M1.7 earthquake 26 km WSW of Ferndale, California

Magnitude

1.7 (Md, duration), micro

Magnitude from

Northern California Seismic System

Local time

Sat, Sep 19, 1981, 5:42 AM PDT

UTC

1981-09-19 12:42:35 UTC

Depth

25.4 km (15.8 mi), shallow

Epicenter

40.458° N, 124.532° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 4.5 km horizontally, 2.4 km in depth

Depth from

From location

Station coverage gap

293°, poorly surrounded by stations

Stations used

6

• Ferndale, CaliforniaPopulation 1,369. Forecast26 kmWSW
• Fortuna, CaliforniaPopulation 12,000. Forecast35 kmWSW
• Chico, CaliforniaPopulation 121,345. Forecast243 kmWNW

After

1. 2.333 km SW of Ferndale, CaliforniaSat, Sep 19, 9:10 AM PDT · 16450 days ago · 28 km deep · 12 km away
2. 2.045 km SW of Ferndale, CaliforniaSat, Sep 19, 10:36 PM PDT · 16449 days ago · 24 km deep · 19 km away
3. 2.028 km SW of Scotia, CaliforniaSun, Sep 20, 12:47 AM PDT · 16449 days ago · 8 km deep · 28 km away
4. 1.50 km E of Ferndale, CaliforniaMon, Sep 21, 12:11 AM PDT · 16448 days ago · 5 km deep · 27 km away
5. 3.435 km SSW of Ferndale, CaliforniaMon, Sep 21, 4:21 AM PDT · 16448 days ago · 12 km deep · 19 km away
6. 2.641 km SW of Ferndale, CaliforniaMon, Sep 21, 6:11 PM PDT · 16447 days ago · 26 km deep · 17 km away
7. 3.336 km SW of Ferndale, CaliforniaMon, Sep 21, 11:01 PM PDT · 16447 days ago · 27 km deep · 14 km away
8. 2.340 km SW of Ferndale, CaliforniaTue, Sep 22, 2:31 AM PDT · 16447 days ago · 28 km deep · 16 km away
9. 1.941 km SW of Ferndale, CaliforniaThu, Sep 24, 6:23 AM PDT · 16445 days ago · 30 km deep · 18 km away
10. 3.041 km SW of Ferndale, CaliforniaSat, Sep 26, 9:07 AM PDT · 16443 days ago · 20 km deep · 16 km away
11. 3.243 km WNW of Shelter Cove, CaliforniaSat, Sep 26, 1:27 PM PDT · 16442 days ago · 0 km deep · 33 km away
12. 2.118 km WSW of Scotia, CaliforniaSat, Sep 26, 2:45 PM PDT · 16442 days ago · 30 km deep · 21 km away
13. 2.034 km SW of Ferndale, CaliforniaSat, Sep 26, 5:56 PM PDT · 16442 days ago · 30 km deep · 15 km away
14. 1.630 km SSW of Ferndale, CaliforniaSun, Sep 27, 1:37 AM PDT · 16442 days ago · 32 km deep · 17 km away
15. 2.337 km SW of Ferndale, CaliforniaSun, Sep 27, 4:40 AM PDT · 16442 days ago · 26 km deep · 14 km away
16. 1.632 km SW of Ferndale, CaliforniaSun, Sep 27, 4:43 AM PDT · 16442 days ago · 34 km deep · 12 km away
17. 2.936 km SW of Ferndale, CaliforniaSun, Sep 27, 1:27 PM PDT · 16441 days ago · 23 km deep · 17 km away
18. 1.540 km SW of Ferndale, CaliforniaSun, Sep 27, 5:09 PM PDT · 16441 days ago · 24 km deep · 18 km away
19. 2.137 km SW of Ferndale, CaliforniaMon, Sep 28, 6:46 AM PDT · 16441 days ago · 28 km deep · 15 km away
20. 1.530 km SSW of Ferndale, CaliforniaMon, Sep 28, 10:03 AM PDT · 16440 days ago · 29 km deep · 20 km away
21. 2.511 km SE of Blue Lake, CaliforniaTue, Sep 29, 8:30 AM PDT · 16440 days ago · 25 km deep · 65 km away
22. 2.511 km SSE of Blue Lake, CaliforniaTue, Sep 29, 8:50 AM PDT · 16440 days ago · 26 km deep · 65 km away
23. 1.838 km W of Ferndale, CaliforniaWed, Sep 30, 3:34 AM PDT · 16439 days ago · 20 km deep · 23 km away
24. 2.239 km SW of Ferndale, CaliforniaThu, Oct 1, 4:28 AM PDT · 16438 days ago · 29 km deep · 15 km away
25. 2.6off the coast of Northern CaliforniaThu, Oct 1, 5:11 AM PDT · 16438 days ago · 4 km deep · 87 km away
26. 2.037 km SW of Ferndale, CaliforniaFri, Oct 2, 4:06 AM PDT · 16437 days ago · 32 km deep · 14 km away
27. 2.138 km SW of Ferndale, CaliforniaFri, Oct 2, 6:31 AM PDT · 16437 days ago · 27 km deep · 16 km away
28. 1.83 km S of Humboldt Hill, CaliforniaSat, Oct 3, 1:59 AM PDT · 16436 days ago · 17 km deep · 39 km away
29. 2.356 km W of Indianola, CaliforniaSat, Oct 3, 2:36 AM PDT · 16436 days ago · 24 km deep · 47 km away
30. 2.52 km NE of Redway, CaliforniaSat, Oct 3, 5:56 AM PDT · 16436 days ago · 19 km deep · 72 km away
31. 2.822 km WSW of Weott, CaliforniaSat, Oct 3, 9:46 AM PDT · 16435 days ago · 7 km deep · 41 km away
32. 2.034 km SW of Ferndale, CaliforniaSat, Oct 3, 5:10 PM PDT · 16435 days ago · 27 km deep · 9 km away
33. 2.14 km SW of Big Lagoon, CaliforniaSun, Oct 4, 3:02 AM PDT · 16435 days ago · 13 km deep · 80 km away
34. 1.65 km S of Ferndale, CaliforniaSun, Oct 4, 4:36 AM PDT · 16435 days ago · 26 km deep · 25 km away
35. 1.925 km SSW of Ferndale, CASun, Oct 4, 4:31 PM PDT · 16434 days ago · 15 km deep · 17 km away
36. 2.475 km W of Indianola, CaliforniaSun, Oct 4, 6:28 PM PDT · 16434 days ago · 7 km deep · 61 km away
37. 1.540 km SW of Ferndale, CaliforniaSun, Oct 4, 6:39 PM PDT · 16434 days ago · 30 km deep · 16 km away
38. 1.534 km SW of Ferndale, CaliforniaSun, Oct 4, 7:08 PM PDT · 16434 days ago · 34 km deep · 15 km away
39. 2.714 km WSW of Scotia, CaliforniaMon, Oct 5, 4:40 AM PDT · 16434 days ago · 28 km deep · 23 km away
40. 1.636 km SW of Ferndale, CaliforniaMon, Oct 5, 2:45 PM PDT · 16433 days ago · 34 km deep · 16 km away
41. 3.337 km SW of Ferndale, CaliforniaMon, Oct 5, 3:18 PM PDT · 16433 days ago · 25 km deep · 17 km away
42. 1.837 km SW of Ferndale, CaliforniaMon, Oct 5, 3:28 PM PDT · 16433 days ago · 23 km deep · 17 km away
43. 1.738 km SW of Ferndale, CaliforniaMon, Oct 5, 4:41 PM PDT · 16433 days ago · 23 km deep · 17 km away
44. 2.376 km WSW of Ferndale, CaliforniaMon, Oct 5, 7:11 PM PDT · 16433 days ago · 4 km deep · 52 km away
45. 2.112 km WSW of Weott, CaliforniaMon, Oct 5, 7:44 PM PDT · 16433 days ago · 4 km deep · 46 km away
46. 3.310 km SW of Mad River, CaliforniaTue, Oct 6, 12:16 AM PDT · 16433 days ago · 22 km deep · 81 km away
47. 2.565 km W of Indianola, CaliforniaTue, Oct 6, 2:55 AM PDT · 16433 days ago · 5 km deep · 53 km away
48. 3.210 km SSW of Mad River, CaliforniaTue, Oct 6, 5:28 AM PDT · 16433 days ago · 21 km deep · 82 km away
49. 2.410 km SSW of Mad River, CaliforniaTue, Oct 6, 5:40 AM PDT · 16433 days ago · 20 km deep · 82 km away
50. 1.634 km SW of Scotia, CaliforniaTue, Oct 6, 10:49 AM PDT · 16432 days ago · 18 km deep · 24 km away
51. 1.643 km SW of Ferndale, CaliforniaTue, Oct 6, 1:04 PM PDT · 16432 days ago · 21 km deep · 19 km away
52. 1.79 km S of Ferndale, CaliforniaTue, Oct 6, 1:14 PM PDT · 16432 days ago · 22 km deep · 25 km away
53. 2.07 km W of Rio Dell, CaliforniaWed, Oct 7, 10:59 PM PDT · 16431 days ago · 21 km deep · 29 km away
54. 2.541 km SW of Ferndale, CaliforniaWed, Oct 7, 11:46 PM PDT · 16431 days ago · 25 km deep · 17 km away
55. 2.282 km WSW of Ferndale, CaliforniaThu, Oct 8, 1:21 AM PDT · 16431 days ago · 5 km deep · 58 km away
56. 1.835 km SW of Ferndale, CaliforniaThu, Oct 8, 2:56 AM PDT · 16431 days ago · 28 km deep · 15 km away
57. 1.94 km N of Redway, CaliforniaThu, Oct 8, 3:50 PM PDT · 16430 days ago · 20 km deep · 69 km away
58. 3.037 km SW of Ferndale, CaliforniaFri, Oct 9, 10:19 AM PDT · 16429 days ago · 27 km deep · 15 km away
59. 2.170 km WSW of Ferndale, CaliforniaFri, Oct 9, 12:02 PM PDT · 16429 days ago · 5 km deep · 45 km away
60. 1.733 km SW of Ferndale, CaliforniaFri, Oct 9, 4:08 PM PDT · 16429 days ago · 35 km deep · 15 km away

The first 60 of 189.

Before

1. 1.749 km WSW of Ferndale, CaliforniaSat, Sep 19, 5:19 AM PDT · 16450 days ago · 5 km deep · 23 km away
2. 2.117 km WNW of Indianola, CaliforniaFri, Sep 18, 8:59 PM PDT · 16450 days ago · 24 km deep · 34 km away
3. 3.337 km SW of Ferndale, CaliforniaFri, Sep 18, 4:34 PM PDT · 16450 days ago · 28 km deep · 15 km away
4. 1.73 km SE of Scotia, CaliforniaFri, Sep 18, 9:07 AM PDT · 16451 days ago · 26 km deep · 39 km away
5. 1.710 km W of Scotia, CaliforniaFri, Sep 18, 3:15 AM PDT · 16451 days ago · 22 km deep · 26 km away
6. 1.914 km S of Scotia, CaliforniaFri, Sep 18, 2:25 AM PDT · 16451 days ago · 31 km deep · 36 km away
7. 1.937 km SW of Ferndale, CaliforniaThu, Sep 17, 2:52 PM PDT · 16451 days ago · 28 km deep · 15 km away
8. 1.819 km SW of Scotia, CaliforniaThu, Sep 17, 11:41 AM PDT · 16451 days ago · 31 km deep · 28 km away
9. 1.837 km SW of Ferndale, CaliforniaThu, Sep 17, 8:07 AM PDT · 16452 days ago · 27 km deep · 15 km away
10. 1.69 km SSE of Blue Lake, CaliforniaThu, Sep 17, 6:55 AM PDT · 16452 days ago · 26 km deep · 64 km away
11. 2.160 km W of Ferndale, CaliforniaThu, Sep 17, 5:05 AM PDT · 16452 days ago · 15 km deep · 39 km away
12. 2.111 km WSW of Scotia, CaliforniaWed, Sep 16, 8:28 PM PDT · 16452 days ago · 30 km deep · 27 km away
13. 1.935 km SSW of Ferndale, CaliforniaWed, Sep 16, 8:05 PM PDT · 16452 days ago · 25 km deep · 20 km away
14. 2.433 km SW of Ferndale, CaliforniaWed, Sep 16, 7:39 PM PDT · 16452 days ago · 26 km deep · 14 km away
15. 2.837 km SW of Ferndale, CaliforniaWed, Sep 16, 11:49 AM PDT · 16452 days ago · 27 km deep · 15 km away
16. 1.838 km SW of Ferndale, CaliforniaWed, Sep 16, 11:46 AM PDT · 16452 days ago · 29 km deep · 15 km away
17. 1.620 km W of Trinidad, CaliforniaWed, Sep 16, 8:25 AM PDT · 16453 days ago · 9 km deep · 69 km away
18. 1.943 km SW of Ferndale, CaliforniaWed, Sep 16, 8:25 AM PDT · 16453 days ago · 31 km deep · 19 km away
19. 3.031 km SW of Ferndale, CaliforniaWed, Sep 16, 8:15 AM PDT · 16453 days ago · 25 km deep · 14 km away
20. 1.915 km ESE of Pine Hills, CaliforniaWed, Sep 16, 7:58 AM PDT · 16453 days ago · 22 km deep · 51 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc1067783. Read Sat, Oct 3, 2026, 4:04 AM UTC.