M2.3 earthquake 7 km NNE of Hydesville, California

Magnitude

2.3 (Md, duration), micro

Magnitude from

Northern California Seismic System

Local time

Sat, Aug 4, 1979, 3:20 AM PDT

UTC

1979-08-04 10:20:37 UTC

Depth

17.5 km (10.9 mi), shallow

Epicenter

40.605° N, 124.050° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.3 km horizontally, 0.4 km in depth

Depth from

From location

Station coverage gap

50°

Stations used

15

• Hydesville, CaliforniaPopulation 1,237. Forecast7 kmNNE
• Fortuna, CaliforniaPopulation 12,000. Forecast9 kmE
• Chico, CaliforniaPopulation 121,345. Forecast212 kmWNW
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast891 kmNNW

After

1. 2.113 km WNW of Fields Landing, CaliforniaSat, Aug 4, 6:12 AM PDT · 17225 days ago · 24 km deep · 32 km away
2. 3.841 km SW of Ferndale, CaliforniaSat, Aug 4, 7:48 AM PDT · 17225 days ago · 26 km deep · 58 km away
3. 1.648 km SW of Ferndale, CaliforniaSat, Aug 4, 7:50 AM PDT · 17225 days ago · 21 km deep · 65 km away
4. 2.240 km SW of Ferndale, CaliforniaSat, Aug 4, 8:12 AM PDT · 17225 days ago · 27 km deep · 57 km away
5. 1.834 km SW of Ferndale, CaliforniaSat, Aug 4, 8:16 AM PDT · 17225 days ago · 28 km deep · 52 km away
6. 1.834 km SW of Ferndale, CaliforniaSat, Aug 4, 8:27 AM PDT · 17225 days ago · 23 km deep · 52 km away
7. 1.734 km WSW of Ferndale, CaliforniaSat, Aug 4, 7:00 PM PDT · 17225 days ago · 16 km deep · 52 km away
8. 1.611 km W of Mad River, CaliforniaSun, Aug 5, 1:46 AM PDT · 17224 days ago · 3 km deep · 38 km away
9. 1.829 km SW of Ferndale, CaliforniaSun, Aug 5, 8:34 AM PDT · 17224 days ago · 39 km deep · 45 km away
10. 1.93 km SSW of Willow Creek, CASun, Aug 5, 12:15 PM PDT · 17224 days ago · 21 km deep · 49 km away
11. 1.729 km WSW of Ferndale, CaliforniaSun, Aug 5, 6:18 PM PDT · 17224 days ago · 23 km deep · 47 km away
12. 2.275 km WSW of Ferndale, CaliforniaMon, Aug 6, 3:09 PM PDT · 17223 days ago · 6 km deep · 93 km away
13. 4.236 km SW of Ferndale, CaliforniaWed, Aug 8, 3:24 AM PDT · 17221 days ago · 25 km deep · 52 km away
14. 2.137 km SW of Ferndale, CaliforniaWed, Aug 8, 3:33 AM PDT · 17221 days ago · 29 km deep · 52 km away
15. 1.97 km WNW of Ruth, CaliforniaWed, Aug 8, 4:02 AM PDT · 17221 days ago · 20 km deep · 65 km away
16. 3.138 km SW of Ferndale, CaliforniaFri, Aug 10, 4:40 AM PDT · 17219 days ago · 24 km deep · 54 km away
17. 2.672 km W of Ferndale, CaliforniaFri, Aug 10, 7:47 PM PDT · 17219 days ago · 1 km deep · 90 km away
18. 1.644 km SW of Ferndale, CaliforniaFri, Aug 10, 10:41 PM PDT · 17219 days ago · 6 km deep · 61 km away
19. 1.52 km SSW of Scotia, CaliforniaSun, Aug 12, 7:09 AM PDT · 17217 days ago · 23 km deep · 16 km away
20. 1.721 km WNW of Manila, CaliforniaSun, Aug 12, 7:36 AM PDT · 17217 days ago · 9 km deep · 48 km away
21. 2.924 km W of Big Lagoon, CaliforniaSun, Aug 12, 8:12 AM PDT · 17217 days ago · 19 km deep · 69 km away
22. 1.56 km W of Mad River, CaliforniaMon, Aug 13, 2:02 AM PDT · 17216 days ago · 26 km deep · 42 km away
23. 1.69 km ESE of Hyampom, CaliforniaMon, Aug 13, 10:06 PM PDT · 17216 days ago · 44 km deep · 59 km away
24. 1.53 km ENE of Redway, CaliforniaWed, Aug 15, 3:25 AM PDT · 17214 days ago · 21 km deep · 57 km away
25. 2.048 km W of Trinidad, CaliforniaThu, Aug 16, 4:39 AM PDT · 17213 days ago · 5 km deep · 81 km away
26. 1.618 km WSW of Ferndale, CaliforniaFri, Aug 17, 1:25 AM PDT · 17212 days ago · 25 km deep · 36 km away
27. 1.6near the coast of Northern CaliforniaFri, Aug 17, 3:15 AM PDT · 17212 days ago · 15 km deep · 47 km away
28. 1.851 km WSW of Ferndale, CaliforniaFri, Aug 17, 4:29 PM PDT · 17212 days ago · 27 km deep · 69 km away
29. 1.59 km NE of Redcrest, CaliforniaFri, Aug 17, 7:05 PM PDT · 17212 days ago · 19 km deep · 21 km away
30. 1.810 km W of Shelter Cove, CaliforniaFri, Aug 17, 9:51 PM PDT · 17212 days ago · 3 km deep · 67 km away
31. 1.938 km WNW of Samoa, CaliforniaSat, Aug 18, 1:16 PM PDT · 17211 days ago · 24 km deep · 60 km away
32. 1.727 km SSW of Scotia, CaliforniaSun, Aug 19, 6:13 AM PDT · 17210 days ago · 20 km deep · 41 km away
33. 1.857 km W of Ferndale, CaliforniaSun, Aug 19, 10:41 AM PDT · 17210 days ago · 14 km deep · 75 km away
34. 1.64 km NNE of Blue Lake, CaliforniaMon, Aug 20, 10:33 AM PDT · 17209 days ago · 26 km deep · 36 km away
35. 2.414 km S of Scotia, CaliforniaTue, Aug 21, 9:45 AM PDT · 17208 days ago · 29 km deep · 28 km away
36. 1.813 km SSW of Scotia, CaliforniaTue, Aug 21, 10:02 AM PDT · 17208 days ago · 29 km deep · 28 km away
37. 1.625 km WSW of Weott, CaliforniaThu, Aug 23, 11:09 AM PDT · 17206 days ago · 7 km deep · 40 km away
38. 1.917 km W of Trinidad, CaliforniaFri, Aug 24, 12:04 AM PDT · 17206 days ago · 14 km deep · 58 km away
39. 2.09 km NE of Redcrest, CaliforniaFri, Aug 24, 12:24 AM PDT · 17206 days ago · 19 km deep · 22 km away
40. 1.775 km WSW of Ferndale, CaliforniaFri, Aug 24, 6:47 AM PDT · 17205 days ago · 4 km deep · 94 km away
41. 1.616 km ESE of Pine Hills, CaliforniaSun, Aug 26, 10:02 AM PDT · 17203 days ago · 21 km deep · 11 km away
42. 1.729 km SSW of Ferndale, CaliforniaSun, Aug 26, 10:29 AM PDT · 17203 days ago · 18 km deep · 44 km away
43. 1.86 km SSW of Scotia, CaliforniaSun, Aug 26, 3:50 PM PDT · 17203 days ago · 28 km deep · 21 km away
44. 2.136 km WSW of Ferndale, CaliforniaMon, Aug 27, 7:15 PM PDT · 17202 days ago · 18 km deep · 54 km away
45. 1.714 km WNW of Ferndale, CaliforniaWed, Aug 29, 2:59 AM PDT · 17200 days ago · 6 km deep · 32 km away
46. 1.93 km WSW of Douglas City, CaliforniaFri, Aug 31, 4:16 AM PDT · 17198 days ago · 9 km deep · 90 km away
47. 3.28 km NNE of Mad River, CaliforniaFri, Aug 31, 5:40 PM PDT · 17198 days ago · 29 km deep · 50 km away
48. 1.732 km W of Ferndale, CaliforniaSat, Sep 1, 3:29 AM PDT · 17197 days ago · 22 km deep · 51 km away
49. 1.911 km WSW of Ferndale, CaliforniaSat, Sep 1, 11:20 AM PDT · 17197 days ago · 24 km deep · 29 km away
50. 2.5near the coast of Northern CaliforniaSun, Sep 2, 2:13 AM PDT · 17196 days ago · 18 km deep · 29 km away
51. 1.924 km WSW of Ferndale, CaliforniaSun, Sep 2, 7:46 AM PDT · 17196 days ago · 23 km deep · 42 km away
52. 2.070 km W of Indianola, CaliforniaSun, Sep 2, 8:58 AM PDT · 17196 days ago · 6 km deep · 87 km away
53. 1.640 km SW of Ferndale, CaliforniaTue, Sep 4, 2:53 AM PDT · 17194 days ago · 20 km deep · 56 km away
54. 2.68 km NE of Mad River, CaliforniaWed, Sep 5, 11:59 AM PDT · 17193 days ago · 31 km deep · 52 km away
55. 1.811 km E of Blue Lake, CaliforniaThu, Sep 6, 5:56 PM PDT · 17192 days ago · -1 km deep · 36 km away
56. 2.471 km W of Ferndale, CaliforniaSun, Sep 9, 12:01 PM PDT · 17189 days ago · 2 km deep · 90 km away
57. 1.824 km WSW of Ferndale, CaliforniaSun, Sep 9, 4:50 PM PDT · 17189 days ago · 22 km deep · 42 km away
58. 1.527 km WSW of Leggett, CaliforniaSun, Sep 9, 6:44 PM PDT · 17189 days ago · 8 km deep · 94 km away
59. 1.527 km SW of Scotia, CaliforniaMon, Sep 10, 4:55 AM PDT · 17188 days ago · 6 km deep · 40 km away
60. 1.937 km SW of Ferndale, CaliforniaMon, Sep 10, 5:50 AM PDT · 17188 days ago · 21 km deep · 52 km away

The first 60 of 87.

Before

1. 1.719 km WSW of Weott, CaliforniaThu, Aug 2, 7:41 AM PDT · 17227 days ago · 5 km deep · 39 km away
2. 1.53 km S of Humboldt Hill, CaliforniaThu, Aug 2, 5:42 AM PDT · 17227 days ago · 17 km deep · 16 km away
3. 1.510 km NE of Hydesville, CaliforniaThu, Aug 2, 5:35 AM PDT · 17227 days ago · 21 km deep · 4 km away
4. 3.319 km WSW of Weott, CaliforniaThu, Aug 2, 5:18 AM PDT · 17227 days ago · 4 km deep · 40 km away
5. 2.26 km W of Rio Dell, CaliforniaWed, Aug 1, 5:53 PM PDT · 17228 days ago · 19 km deep · 16 km away
6. 3.053 km WNW of Indianola, CaliforniaWed, Aug 1, 4:33 AM PDT · 17228 days ago · -1 km deep · 71 km away
7. 4.769 km W of Indianola, CaliforniaWed, Aug 1, 3:50 AM PDT · 17228 days ago · 44 km deep · 86 km away
8. 1.67 km W of Rio Dell, CaliforniaWed, Aug 1, 1:09 AM PDT · 17228 days ago · 19 km deep · 18 km away
9. 1.913 km WNW of Hyampom, CaliforniaMon, Jul 30, 11:59 PM PDT · 17230 days ago · 5 km deep · 38 km away
10. 1.627 km SSW of Ferndale, CaliforniaMon, Jul 30, 8:31 PM PDT · 17230 days ago · 26 km deep · 41 km away
11. 2.019 km WSW of Ferndale, CaliforniaMon, Jul 30, 11:33 AM PDT · 17230 days ago · 21 km deep · 37 km away
12. 3.173 km WNW of Samoa, CaliforniaSun, Jul 29, 3:57 PM PDT · 17231 days ago · 0 km deep · 93 km away
13. 1.975 km W of Ferndale, CaliforniaSun, Jul 29, 8:48 AM PDT · 17231 days ago · 5 km deep · 94 km away
14. 1.68 km SE of Blue Lake, CaliforniaSat, Jul 28, 1:53 PM PDT · 17232 days ago · -1 km deep · 28 km away
15. 1.835 km SSW of Ferndale, CaliforniaThu, Jul 26, 11:57 PM PDT · 17234 days ago · 10 km deep · 49 km away
16. 2.115 km WSW of Leggett, CaliforniaThu, Jul 26, 11:23 PM PDT · 17234 days ago · -1 km deep · 92 km away
17. 2.43 km WSW of Indianola, CaliforniaThu, Jul 26, 10:36 AM PDT · 17234 days ago · 8 km deep · 20 km away
18. 1.73 km WSW of Indianola, CaliforniaThu, Jul 26, 10:35 AM PDT · 17234 days ago · 8 km deep · 20 km away
19. 1.75 km NNE of Redcrest, CaliforniaThu, Jul 26, 5:28 AM PDT · 17234 days ago · 1 km deep · 21 km away
20. 1.98 km E of Mad River, CaliforniaThu, Jul 26, 4:30 AM PDT · 17234 days ago · 33 km deep · 57 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc1046925. Read Thu, Oct 1, 2026, 7:08 PM UTC.