M3.6 earthquake 10 km NE of Hydesville, California

Magnitude

3.6 (ml), minor

Local time

Fri, Apr 1, 1977, 10:09 PM PST

UTC

1977-04-02 06:09:11 UTC

Depth

22.3 km (13.9 mi), shallow

Epicenter

40.610° N, 124.000° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.4 km horizontally, 0.6 km in depth

Depth from

From location

Station coverage gap

53°

Stations used

15

• Hydesville, CaliforniaPopulation 1,237. Forecast11 kmNE
• Fortuna, CaliforniaPopulation 12,000. Forecast13 kmE
• Chico, CaliforniaPopulation 121,345. Forecast208 kmWNW
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast889 kmNNW

After

1. 2.711 km NE of Hydesville, CaliforniaSat, Apr 2, 2:13 AM PST · 18070 days ago · 22 km deep · 1 km away
2. 3.136 km WNW of Big Lagoon, CaliforniaSat, Apr 2, 6:37 PM PST · 18070 days ago · 17 km deep · 84 km away
3. 3.011 km NE of Hydesville, CaliforniaSun, Apr 3, 1:37 AM PST · 18070 days ago · 21 km deep · 0 km away
4. 1.919 km W of Ferndale, CaliforniaSun, Apr 3, 1:21 PM PST · 18069 days ago · 20 km deep · 42 km away
5. 3.023 km WSW of Ferndale, CaliforniaMon, Apr 4, 12:25 AM PST · 18069 days ago · 22 km deep · 45 km away
6. 1.53 km SW of Mad River, CaliforniaMon, Apr 4, 1:57 AM PST · 18069 days ago · 28 km deep · 44 km away
7. 1.74 km WSW of Scotia, CaliforniaMon, Apr 4, 7:39 AM PST · 18068 days ago · 23 km deep · 20 km away
8. 2.627 km SSW of Ferndale, CaliforniaMon, Apr 4, 5:46 PM PST · 18068 days ago · 27 km deep · 45 km away
9. 1.517 km SSE of Blue Lake, CaliforniaMon, Apr 4, 10:02 PM PST · 18068 days ago · 24 km deep · 18 km away
10. 1.526 km SW of Ferndale, CaliforniaWed, Apr 6, 10:25 AM PST · 18066 days ago · 19 km deep · 48 km away
11. 2.89 km ESE of Douglas City, CaliforniaThu, Apr 7, 12:23 AM PST · 18066 days ago · 4 km deep · 97 km away
12. 2.68 km N of Hayfork, CaliforniaThu, Apr 7, 12:27 AM PST · 18066 days ago · 10 km deep · 68 km away
13. 1.845 km WNW of Indianola, CaliforniaThu, Apr 7, 3:10 AM PST · 18065 days ago · 20 km deep · 66 km away
14. 1.77 km W of Rio Dell, CaliforniaThu, Apr 7, 11:43 AM PST · 18065 days ago · 18 km deep · 21 km away
15. 1.832 km WSW of Ferndale, CaliforniaThu, Apr 7, 9:13 PM PST · 18065 days ago · 21 km deep · 54 km away
16. 3.19 km SSW of Junction City, CaliforniaFri, Apr 8, 4:15 PM PST · 18064 days ago · 52 km deep · 77 km away
17. 2.412 km N of Hayfork, CaliforniaFri, Apr 8, 4:27 PM PST · 18064 days ago · 2 km deep · 69 km away
18. 1.510 km NNE of Hayfork, CaliforniaSat, Apr 9, 2:45 AM PST · 18063 days ago · 5 km deep · 72 km away
19. 2.040 km WSW of Ferndale, CaliforniaSat, Apr 9, 10:24 AM PST · 18063 days ago · 17 km deep · 62 km away
20. 3.039 km WSW of Ferndale, CaliforniaSun, Apr 10, 2:23 AM PST · 18062 days ago · 19 km deep · 62 km away
21. 4.149 km WSW of Ferndale, CaliforniaMon, Apr 11, 3:48 PM PST · 18061 days ago · 28 km deep · 72 km away
22. 3.550 km WSW of Ferndale, CaliforniaMon, Apr 11, 3:53 PM PST · 18061 days ago · 25 km deep · 73 km away
23. 1.715 km NE of Myers Flat, CaliforniaWed, Apr 13, 11:00 AM PST · 18059 days ago · 27 km deep · 36 km away
24. 1.614 km ENE of Hyampom, CaliforniaWed, Apr 13, 12:04 PM PST · 18059 days ago · 4 km deep · 60 km away
25. 2.34 km ESE of Pine Hills, CaliforniaThu, Apr 14, 3:39 PM PST · 18058 days ago · 24 km deep · 15 km away
26. 2.730 km SW of Ferndale, CaliforniaFri, Apr 15, 1:01 AM PST · 18058 days ago · 28 km deep · 51 km away
27. 2.528 km SSW of Ferndale, CaliforniaFri, Apr 15, 6:20 PM PST · 18057 days ago · 19 km deep · 44 km away
28. 1.84 km SW of Indianola, CaliforniaFri, Apr 15, 11:13 PM PST · 18057 days ago · 23 km deep · 24 km away
29. 2.312 km SE of Alderpoint, CaliforniaSat, Apr 16, 3:35 AM PST · 18056 days ago · 26 km deep · 70 km away
30. 2.031 km SW of Ferndale, CaliforniaSat, Apr 16, 3:13 PM PST · 18056 days ago · 23 km deep · 51 km away
31. 2.53 km SW of Garberville, CaliforniaSat, Apr 16, 8:12 PM PST · 18056 days ago · 14 km deep · 61 km away
32. 2.527 km SSW of Ferndale, CaliforniaSun, Apr 17, 1:25 AM PST · 18056 days ago · 25 km deep · 45 km away
33. 2.310 km S of Ferndale, CaliforniaThu, Apr 21, 2:04 AM PST · 18052 days ago · 19 km deep · 28 km away
34. 2.2near the coast of Northern CaliforniaThu, Apr 21, 4:39 PM PST · 18051 days ago · 21 km deep · 41 km away
35. 1.940 km WNW of Indianola, CaliforniaThu, Apr 21, 7:52 PM PST · 18051 days ago · 21 km deep · 62 km away
36. 1.86 km WNW of Ferndale, CaliforniaSun, Apr 24, 9:38 PM PDT · 18048 days ago · 26 km deep · 28 km away
37. 1.79 km W of Indianola, CaliforniaMon, Apr 25, 1:35 AM PDT · 18048 days ago · 22 km deep · 30 km away
38. 3.227 km SSW of Ferndale, CaliforniaMon, Apr 25, 9:30 PM PDT · 18047 days ago · 20 km deep · 43 km away
39. 2.740 km SSW of Ferndale, CaliforniaThu, Apr 28, 10:17 PM PDT · 18044 days ago · 13 km deep · 58 km away
40. 1.832 km WSW of Ferndale, CaliforniaThu, Apr 28, 10:42 PM PDT · 18044 days ago · 25 km deep · 55 km away
41. 2.314 km SW of Mad River, CaliforniaSat, Apr 30, 4:52 AM PDT · 18042 days ago · 11 km deep · 41 km away
42. 3.021 km WSW of Weott, CaliforniaSat, Apr 30, 6:11 AM PDT · 18042 days ago · 7 km deep · 45 km away
43. 2.523 km SSW of Ferndale, CaliforniaMon, May 2, 2:17 AM PDT · 18041 days ago · 24 km deep · 42 km away
44. 2.252 km W of Ferndale, CaliforniaWed, May 4, 10:35 AM PDT · 18038 days ago · 2 km deep · 75 km away
45. 1.839 km WSW of Ferndale, CaliforniaThu, May 5, 5:17 AM PDT · 18037 days ago · 5 km deep · 62 km away
46. 1.744 km WSW of Ferndale, CaliforniaFri, May 6, 8:46 PM PDT · 18036 days ago · 23 km deep · 67 km away
47. 1.651 km W of Ferndale, CaliforniaSat, May 7, 7:32 PM PDT · 18035 days ago · 22 km deep · 73 km away
48. 2.631 km WSW of Ferndale, CaliforniaSun, May 8, 2:36 PM PDT · 18034 days ago · 22 km deep · 54 km away
49. 2.434 km W of Ferndale, CaliforniaMon, May 9, 2:31 PM PDT · 18033 days ago · 21 km deep · 57 km away
50. 3.959 km W of Big Lagoon, CaliforniaMon, May 9, 5:09 PM PDT · 18033 days ago · 0 km deep · 93 km away
51. 1.945 km WSW of Ferndale, CaliforniaMon, May 9, 6:55 PM PDT · 18033 days ago · 17 km deep · 67 km away
52. 2.03 km W of Hydesville, CaliforniaMon, May 9, 9:51 PM PDT · 18033 days ago · 5 km deep · 14 km away
53. 1.85 km W of Willow Creek, CaliforniaWed, May 11, 1:43 AM PDT · 18032 days ago · 32 km deep · 44 km away
54. 2.816 km SW of Ferndale, CaliforniaWed, May 11, 2:31 PM PDT · 18031 days ago · 24 km deep · 38 km away
55. 2.816 km WSW of Ferndale, CaliforniaWed, May 11, 2:36 PM PDT · 18031 days ago · 24 km deep · 38 km away
56. 3.033 km SW of Ferndale, CaliforniaThu, May 12, 12:38 AM PDT · 18031 days ago · 24 km deep · 52 km away
57. 2.59 km S of Hyampom, CaliforniaThu, May 12, 9:27 AM PDT · 18030 days ago · 0 km deep · 45 km away
58. 3.117 km WSW of Scotia, CaliforniaFri, May 13, 9:50 AM PDT · 18029 days ago · 20 km deep · 33 km away
59. 2.316 km WSW of Scotia, CaliforniaFri, May 13, 7:37 PM PDT · 18029 days ago · 19 km deep · 32 km away
60. 2.468 km W of Trinidad, CaliforniaSun, May 15, 5:53 PM PDT · 18027 days ago · 5 km deep · 99 km away

The first 60 of 82.

Before

1. 2.116 km W of Samoa, CaliforniaThu, Mar 31, 7:22 PM PST · 18072 days ago · 22 km deep · 40 km away
2. 2.419 km SW of Ferndale, CaliforniaWed, Mar 30, 8:19 PM PST · 18073 days ago · 23 km deep · 41 km away
3. 1.611 km NNW of Mad River, CaliforniaTue, Mar 29, 10:41 PM PST · 18074 days ago · 2 km deep · 37 km away
4. 2.511 km W of Samoa, CaliforniaTue, Mar 29, 5:52 PM PST · 18074 days ago · 25 km deep · 36 km away
5. 2.617 km E of Big Lagoon, CaliforniaTue, Mar 29, 4:48 AM PST · 18074 days ago · 21 km deep · 61 km away
6. 1.711 km NNW of Mad River, CaliforniaSun, Mar 27, 3:33 PM PST · 18076 days ago · 2 km deep · 37 km away
7. 2.050 km W of Indianola, CaliforniaSun, Mar 27, 3:03 PM PST · 18076 days ago · 25 km deep · 71 km away
8. 1.512 km N of Junction City, CaliforniaSun, Mar 27, 8:51 AM PST · 18076 days ago · 0 km deep · 83 km away
9. 2.145 km WSW of Ferndale, CaliforniaFri, Mar 25, 5:23 AM PST · 18078 days ago · 14 km deep · 67 km away
10. 2.615 km W of Junction City, CaliforniaThu, Mar 24, 12:20 PM PST · 18079 days ago · 13 km deep · 66 km away
11. 2.132 km W of Ferndale, CaliforniaWed, Mar 23, 2:16 PM PST · 18080 days ago · 31 km deep · 55 km away
12. 2.214 km E of Mad River, CaliforniaWed, Mar 23, 1:00 AM PST · 18081 days ago · 28 km deep · 58 km away
13. 1.58 km SSW of Hayfork, CaliforniaTue, Mar 22, 11:05 PM PST · 18081 days ago · 3 km deep · 66 km away
14. 2.668 km W of Ferndale, CaliforniaTue, Mar 22, 6:30 AM PST · 18081 days ago · 5 km deep · 91 km away
15. 1.58 km NNW of Redcrest, CaliforniaMon, Mar 21, 3:02 PM PST · 18082 days ago · 28 km deep · 16 km away
16. 2.410 km WNW of Ferndale, CaliforniaMon, Mar 21, 1:45 AM PST · 18083 days ago · 24 km deep · 32 km away
17. 2.623 km SW of Ferndale, CaliforniaSun, Mar 20, 6:20 PM PST · 18083 days ago · 23 km deep · 45 km away
18. 1.618 km W of Ferndale, CaliforniaSat, Mar 19, 4:37 AM PST · 18084 days ago · 21 km deep · 41 km away
19. 2.214 km SSW of Mad River, CaliforniaThu, Mar 17, 1:22 PM PST · 18086 days ago · 28 km deep · 48 km away
20. 2.054 km W of Ferndale, CaliforniaWed, Mar 16, 11:19 PM PST · 18087 days ago · 42 km deep · 76 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc1034635 (also filed as usp0000n7y). Read Tue, Sep 22, 2026, 9:39 PM UTC.