M1.5 earthquake 45 km SW of Ferndale, California

Magnitude

1.5 (Md, duration), micro

Magnitude from

Northern California Seismic System

Local time

Fri, Aug 18, 1978, 9:45 PM PDT

UTC

1978-08-19 04:45:23 UTC

Depth

15.5 km (9.7 mi), shallow

Epicenter

40.303° N, 124.671° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 3.1 km horizontally, 1.2 km in depth

Depth from

From location

Station coverage gap

295°, poorly surrounded by stations

Stations used

4

• Ferndale, CaliforniaPopulation 1,369. Forecast46 kmSW
• Fortuna, CaliforniaPopulation 12,000. Forecast54 kmSW
• Chico, CaliforniaPopulation 121,345. Forecast250 kmWNW
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast898 kmNW

After

1. 2.032 km W of Trinidad, CaliforniaFri, Aug 18, 10:32 PM PDT · 17575 days ago · 15 km deep · 81 km away
2. 2.824 km SSW of Ferndale, CaliforniaSat, Aug 19, 3:02 AM PDT · 17575 days ago · 19 km deep · 26 km away
3. 1.610 km S of Ferndale, CaliforniaSat, Aug 19, 12:38 PM PDT · 17575 days ago · 18 km deep · 39 km away
4. 1.530 km WNW of Samoa, CaliforniaSat, Aug 19, 2:21 PM PDT · 17575 days ago · 19 km deep · 69 km away
5. 1.625 km SW of Ferndale, CaliforniaSat, Aug 19, 5:32 PM PDT · 17574 days ago · 18 km deep · 22 km away
6. 2.435 km W of Ferndale, CaliforniaSat, Aug 19, 9:51 PM PDT · 17574 days ago · 24 km deep · 25 km away
7. 2.343 km SW of Ferndale, CaliforniaSun, Aug 20, 3:54 AM PDT · 17574 days ago · 22 km deep · 2 km away
8. 3.328 km SW of Ferndale, CaliforniaSun, Aug 20, 11:42 AM PDT · 17574 days ago · 23 km deep · 18 km away
9. 2.828 km SW of Ferndale, CaliforniaSun, Aug 20, 11:44 AM PDT · 17574 days ago · 27 km deep · 17 km away
10. 2.527 km SW of Ferndale, CaliforniaSun, Aug 20, 1:32 PM PDT · 17574 days ago · 23 km deep · 18 km away
11. 1.625 km SSW of Ferndale, CaliforniaMon, Aug 21, 4:28 AM PDT · 17573 days ago · 18 km deep · 23 km away
12. 1.634 km SSW of Ferndale, CaliforniaMon, Aug 21, 6:52 PM PDT · 17572 days ago · 28 km deep · 16 km away
13. 1.644 km W of Ferndale, CaliforniaTue, Aug 22, 1:43 AM PDT · 17572 days ago · 24 km deep · 32 km away
14. 1.723 km WSW of Ferndale, CaliforniaTue, Aug 22, 11:55 PM PDT · 17571 days ago · 29 km deep · 27 km away
15. 1.641 km W of Ferndale, CaliforniaWed, Aug 23, 1:09 AM PDT · 17571 days ago · 22 km deep · 31 km away
16. 2.233 km SSW of Ferndale, CaliforniaWed, Aug 23, 6:54 AM PDT · 17571 days ago · 19 km deep · 21 km away
17. 1.824 km SW of Ferndale, CaliforniaThu, Aug 24, 12:34 AM PDT · 17570 days ago · 19 km deep · 22 km away
18. 1.94 km NE of Redway, CaliforniaThu, Aug 24, 12:50 AM PDT · 17570 days ago · 5 km deep · 78 km away
19. 2.835 km WSW of Ferndale, CaliforniaThu, Aug 24, 10:52 PM PDT · 17569 days ago · 20 km deep · 17 km away
20. 1.637 km WSW of Ferndale, CaliforniaFri, Aug 25, 5:17 AM PDT · 17569 days ago · 30 km deep · 15 km away
21. 1.94 km S of Phillipsville, CaliforniaFri, Aug 25, 8:15 AM PDT · 17569 days ago · 4 km deep · 76 km away
22. 2.08 km ENE of Benbow, CaliforniaFri, Aug 25, 11:44 AM PDT · 17569 days ago · 14 km deep · 87 km away
23. 1.517 km SSW of Ferndale, CaliforniaFri, Aug 25, 10:27 PM PDT · 17568 days ago · 27 km deep · 30 km away
24. 1.813 km SE of Blue Lake, CaliforniaSat, Aug 26, 4:20 AM PDT · 17568 days ago · 22 km deep · 85 km away
25. 2.526 km SW of Ferndale, CaliforniaSat, Aug 26, 10:22 AM PDT · 17568 days ago · 18 km deep · 20 km away
26. 2.21 km SSW of Garberville, CaliforniaSun, Aug 27, 1:29 AM PDT · 17567 days ago · 11 km deep · 78 km away
27. 1.854 km W of Trinidad, CaliforniaSun, Aug 27, 4:06 AM PDT · 17567 days ago · 8 km deep · 92 km away
28. 2.324 km NE of Hydesville, CaliforniaSun, Aug 27, 7:39 AM PDT · 17567 days ago · 26 km deep · 80 km away
29. 1.60 km SSE of Samoa, CaliforniaSun, Aug 27, 9:05 AM PDT · 17567 days ago · 16 km deep · 70 km away
30. 1.716 km SW of Weott, CaliforniaSun, Aug 27, 5:55 PM PDT · 17566 days ago · 19 km deep · 53 km away
31. 2.00 km NNE of Garberville, CaliforniaSun, Aug 27, 6:00 PM PDT · 17566 days ago · 9 km deep · 78 km away
32. 1.72 km E of Loleta, CaliforniaMon, Aug 28, 9:10 PM PDT · 17565 days ago · 18 km deep · 55 km away
33. 2.525 km SW of Ferndale, CaliforniaTue, Aug 29, 2:49 PM PDT · 17565 days ago · 26 km deep · 21 km away
34. 2.220 km SSW of Ferndale, CaliforniaTue, Aug 29, 3:12 PM PDT · 17565 days ago · 31 km deep · 32 km away
35. 2.525 km SSW of Ferndale, CaliforniaWed, Aug 30, 9:04 PM PDT · 17563 days ago · 19 km deep · 23 km away
36. 3.1near the coast of Northern CaliforniaFri, Sep 1, 2:02 AM PDT · 17562 days ago · 21 km deep · 25 km away
37. 1.622 km WSW of Ferndale, CaliforniaFri, Sep 1, 4:49 AM PDT · 17562 days ago · 21 km deep · 27 km away
38. 2.339 km SW of Ferndale, CaliforniaFri, Sep 1, 11:03 AM PDT · 17562 days ago · 13 km deep · 8 km away
39. 1.74 km S of Ferndale, CaliforniaSat, Sep 2, 5:21 AM PDT · 17561 days ago · 25 km deep · 43 km away
40. 1.831 km WSW of Ferndale, CaliforniaSat, Sep 2, 4:55 PM PDT · 17560 days ago · 26 km deep · 18 km away
41. 2.525 km SW of Ferndale, CaliforniaSun, Sep 3, 10:02 AM PDT · 17560 days ago · 27 km deep · 20 km away
42. 2.990 km WSW of Ferndale, CaliforniaSun, Sep 3, 5:43 PM PDT · 17559 days ago · 6 km deep · 55 km away
43. 2.126 km SW of Ferndale, CaliforniaSun, Sep 3, 7:48 PM PDT · 17559 days ago · 18 km deep · 20 km away
44. 2.319 km SW of Ferndale, CaliforniaSun, Sep 3, 7:52 PM PDT · 17559 days ago · 23 km deep · 27 km away
45. 2.0124 km W of Ferndale, CaliforniaSun, Sep 3, 7:59 PM PDT · 17559 days ago · 5 km deep · 89 km away
46. 1.69 km S of Ferndale, CaliforniaMon, Sep 4, 4:34 AM PDT · 17559 days ago · 19 km deep · 42 km away
47. 1.523 km W of Indianola, CaliforniaMon, Sep 4, 4:47 AM PDT · 17559 days ago · 24 km deep · 48 km away
48. 1.730 km WNW of Ferndale, CaliforniaMon, Sep 4, 3:15 PM PDT · 17559 days ago · 15 km deep · 37 km away
49. 1.630 km SW of Ferndale, CaliforniaMon, Sep 4, 8:33 PM PDT · 17558 days ago · 24 km deep · 16 km away
50. 3.525 km SSW of Ferndale, CaliforniaTue, Sep 5, 12:13 AM PDT · 17558 days ago · 19 km deep · 24 km away
51. 2.531 km WSW of Ferndale, CaliforniaTue, Sep 5, 8:53 AM PDT · 17558 days ago · 21 km deep · 22 km away
52. 3.033 km WSW of Ferndale, CaliforniaTue, Sep 5, 12:34 PM PDT · 17558 days ago · 25 km deep · 23 km away
53. 1.537 km SSW of Ferndale, CaliforniaTue, Sep 5, 5:05 PM PDT · 17557 days ago · 9 km deep · 16 km away
54. 1.526 km SSW of Ferndale, CaliforniaWed, Sep 6, 7:50 PM PDT · 17556 days ago · 30 km deep · 22 km away
55. 2.5128 km W of Ferndale, CaliforniaWed, Sep 6, 9:08 PM PDT · 17556 days ago · 4 km deep · 97 km away
56. 2.4off the coast of Northern CaliforniaThu, Sep 7, 5:59 AM PDT · 17556 days ago · 4 km deep · 49 km away
57. 1.914 km WNW of Fields Landing, CaliforniaThu, Sep 7, 6:24 AM PDT · 17556 days ago · 23 km deep · 56 km away
58. 1.672 km W of Ferndale, CaliforniaThu, Sep 7, 6:50 AM PDT · 17556 days ago · 9 km deep · 41 km away
59. 1.59 km S of Ferndale, CaliforniaThu, Sep 7, 9:45 PM PDT · 17555 days ago · 18 km deep · 39 km away
60. 1.717 km SSW of Ferndale, CaliforniaFri, Sep 8, 12:26 AM PDT · 17555 days ago · 28 km deep · 32 km away

The first 60 of 190.

Before

1. 2.0near the coast of Northern CaliforniaThu, Aug 17, 2:23 PM PDT · 17577 days ago · 18 km deep · 51 km away
2. 2.3near the coast of Northern CaliforniaThu, Aug 17, 12:45 PM PDT · 17577 days ago · 19 km deep · 24 km away
3. 1.89 km S of Ferndale, CaliforniaWed, Aug 16, 9:51 PM PDT · 17577 days ago · 19 km deep · 39 km away
4. 1.627 km SW of Ferndale, CaliforniaWed, Aug 16, 7:24 PM PDT · 17577 days ago · 19 km deep · 20 km away
5. 1.515 km SSW of Ferndale, CaliforniaWed, Aug 16, 6:30 PM PDT · 17577 days ago · 7 km deep · 33 km away
6. 1.727 km SSW of Ferndale, CaliforniaWed, Aug 16, 1:59 PM PDT · 17578 days ago · 19 km deep · 21 km away
7. 1.626 km SW of Ferndale, CaliforniaWed, Aug 16, 11:52 AM PDT · 17578 days ago · 19 km deep · 21 km away
8. 3.025 km SSW of Ferndale, CaliforniaWed, Aug 16, 9:51 AM PDT · 17578 days ago · 19 km deep · 24 km away
9. 2.025 km SSW of Ferndale, CaliforniaWed, Aug 16, 7:33 AM PDT · 17578 days ago · 19 km deep · 24 km away
10. 1.523 km SSW of Ferndale, CaliforniaWed, Aug 16, 3:07 AM PDT · 17578 days ago · 20 km deep · 27 km away
11. 1.825 km SSW of Ferndale, CaliforniaWed, Aug 16, 2:39 AM PDT · 17578 days ago · 19 km deep · 25 km away
12. 2.023 km SSW of Ferndale, CaliforniaWed, Aug 16, 2:36 AM PDT · 17578 days ago · 18 km deep · 25 km away
13. 1.626 km SW of Ferndale, CaliforniaWed, Aug 16, 2:29 AM PDT · 17578 days ago · 19 km deep · 21 km away
14. 1.624 km SW of Ferndale, CaliforniaWed, Aug 16, 1:48 AM PDT · 17578 days ago · 20 km deep · 23 km away
15. 2.323 km SSW of Ferndale, CaliforniaWed, Aug 16, 1:36 AM PDT · 17578 days ago · 20 km deep · 27 km away
16. 1.625 km SSW of Ferndale, CaliforniaWed, Aug 16, 1:13 AM PDT · 17578 days ago · 19 km deep · 22 km away
17. 1.625 km SSW of Ferndale, CaliforniaWed, Aug 16, 12:56 AM PDT · 17578 days ago · 19 km deep · 24 km away
18. 1.725 km SSW of Ferndale, CaliforniaWed, Aug 16, 12:53 AM PDT · 17578 days ago · 21 km deep · 22 km away
19. 2.025 km SSW of Ferndale, CaliforniaWed, Aug 16, 12:51 AM PDT · 17578 days ago · 20 km deep · 23 km away
20. 2.027 km SSW of Ferndale, CaliforniaWed, Aug 16, 12:49 AM PDT · 17578 days ago · 19 km deep · 22 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc1041749. Read Thu, Oct 1, 2026, 10:36 AM UTC.