M1.5 earthquake 6 km NNE of Hydesville, California

Magnitude

1.5 (md), micro

Local time

Tue, Jun 21, 1983, 9:04 PM PDT

UTC

1983-06-22 04:04:26 UTC

Depth

24.8 km (15.4 mi), shallow

Epicenter

40.600° N, 124.072° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 1.1 km horizontally, 3.3 km in depth

Magnitude uncertainty

±0.01

Depth from

From location

Station coverage gap

95°

Stations used

9

• Hydesville, CaliforniaPopulation 1,237. Forecast6 kmNNE
• Fortuna, CaliforniaPopulation 12,000. Forecast7 kmE
• Chico, CaliforniaPopulation 121,345. Forecast213 kmWNW
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast892 kmNNW

After

1. 3.138 km SW of Ferndale, CaliforniaWed, Jun 22, 7:35 PM PDT · 15806 days ago · 21 km deep · 52 km away
2. 2.134 km SSW of Ferndale, CaliforniaThu, Jun 23, 4:32 AM PDT · 15805 days ago · 22 km deep · 46 km away
3. 1.65 km NNE of Redcrest, CaliforniaThu, Jun 23, 6:09 AM PDT · 15805 days ago · 22 km deep · 20 km away
4. 1.525 km SW of Ferndale, CaliforniaThu, Jun 23, 2:15 PM PDT · 15805 days ago · 19 km deep · 39 km away
5. 1.726 km SSW of Ferndale, CaliforniaFri, Jun 24, 9:27 AM PDT · 15804 days ago · 14 km deep · 38 km away
6. 3.139 km WSW of Ferndale, CaliforniaSat, Jun 25, 1:34 AM PDT · 15803 days ago · 23 km deep · 55 km away
7. 1.722 km SW of Ferndale, CaliforniaSat, Jun 25, 9:33 AM PDT · 15803 days ago · 27 km deep · 38 km away
8. 1.727 km SW of Ferndale, CaliforniaSat, Jun 25, 9:57 AM PDT · 15803 days ago · 40 km deep · 42 km away
9. 2.229 km SW of Ferndale, CaliforniaSat, Jun 25, 5:59 PM PDT · 15803 days ago · 19 km deep · 45 km away
10. 2.037 km WSW of Ferndale, CaliforniaSat, Jun 25, 9:59 PM PDT · 15803 days ago · 16 km deep · 53 km away
11. 1.627 km SW of Scotia, CaliforniaSun, Jun 26, 12:57 AM PDT · 15802 days ago · 12 km deep · 38 km away
12. 1.69 km NE of Phillipsville, CaliforniaTue, Jun 28, 1:07 AM PDT · 15800 days ago · 30 km deep · 47 km away
13. 2.019 km SW of Ferndale, CaliforniaTue, Jun 28, 8:54 PM PDT · 15800 days ago · 24 km deep · 34 km away
14. 1.828 km SW of Ferndale, CaliforniaTue, Jun 28, 8:58 PM PDT · 15800 days ago · 26 km deep · 43 km away
15. 1.97 km SE of Leggett, CaliforniaWed, Jun 29, 9:16 AM PDT · 15799 days ago · 2 km deep · 94 km away
16. 1.79 km SE of Leggett, CaliforniaWed, Jun 29, 11:52 AM PDT · 15799 days ago · 8 km deep · 95 km away
17. 1.827 km WSW of Leggett, CaliforniaWed, Jun 29, 11:21 PM PDT · 15799 days ago · -1 km deep · 92 km away
18. 2.346 km WSW of Ferndale, CaliforniaFri, Jul 1, 11:24 PM PDT · 15797 days ago · 19 km deep · 62 km away
19. 1.65 km SE of Ferndale, CaliforniaSat, Jul 2, 5:28 PM PDT · 15796 days ago · 12 km deep · 14 km away
20. 2.230 km WSW of Ferndale, CaliforniaSat, Jul 2, 11:24 PM PDT · 15796 days ago · 26 km deep · 47 km away
21. 2.13 km NE of Redway, CaliforniaSun, Jul 3, 1:30 AM PDT · 15795 days ago · 20 km deep · 57 km away
22. 2.924 km SW of Ferndale, CaliforniaSun, Jul 3, 8:23 AM PDT · 15795 days ago · 23 km deep · 39 km away
23. 1.817 km W of Samoa, CaliforniaMon, Jul 4, 2:50 PM PDT · 15794 days ago · -1 km deep · 36 km away
24. 2.013 km W of Junction City, CaliforniaTue, Jul 5, 4:28 AM PDT · 15793 days ago · 6 km deep · 74 km away
25. 2.010 km NE of Hydesville, CaliforniaTue, Jul 5, 5:24 PM PDT · 15793 days ago · 18 km deep · 5 km away
26. 3.020 km SW of Scotia, CaliforniaTue, Jul 5, 9:03 PM PDT · 15793 days ago · 25 km deep · 32 km away
27. 1.613 km W of Indianola, CaliforniaWed, Jul 6, 3:52 PM PDT · 15792 days ago · 21 km deep · 28 km away
28. 1.950 km SW of Ferndale, CaliforniaWed, Jul 6, 6:36 PM PDT · 15792 days ago · 23 km deep · 63 km away
29. 1.72 km NE of Myers Flat, CaliforniaWed, Jul 6, 9:48 PM PDT · 15792 days ago · 22 km deep · 40 km away
30. 1.825 km S of Shelter Cove, CaliforniaThu, Jul 7, 4:51 AM PDT · 15791 days ago · 2 km deep · 89 km away
31. 1.626 km SSW of Ferndale, CaliforniaThu, Jul 7, 9:53 PM PDT · 15791 days ago · 19 km deep · 38 km away
32. 1.61 km SSW of Fields Landing, CaliforniaFri, Jul 8, 3:44 AM PDT · 15790 days ago · 9 km deep · 18 km away
33. 2.61 km WSW of Fields Landing, CaliforniaFri, Jul 8, 4:46 AM PDT · 15790 days ago · 10 km deep · 19 km away
34. 1.91 km SSW of Fields Landing, CaliforniaFri, Jul 8, 5:14 AM PDT · 15790 days ago · 10 km deep · 18 km away
35. 1.80 km SSW of Fields Landing, CaliforniaFri, Jul 8, 5:42 AM PDT · 15790 days ago · 9 km deep · 18 km away
36. 2.11 km SW of Fields Landing, CaliforniaFri, Jul 8, 6:05 AM PDT · 15790 days ago · 9 km deep · 18 km away
37. 1.92 km S of Mad River, CaliforniaSat, Jul 9, 11:43 AM PDT · 15789 days ago · 22 km deep · 52 km away
38. 1.9near the coast of Northern CaliforniaSun, Jul 10, 7:20 AM PDT · 15788 days ago · 19 km deep · 44 km away
39. 1.820 km SE of Indianola, CaliforniaSun, Jul 10, 12:43 PM PDT · 15788 days ago · 22 km deep · 20 km away
40. 2.911 km W of Orick, CaliforniaTue, Jul 12, 7:41 AM PDT · 15786 days ago · 10 km deep · 75 km away
41. 2.75 km W of Big Lagoon, CaliforniaTue, Jul 12, 8:09 AM PDT · 15786 days ago · 10 km deep · 64 km away
42. 2.59 km WSW of Ferndale, CaliforniaTue, Jul 12, 10:55 AM PDT · 15786 days ago · 25 km deep · 26 km away
43. 1.916 km SW of Scotia, CaliforniaTue, Jul 12, 3:09 PM PDT · 15786 days ago · 25 km deep · 29 km away
44. 2.130 km WSW of Leggett, CaliforniaTue, Jul 12, 3:38 PM PDT · 15786 days ago · 0 km deep · 94 km away
45. 2.19 km N of Mad River, CaliforniaTue, Jul 12, 4:10 PM PDT · 15786 days ago · 4 km deep · 49 km away
46. 2.17 km WNW of Big Lagoon, CaliforniaTue, Jul 12, 9:43 PM PDT · 15786 days ago · 11 km deep · 66 km away
47. 2.59 km NW of Big Lagoon, CaliforniaWed, Jul 13, 9:41 AM PDT · 15785 days ago · 10 km deep · 70 km away
48. 2.830 km WNW of Fields Landing, CaliforniaWed, Jul 13, 11:10 PM PDT · 15785 days ago · 24 km deep · 47 km away
49. 2.652 km W of Indianola, CaliforniaThu, Jul 14, 7:07 PM PDT · 15784 days ago · 27 km deep · 68 km away
50. 2.03 km N of Mad River, CaliforniaThu, Jul 14, 8:10 PM PDT · 15784 days ago · -1 km deep · 49 km away
51. 2.17 km SW of Benbow, CaliforniaFri, Jul 15, 12:01 AM PDT · 15783 days ago · -1 km deep · 67 km away
52. 3.53 km SSE of Benbow, CaliforniaFri, Jul 15, 12:16 AM PDT · 15783 days ago · 15 km deep · 68 km away
53. 2.63 km SE of Benbow, CaliforniaFri, Jul 15, 12:18 AM PDT · 15783 days ago · 15 km deep · 68 km away
54. 1.618 km WSW of Scotia, CaliforniaFri, Jul 15, 1:31 AM PDT · 15783 days ago · 20 km deep · 28 km away
55. 2.127 km SW of Ferndale, CaliforniaFri, Jul 15, 9:14 AM PDT · 15783 days ago · 27 km deep · 43 km away
56. 1.76 km E of Redcrest, CaliforniaSat, Jul 16, 5:38 AM PDT · 15782 days ago · 23 km deep · 28 km away
57. 1.73 km W of Rio Dell, CaliforniaSat, Jul 16, 5:56 AM PDT · 15782 days ago · 20 km deep · 13 km away
58. 1.636 km SSW of Ferndale, CaliforniaSat, Jul 16, 3:15 PM PDT · 15782 days ago · 4 km deep · 49 km away
59. 2.715 km NNW of Hayfork, CaliforniaSat, Jul 16, 7:22 PM PDT · 15782 days ago · 21 km deep · 69 km away
60. 2.04 km SE of Benbow, CaliforniaSat, Jul 16, 8:27 PM PDT · 15782 days ago · 15 km deep · 68 km away

The first 60 of 144.

Before

1. 1.722 km SW of Ferndale, CaliforniaTue, Jun 21, 12:11 PM PDT · 15807 days ago · 27 km deep · 38 km away
2. 2.151 km W of Ferndale, CaliforniaTue, Jun 21, 6:47 AM PDT · 15807 days ago · 20 km deep · 67 km away
3. 1.613 km SE of Leggett, CaliforniaTue, Jun 21, 3:06 AM PDT · 15807 days ago · 0 km deep · 100 km away
4. 1.625 km SSW of Ferndale, CaliforniaMon, Jun 20, 6:15 PM PDT · 15808 days ago · 19 km deep · 37 km away
5. 1.7near the coast of Northern CaliforniaMon, Jun 20, 9:44 AM PDT · 15808 days ago · 18 km deep · 25 km away
6. 3.232 km SSW of Ferndale, CaliforniaSun, Jun 19, 3:08 PM PDT · 15809 days ago · 21 km deep · 44 km away
7. 3.140 km W of Ferndale, CaliforniaSun, Jun 19, 1:01 AM PDT · 15809 days ago · 20 km deep · 57 km away
8. 2.06 km ENE of Hydesville, CaliforniaSat, Jun 18, 6:32 AM PDT · 15810 days ago · 22 km deep · 5 km away
9. 1.53 km WSW of Rio Dell, CaliforniaSat, Jun 18, 12:59 AM PDT · 15810 days ago · 11 km deep · 14 km away
10. 1.930 km WSW of Ferndale, CaliforniaSat, Jun 18, 12:31 AM PDT · 15810 days ago · 22 km deep · 46 km away
11. 2.665 km W of Ferndale, CaliforniaFri, Jun 17, 3:24 PM PDT · 15811 days ago · 5 km deep · 82 km away
12. 1.514 km SSW of Ferndale, CaliforniaFri, Jun 17, 6:43 AM PDT · 15811 days ago · 20 km deep · 28 km away
13. 1.720 km W of Hyampom, CaliforniaFri, Jun 17, 12:28 AM PDT · 15811 days ago · 24 km deep · 32 km away
14. 3.237 km SW of Ferndale, CaliforniaThu, Jun 16, 12:50 PM PDT · 15812 days ago · 22 km deep · 51 km away
15. 2.028 km WSW of Ferndale, CaliforniaTue, Jun 14, 10:26 AM PDT · 15814 days ago · 26 km deep · 44 km away
16. 2.225 km W of Ferndale, CaliforniaSun, Jun 12, 4:03 PM PDT · 15816 days ago · 20 km deep · 42 km away
17. 2.828 km WSW of Ferndale, CaliforniaSat, Jun 11, 11:08 AM PDT · 15817 days ago · 26 km deep · 44 km away
18. 1.614 km SW of Mad River, CaliforniaThu, Jun 9, 7:05 PM PDT · 15819 days ago · 21 km deep · 48 km away
19. 1.617 km SW of Ferndale, CaliforniaMon, Jun 6, 9:44 PM PDT · 15822 days ago · 23 km deep · 32 km away
20. 3.031 km SW of Ferndale, CaliforniaSat, Jun 4, 4:34 PM PDT · 15824 days ago · 12 km deep · 46 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc1097336. Read Wed, Sep 30, 2026, 6:14 PM UTC.