M1.6 earthquake 7 km ESE of Hydesville, California

Magnitude

1.6 (md), micro

Local time

Wed, Sep 13, 1978, 12:45 AM PDT

UTC

1978-09-13 07:45:11 UTC

Depth

19.5 km (12.1 mi), shallow

Epicenter

40.523° N, 124.019° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.5 km horizontally, 0.7 km in depth

Magnitude uncertainty

±0.07

Depth from

From location

Station coverage gap

66°

Stations used

11

• Hydesville, CaliforniaPopulation 1,237. Forecast7 kmESE
• Fortuna, CaliforniaPopulation 12,000. Forecast14 kmSE
• Chico, CaliforniaPopulation 121,345. Forecast206 kmWNW
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast882 kmNNW

After

1. 3.368 km W of Ferndale, CaliforniaWed, Sep 13, 1:30 PM PDT · 17548 days ago · 21 km deep · 89 km away
2. 1.840 km WSW of Ferndale, CaliforniaWed, Sep 13, 2:45 PM PDT · 17548 days ago · 4 km deep · 59 km away
3. 3.136 km SW of Ferndale, CaliforniaWed, Sep 13, 7:19 PM PDT · 17547 days ago · 25 km deep · 48 km away
4. 1.839 km SW of Ferndale, CaliforniaThu, Sep 14, 11:59 AM PDT · 17547 days ago · 19 km deep · 53 km away
5. 2.936 km SSW of Ferndale, CaliforniaThu, Sep 14, 10:01 PM PDT · 17546 days ago · 24 km deep · 48 km away
6. 1.52 km WSW of Loleta, CaliforniaFri, Sep 15, 3:28 PM PDT · 17545 days ago · 17 km deep · 23 km away
7. 1.913 km S of Ruth, CaliforniaFri, Sep 15, 3:43 PM PDT · 17545 days ago · 22 km deep · 74 km away
8. 1.543 km SW of Ferndale, CaliforniaFri, Sep 15, 7:50 PM PDT · 17545 days ago · 16 km deep · 59 km away
9. 1.514 km WSW of Scotia, CaliforniaSat, Sep 16, 8:45 AM PDT · 17545 days ago · 21 km deep · 22 km away
10. 1.634 km W of Ferndale, CaliforniaSat, Sep 16, 1:48 PM PDT · 17545 days ago · 13 km deep · 56 km away
11. 1.626 km SW of Ferndale, CaliforniaSun, Sep 17, 8:34 AM PDT · 17544 days ago · 25 km deep · 43 km away
12. 2.138 km SW of Ferndale, CaliforniaSun, Sep 17, 12:01 PM PDT · 17544 days ago · 22 km deep · 51 km away
13. 1.616 km SSW of Ferndale, CaliforniaSun, Sep 17, 10:03 PM PDT · 17543 days ago · 20 km deep · 26 km away
14. 1.618 km SW of Scotia, CaliforniaSun, Sep 17, 10:26 PM PDT · 17543 days ago · 30 km deep · 27 km away
15. 1.65 km SSW of Alderpoint, CaliforniaMon, Sep 18, 3:07 AM PDT · 17543 days ago · 9 km deep · 55 km away
16. 2.835 km SW of Ferndale, CaliforniaMon, Sep 18, 5:01 AM PDT · 17543 days ago · 24 km deep · 47 km away
17. 1.625 km SSW of Ferndale, CaliforniaMon, Sep 18, 7:25 AM PDT · 17543 days ago · 19 km deep · 37 km away
18. 2.4near the coast of Northern CaliforniaMon, Sep 18, 8:42 PM PDT · 17542 days ago · 19 km deep · 38 km away
19. 1.527 km WSW of Ferndale, CaliforniaTue, Sep 19, 1:45 AM PDT · 17542 days ago · 18 km deep · 45 km away
20. 1.541 km SW of Ferndale, CaliforniaWed, Sep 20, 5:57 AM PDT · 17541 days ago · 20 km deep · 55 km away
21. 2.024 km W of Indianola, CaliforniaThu, Sep 21, 5:00 PM PDT · 17539 days ago · 23 km deep · 47 km away
22. 3.717 km WSW of Burnt Ranch, CaliforniaThu, Sep 21, 8:26 PM PDT · 17539 days ago · 31 km deep · 39 km away
23. 2.015 km WSW of Burnt Ranch, CaliforniaThu, Sep 21, 8:28 PM PDT · 17539 days ago · 31 km deep · 41 km away
24. 1.615 km WSW of Scotia, CaliforniaThu, Sep 21, 10:49 PM PDT · 17539 days ago · 18 km deep · 24 km away
25. 1.913 km WSW of Burnt Ranch, CaliforniaFri, Sep 22, 5:26 AM PDT · 17539 days ago · 31 km deep · 43 km away
26. 2.36 km NNE of Myers Flat, CaliforniaSun, Sep 24, 10:07 AM PDT · 17537 days ago · 5 km deep · 28 km away
27. 2.06 km NNE of Myers Flat, CaliforniaSun, Sep 24, 4:56 PM PDT · 17536 days ago · 3 km deep · 28 km away
28. 1.66 km NE of Myers Flat, CaliforniaSun, Sep 24, 5:13 PM PDT · 17536 days ago · 1 km deep · 29 km away
29. 1.65 km NNE of Myers Flat, CaliforniaSun, Sep 24, 6:09 PM PDT · 17536 days ago · 2 km deep · 28 km away
30. 2.072 km WNW of Samoa, CaliforniaSun, Sep 24, 7:17 PM PDT · 17536 days ago · 4 km deep · 99 km away
31. 2.070 km W of Trinidad, CaliforniaMon, Sep 25, 2:10 AM PDT · 17536 days ago · 4 km deep · 99 km away
32. 2.116 km WSW of Scotia, CaliforniaMon, Sep 25, 5:26 PM PDT · 17535 days ago · 19 km deep · 24 km away
33. 2.231 km SW of Scotia, CaliforniaTue, Sep 26, 7:33 PM PDT · 17534 days ago · 10 km deep · 40 km away
34. 3.011 km ENE of Weott, CaliforniaTue, Sep 26, 8:22 PM PDT · 17534 days ago · 30 km deep · 25 km away
35. 2.322 km WSW of Weott, CaliforniaWed, Sep 27, 3:57 AM PDT · 17534 days ago · 7 km deep · 34 km away
36. 1.822 km NNW of Shelter Cove, CaliforniaWed, Sep 27, 3:58 AM PDT · 17534 days ago · 9 km deep · 36 km away
37. 1.610 km S of Ferndale, CaliforniaWed, Sep 27, 4:11 AM PDT · 17534 days ago · 18 km deep · 22 km away
38. 2.510 km S of Ferndale, CaliforniaWed, Sep 27, 4:43 AM PDT · 17534 days ago · 18 km deep · 22 km away
39. 1.524 km ENE of Hydesville, CaliforniaWed, Sep 27, 2:12 PM PDT · 17534 days ago · 7 km deep · 20 km away
40. 2.625 km SSW of Ferndale, CaliforniaWed, Sep 27, 4:19 PM PDT · 17533 days ago · 19 km deep · 37 km away
41. 1.540 km SW of Ferndale, CaliforniaFri, Sep 29, 1:51 AM PDT · 17532 days ago · 20 km deep · 54 km away
42. 1.617 km SW of Scotia, CaliforniaFri, Sep 29, 3:19 PM PDT · 17531 days ago · 22 km deep · 26 km away
43. 2.615 km WSW of Ferndale, CaliforniaSun, Oct 1, 3:27 AM PDT · 17530 days ago · 17 km deep · 34 km away
44. 1.85 km NNE of Myers Flat, CaliforniaMon, Oct 2, 2:15 AM PDT · 17529 days ago · 3 km deep · 28 km away
45. 2.621 km WSW of Weott, CaliforniaTue, Oct 3, 5:43 AM PDT · 17528 days ago · 5 km deep · 34 km away
46. 3.025 km SSW of Ferndale, CaliforniaTue, Oct 3, 5:38 PM PDT · 17527 days ago · 20 km deep · 38 km away
47. 2.832 km SW of Ferndale, CaliforniaThu, Oct 5, 5:57 AM PDT · 17526 days ago · 24 km deep · 46 km away
48. 2.29 km E of Hydesville, CaliforniaThu, Oct 5, 6:22 AM PDT · 17526 days ago · 21 km deep · 4 km away
49. 4.618 km SW of Ferndale, CaliforniaFri, Oct 6, 2:26 PM PDT · 17525 days ago · 25 km deep · 36 km away
50. 2.818 km SSW of Ferndale, CaliforniaFri, Oct 6, 2:30 PM PDT · 17525 days ago · 23 km deep · 32 km away
51. 1.511 km SW of Ferndale, CaliforniaFri, Oct 6, 2:31 PM PDT · 17525 days ago · 24 km deep · 30 km away
52. 1.815 km WSW of Ferndale, CaliforniaFri, Oct 6, 2:32 PM PDT · 17525 days ago · 24 km deep · 34 km away
53. 1.618 km SW of Ferndale, CaliforniaFri, Oct 6, 2:34 PM PDT · 17525 days ago · 21 km deep · 34 km away
54. 2.318 km WSW of Ferndale, CaliforniaFri, Oct 6, 2:36 PM PDT · 17525 days ago · 25 km deep · 37 km away
55. 2.119 km SSW of Ferndale, CaliforniaFri, Oct 6, 2:37 PM PDT · 17525 days ago · 23 km deep · 33 km away
56. 2.017 km WSW of Ferndale, CaliforniaFri, Oct 6, 2:41 PM PDT · 17525 days ago · 24 km deep · 36 km away
57. 1.525 km SW of Scotia, CaliforniaFri, Oct 6, 2:42 PM PDT · 17525 days ago · 22 km deep · 33 km away
58. 3.316 km SSW of Ferndale, CaliforniaFri, Oct 6, 2:43 PM PDT · 17525 days ago · 26 km deep · 29 km away
59. 1.715 km SW of Ferndale, CaliforniaFri, Oct 6, 2:50 PM PDT · 17524 days ago · 25 km deep · 33 km away
60. 1.929 km WSW of Ferndale, CaliforniaFri, Oct 6, 3:10 PM PDT · 17524 days ago · 25 km deep · 47 km away

The first 60 of 185.

Before

1. 2.654 km WSW of Ferndale, CaliforniaWed, Sep 13, 12:11 AM PDT · 17548 days ago · 71 km deep · 73 km away
2. 1.86 km ENE of Garberville, CaliforniaTue, Sep 12, 4:08 PM PDT · 17548 days ago · 18 km deep · 52 km away
3. 3.231 km SW of Scotia, CaliforniaSun, Sep 10, 2:15 PM PDT · 17551 days ago · 25 km deep · 40 km away
4. 2.769 km WSW of Ferndale, CaliforniaSun, Sep 10, 11:38 AM PDT · 17551 days ago · 17 km deep · 88 km away
5. 3.049 km W of Indianola, CaliforniaSun, Sep 10, 5:08 AM PDT · 17551 days ago · 23 km deep · 72 km away
6. 3.240 km SW of Ferndale, CaliforniaSun, Sep 10, 12:43 AM PDT · 17551 days ago · 36 km deep · 53 km away
7. 3.235 km SW of Ferndale, CaliforniaSun, Sep 10, 12:39 AM PDT · 17551 days ago · 28 km deep · 47 km away
8. 2.725 km ENE of Hydesville, CaliforniaSat, Sep 9, 12:51 AM PDT · 17552 days ago · 5 km deep · 21 km away
9. 1.58 km WNW of Rio Dell, CaliforniaFri, Sep 8, 6:45 PM PDT · 17552 days ago · 5 km deep · 15 km away
10. 2.256 km WNW of Indianola, CaliforniaFri, Sep 8, 3:04 PM PDT · 17552 days ago · 5 km deep · 80 km away
11. 2.837 km SW of Ferndale, CaliforniaFri, Sep 8, 3:35 AM PDT · 17553 days ago · 17 km deep · 49 km away
12. 1.717 km SSW of Ferndale, CaliforniaFri, Sep 8, 12:26 AM PDT · 17553 days ago · 28 km deep · 28 km away
13. 1.59 km S of Ferndale, CaliforniaThu, Sep 7, 9:45 PM PDT · 17553 days ago · 18 km deep · 22 km away
14. 1.672 km W of Ferndale, CaliforniaThu, Sep 7, 6:50 AM PDT · 17554 days ago · 9 km deep · 92 km away
15. 1.914 km WNW of Fields Landing, CaliforniaThu, Sep 7, 6:24 AM PDT · 17554 days ago · 23 km deep · 40 km away
16. 1.526 km SSW of Ferndale, CaliforniaWed, Sep 6, 7:50 PM PDT · 17554 days ago · 30 km deep · 38 km away
17. 1.537 km SSW of Ferndale, CaliforniaTue, Sep 5, 5:05 PM PDT · 17555 days ago · 9 km deep · 48 km away
18. 3.033 km WSW of Ferndale, CaliforniaTue, Sep 5, 12:34 PM PDT · 17556 days ago · 25 km deep · 53 km away
19. 2.531 km WSW of Ferndale, CaliforniaTue, Sep 5, 8:53 AM PDT · 17556 days ago · 21 km deep · 51 km away
20. 3.525 km SSW of Ferndale, CaliforniaTue, Sep 5, 12:13 AM PDT · 17556 days ago · 19 km deep · 36 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc1042283. Read Tue, Sep 29, 2026, 9:15 AM UTC.