M2.4 earthquake 34km E of Hydesville, CA

Magnitude

2.4 (Md, duration), micro

Magnitude from

Northern California Seismic System

Local time

Sat, Mar 20, 2021, 2:57 PM PDT

UTC

2021-03-20 21:57:42 UTC

Depth

28.3 km (17.6 mi), shallow

Epicenter

40.512° N, 123.703° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.6 km horizontally, 0.7 km in depth

Magnitude uncertainty

±0.11

Depth from

From location

Station coverage gap

69°

Stations used

22

• Miranda, CaliforniaPopulation 520. Forecast32 kmNNE
• Fortuna, CaliforniaPopulation 12,000. Forecast40 kmESE
• Chico, CaliforniaPopulation 121,345. Forecast181 kmWNW
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast865 kmNNW

After

1. 1.920km W of Petrolia, CASat, Mar 27, 1:11 PM PDT · 2016 days ago · 9 km deep · 73 km away
2. 2.19km N of Petrolia, CASun, Mar 28, 11:51 AM PDT · 2015 days ago · 27 km deep · 51 km away
3. 2.111km SSE of Redway, CAMon, Mar 29, 11:37 PM PDT · 2014 days ago · 18 km deep · 54 km away
4. 1.67km SSW of Petrolia, CAWed, Mar 31, 2:52 AM PDT · 2012 days ago · 20 km deep · 59 km away
5. 2.822km NW of Weitchpec, CAWed, Mar 31, 5:14 AM PDT · 2012 days ago · 33 km deep · 94 km away · felt by 1
6. 2.28km SSE of Ferndale, CAWed, Mar 31, 2:14 PM PDT · 2012 days ago · 25 km deep · 44 km away
7. 2.124km ESE of Willow Creek, CAWed, Mar 31, 5:16 PM PDT · 2012 days ago · 28 km deep · 49 km away
8. 2.827km WNW of Petrolia, CAThu, Apr 1, 8:22 AM PDT · 2011 days ago · 25 km deep · 73 km away
9. 1.614km SW of Ferndale, CAThu, Apr 1, 4:43 PM PDT · 2011 days ago · 19 km deep · 57 km away
10. 1.626km N of Laytonville, CAThu, Apr 1, 9:43 PM PDT · 2011 days ago · 7 km deep · 68 km away
11. 4.427km W of Petrolia, CAFri, Apr 2, 1:21 AM PDT · 2010 days ago · 19 km deep · 79 km away · felt by 46
12. 2.534km W of Petrolia, CAFri, Apr 2, 2:19 AM PDT · 2010 days ago · 15 km deep · 87 km away
13. 1.925km W of Petrolia, CAFri, Apr 2, 2:31 AM PDT · 2010 days ago · 18 km deep · 78 km away
14. 2.024km W of Petrolia, CAFri, Apr 2, 5:52 AM PDT · 2010 days ago · 20 km deep · 77 km away
15. 2.219km W of Petrolia, CASun, Apr 4, 12:50 AM PDT · 2008 days ago · 19 km deep · 72 km away
16. 2.019km NE of Redway, CASun, Apr 4, 4:22 AM PDT · 2008 days ago · 30 km deep · 29 km away
17. 1.827km SSE of Blue Lake, CASun, Apr 4, 1:06 PM PDT · 2008 days ago · 26 km deep · 21 km away
18. 2.421km W of Petrolia, CAMon, Apr 5, 4:42 AM PDT · 2007 days ago · 20 km deep · 74 km away · felt by 1
19. 3.027km W of Petrolia, CAMon, Apr 5, 1:27 PM PDT · 2007 days ago · 19 km deep · 80 km away · felt by 3
20. 2.518km WNW of Petrolia, CAThu, Apr 8, 2:40 PM PDT · 2004 days ago · 28 km deep · 67 km away
21. 2.514km SE of Petrolia, CAThu, Apr 8, 5:39 PM PDT · 2004 days ago · 12 km deep · 49 km away
22. 2.925km W of Petrolia, CAThu, Apr 8, 7:07 PM PDT · 2004 days ago · 13 km deep · 78 km away
23. 2.115km NW of Petrolia, CAFri, Apr 9, 3:10 AM PDT · 2003 days ago · 19 km deep · 62 km away
24. 1.929km NE of Redway, CAFri, Apr 9, 3:30 AM PDT · 2003 days ago · 4 km deep · 24 km away
25. 2.326km S of Hayfork, CAFri, Apr 9, 4:12 PM PDT · 2003 days ago · 38 km deep · 46 km away
26. 1.835km S of Willow Creek, CASat, Apr 10, 3:54 AM PDT · 2002 days ago · 24 km deep · 14 km away
27. 1.910km S of Petrolia, CASun, Apr 11, 12:59 PM PDT · 2001 days ago · 7 km deep · 57 km away
28. 2.630km WNW of Petrolia, CATue, Apr 13, 9:39 PM PDT · 1999 days ago · 25 km deep · 78 km away
29. 2.129km W of Petrolia, CAWed, Apr 14, 1:37 AM PDT · 1998 days ago · 18 km deep · 82 km away
30. 2.516km WSW of Petrolia, CAThu, Apr 15, 12:58 AM PDT · 1997 days ago · 13 km deep · 69 km away
31. 3.517km WNW of Petrolia, CAThu, Apr 15, 9:09 PM PDT · 1997 days ago · 20 km deep · 65 km away · felt by 17
32. 2.27km NNW of Hayfork, CAFri, Apr 16, 10:48 PM PDT · 1996 days ago · 32 km deep · 43 km away
33. 1.815km WSW of Petrolia, CASat, Apr 17, 1:43 AM PDT · 1995 days ago · 15 km deep · 68 km away
34. 2.741km NNE of Covelo, CASat, Apr 17, 9:29 AM PDT · 1995 days ago · 45 km deep · 71 km away
35. 2.940km NNE of Covelo, CASat, Apr 17, 12:35 PM PDT · 1995 days ago · 46 km deep · 71 km away · felt by 1
36. 2.338km NNE of Covelo, CASat, Apr 17, 1:39 PM PDT · 1995 days ago · 40 km deep · 72 km away
37. 1.54km ESE of Laytonville, CASat, Apr 17, 5:48 PM PDT · 1995 days ago · 9 km deep · 96 km away
38. 2.638km WNW of Petrolia, CASun, Apr 18, 4:46 PM PDT · 1994 days ago · 24 km deep · 86 km away
39. 2.528km W of Petrolia, CASun, Apr 18, 10:59 PM PDT · 1994 days ago · 20 km deep · 81 km away
40. 4.020km ENE of Redway, CATue, Apr 20, 2:48 AM PDT · 1992 days ago · 34 km deep · 37 km away · felt by 26
41. 2.718km W of Petrolia, CATue, Apr 20, 7:08 AM PDT · 1992 days ago · 23 km deep · 71 km away · felt by 1
42. 2.141km NE of Covelo, CATue, Apr 20, 10:15 AM PDT · 1992 days ago · 9 km deep · 83 km away
43. 2.510km WNW of Humboldt Hill, CAWed, Apr 21, 9:58 PM PDT · 1991 days ago · 25 km deep · 57 km away
44. 1.614km SW of Ferndale, CAFri, Apr 23, 7:32 PM PDT · 1989 days ago · 20 km deep · 57 km away
45. 2.07km N of Ferndale, CAFri, Apr 23, 11:14 PM PDT · 1989 days ago · 9 km deep · 50 km away
46. 2.116km E of Petrolia, CASat, Apr 24, 5:32 PM PDT · 1988 days ago · 31 km deep · 39 km away
47. 1.64km ENE of Laytonville, CASun, Apr 25, 12:18 AM PDT · 1988 days ago · 10 km deep · 93 km away
48. 1.623km W of Petrolia, CASun, Apr 25, 11:32 PM PDT · 1987 days ago · 21 km deep · 76 km away
49. 2.34km NE of Laytonville, CAMon, Apr 26, 4:54 AM PDT · 1986 days ago · 7 km deep · 92 km away · felt by 2
50. 2.63km ENE of Laytonville, CAMon, Apr 26, 5:18 AM PDT · 1986 days ago · 8 km deep · 93 km away · felt by 2
51. 2.523km W of Petrolia, CAWed, Apr 28, 2:56 AM PDT · 1984 days ago · 22 km deep · 76 km away
52. 2.632km WNW of Ferndale, CAWed, Apr 28, 12:33 PM PDT · 1984 days ago · 23 km deep · 79 km away · felt by 2
53. 1.924km WNW of Petrolia, CAThu, Apr 29, 9:01 PM PDT · 1983 days ago · 21 km deep · 73 km away
54. 1.818km WNW of Ferndale, CASun, May 2, 5:53 AM PDT · 1980 days ago · 10 km deep · 65 km away
55. 2.17km ENE of Laytonville, CAMon, May 3, 2:19 AM PDT · 1979 days ago · 10 km deep · 93 km away
56. 2.811km NW of Eureka, CATue, May 4, 12:37 AM PDT · 1979 days ago · 24 km deep · 61 km away · felt by 66
57. 2.31km N of Redway, CATue, May 4, 5:49 AM PDT · 1978 days ago · 26 km deep · 44 km away
58. 2.835km WNW of Petrolia, CATue, May 4, 2:38 PM PDT · 1978 days ago · 23 km deep · 83 km away
59. 2.531km WNW of Petrolia, CAWed, May 5, 2:30 PM PDT · 1977 days ago · 22 km deep · 79 km away · felt by 1
60. 1.714km WSW of Petrolia, CAThu, May 6, 3:51 AM PDT · 1976 days ago · 13 km deep · 67 km away

The first 60 of 83.

Before

1. 2.234km E of Hydesville, CASat, Mar 20, 2:53 PM PDT · 2023 days ago · 27 km deep · 0 km away
2. 2.06km S of Petrolia, CAThu, Mar 18, 6:28 AM PDT · 2025 days ago · 21 km deep · 56 km away
3. 2.833km WNW of Petrolia, CATue, Mar 16, 3:26 PM PDT · 2027 days ago · 24 km deep · 82 km away
4. 2.24km NW of Humboldt Hill, CASun, Mar 14, 1:32 PM PDT · 2029 days ago · 10 km deep · 51 km away
5. 2.31km ENE of Humboldt Hill, CASun, Mar 14, 8:17 AM PDT · 2029 days ago · 10 km deep · 47 km away · felt by 7
6. 2.56km W of Petrolia, CASat, Mar 13, 9:27 PM PST · 2030 days ago · 16 km deep · 59 km away · felt by 5
7. 2.127km SE of Hayfork, CASat, Mar 13, 5:15 AM PST · 2030 days ago · 5 km deep · 63 km away
8. 1.821km NW of Petrolia, CAFri, Mar 12, 9:25 AM PST · 2031 days ago · 18 km deep · 66 km away
9. 2.735km WNW of Petrolia, CAThu, Mar 11, 4:34 PM PST · 2032 days ago · 22 km deep · 84 km away
10. 2.014km W of Petrolia, CAWed, Mar 10, 5:27 PM PST · 2033 days ago · 11 km deep · 67 km away
11. 2.826km W of Petrolia, CAWed, Mar 10, 1:26 PM PST · 2033 days ago · 19 km deep · 78 km away
12. 2.242km NE of Covelo, CAWed, Mar 10, 8:35 AM PST · 2033 days ago · 4 km deep · 86 km away · felt by 1
13. 1.98km WSW of Petrolia, CATue, Mar 9, 8:36 PM PST · 2034 days ago · 22 km deep · 62 km away
14. 2.218km W of Petrolia, CASat, Mar 6, 9:02 PM PST · 2037 days ago · 19 km deep · 72 km away
15. 3.030km WNW of Ferndale, CAThu, Mar 4, 2:52 PM PST · 2039 days ago · 22 km deep · 77 km away · felt by 6
16. 2.923km W of Petrolia, CAThu, Mar 4, 9:08 AM PST · 2039 days ago · 21 km deep · 76 km away · felt by 4
17. 1.69km WSW of Rio Dell, CAWed, Mar 3, 1:42 PM PST · 2040 days ago · 22 km deep · 43 km away
18. 2.120km W of Petrolia, CAWed, Mar 3, 9:21 AM PST · 2040 days ago · 21 km deep · 73 km away
19. 2.317km NNW of Laytonville, CATue, Mar 2, 4:52 PM PST · 2041 days ago · 6 km deep · 77 km away
20. 1.65km ENE of Laytonville, CASat, Feb 27, 1:32 AM PST · 2044 days ago · 6 km deep · 92 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc73539780. Read Sat, Oct 3, 2026, 7:11 PM UTC.