M1.5 earthquake 30 km SSW of Ferndale, California

Magnitude

1.5 (Md, duration), micro

Magnitude from

Northern California Seismic System

Local time

Mon, Sep 28, 1981, 10:03 AM PDT

UTC

1981-09-28 17:03:52 UTC

Depth

28.7 km (17.8 mi), shallow

Epicenter

40.319° N, 124.392° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 4.3 km horizontally, 3.1 km in depth

Depth from

From location

Station coverage gap

278°, poorly surrounded by stations

Stations used

4

• Ferndale, CaliforniaPopulation 1,369. Forecast31 kmSSW
• Fortuna, CaliforniaPopulation 12,000. Forecast37 kmSSW
• Chico, CaliforniaPopulation 121,345. Forecast227 kmWNW
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast884 kmNW

After

1. 2.511 km SE of Blue Lake, CaliforniaTue, Sep 29, 8:30 AM PDT · 16438 days ago · 25 km deep · 68 km away
2. 2.511 km SSE of Blue Lake, CaliforniaTue, Sep 29, 8:50 AM PDT · 16438 days ago · 26 km deep · 67 km away
3. 1.838 km W of Ferndale, CaliforniaWed, Sep 30, 3:34 AM PDT · 16437 days ago · 20 km deep · 42 km away
4. 2.239 km SW of Ferndale, CaliforniaThu, Oct 1, 4:28 AM PDT · 16436 days ago · 29 km deep · 18 km away
5. 2.037 km SW of Ferndale, CaliforniaFri, Oct 2, 4:06 AM PDT · 16435 days ago · 32 km deep · 15 km away
6. 2.138 km SW of Ferndale, CaliforniaFri, Oct 2, 6:31 AM PDT · 16435 days ago · 27 km deep · 14 km away
7. 1.83 km S of Humboldt Hill, CaliforniaSat, Oct 3, 1:59 AM PDT · 16434 days ago · 17 km deep · 45 km away
8. 2.356 km W of Indianola, CaliforniaSat, Oct 3, 2:36 AM PDT · 16434 days ago · 24 km deep · 66 km away
9. 2.52 km NE of Redway, CaliforniaSat, Oct 3, 5:56 AM PDT · 16434 days ago · 19 km deep · 54 km away
10. 2.822 km WSW of Weott, CaliforniaSat, Oct 3, 9:46 AM PDT · 16434 days ago · 7 km deep · 22 km away
11. 2.034 km SW of Ferndale, CaliforniaSat, Oct 3, 5:10 PM PDT · 16433 days ago · 27 km deep · 19 km away
12. 2.14 km SW of Big Lagoon, CaliforniaSun, Oct 4, 3:02 AM PDT · 16433 days ago · 13 km deep · 92 km away
13. 1.65 km S of Ferndale, CaliforniaSun, Oct 4, 4:36 AM PDT · 16433 days ago · 26 km deep · 26 km away
14. 1.925 km SSW of Ferndale, CASun, Oct 4, 4:31 PM PDT · 16433 days ago · 15 km deep · 6 km away
15. 2.475 km W of Indianola, CaliforniaSun, Oct 4, 6:28 PM PDT · 16432 days ago · 7 km deep · 80 km away
16. 1.540 km SW of Ferndale, CaliforniaSun, Oct 4, 6:39 PM PDT · 16432 days ago · 30 km deep · 21 km away
17. 1.534 km SW of Ferndale, CaliforniaSun, Oct 4, 7:08 PM PDT · 16432 days ago · 34 km deep · 9 km away
18. 2.714 km WSW of Scotia, CaliforniaMon, Oct 5, 4:40 AM PDT · 16432 days ago · 28 km deep · 17 km away
19. 1.636 km SW of Ferndale, CaliforniaMon, Oct 5, 2:45 PM PDT · 16432 days ago · 34 km deep · 11 km away
20. 3.337 km SW of Ferndale, CaliforniaMon, Oct 5, 3:18 PM PDT · 16432 days ago · 25 km deep · 12 km away
21. 1.837 km SW of Ferndale, CaliforniaMon, Oct 5, 3:28 PM PDT · 16432 days ago · 23 km deep · 11 km away
22. 1.738 km SW of Ferndale, CaliforniaMon, Oct 5, 4:41 PM PDT · 16431 days ago · 23 km deep · 12 km away
23. 2.376 km WSW of Ferndale, CaliforniaMon, Oct 5, 7:11 PM PDT · 16431 days ago · 4 km deep · 65 km away
24. 2.112 km WSW of Weott, CaliforniaMon, Oct 5, 7:44 PM PDT · 16431 days ago · 4 km deep · 30 km away
25. 3.310 km SW of Mad River, CaliforniaTue, Oct 6, 12:16 AM PDT · 16431 days ago · 22 km deep · 69 km away
26. 2.565 km W of Indianola, CaliforniaTue, Oct 6, 2:55 AM PDT · 16431 days ago · 5 km deep · 72 km away
27. 3.210 km SSW of Mad River, CaliforniaTue, Oct 6, 5:28 AM PDT · 16431 days ago · 21 km deep · 70 km away
28. 2.410 km SSW of Mad River, CaliforniaTue, Oct 6, 5:40 AM PDT · 16431 days ago · 20 km deep · 70 km away
29. 1.634 km SW of Scotia, CaliforniaTue, Oct 6, 10:49 AM PDT · 16431 days ago · 18 km deep · 6 km away
30. 1.643 km SW of Ferndale, CaliforniaTue, Oct 6, 1:04 PM PDT · 16431 days ago · 21 km deep · 20 km away
31. 1.79 km S of Ferndale, CaliforniaTue, Oct 6, 1:14 PM PDT · 16431 days ago · 22 km deep · 23 km away
32. 2.07 km W of Rio Dell, CaliforniaWed, Oct 7, 10:59 PM PDT · 16429 days ago · 21 km deep · 26 km away
33. 2.541 km SW of Ferndale, CaliforniaWed, Oct 7, 11:46 PM PDT · 16429 days ago · 25 km deep · 19 km away
34. 2.282 km WSW of Ferndale, CaliforniaThu, Oct 8, 1:21 AM PDT · 16429 days ago · 5 km deep · 70 km away
35. 1.835 km SW of Ferndale, CaliforniaThu, Oct 8, 2:56 AM PDT · 16429 days ago · 28 km deep · 12 km away
36. 1.94 km N of Redway, CaliforniaThu, Oct 8, 3:50 PM PDT · 16429 days ago · 20 km deep · 52 km away
37. 3.037 km SW of Ferndale, CaliforniaFri, Oct 9, 10:19 AM PDT · 16428 days ago · 27 km deep · 14 km away
38. 2.170 km WSW of Ferndale, CaliforniaFri, Oct 9, 12:02 PM PDT · 16428 days ago · 5 km deep · 57 km away
39. 1.733 km SW of Ferndale, CaliforniaFri, Oct 9, 4:08 PM PDT · 16428 days ago · 35 km deep · 9 km away
40. 1.736 km SW of Ferndale, CaliforniaSat, Oct 10, 1:13 PM PDT · 16427 days ago · 26 km deep · 12 km away
41. 1.779 km W of Ferndale, CaliforniaSun, Oct 11, 1:59 AM PDT · 16426 days ago · 5 km deep · 71 km away
42. 1.810 km SW of Trinity Village, CaliforniaSun, Oct 11, 2:49 AM PDT · 16426 days ago · 22 km deep · 86 km away
43. 1.535 km SSW of Ferndale, CaliforniaSun, Oct 11, 3:13 PM PDT · 16426 days ago · 23 km deep · 7 km away
44. 1.738 km SW of Ferndale, CaliforniaSun, Oct 11, 8:46 PM PDT · 16425 days ago · 37 km deep · 18 km away
45. 2.517 km WSW of Scotia, CaliforniaMon, Oct 12, 6:59 AM PDT · 16425 days ago · 28 km deep · 14 km away
46. 1.618 km WSW of Scotia, CaliforniaMon, Oct 12, 7:10 AM PDT · 16425 days ago · 28 km deep · 13 km away
47. 2.243 km SW of Ferndale, CaliforniaMon, Oct 12, 8:20 PM PDT · 16424 days ago · 17 km deep · 21 km away
48. 1.59 km W of Ferndale, CaliforniaTue, Oct 13, 2:01 AM PDT · 16424 days ago · 22 km deep · 30 km away
49. 3.336 km SW of Ferndale, CaliforniaTue, Oct 13, 9:36 AM PDT · 16424 days ago · 28 km deep · 13 km away
50. 1.58 km SW of Scotia, CaliforniaTue, Oct 13, 9:28 PM PDT · 16423 days ago · 31 km deep · 23 km away
51. 1.620 km SSW of Ferndale, CaliforniaWed, Oct 14, 12:07 AM PDT · 16423 days ago · 4 km deep · 11 km away
52. 1.737 km SSW of Ferndale, CaliforniaWed, Oct 14, 3:31 AM PDT · 16423 days ago · 19 km deep · 7 km away
53. 2.461 km WSW of Ferndale, CaliforniaWed, Oct 14, 6:01 AM PDT · 16423 days ago · 5 km deep · 49 km away
54. 1.754 km WSW of Ferndale, CaliforniaWed, Oct 14, 6:37 AM PDT · 16423 days ago · 30 km deep · 35 km away
55. 2.13 km NE of Redway, CaliforniaWed, Oct 14, 10:39 AM PDT · 16423 days ago · 20 km deep · 54 km away
56. 2.436 km SW of Ferndale, CaliforniaFri, Oct 16, 5:26 AM PDT · 16421 days ago · 27 km deep · 13 km away
57. 2.939 km SW of Ferndale, CAFri, Oct 16, 7:20 AM PDT · 16421 days ago · 25 km deep · 17 km away
58. 1.633 km SW of Ferndale, CaliforniaFri, Oct 16, 6:41 PM PDT · 16420 days ago · 23 km deep · 18 km away
59. 3.593 km WSW of Ferndale, CaliforniaFri, Oct 16, 8:26 PM PDT · 16420 days ago · 5 km deep · 81 km away
60. 2.3108 km WSW of Ferndale, CaliforniaFri, Oct 16, 10:56 PM PDT · 16420 days ago · 4 km deep · 95 km away

The first 60 of 185.

Before

1. 2.137 km SW of Ferndale, CaliforniaMon, Sep 28, 6:46 AM PDT · 16439 days ago · 28 km deep · 15 km away
2. 1.540 km SW of Ferndale, CaliforniaSun, Sep 27, 5:09 PM PDT · 16439 days ago · 24 km deep · 16 km away
3. 2.936 km SW of Ferndale, CaliforniaSun, Sep 27, 1:27 PM PDT · 16440 days ago · 23 km deep · 11 km away
4. 1.632 km SW of Ferndale, CaliforniaSun, Sep 27, 4:43 AM PDT · 16440 days ago · 34 km deep · 10 km away
5. 2.337 km SW of Ferndale, CaliforniaSun, Sep 27, 4:40 AM PDT · 16440 days ago · 26 km deep · 14 km away
6. 1.630 km SSW of Ferndale, CaliforniaSun, Sep 27, 1:37 AM PDT · 16440 days ago · 32 km deep · 3 km away
7. 2.034 km SW of Ferndale, CaliforniaSat, Sep 26, 5:56 PM PDT · 16440 days ago · 30 km deep · 10 km away
8. 2.118 km WSW of Scotia, CaliforniaSat, Sep 26, 2:45 PM PDT · 16441 days ago · 30 km deep · 12 km away
9. 3.243 km WNW of Shelter Cove, CaliforniaSat, Sep 26, 1:27 PM PDT · 16441 days ago · 0 km deep · 22 km away
10. 3.041 km SW of Ferndale, CaliforniaSat, Sep 26, 9:07 AM PDT · 16441 days ago · 20 km deep · 22 km away
11. 1.941 km SW of Ferndale, CaliforniaThu, Sep 24, 6:23 AM PDT · 16443 days ago · 30 km deep · 19 km away
12. 2.340 km SW of Ferndale, CaliforniaTue, Sep 22, 2:31 AM PDT · 16445 days ago · 28 km deep · 19 km away
13. 3.336 km SW of Ferndale, CaliforniaMon, Sep 21, 11:01 PM PDT · 16445 days ago · 27 km deep · 13 km away
14. 2.641 km SW of Ferndale, CaliforniaMon, Sep 21, 6:11 PM PDT · 16445 days ago · 26 km deep · 19 km away
15. 3.435 km SSW of Ferndale, CaliforniaMon, Sep 21, 4:21 AM PDT · 16446 days ago · 12 km deep · 7 km away
16. 1.50 km E of Ferndale, CaliforniaMon, Sep 21, 12:11 AM PDT · 16446 days ago · 5 km deep · 31 km away
17. 2.028 km SW of Scotia, CaliforniaSun, Sep 20, 12:47 AM PDT · 16447 days ago · 8 km deep · 9 km away
18. 2.045 km SW of Ferndale, CaliforniaSat, Sep 19, 10:36 PM PDT · 16447 days ago · 24 km deep · 26 km away
19. 2.333 km SW of Ferndale, CaliforniaSat, Sep 19, 9:10 AM PDT · 16448 days ago · 28 km deep · 13 km away
20. 1.726 km WSW of Ferndale, CaliforniaSat, Sep 19, 5:42 AM PDT · 16448 days ago · 25 km deep · 20 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc1068013. Read Thu, Oct 1, 2026, 11:02 AM UTC.