M2.3 earthquake 24 km NE of Hydesville, California

Magnitude

2.3 (md), micro

Local time

Sun, Aug 27, 1978, 7:39 AM PDT

UTC

1978-08-27 14:39:18 UTC

Depth

26.4 km (16.4 mi), shallow

Epicenter

40.669° N, 123.859° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.4 km horizontally, 0.7 km in depth

Depth from

From location

Station coverage gap

138°

Stations used

14

• Hydesville, CaliforniaPopulation 1,237. Forecast24 kmNE
• Bayside, CaliforniaPopulation 17,132. Forecast26 kmSE
• Chico, CaliforniaPopulation 121,345. Forecast201 kmWNW
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast887 kmNNW

After

1. 1.60 km SSE of Samoa, CaliforniaSun, Aug 27, 9:05 AM PDT · 17565 days ago · 16 km deep · 31 km away
2. 1.716 km SW of Weott, CaliforniaSun, Aug 27, 5:55 PM PDT · 17565 days ago · 19 km deep · 53 km away
3. 2.00 km NNE of Garberville, CaliforniaSun, Aug 27, 6:00 PM PDT · 17565 days ago · 9 km deep · 63 km away
4. 1.72 km E of Loleta, CaliforniaMon, Aug 28, 9:10 PM PDT · 17564 days ago · 18 km deep · 29 km away
5. 2.525 km SW of Ferndale, CaliforniaTue, Aug 29, 2:49 PM PDT · 17563 days ago · 26 km deep · 60 km away
6. 2.220 km SSW of Ferndale, CaliforniaTue, Aug 29, 3:12 PM PDT · 17563 days ago · 31 km deep · 49 km away
7. 2.525 km SSW of Ferndale, CaliforniaWed, Aug 30, 9:04 PM PDT · 17562 days ago · 19 km deep · 57 km away
8. 3.1near the coast of Northern CaliforniaFri, Sep 1, 2:02 AM PDT · 17561 days ago · 21 km deep · 65 km away
9. 1.622 km WSW of Ferndale, CaliforniaFri, Sep 1, 4:49 AM PDT · 17560 days ago · 21 km deep · 58 km away
10. 2.339 km SW of Ferndale, CaliforniaFri, Sep 1, 11:03 AM PDT · 17560 days ago · 13 km deep · 73 km away
11. 1.614 km NE of Hyampom, CaliforniaSat, Sep 2, 3:26 AM PDT · 17560 days ago · 37 km deep · 45 km away
12. 1.74 km S of Ferndale, CaliforniaSat, Sep 2, 5:21 AM PDT · 17559 days ago · 25 km deep · 38 km away
13. 1.831 km WSW of Ferndale, CaliforniaSat, Sep 2, 4:55 PM PDT · 17559 days ago · 26 km deep · 67 km away
14. 2.525 km SW of Ferndale, CaliforniaSun, Sep 3, 10:02 AM PDT · 17558 days ago · 27 km deep · 60 km away
15. 2.126 km SW of Ferndale, CaliforniaSun, Sep 3, 7:48 PM PDT · 17558 days ago · 18 km deep · 62 km away
16. 2.319 km SW of Ferndale, CaliforniaSun, Sep 3, 7:52 PM PDT · 17558 days ago · 23 km deep · 53 km away
17. 1.69 km S of Ferndale, CaliforniaMon, Sep 4, 4:34 AM PDT · 17557 days ago · 19 km deep · 38 km away
18. 1.523 km W of Indianola, CaliforniaMon, Sep 4, 4:47 AM PDT · 17557 days ago · 24 km deep · 55 km away
19. 1.730 km WNW of Ferndale, CaliforniaMon, Sep 4, 3:15 PM PDT · 17557 days ago · 15 km deep · 64 km away
20. 1.630 km SW of Ferndale, CaliforniaMon, Sep 4, 8:33 PM PDT · 17557 days ago · 24 km deep · 66 km away
21. 3.525 km SSW of Ferndale, CaliforniaTue, Sep 5, 12:13 AM PDT · 17557 days ago · 19 km deep · 56 km away
22. 2.531 km WSW of Ferndale, CaliforniaTue, Sep 5, 8:53 AM PDT · 17556 days ago · 21 km deep · 67 km away
23. 3.033 km WSW of Ferndale, CaliforniaTue, Sep 5, 12:34 PM PDT · 17556 days ago · 25 km deep · 69 km away
24. 1.537 km SSW of Ferndale, CaliforniaTue, Sep 5, 5:05 PM PDT · 17556 days ago · 9 km deep · 68 km away
25. 1.526 km SSW of Ferndale, CaliforniaWed, Sep 6, 7:50 PM PDT · 17555 days ago · 30 km deep · 58 km away
26. 1.914 km WNW of Fields Landing, CaliforniaThu, Sep 7, 6:24 AM PDT · 17554 days ago · 23 km deep · 45 km away
27. 1.59 km S of Ferndale, CaliforniaThu, Sep 7, 9:45 PM PDT · 17554 days ago · 18 km deep · 41 km away
28. 1.717 km SSW of Ferndale, CaliforniaFri, Sep 8, 12:26 AM PDT · 17554 days ago · 28 km deep · 48 km away
29. 2.837 km SW of Ferndale, CaliforniaFri, Sep 8, 3:35 AM PDT · 17554 days ago · 17 km deep · 69 km away
30. 2.256 km WNW of Indianola, CaliforniaFri, Sep 8, 3:04 PM PDT · 17553 days ago · 5 km deep · 88 km away
31. 1.58 km WNW of Rio Dell, CaliforniaFri, Sep 8, 6:45 PM PDT · 17553 days ago · 5 km deep · 33 km away
32. 2.725 km ENE of Hydesville, CaliforniaSat, Sep 9, 12:51 AM PDT · 17553 days ago · 5 km deep · 3 km away
33. 3.235 km SW of Ferndale, CaliforniaSun, Sep 10, 12:39 AM PDT · 17552 days ago · 28 km deep · 67 km away
34. 3.240 km SW of Ferndale, CaliforniaSun, Sep 10, 12:43 AM PDT · 17552 days ago · 36 km deep · 73 km away
35. 3.049 km W of Indianola, CaliforniaSun, Sep 10, 5:08 AM PDT · 17551 days ago · 23 km deep · 81 km away
36. 3.231 km SW of Scotia, CaliforniaSun, Sep 10, 2:15 PM PDT · 17551 days ago · 25 km deep · 61 km away
37. 1.86 km ENE of Garberville, CaliforniaTue, Sep 12, 4:08 PM PDT · 17549 days ago · 18 km deep · 63 km away
38. 2.654 km WSW of Ferndale, CaliforniaWed, Sep 13, 12:11 AM PDT · 17549 days ago · 71 km deep · 90 km away
39. 1.67 km ESE of Hydesville, CaliforniaWed, Sep 13, 12:45 AM PDT · 17549 days ago · 19 km deep · 21 km away
40. 1.840 km WSW of Ferndale, CaliforniaWed, Sep 13, 2:45 PM PDT · 17548 days ago · 4 km deep · 76 km away
41. 3.136 km SW of Ferndale, CaliforniaWed, Sep 13, 7:19 PM PDT · 17548 days ago · 25 km deep · 68 km away
42. 1.839 km SW of Ferndale, CaliforniaThu, Sep 14, 11:59 AM PDT · 17547 days ago · 19 km deep · 73 km away
43. 2.936 km SSW of Ferndale, CaliforniaThu, Sep 14, 10:01 PM PDT · 17547 days ago · 24 km deep · 68 km away
44. 1.52 km WSW of Loleta, CaliforniaFri, Sep 15, 3:28 PM PDT · 17546 days ago · 17 km deep · 33 km away
45. 1.913 km S of Ruth, CaliforniaFri, Sep 15, 3:43 PM PDT · 17546 days ago · 22 km deep · 75 km away
46. 1.543 km SW of Ferndale, CaliforniaFri, Sep 15, 7:50 PM PDT · 17546 days ago · 16 km deep · 78 km away
47. 1.514 km WSW of Scotia, CaliforniaSat, Sep 16, 8:45 AM PDT · 17545 days ago · 21 km deep · 43 km away
48. 1.634 km W of Ferndale, CaliforniaSat, Sep 16, 1:48 PM PDT · 17545 days ago · 13 km deep · 69 km away
49. 1.626 km SW of Ferndale, CaliforniaSun, Sep 17, 8:34 AM PDT · 17544 days ago · 25 km deep · 61 km away
50. 2.138 km SW of Ferndale, CaliforniaSun, Sep 17, 12:01 PM PDT · 17544 days ago · 22 km deep · 71 km away
51. 1.616 km SSW of Ferndale, CaliforniaSun, Sep 17, 10:03 PM PDT · 17544 days ago · 20 km deep · 46 km away
52. 1.618 km SW of Scotia, CaliforniaSun, Sep 17, 10:26 PM PDT · 17544 days ago · 30 km deep · 48 km away
53. 1.65 km SSW of Alderpoint, CaliforniaMon, Sep 18, 3:07 AM PDT · 17544 days ago · 9 km deep · 63 km away
54. 2.835 km SW of Ferndale, CaliforniaMon, Sep 18, 5:01 AM PDT · 17543 days ago · 24 km deep · 68 km away
55. 1.625 km SSW of Ferndale, CaliforniaMon, Sep 18, 7:25 AM PDT · 17543 days ago · 19 km deep · 57 km away
56. 2.4near the coast of Northern CaliforniaMon, Sep 18, 8:42 PM PDT · 17543 days ago · 19 km deep · 58 km away
57. 1.527 km WSW of Ferndale, CaliforniaTue, Sep 19, 1:45 AM PDT · 17543 days ago · 18 km deep · 63 km away
58. 1.541 km SW of Ferndale, CaliforniaWed, Sep 20, 5:57 AM PDT · 17541 days ago · 20 km deep · 75 km away
59. 2.024 km W of Indianola, CaliforniaThu, Sep 21, 5:00 PM PDT · 17540 days ago · 23 km deep · 56 km away
60. 3.717 km WSW of Burnt Ranch, CaliforniaThu, Sep 21, 8:26 PM PDT · 17540 days ago · 31 km deep · 19 km away

The first 60 of 165.

Before

1. 1.854 km W of Trinidad, CaliforniaSun, Aug 27, 4:06 AM PDT · 17566 days ago · 8 km deep · 93 km away
2. 2.21 km SSW of Garberville, CaliforniaSun, Aug 27, 1:29 AM PDT · 17566 days ago · 11 km deep · 65 km away
3. 1.713 km NW of Willow Creek, CaliforniaSat, Aug 26, 10:37 AM PDT · 17566 days ago · 22 km deep · 42 km away
4. 2.526 km SW of Ferndale, CaliforniaSat, Aug 26, 10:22 AM PDT · 17566 days ago · 18 km deep · 60 km away
5. 1.813 km SE of Blue Lake, CaliforniaSat, Aug 26, 4:20 AM PDT · 17566 days ago · 22 km deep · 13 km away
6. 1.517 km SSW of Ferndale, CaliforniaFri, Aug 25, 10:27 PM PDT · 17567 days ago · 27 km deep · 50 km away
7. 2.08 km ENE of Benbow, CaliforniaFri, Aug 25, 11:44 AM PDT · 17567 days ago · 14 km deep · 66 km away
8. 1.94 km S of Phillipsville, CaliforniaFri, Aug 25, 8:15 AM PDT · 17567 days ago · 4 km deep · 56 km away
9. 1.637 km WSW of Ferndale, CaliforniaFri, Aug 25, 5:17 AM PDT · 17567 days ago · 30 km deep · 73 km away
10. 2.835 km WSW of Ferndale, CaliforniaThu, Aug 24, 10:52 PM PDT · 17568 days ago · 20 km deep · 71 km away
11. 1.94 km NE of Redway, CaliforniaThu, Aug 24, 12:50 AM PDT · 17569 days ago · 5 km deep · 59 km away
12. 1.824 km SW of Ferndale, CaliforniaThu, Aug 24, 12:34 AM PDT · 17569 days ago · 19 km deep · 58 km away
13. 1.919 km S of Ruth, CaliforniaWed, Aug 23, 8:05 AM PDT · 17569 days ago · 3 km deep · 80 km away
14. 2.233 km SSW of Ferndale, CaliforniaWed, Aug 23, 6:54 AM PDT · 17569 days ago · 19 km deep · 63 km away
15. 1.641 km W of Ferndale, CaliforniaWed, Aug 23, 1:09 AM PDT · 17570 days ago · 22 km deep · 76 km away
16. 1.723 km WSW of Ferndale, CaliforniaTue, Aug 22, 11:55 PM PDT · 17570 days ago · 29 km deep · 59 km away
17. 1.644 km W of Ferndale, CaliforniaTue, Aug 22, 1:43 AM PDT · 17571 days ago · 24 km deep · 79 km away
18. 1.717 km SE of Alderpoint, CaliforniaMon, Aug 21, 7:20 PM PDT · 17571 days ago · -1 km deep · 74 km away
19. 1.634 km SSW of Ferndale, CaliforniaMon, Aug 21, 6:52 PM PDT · 17571 days ago · 28 km deep · 66 km away
20. 1.625 km SSW of Ferndale, CaliforniaMon, Aug 21, 4:28 AM PDT · 17571 days ago · 18 km deep · 57 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc1041903. Read Tue, Sep 29, 2026, 10:42 PM UTC.