M1.6 earthquake 14km SW of Ferndale, CA

Magnitude

1.6 (Md, duration), micro

Magnitude from

Northern California Seismic System

Local time

Thu, Apr 1, 2021, 4:43 PM PDT

UTC

2021-04-01 23:43:53 UTC

Depth

18.6 km (11.6 mi), shallow

Epicenter

40.485° N, 124.376° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.5 km horizontally, 0.3 km in depth

Magnitude uncertainty

±0.17

Depth from

From location

Station coverage gap

226°, poorly surrounded by stations

Stations used

15

• Ferndale, CaliforniaPopulation 1,369. Forecast14 kmSW
• Fortuna, CaliforniaPopulation 12,000. Forecast22 kmSW
• Chico, CaliforniaPopulation 121,345. Forecast232 kmWNW
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast897 kmNW

After

1. 1.626km N of Laytonville, CAThu, Apr 1, 9:43 PM PDT · 2011 days ago · 7 km deep · 97 km away
2. 4.427km W of Petrolia, CAFri, Apr 2, 1:21 AM PDT · 2011 days ago · 19 km deep · 28 km away · felt by 46
3. 2.534km W of Petrolia, CAFri, Apr 2, 2:19 AM PDT · 2010 days ago · 15 km deep · 34 km away
4. 1.925km W of Petrolia, CAFri, Apr 2, 2:31 AM PDT · 2010 days ago · 18 km deep · 28 km away
5. 2.024km W of Petrolia, CAFri, Apr 2, 5:52 AM PDT · 2010 days ago · 20 km deep · 26 km away
6. 2.219km W of Petrolia, CASun, Apr 4, 12:50 AM PDT · 2009 days ago · 19 km deep · 23 km away
7. 2.019km NE of Redway, CASun, Apr 4, 4:22 AM PDT · 2008 days ago · 30 km deep · 65 km away
8. 1.827km SSE of Blue Lake, CASun, Apr 4, 1:06 PM PDT · 2008 days ago · 26 km deep · 51 km away
9. 2.421km W of Petrolia, CAMon, Apr 5, 4:42 AM PDT · 2007 days ago · 20 km deep · 25 km away · felt by 1
10. 3.027km W of Petrolia, CAMon, Apr 5, 1:27 PM PDT · 2007 days ago · 19 km deep · 27 km away · felt by 3
11. 2.974km W of Petrolia, CAMon, Apr 5, 5:50 PM PDT · 2007 days ago · 10 km deep · 70 km away
12. 2.518km WNW of Petrolia, CAThu, Apr 8, 2:40 PM PDT · 2004 days ago · 28 km deep · 14 km away
13. 2.514km SE of Petrolia, CAThu, Apr 8, 5:39 PM PDT · 2004 days ago · 12 km deep · 33 km away
14. 2.925km W of Petrolia, CAThu, Apr 8, 7:07 PM PDT · 2004 days ago · 13 km deep · 27 km away
15. 2.115km NW of Petrolia, CAFri, Apr 9, 3:10 AM PDT · 2003 days ago · 19 km deep · 9 km away
16. 1.929km NE of Redway, CAFri, Apr 9, 3:30 AM PDT · 2003 days ago · 4 km deep · 70 km away
17. 2.326km S of Hayfork, CAFri, Apr 9, 4:12 PM PDT · 2003 days ago · 38 km deep · 100 km away
18. 1.835km S of Willow Creek, CASat, Apr 10, 3:54 AM PDT · 2002 days ago · 24 km deep · 64 km away
19. 1.910km S of Petrolia, CASun, Apr 11, 12:59 PM PDT · 2001 days ago · 7 km deep · 29 km away
20. 2.630km WNW of Petrolia, CATue, Apr 13, 9:39 PM PDT · 1999 days ago · 25 km deep · 22 km away
21. 2.129km W of Petrolia, CAWed, Apr 14, 1:37 AM PDT · 1999 days ago · 18 km deep · 29 km away
22. 2.516km WSW of Petrolia, CAThu, Apr 15, 12:58 AM PDT · 1998 days ago · 13 km deep · 24 km away
23. 3.517km WNW of Petrolia, CAThu, Apr 15, 9:09 PM PDT · 1997 days ago · 20 km deep · 11 km away · felt by 17
24. 2.27km NNW of Hayfork, CAFri, Apr 16, 10:48 PM PDT · 1996 days ago · 32 km deep · 100 km away
25. 1.815km WSW of Petrolia, CASat, Apr 17, 1:43 AM PDT · 1995 days ago · 15 km deep · 22 km away
26. 2.638km WNW of Petrolia, CASun, Apr 18, 4:46 PM PDT · 1994 days ago · 24 km deep · 29 km away
27. 2.528km W of Petrolia, CASun, Apr 18, 10:59 PM PDT · 1994 days ago · 20 km deep · 28 km away
28. 4.020km ENE of Redway, CATue, Apr 20, 2:48 AM PDT · 1992 days ago · 34 km deep · 74 km away · felt by 26
29. 2.718km W of Petrolia, CATue, Apr 20, 7:08 AM PDT · 1992 days ago · 23 km deep · 22 km away · felt by 1
30. 2.510km WNW of Humboldt Hill, CAWed, Apr 21, 9:58 PM PDT · 1991 days ago · 25 km deep · 30 km away
31. 1.614km SW of Ferndale, CAFri, Apr 23, 7:32 PM PDT · 1989 days ago · 20 km deep · 1 km away
32. 2.07km N of Ferndale, CAFri, Apr 23, 11:14 PM PDT · 1989 days ago · 9 km deep · 19 km away
33. 2.781km W of Petrolia, CASat, Apr 24, 3:21 AM PDT · 1988 days ago · 10 km deep · 73 km away · felt by 1
34. 2.116km E of Petrolia, CASat, Apr 24, 5:32 PM PDT · 1988 days ago · 31 km deep · 28 km away
35. 1.623km W of Petrolia, CASun, Apr 25, 11:32 PM PDT · 1987 days ago · 21 km deep · 26 km away
36. 2.523km W of Petrolia, CAWed, Apr 28, 2:56 AM PDT · 1984 days ago · 22 km deep · 25 km away
37. 2.632km WNW of Ferndale, CAWed, Apr 28, 12:33 PM PDT · 1984 days ago · 23 km deep · 30 km away · felt by 2
38. 1.924km WNW of Petrolia, CAThu, Apr 29, 9:01 PM PDT · 1983 days ago · 21 km deep · 17 km away
39. 2.584km WNW of Ferndale, CASat, May 1, 11:30 PM PDT · 1981 days ago · 5 km deep · 80 km away · felt by 1
40. 1.818km WNW of Ferndale, CASun, May 2, 5:53 AM PDT · 1980 days ago · 10 km deep · 21 km away
41. 2.811km NW of Eureka, CATue, May 4, 12:37 AM PDT · 1979 days ago · 24 km deep · 42 km away · felt by 66
42. 2.31km N of Redway, CATue, May 4, 5:49 AM PDT · 1978 days ago · 26 km deep · 62 km away
43. 2.835km WNW of Petrolia, CATue, May 4, 2:38 PM PDT · 1978 days ago · 23 km deep · 27 km away
44. 2.531km WNW of Petrolia, CAWed, May 5, 2:30 PM PDT · 1977 days ago · 22 km deep · 23 km away · felt by 1
45. 1.714km WSW of Petrolia, CAThu, May 6, 3:51 AM PDT · 1976 days ago · 13 km deep · 22 km away
46. 1.813km W of Petrolia, CAFri, May 7, 2:50 AM PDT · 1975 days ago · 19 km deep · 16 km away
47. 2.219km SSE of Rio Dell, CAFri, May 7, 9:31 AM PDT · 1975 days ago · 30 km deep · 34 km away
48. 2.510km NNW of Petrolia, CASat, May 8, 1:29 AM PDT · 1975 days ago · 29 km deep · 9 km away · felt by 1
49. 2.423km W of Petrolia, CASun, May 9, 9:44 AM PDT · 1973 days ago · 21 km deep · 26 km away
50. 2.713km NW of Petrolia, CAWed, May 12, 12:11 AM PDT · 1971 days ago · 17 km deep · 11 km away · felt by 1
51. 2.326km N of Laytonville, CAWed, May 12, 12:53 AM PDT · 1971 days ago · 8 km deep · 97 km away
52. 1.926km N of Laytonville, CAWed, May 12, 1:04 AM PDT · 1971 days ago · 9 km deep · 97 km away
53. 1.812km SE of Petrolia, CAWed, May 12, 2:55 AM PDT · 1970 days ago · 11 km deep · 31 km away
54. 2.110km SSW of Ferndale, CAWed, May 12, 11:32 AM PDT · 1970 days ago · 18 km deep · 7 km away
55. 2.849km W of Ferndale, CAThu, May 13, 6:53 PM PDT · 1969 days ago · 24 km deep · 43 km away · felt by 3
56. 2.71km NNE of Humboldt Hill, CAFri, May 14, 8:02 PM PDT · 1968 days ago · 5 km deep · 32 km away · felt by 199
57. 2.98km W of Redway, CASun, May 16, 6:26 AM PDT · 1966 days ago · 19 km deep · 56 km away · felt by 4
58. 1.88km W of Redway, CASun, May 16, 8:07 AM PDT · 1966 days ago · 18 km deep · 56 km away
59. 2.88km W of Redway, CASun, May 16, 11:36 PM PDT · 1966 days ago · 18 km deep · 56 km away · felt by 5
60. 2.813km W of Petrolia, CAMon, May 17, 12:09 AM PDT · 1966 days ago · 16 km deep · 20 km away · felt by 1

The first 60 of 72.

Before

1. 2.827km WNW of Petrolia, CAThu, Apr 1, 8:22 AM PDT · 2011 days ago · 25 km deep · 16 km away
2. 2.124km ESE of Willow Creek, CAWed, Mar 31, 5:16 PM PDT · 2012 days ago · 28 km deep · 95 km away
3. 2.28km SSE of Ferndale, CAWed, Mar 31, 2:14 PM PDT · 2012 days ago · 25 km deep · 13 km away
4. 1.67km SSW of Petrolia, CAWed, Mar 31, 2:52 AM PDT · 2012 days ago · 20 km deep · 24 km away
5. 2.9104km W of Petrolia, CAWed, Mar 31, 2:26 AM PDT · 2012 days ago · 16 km deep · 95 km away
6. 4.776km W of Petrolia, CATue, Mar 30, 8:51 AM PDT · 2013 days ago · 10 km deep · 69 km away · felt by 17
7. 2.111km SSE of Redway, CAMon, Mar 29, 11:37 PM PDT · 2014 days ago · 18 km deep · 72 km away
8. 2.19km N of Petrolia, CASun, Mar 28, 11:51 AM PDT · 2015 days ago · 27 km deep · 12 km away
9. 4.188km W of Petrolia, CASat, Mar 27, 5:19 PM PDT · 2016 days ago · 10 km deep · 81 km away · felt by 4
10. 1.920km W of Petrolia, CASat, Mar 27, 1:11 PM PDT · 2016 days ago · 9 km deep · 24 km away
11. 2.434km E of Hydesville, CASat, Mar 20, 2:57 PM PDT · 2023 days ago · 28 km deep · 57 km away
12. 2.234km E of Hydesville, CASat, Mar 20, 2:53 PM PDT · 2023 days ago · 27 km deep · 57 km away
13. 2.06km S of Petrolia, CAThu, Mar 18, 6:28 AM PDT · 2025 days ago · 21 km deep · 25 km away
14. 2.833km WNW of Petrolia, CATue, Mar 16, 3:26 PM PDT · 2027 days ago · 24 km deep · 26 km away
15. 2.24km NW of Humboldt Hill, CASun, Mar 14, 1:32 PM PDT · 2029 days ago · 10 km deep · 32 km away
16. 2.31km ENE of Humboldt Hill, CASun, Mar 14, 8:17 AM PDT · 2029 days ago · 10 km deep · 32 km away · felt by 7
17. 2.786km W of Petrolia, CASat, Mar 13, 9:47 PM PST · 2030 days ago · 26 km deep · 81 km away · felt by 1
18. 2.56km W of Petrolia, CASat, Mar 13, 9:27 PM PST · 2030 days ago · 16 km deep · 17 km away · felt by 5
19. 1.821km NW of Petrolia, CAFri, Mar 12, 9:25 AM PST · 2031 days ago · 18 km deep · 10 km away
20. 2.735km WNW of Petrolia, CAThu, Mar 11, 4:34 PM PST · 2032 days ago · 22 km deep · 28 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc73544885. Read Sat, Oct 3, 2026, 8:13 PM UTC.