M1.5 earthquake 16 km NE of Hydesville, California

Magnitude

1.5 (Md, duration), micro

Magnitude from

Northern California Seismic System

Local time

Sun, Apr 1, 1979, 3:21 AM PST

UTC

1979-04-01 11:21:33 UTC

Depth

22.4 km (13.9 mi), shallow

Epicenter

40.663° N, 123.975° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.6 km horizontally, 1.2 km in depth

Magnitude uncertainty

±0.18

Depth from

From location

Station coverage gap

75°

Stations used

8

• Hydesville, CaliforniaPopulation 1,237. Forecast16 kmNE
• Fortuna, CaliforniaPopulation 12,000. Forecast17 kmENE
• Chico, CaliforniaPopulation 121,345. Forecast209 kmWNW
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast892 kmNNW

After

1. 2.053 km WNW of Samoa, CaliforniaSun, Apr 1, 5:42 AM PST · 17350 days ago · 12 km deep · 76 km away
2. 1.955 km WNW of Samoa, CaliforniaSun, Apr 1, 5:53 AM PST · 17350 days ago · 9 km deep · 78 km away
3. 1.819 km SSW of Ferndale, CaliforniaSun, Apr 1, 6:45 AM PST · 17350 days ago · 26 km deep · 41 km away
4. 1.726 km SSW of Scotia, CaliforniaSun, Apr 1, 8:01 AM PST · 17350 days ago · 4 km deep · 49 km away
5. 2.02 km ENE of Manila, CaliforniaSun, Apr 1, 10:04 AM PST · 17350 days ago · 24 km deep · 25 km away
6. 1.750 km WNW of Samoa, CaliforniaSun, Apr 1, 10:55 AM PST · 17350 days ago · 5 km deep · 72 km away
7. 1.913 km SSW of Scotia, CaliforniaSun, Apr 1, 6:29 PM PST · 17349 days ago · 19 km deep · 36 km away
8. 1.829 km SW of Ferndale, CaliforniaMon, Apr 2, 9:23 AM PST · 17349 days ago · 29 km deep · 55 km away
9. 1.525 km SSW of Ferndale, CaliforniaWed, Apr 4, 10:13 AM PST · 17347 days ago · 18 km deep · 49 km away
10. 1.916 km NNE of Redcrest, CaliforniaWed, Apr 4, 8:45 PM PST · 17346 days ago · 6 km deep · 17 km away
11. 2.14 km WSW of Burnt Ranch, CaliforniaThu, Apr 5, 1:03 AM PST · 17346 days ago · 34 km deep · 41 km away
12. 1.811 km WNW of Samoa, CaliforniaThu, Apr 5, 5:30 AM PST · 17346 days ago · 22 km deep · 36 km away
13. 1.87 km ENE of Leggett, CaliforniaThu, Apr 5, 6:31 AM PST · 17346 days ago · 8 km deep · 92 km away
14. 1.68 km SSW of Benbow, CaliforniaThu, Apr 5, 7:52 AM PST · 17346 days ago · 15 km deep · 74 km away
15. 1.944 km SW of Ferndale, CaliforniaThu, Apr 5, 11:49 AM PST · 17346 days ago · 18 km deep · 70 km away
16. 2.39 km S of Ferndale, CaliforniaThu, Apr 5, 1:09 PM PST · 17346 days ago · 18 km deep · 32 km away
17. 2.618 km SW of Scotia, CaliforniaThu, Apr 5, 5:25 PM PST · 17346 days ago · 28 km deep · 41 km away
18. 1.718 km SW of Scotia, CaliforniaThu, Apr 5, 5:27 PM PST · 17346 days ago · 29 km deep · 41 km away
19. 5.371 km W of Trinidad, CaliforniaFri, Apr 6, 10:18 PM PST · 17344 days ago · 4 km deep · 100 km away
20. 2.62 km N of Hyampom, CaliforniaSat, Apr 7, 8:00 AM PST · 17344 days ago · 31 km deep · 44 km away
21. 1.511 km SSW of Ferndale, CaliforniaSat, Apr 7, 3:42 PM PST · 17344 days ago · 21 km deep · 35 km away
22. 1.97 km NE of Phillipsville, CaliforniaSat, Apr 7, 8:26 PM PST · 17343 days ago · -1 km deep · 50 km away
23. 1.66 km NE of Phillipsville, CaliforniaSat, Apr 7, 8:28 PM PST · 17343 days ago · -1 km deep · 50 km away
24. 2.26 km ENE of Mad River, CaliforniaMon, Apr 9, 9:23 AM PST · 17342 days ago · 30 km deep · 50 km away
25. 2.04 km NE of Hydesville, CaliforniaMon, Apr 9, 5:11 PM PST · 17342 days ago · 21 km deep · 13 km away
26. 1.737 km WSW of Ferndale, CaliforniaTue, Apr 10, 2:30 AM PST · 17341 days ago · 12 km deep · 64 km away
27. 1.93 km WSW of Redcrest, CaliforniaTue, Apr 10, 4:58 AM PST · 17341 days ago · 23 km deep · 30 km away
28. 1.66 km N of Mad River, CaliforniaTue, Apr 10, 10:09 AM PST · 17341 days ago · -1 km deep · 44 km away
29. 1.953 km W of Indianola, CaliforniaTue, Apr 10, 11:41 AM PST · 17341 days ago · 0 km deep · 75 km away
30. 2.17 km ENE of Phillipsville, CaliforniaThu, Apr 12, 3:48 AM PST · 17339 days ago · 24 km deep · 53 km away
31. 2.225 km SSW of Ferndale, CaliforniaFri, Apr 13, 2:40 AM PST · 17338 days ago · 19 km deep · 49 km away
32. 1.76 km NNW of Willow Creek, CaliforniaFri, Apr 13, 10:14 PM PST · 17337 days ago · 22 km deep · 44 km away
33. 2.332 km SW of Ferndale, CaliforniaSat, Apr 14, 4:54 AM PST · 17337 days ago · 19 km deep · 59 km away
34. 1.78 km W of Rio Dell, CaliforniaSat, Apr 14, 1:23 PM PST · 17337 days ago · 19 km deep · 27 km away
35. 1.738 km SW of Ferndale, CaliforniaSat, Apr 14, 3:50 PM PST · 17337 days ago · 21 km deep · 63 km away
36. 1.826 km SSW of Scotia, CaliforniaSun, Apr 15, 4:28 AM PST · 17336 days ago · 18 km deep · 49 km away
37. 2.25 km ESE of Burnt Ranch, CaliforniaSun, Apr 15, 8:41 AM PST · 17336 days ago · 22 km deep · 49 km away
38. 2.447 km WSW of Ferndale, CaliforniaSun, Apr 15, 12:52 PM PST · 17336 days ago · 23 km deep · 73 km away
39. 2.027 km SW of Ferndale, CaliforniaSun, Apr 15, 8:20 PM PST · 17335 days ago · 18 km deep · 52 km away
40. 1.718 km SW of Weott, CaliforniaMon, Apr 16, 4:07 AM PST · 17335 days ago · 13 km deep · 51 km away
41. 2.324 km SW of Ferndale, CaliforniaMon, Apr 16, 4:19 AM PST · 17335 days ago · 20 km deep · 49 km away
42. 2.027 km SW of Ferndale, CaliforniaMon, Apr 16, 9:20 AM PST · 17335 days ago · 19 km deep · 52 km away
43. 2.653 km WSW of Ferndale, CaliforniaWed, Apr 18, 12:08 AM PST · 17333 days ago · 15 km deep · 79 km away
44. 1.610 km WSW of Redcrest, CaliforniaWed, Apr 18, 5:11 PM PST · 17333 days ago · 29 km deep · 34 km away
45. 2.239 km SW of Ferndale, CaliforniaWed, Apr 18, 5:55 PM PST · 17332 days ago · 18 km deep · 64 km away
46. 1.515 km NE of Blue Lake, CaliforniaWed, Apr 18, 9:51 PM PST · 17332 days ago · 22 km deep · 35 km away
47. 1.837 km SW of Ferndale, CaliforniaThu, Apr 19, 1:04 AM PST · 17332 days ago · 22 km deep · 61 km away
48. 1.817 km SE of Alderpoint, CaliforniaThu, Apr 19, 3:20 AM PST · 17332 days ago · 12 km deep · 79 km away
49. 2.511 km WSW of Ferndale, CaliforniaThu, Apr 19, 5:59 PM PST · 17331 days ago · 16 km deep · 38 km away
50. 2.211 km N of Willow Creek, CaliforniaFri, Apr 20, 6:26 AM PST · 17331 days ago · 7 km deep · 51 km away
51. 1.511 km NW of Hayfork, CaliforniaFri, Apr 20, 7:54 AM PST · 17331 days ago · 4 km deep · 60 km away
52. 1.731 km WSW of Ferndale, CaliforniaFri, Apr 20, 10:05 AM PST · 17331 days ago · 19 km deep · 58 km away
53. 1.912 km W of Samoa, CaliforniaFri, Apr 20, 11:37 PM PST · 17330 days ago · 22 km deep · 34 km away
54. 2.324 km SSW of Ferndale, CaliforniaSat, Apr 21, 9:00 AM PST · 17330 days ago · 19 km deep · 48 km away
55. 2.613 km WNW of Ferndale, CaliforniaSat, Apr 21, 9:49 AM PST · 17330 days ago · 21 km deep · 37 km away
56. 2.013 km WSW of Burnt Ranch, CaliforniaSun, Apr 22, 4:35 AM PST · 17329 days ago · 34 km deep · 31 km away
57. 1.66 km WSW of Scotia, CaliforniaSun, Apr 22, 9:05 AM PST · 17329 days ago · 27 km deep · 28 km away
58. 1.828 km SW of Ferndale, CaliforniaTue, Apr 24, 2:48 AM PST · 17327 days ago · 23 km deep · 53 km away
59. 3.073 km W of Ferndale, CaliforniaTue, Apr 24, 5:58 AM PST · 17327 days ago · 2 km deep · 99 km away
60. 1.614 km SSW of Ferndale, CaliforniaTue, Apr 24, 7:57 PM PST · 17326 days ago · 26 km deep · 36 km away

The first 60 of 147.

Before

1. 1.734 km SW of Ferndale, CaliforniaSat, Mar 31, 9:03 PM PST · 17350 days ago · 15 km deep · 59 km away
2. 1.71 km W of Benbow, CaliforniaSat, Mar 31, 6:03 AM PST · 17351 days ago · 19 km deep · 68 km away
3. 2.111 km WNW of Manila, CaliforniaFri, Mar 30, 4:36 AM PST · 17352 days ago · 21 km deep · 36 km away
4. 1.518 km WNW of Indianola, CaliforniaThu, Mar 29, 11:51 PM PST · 17352 days ago · 25 km deep · 41 km away
5. 1.71 km E of Willow Creek, CaliforniaMon, Mar 26, 5:48 AM PST · 17356 days ago · 25 km deep · 44 km away
6. 1.926 km SSW of Ferndale, CaliforniaMon, Mar 26, 3:30 AM PST · 17356 days ago · 17 km deep · 50 km away
7. 3.441 km W of Samoa, CaliforniaSun, Mar 25, 6:05 AM PST · 17357 days ago · 19 km deep · 63 km away
8. 1.91 km E of Pine Hills, CaliforniaSat, Mar 24, 1:26 PM PST · 17358 days ago · 19 km deep · 15 km away
9. 1.637 km SSW of Ferndale, CaliforniaSat, Mar 24, 9:11 AM PST · 17358 days ago · 18 km deep · 59 km away
10. 2.04 km SE of Benbow, CaliforniaSat, Mar 24, 9:07 AM PST · 17358 days ago · 16 km deep · 72 km away
11. 3.035 km SSW of Ferndale, CaliforniaFri, Mar 23, 6:25 PM PST · 17358 days ago · 21 km deep · 58 km away
12. 1.83 km E of Rio Dell, CaliforniaFri, Mar 23, 5:23 PM PST · 17359 days ago · 22 km deep · 19 km away
13. 1.725 km SSW of Ferndale, CaliforniaFri, Mar 23, 9:41 AM PST · 17359 days ago · 19 km deep · 49 km away
14. 2.237 km SSW of Ferndale, CaliforniaThu, Mar 22, 10:03 PM PST · 17359 days ago · 5 km deep · 60 km away
15. 3.145 km SW of Ferndale, CaliforniaThu, Mar 22, 3:44 AM PST · 17360 days ago · 19 km deep · 71 km away
16. 2.145 km SW of Ferndale, CaliforniaThu, Mar 22, 3:28 AM PST · 17360 days ago · 19 km deep · 71 km away
17. 1.732 km WSW of Ferndale, CaliforniaWed, Mar 21, 3:45 PM PST · 17361 days ago · 21 km deep · 59 km away
18. 1.731 km SW of Ferndale, CaliforniaWed, Mar 21, 2:09 PM PST · 17361 days ago · 20 km deep · 57 km away
19. 1.8Northern CaliforniaWed, Mar 21, 2:13 AM PST · 17361 days ago · 31 km deep · 42 km away
20. 2.035 km SSW of Ferndale, CaliforniaTue, Mar 20, 6:37 AM PST · 17362 days ago · 21 km deep · 57 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc1045220. Read Thu, Oct 1, 2026, 1:02 PM UTC.