M1.8 earthquake 34km NNE of Redway, CA

Magnitude

1.8 (Md, duration), micro

Magnitude from

Northern California Seismic System

Local time

Thu, Feb 4, 2021, 2:53 PM PST

UTC

2021-02-04 22:53:53 UTC

Depth

26.8 km (16.6 mi), shallow

Epicenter

40.380° N, 123.614° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.6 km horizontally, 1.5 km in depth

Magnitude uncertainty

±0.13

Depth from

From location

Station coverage gap

68°

Stations used

21

• Miranda, CaliforniaPopulation 520. Forecast24 kmNE
• Fortuna, CaliforniaPopulation 12,000. Forecast52 kmESE
• Chico, CaliforniaPopulation 121,345. Forecast168 kmWNW
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast849 kmNNW

After

1. 2.514km WNW of Petrolia, CASun, Feb 7, 6:21 AM PST · 2065 days ago · 18 km deep · 71 km away · felt by 1
2. 2.325km WNW of Ferndale, CATue, Feb 9, 10:12 PM PST · 2062 days ago · 22 km deep · 84 km away
3. 1.916km SE of Petrolia, CAThu, Feb 11, 8:10 AM PST · 2061 days ago · 13 km deep · 48 km away
4. 2.927km W of Petrolia, CASat, Feb 13, 10:39 PM PST · 2058 days ago · 20 km deep · 85 km away
5. 1.811km NW of Covelo, CAMon, Feb 15, 3:02 AM PST · 2057 days ago · 5 km deep · 63 km away
6. 2.413km SE of Petrolia, CASat, Feb 20, 1:08 PM PST · 2052 days ago · 10 km deep · 51 km away
7. 2.514km NNW of Brooktrails, CAMon, Feb 22, 9:56 AM PST · 2050 days ago · 4 km deep · 92 km away · felt by 1
8. 1.813km SE of Petrolia, CAMon, Feb 22, 8:29 PM PST · 2050 days ago · 12 km deep · 51 km away
9. 1.87km N of Petrolia, CATue, Feb 23, 11:41 PM PST · 2048 days ago · 21 km deep · 58 km away
10. 1.65km ENE of Laytonville, CASat, Feb 27, 1:32 AM PST · 2045 days ago · 6 km deep · 76 km away
11. 2.317km NNW of Laytonville, CATue, Mar 2, 4:52 PM PST · 2042 days ago · 6 km deep · 61 km away
12. 2.120km W of Petrolia, CAWed, Mar 3, 9:21 AM PST · 2041 days ago · 21 km deep · 77 km away
13. 1.69km WSW of Rio Dell, CAWed, Mar 3, 1:42 PM PST · 2041 days ago · 22 km deep · 51 km away
14. 2.923km W of Petrolia, CAThu, Mar 4, 9:08 AM PST · 2040 days ago · 21 km deep · 80 km away · felt by 4
15. 3.030km WNW of Ferndale, CAThu, Mar 4, 2:52 PM PST · 2040 days ago · 22 km deep · 89 km away · felt by 6
16. 1.99km NNE of Brooktrails, CAFri, Mar 5, 9:15 PM PST · 2038 days ago · 9 km deep · 98 km away
17. 2.218km W of Petrolia, CASat, Mar 6, 9:02 PM PST · 2038 days ago · 19 km deep · 76 km away
18. 1.98km WSW of Petrolia, CATue, Mar 9, 8:36 PM PST · 2035 days ago · 22 km deep · 65 km away
19. 2.242km NE of Covelo, CAWed, Mar 10, 8:35 AM PST · 2034 days ago · 4 km deep · 71 km away · felt by 1
20. 2.826km W of Petrolia, CAWed, Mar 10, 1:26 PM PST · 2034 days ago · 19 km deep · 83 km away
21. 2.014km W of Petrolia, CAWed, Mar 10, 5:27 PM PST · 2034 days ago · 11 km deep · 71 km away
22. 2.735km WNW of Petrolia, CAThu, Mar 11, 4:34 PM PST · 2033 days ago · 22 km deep · 91 km away
23. 1.821km NW of Petrolia, CAFri, Mar 12, 9:25 AM PST · 2032 days ago · 18 km deep · 74 km away
24. 2.127km SE of Hayfork, CASat, Mar 13, 5:15 AM PST · 2031 days ago · 5 km deep · 53 km away
25. 1.822km SE of Covelo, CASat, Mar 13, 1:54 PM PST · 2031 days ago · 5 km deep · 94 km away
26. 2.56km W of Petrolia, CASat, Mar 13, 9:27 PM PST · 2030 days ago · 16 km deep · 63 km away · felt by 5
27. 2.31km ENE of Humboldt Hill, CASun, Mar 14, 8:17 AM PDT · 2030 days ago · 10 km deep · 61 km away · felt by 7
28. 2.24km NW of Humboldt Hill, CASun, Mar 14, 1:32 PM PDT · 2030 days ago · 10 km deep · 66 km away
29. 2.833km WNW of Petrolia, CATue, Mar 16, 3:26 PM PDT · 2028 days ago · 24 km deep · 89 km away
30. 2.06km S of Petrolia, CAThu, Mar 18, 6:28 AM PDT · 2026 days ago · 21 km deep · 58 km away
31. 2.234km E of Hydesville, CASat, Mar 20, 2:53 PM PDT · 2024 days ago · 27 km deep · 16 km away
32. 2.434km E of Hydesville, CASat, Mar 20, 2:57 PM PDT · 2024 days ago · 28 km deep · 16 km away
33. 1.610km SE of Laytonville, CAThu, Mar 25, 10:08 PM PDT · 2019 days ago · 10 km deep · 87 km away
34. 1.920km W of Petrolia, CASat, Mar 27, 1:11 PM PDT · 2017 days ago · 9 km deep · 77 km away
35. 2.19km N of Petrolia, CASun, Mar 28, 11:51 AM PDT · 2016 days ago · 27 km deep · 57 km away
36. 2.111km SSE of Redway, CAMon, Mar 29, 11:37 PM PDT · 2014 days ago · 18 km deep · 41 km away
37. 1.67km SSW of Petrolia, CAWed, Mar 31, 2:52 AM PDT · 2013 days ago · 20 km deep · 61 km away
38. 2.28km SSE of Ferndale, CAWed, Mar 31, 2:14 PM PDT · 2013 days ago · 25 km deep · 54 km away
39. 2.124km ESE of Willow Creek, CAWed, Mar 31, 5:16 PM PDT · 2013 days ago · 28 km deep · 58 km away
40. 2.827km WNW of Petrolia, CAThu, Apr 1, 8:22 AM PDT · 2012 days ago · 25 km deep · 80 km away
41. 1.614km SW of Ferndale, CAThu, Apr 1, 4:43 PM PDT · 2012 days ago · 19 km deep · 66 km away
42. 1.626km N of Laytonville, CAThu, Apr 1, 9:43 PM PDT · 2012 days ago · 7 km deep · 52 km away
43. 4.427km W of Petrolia, CAFri, Apr 2, 1:21 AM PDT · 2011 days ago · 19 km deep · 84 km away · felt by 46
44. 2.534km W of Petrolia, CAFri, Apr 2, 2:19 AM PDT · 2011 days ago · 15 km deep · 91 km away
45. 1.925km W of Petrolia, CAFri, Apr 2, 2:31 AM PDT · 2011 days ago · 18 km deep · 82 km away
46. 2.024km W of Petrolia, CAFri, Apr 2, 5:52 AM PDT · 2011 days ago · 20 km deep · 81 km away
47. 2.219km W of Petrolia, CASun, Apr 4, 12:50 AM PDT · 2009 days ago · 19 km deep · 76 km away
48. 2.019km NE of Redway, CASun, Apr 4, 4:22 AM PDT · 2009 days ago · 30 km deep · 16 km away
49. 1.827km SSE of Blue Lake, CASun, Apr 4, 1:06 PM PDT · 2009 days ago · 26 km deep · 37 km away
50. 2.227km WSW of Rancho Tehama Reserve, CASun, Apr 4, 7:10 PM PDT · 2009 days ago · 9 km deep · 89 km away
51. 2.421km W of Petrolia, CAMon, Apr 5, 4:42 AM PDT · 2008 days ago · 20 km deep · 79 km away · felt by 1
52. 3.027km W of Petrolia, CAMon, Apr 5, 1:27 PM PDT · 2008 days ago · 19 km deep · 84 km away · felt by 3

Before

1. 2.615km WSW of Petrolia, CAThu, Feb 4, 12:04 AM PST · 2068 days ago · 21 km deep · 72 km away
2. 2.518km WNW of Petrolia, CATue, Feb 2, 8:58 AM PST · 2070 days ago · 16 km deep · 74 km away
3. 2.824km W of Petrolia, CAWed, Jan 27, 12:38 PM PST · 2076 days ago · 22 km deep · 81 km away
4. 2.214km S of Rio Dell, CATue, Jan 26, 7:48 PM PST · 2077 days ago · 27 km deep · 41 km away
5. 2.28km WSW of Petrolia, CASat, Jan 23, 2:32 PM PST · 2080 days ago · 14 km deep · 65 km away
6. 1.813km NNE of Brooktrails, CASun, Jan 17, 1:37 PM PST · 2086 days ago · 9 km deep · 95 km away
7. 2.329km NNW of Hayfork, CASat, Jan 16, 1:21 PM PST · 2087 days ago · 24 km deep · 51 km away
8. 2.230km E of Rio Dell, CAFri, Jan 15, 2:55 AM PST · 2088 days ago · 29 km deep · 15 km away
9. 2.212km E of Blue Lake, CAThu, Jan 14, 12:11 PM PST · 2089 days ago · 26 km deep · 59 km away
10. 1.819km W of Petrolia, CAWed, Jan 13, 12:27 PM PST · 2090 days ago · 20 km deep · 76 km away
11. 2.416km SW of Ferndale, CAWed, Jan 13, 6:34 AM PST · 2090 days ago · 23 km deep · 68 km away
12. 2.69km WSW of Petrolia, CAWed, Jan 13, 2:00 AM PST · 2090 days ago · 20 km deep · 66 km away · felt by 1
13. 2.718km WSW of Petrolia, CATue, Jan 12, 8:12 PM PST · 2091 days ago · 17 km deep · 76 km away
14. 3.212km WSW of Petrolia, CAMon, Jan 11, 7:25 PM PST · 2092 days ago · 21 km deep · 68 km away · felt by 6
15. 1.67km ENE of Laytonville, CASun, Jan 10, 6:20 PM PST · 2093 days ago · 11 km deep · 76 km away
16. 2.012km SE of Laytonville, CASun, Jan 10, 3:31 PM PST · 2093 days ago · 7 km deep · 88 km away
17. 1.57km NE of Laytonville, CASat, Jan 9, 3:28 PM PST · 2094 days ago · 10 km deep · 75 km away
18. 2.97km WNW of Petrolia, CASat, Jan 9, 1:26 PM PST · 2094 days ago · 19 km deep · 63 km away · felt by 2
19. 2.813km W of Petrolia, CASat, Jan 9, 5:10 AM PST · 2094 days ago · 18 km deep · 70 km away · felt by 3

From the USGS Earthquake Hazards Program and its partner networks, event nc73518511. Read Sun, Oct 4, 2026, 4:41 PM UTC.