M2.2 earthquake 6km SSE of Riverdale, CA

Magnitude

2.2 (Md, duration), micro

Magnitude from

Northern California Seismic System

Local time

Sun, May 23, 2021, 8:41 PM PDT

UTC

2021-05-24 03:41:12 UTC

Depth

15.3 km (9.5 mi), shallow

Epicenter

36.384° N, 119.831° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.7 km horizontally, 1.0 km in depth

Magnitude uncertainty

±0.32

Depth from

From location

Station coverage gap

134°

Stations used

16

• Riverdale, CaliforniaPopulation 3,153. Forecast6 kmSSE
• Lemoore, CaliforniaPopulation 25,647. Forecast10 kmNNW
• Fresno, CaliforniaPopulation 542,107. Forecast41 kmS
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast297 kmNNW

After

1. 1.718km NW of Parkfield, CAWed, May 26, 4:46 AM PDT · 1957 days ago · 4 km deep · 78 km away
2. 1.711km WSW of Huron, CAThu, May 27, 1:31 AM PDT · 1956 days ago · 7 km deep · 43 km away
3. 2.08km W of Corcoran, CAThu, May 27, 11:41 PM PDT · 1955 days ago · 13 km deep · 35 km away
4. 1.518km NW of Parkfield, CAFri, May 28, 12:07 AM PDT · 1955 days ago · 4 km deep · 78 km away
5. 2.58km WSW of Corcoran, CAFri, May 28, 8:55 AM PDT · 1955 days ago · 15 km deep · 37 km away · felt by 2
6. 1.922km NE of San Ardo, CASat, May 29, 5:08 AM PDT · 1954 days ago · 7 km deep · 84 km away
7. 1.923km NE of San Ardo, CASun, May 30, 2:10 PM PDT · 1952 days ago · 7 km deep · 86 km away
8. 1.922km NE of San Ardo, CATue, Jun 1, 4:22 AM PDT · 1951 days ago · 11 km deep · 85 km away
9. 1.620km S of Kettleman City, CAWed, Jun 2, 11:23 PM PDT · 1949 days ago · 11 km deep · 63 km away
10. 1.524km NW of New Idria, CASat, Jun 5, 3:08 AM PDT · 1947 days ago · 4 km deep · 94 km away
11. 2.28km W of Corcoran, CASun, Jun 6, 4:24 AM PDT · 1946 days ago · 16 km deep · 37 km away
12. 2.38km WSW of Corcoran, CAWed, Jun 9, 2:18 PM PDT · 1942 days ago · 16 km deep · 37 km away
13. 1.616km NW of Parkfield, CAFri, Jun 11, 1:08 AM PDT · 1941 days ago · 2 km deep · 78 km away
14. 1.621km NW of Parkfield, CASat, Jun 12, 2:00 PM PDT · 1939 days ago · 7 km deep · 79 km away
15. 1.810km NW of Parkfield, CASat, Jun 12, 5:44 PM PDT · 1939 days ago · 10 km deep · 78 km away
16. 2.412km NW of Parkfield, CASat, Jun 12, 6:12 PM PDT · 1939 days ago · 10 km deep · 78 km away
17. 1.610km NW of Parkfield, CAMon, Jun 14, 12:24 AM PDT · 1938 days ago · 10 km deep · 78 km away
18. 2.49km WSW of Corcoran, CATue, Jun 15, 9:31 AM PDT · 1937 days ago · 16 km deep · 38 km away
19. 2.223km SW of New Idria, CAWed, Jun 23, 11:47 AM PDT · 1929 days ago · 7 km deep · 94 km away
20. 2.36km E of New Idria, CAThu, Jun 24, 2:37 PM PDT · 1927 days ago · 5 km deep · 70 km away
21. 2.36km NW of Parkfield, CAWed, Jun 30, 7:33 AM PDT · 1922 days ago · 5 km deep · 77 km away
22. 3.19km NW of Parkfield, CAFri, Jul 2, 11:36 PM PDT · 1919 days ago · 11 km deep · 77 km away · felt by 3
23. 3.18km NW of Parkfield, CASat, Jul 3, 3:41 AM PDT · 1919 days ago · 10 km deep · 77 km away · felt by 11
24. 2.24km SW of Armona, CASat, Jul 3, 8:38 PM PDT · 1918 days ago · 15 km deep · 14 km away
25. 2.25km SW of North Fork, CASun, Jul 4, 6:53 PM PDT · 1917 days ago · 32 km deep · 94 km away
26. 2.124km SSW of South Dos Palos, CAMon, Jul 12, 3:43 AM PDT · 1910 days ago · 0 km deep · 89 km away
27. 1.726km SSW of South Dos Palos, CAMon, Jul 12, 7:23 AM PDT · 1910 days ago · 0 km deep · 90 km away
28. 2.822km ENE of San Lucas, CAMon, Jul 12, 9:44 PM PDT · 1909 days ago · 8 km deep · 89 km away · felt by 8
29. 1.712km E of Coalinga, CAFri, Jul 16, 6:09 PM PDT · 1905 days ago · 7 km deep · 45 km away
30. 2.46km NNW of Cholame, CAMon, Jul 19, 11:16 PM PDT · 1902 days ago · 8 km deep · 81 km away
31. 2.28km NW of Cantua Creek, CATue, Jul 20, 8:40 PM PDT · 1901 days ago · 6 km deep · 52 km away
32. 2.03km E of Lemoore, CAThu, Jul 22, 8:28 AM PDT · 1900 days ago · 15 km deep · 12 km away

Before

1. 2.012km NW of Parkfield, CAFri, May 21, 11:01 PM PDT · 1961 days ago · 11 km deep · 77 km away
2. 1.923km S of South Dos Palos, CAFri, May 21, 10:47 PM PDT · 1961 days ago · 1 km deep · 88 km away
3. 2.18km E of San Ardo, CAThu, May 20, 11:03 PM PDT · 1962 days ago · 10 km deep · 97 km away
4. 2.06km SW of North Fork, CATue, May 18, 9:18 PM PDT · 1964 days ago · 33 km deep · 94 km away
5. 1.618km SSE of Kettleman City, CATue, May 18, 4:39 PM PDT · 1964 days ago · 12 km deep · 60 km away
6. 3.611km WSW of Huron, CATue, May 18, 7:44 AM PDT · 1965 days ago · 9 km deep · 42 km away · felt by 35
7. 1.94km N of Shaver Lake, CASun, May 16, 9:01 AM PDT · 1967 days ago · 32 km deep · 95 km away
8. 1.625km S of Kettleman City, CAThu, May 13, 1:29 AM PDT · 1970 days ago · 0 km deep · 67 km away
9. 1.53km ENE of Coalinga, CASat, May 8, 7:56 AM PDT · 1975 days ago · 6 km deep · 51 km away
10. 2.522km ENE of San Ardo, CAFri, May 7, 12:27 AM PDT · 1976 days ago · 6 km deep · 83 km away · felt by 3
11. 2.022km ENE of San Ardo, CAThu, May 6, 7:20 AM PDT · 1977 days ago · 6 km deep · 83 km away
12. 1.81km SW of Kettleman City, CAWed, May 5, 8:38 AM PDT · 1978 days ago · 1 km deep · 44 km away
13. 2.68km NE of Coalinga, CAWed, May 5, 7:58 AM PDT · 1978 days ago · 11 km deep · 48 km away · felt by 3
14. 2.16km SW of Woodville, CAWed, May 5, 2:23 AM PDT · 1978 days ago · 26 km deep · 65 km away
15. 1.522km SW of New Idria, CATue, May 4, 2:47 AM PDT · 1979 days ago · 6 km deep · 93 km away
16. 2.52km N of Armona, CAMon, May 3, 1:24 PM PDT · 1979 days ago · 24 km deep · 12 km away
17. 2.122km ENE of San Lucas, CAFri, Apr 30, 4:41 PM PDT · 1982 days ago · 9 km deep · 89 km away
18. 1.713km NNW of Avenal, CAWed, Apr 28, 3:31 PM PDT · 1984 days ago · 7 km deep · 45 km away
19. 2.812km NW of Parkfield, CATue, Apr 27, 10:47 AM PDT · 1986 days ago · 10 km deep · 77 km away · felt by 3
20. 1.69km NW of Avenal, CAMon, Apr 26, 12:43 PM PDT · 1986 days ago · 8 km deep · 48 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc73566490. Read Sun, Oct 4, 2026, 6:27 AM UTC.