 6 km deep · 84 km away
16. 2.311km E of Yorba Linda, CAWed, Jul 7, 10:25 AM PDT · 1915 days ago · 10 km deep · 57 km away · felt by 3
17. 1.617km W of Manhattan Beach, CATue, Jul 6, 10:31 PM PDT · 1916 days ago · 13 km deep · 53 km away
18. 1.91km SW of Sherman Oaks, CAMon, Jul 5, 12:58 AM PDT · 1918 days ago · 3 km deep · 71 km away · felt by 111
19. 3.44km NNW of Fontana, CASat, Jul 3, 1:22 AM PDT · 1920 days ago · 5 km deep · 91 km away · felt by 1,244
20. 1.86km SE of Ontario, CAFri, Jul 2, 5:07 PM PDT · 1920 days ago · 7 km deep · 75 km away

From the USGS Earthquake Hazards Program and its partner networks, event ci39750607. Read Sun, Oct 4, 2026, 7:55 PM UTC.