M1.5 earthquake 13 km SW of Ferndale, California

Magnitude

1.5 (md), micro

Local time

Mon, Oct 17, 1977, 5:05 PM PDT

UTC

1977-10-18 00:05:52 UTC

Depth

20.9 km (13.0 mi), shallow

Epicenter

40.490° N, 124.372° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 1.3 km horizontally, 0.4 km in depth

Magnitude uncertainty

±0.03

Depth from

From location

Station coverage gap

266°, poorly surrounded by stations

Stations used

8

• Ferndale, CaliforniaPopulation 1,369. Forecast13 kmSW
• Fortuna, CaliforniaPopulation 12,000. Forecast22 kmWSW
• Chico, CaliforniaPopulation 121,345. Forecast232 kmWNW
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast897 kmNW

After

1. 1.616 km SSW of Ferndale, CaliforniaWed, Oct 19, 12:43 PM PDT · 17870 days ago · 18 km deep · 6 km away
2. 2.119 km WNW of Mad River, CaliforniaWed, Oct 19, 11:00 PM PDT · 17870 days ago · 23 km deep · 57 km away
3. 3.237 km SW of Ferndale, CaliforniaFri, Oct 21, 12:00 AM PDT · 17869 days ago · 23 km deep · 24 km away
4. 1.69 km S of Ferndale, CaliforniaSat, Oct 22, 10:56 AM PDT · 17867 days ago · -1 km deep · 8 km away
5. 2.410 km N of Redcrest, CaliforniaSun, Oct 23, 1:19 PM PDT · 17866 days ago · 20 km deep · 34 km away
6. 2.028 km SW of Ferndale, CaliforniaWed, Oct 26, 9:51 PM PDT · 17863 days ago · 24 km deep · 16 km away
7. 2.329 km SW of Ferndale, CaliforniaThu, Oct 27, 12:46 AM PDT · 17863 days ago · 19 km deep · 16 km away
8. 3.175 km W of Ferndale, CaliforniaThu, Oct 27, 6:03 AM PDT · 17863 days ago · 4 km deep · 66 km away
9. 2.338 km SW of Ferndale, CaliforniaThu, Oct 27, 3:06 PM PDT · 17862 days ago · 19 km deep · 25 km away
10. 1.930 km WSW of Ferndale, CaliforniaFri, Oct 28, 12:53 PM PDT · 17861 days ago · 21 km deep · 21 km away
11. 3.388 km WNW of Samoa, CaliforniaFri, Oct 28, 11:41 PM PDT · 17861 days ago · 5 km deep · 91 km away
12. 1.612 km WNW of Ruth, CaliforniaSat, Oct 29, 7:44 PM PDT · 17860 days ago · 25 km deep · 80 km away
13. 2.077 km W of Samoa, CaliforniaMon, Oct 31, 10:02 AM PST · 17858 days ago · 6 km deep · 80 km away
14. 3.124 km SW of Scotia, CaliforniaWed, Nov 2, 6:55 PM PST · 17856 days ago · 22 km deep · 16 km away
15. 2.921 km WSW of Weott, CaliforniaThu, Nov 3, 4:59 AM PST · 17856 days ago · 5 km deep · 33 km away
16. 3.710 km SW of Scotia, CaliforniaThu, Nov 3, 6:55 PM PST · 17855 days ago · 4 km deep · 16 km away
17. 1.72 km NNE of Samoa, CaliforniaSun, Nov 6, 1:25 PM PST · 17852 days ago · 23 km deep · 42 km away
18. 1.622 km WNW of Hyampom, CaliforniaMon, Nov 7, 11:37 PM PST · 17851 days ago · 22 km deep · 61 km away
19. 3.065 km WSW of Ferndale, CaliforniaWed, Nov 9, 5:27 PM PST · 17849 days ago · 8 km deep · 54 km away
20. 2.827 km WSW of Ferndale, CaliforniaThu, Nov 10, 8:42 AM PST · 17848 days ago · 23 km deep · 15 km away
21. 1.928 km WSW of Ferndale, CaliforniaThu, Nov 10, 8:51 AM PST · 17848 days ago · 23 km deep · 16 km away
22. 2.867 km WSW of Ferndale, CaliforniaThu, Nov 10, 10:11 PM PST · 17848 days ago · 5 km deep · 57 km away
23. 1.868 km WSW of Ferndale, CaliforniaFri, Nov 11, 9:34 AM PST · 17847 days ago · 7 km deep · 58 km away
24. 1.911 km NE of Myers Flat, CaliforniaSat, Nov 12, 12:03 AM PST · 17847 days ago · 21 km deep · 54 km away
25. 2.07 km N of Redcrest, CaliforniaSat, Nov 12, 9:49 PM PST · 17846 days ago · 27 km deep · 35 km away
26. 1.912 km SE of Indianola, CaliforniaSun, Nov 13, 9:26 AM PST · 17845 days ago · 21 km deep · 41 km away
27. 1.66 km SSE of Burnt Ranch, CaliforniaSun, Nov 13, 4:25 PM PST · 17845 days ago · 24 km deep · 84 km away
28. 2.514 km E of Hydesville, CaliforniaSun, Nov 13, 11:41 PM PST · 17845 days ago · 24 km deep · 39 km away
29. 1.628 km WSW of Ferndale, CaliforniaMon, Nov 14, 1:13 AM PST · 17845 days ago · 24 km deep · 16 km away
30. 2.418 km WNW of Indianola, CaliforniaMon, Nov 14, 9:57 AM PST · 17844 days ago · 23 km deep · 28 km away
31. 1.531 km WNW of Samoa, CaliforniaFri, Nov 18, 2:26 AM PST · 17841 days ago · 20 km deep · 51 km away
32. 1.815 km W of Ferndale, CaliforniaSat, Nov 19, 3:52 PM PST · 17839 days ago · 20 km deep · 10 km away
33. 2.733 km W of Ferndale, CaliforniaWed, Nov 23, 12:11 PM PST · 17835 days ago · 20 km deep · 25 km away
34. 1.78 km S of Ferndale, CaliforniaThu, Nov 24, 1:03 AM PST · 17835 days ago · 19 km deep · 9 km away
35. 1.625 km SW of Ferndale, CaliforniaThu, Nov 24, 2:26 AM PST · 17835 days ago · 26 km deep · 12 km away
36. 1.644 km WNW of Indianola, CaliforniaThu, Nov 24, 2:50 AM PST · 17835 days ago · 21 km deep · 49 km away
37. 2.427 km WNW of Ferndale, CaliforniaFri, Nov 25, 8:56 PM PST · 17833 days ago · 20 km deep · 27 km away
38. 2.880 km W of Ferndale, CaliforniaSat, Nov 26, 12:12 AM PST · 17833 days ago · 5 km deep · 72 km away
39. 2.329 km SW of Scotia, CaliforniaSat, Nov 26, 10:46 AM PST · 17832 days ago · 21 km deep · 21 km away
40. 1.635 km WSW of Ferndale, CaliforniaSun, Nov 27, 9:57 AM PST · 17831 days ago · 23 km deep · 24 km away
41. 2.530 km WSW of Ferndale, CaliforniaSun, Nov 27, 10:19 AM PST · 17831 days ago · 23 km deep · 19 km away
42. 1.78 km S of Scotia, CaliforniaSun, Nov 27, 7:41 PM PST · 17831 days ago · 8 km deep · 25 km away
43. 1.521 km SW of Ferndale, CaliforniaFri, Dec 2, 2:01 AM PST · 17827 days ago · 24 km deep · 9 km away
44. 2.027 km SW of Scotia, CaliforniaFri, Dec 2, 6:49 AM PST · 17827 days ago · 7 km deep · 23 km away
45. 2.67 km NE of Westhaven-Moonstone, CaliforniaFri, Dec 2, 11:26 AM PST · 17826 days ago · 18 km deep · 72 km away
46. 2.78 km WSW of Rio Dell, CaliforniaFri, Dec 2, 3:49 PM PST · 17826 days ago · 20 km deep · 14 km away
47. 2.118 km SW of Scotia, CaliforniaFri, Dec 2, 5:53 PM PST · 17826 days ago · 4 km deep · 17 km away
48. 2.36 km SSE of Mad River, CaliforniaSat, Dec 3, 5:25 AM PST · 17826 days ago · -1 km deep · 75 km away
49. 1.824 km SW of Scotia, CaliforniaSat, Dec 3, 8:07 AM PST · 17826 days ago · 6 km deep · 18 km away
50. 3.237 km W of Big Lagoon, CaliforniaSun, Dec 4, 9:45 PM PST · 17824 days ago · 16 km deep · 79 km away
51. 2.618 km N of Shelter Cove, CaliforniaMon, Dec 5, 1:14 PM PST · 17823 days ago · 8 km deep · 40 km away
52. 1.856 km WNW of Samoa, CaliforniaSun, Dec 11, 3:28 AM PST · 17818 days ago · 2 km deep · 64 km away
53. 1.837 km W of Ferndale, CaliforniaSun, Dec 11, 1:00 PM PST · 17817 days ago · 33 km deep · 28 km away
54. 2.016 km S of Ferndale, CaliforniaThu, Dec 15, 6:10 PM PST · 17813 days ago · 20 km deep · 10 km away
55. 2.418 km WSW of Weott, CaliforniaFri, Dec 16, 10:51 AM PST · 17812 days ago · 3 km deep · 36 km away

Before

1. 1.60 km W of Redway, CaliforniaSun, Oct 16, 5:03 PM PDT · 17873 days ago · 21 km deep · 61 km away
2. 1.64 km N of Fortuna, CaliforniaSun, Oct 16, 7:47 AM PDT · 17874 days ago · 21 km deep · 25 km away
3. 3.033 km SW of Ferndale, CaliforniaSat, Oct 15, 8:42 AM PDT · 17875 days ago · 24 km deep · 20 km away
4. 2.033 km SW of Ferndale, CaliforniaFri, Oct 14, 4:54 PM PDT · 17875 days ago · 28 km deep · 20 km away
5. 2.42 km WSW of Loleta, CaliforniaFri, Oct 14, 6:22 AM PDT · 17876 days ago · 19 km deep · 19 km away
6. 1.930 km W of Indianola, CaliforniaFri, Oct 14, 2:28 AM PDT · 17876 days ago · 23 km deep · 30 km away
7. 2.3near the coast of Northern CaliforniaThu, Oct 13, 9:27 AM PDT · 17877 days ago · 21 km deep · 29 km away
8. 2.48 km E of Benbow, CaliforniaMon, Oct 10, 6:26 PM PDT · 17879 days ago · 16 km deep · 75 km away
9. 3.574 km W of Ferndale, CaliforniaSun, Oct 9, 9:04 PM PDT · 17880 days ago · 6 km deep · 65 km away
10. 1.527 km SW of Ferndale, CaliforniaSun, Oct 9, 8:48 PM PDT · 17880 days ago · 23 km deep · 14 km away
11. 2.142 km W of Ferndale, CaliforniaSun, Oct 9, 3:35 AM PDT · 17881 days ago · 25 km deep · 35 km away
12. 2.028 km W of Ferndale, CaliforniaSat, Oct 8, 12:20 PM PDT · 17881 days ago · 18 km deep · 22 km away
13. 1.517 km WSW of Scotia, CaliforniaSat, Oct 8, 10:25 AM PDT · 17881 days ago · 20 km deep · 13 km away
14. 2.316 km S of Ferndale, CaliforniaFri, Oct 7, 6:49 AM PDT · 17883 days ago · 19 km deep · 10 km away
15. 1.616 km WSW of Ferndale, CaliforniaThu, Oct 6, 5:47 AM PDT · 17884 days ago · 22 km deep · 6 km away
16. 1.99 km NW of Fields Landing, CaliforniaTue, Oct 4, 12:08 AM PDT · 17886 days ago · 23 km deep · 33 km away
17. 1.812 km WNW of Fields Landing, CaliforniaSun, Oct 2, 11:34 PM PDT · 17887 days ago · 24 km deep · 29 km away
18. 1.912 km WNW of Fields Landing, CaliforniaSun, Oct 2, 10:47 PM PDT · 17887 days ago · 25 km deep · 29 km away
19. 1.527 km SW of Scotia, CaliforniaSun, Oct 2, 6:08 PM PDT · 17887 days ago · 3 km deep · 25 km away
20. 1.522 km WSW of Weott, CaliforniaSun, Oct 2, 9:43 AM PDT · 17887 days ago · 6 km deep · 34 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc1037310. Read Wed, Sep 23, 2026, 4:01 AM UTC.