M1.9 earthquake 21 km WSW of Weott, California

Magnitude

1.9 (md), micro

Local time

Mon, May 22, 1978, 8:43 PM PDT

UTC

1978-05-23 03:43:58 UTC

Depth

4.0 km (2.5 mi), shallow

Epicenter

40.245° N, 124.154° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 1.6 km horizontally, 2.1 km in depth

Depth from

From location

Station coverage gap

266°, poorly surrounded by stations

Stations used

8

• Shelter Cove, CaliforniaPopulation 693. Forecast25 kmNNW
• Fortuna, CaliforniaPopulation 12,000. Forecast39 kmS
• Chico, CaliforniaPopulation 121,345. Forecast206 kmWNW
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast865 kmNW

After

1. 4.632 km SW of Ferndale, CaliforniaTue, May 23, 2:42 PM PDT · 17660 days ago · 29 km deep · 30 km away
2. 2.918 km W of Ferndale, CaliforniaTue, May 23, 4:10 PM PDT · 17660 days ago · 21 km deep · 46 km away
3. 1.617 km WNW of Indianola, CaliforniaWed, May 24, 10:18 AM PDT · 17659 days ago · 22 km deep · 60 km away
4. 3.013 km WNW of Laytonville, CaliforniaWed, May 24, 8:47 PM PDT · 17658 days ago · 1 km deep · 73 km away
5. 1.619 km NW of Mad River, CaliforniaThu, May 25, 2:53 PM PDT · 17658 days ago · 28 km deep · 53 km away
6. 2.069 km W of Ferndale, CaliforniaSun, May 28, 2:27 PM PDT · 17655 days ago · 2 km deep · 87 km away
7. 4.8off the coast of Northern CaliforniaSun, May 28, 5:46 PM PDT · 17655 days ago · 8 km deep · 98 km away
8. 1.735 km SW of Ferndale, CaliforniaMon, May 29, 10:20 PM PDT · 17653 days ago · 17 km deep · 41 km away
9. 1.838 km SW of Ferndale, CaliforniaTue, May 30, 5:38 AM PDT · 17653 days ago · 23 km deep · 37 km away
10. 1.726 km SW of Scotia, CaliforniaTue, May 30, 12:48 PM PDT · 17653 days ago · 11 km deep · 14 km away
11. 1.834 km SW of Ferndale, CaliforniaTue, May 30, 11:51 PM PDT · 17652 days ago · 19 km deep · 36 km away
12. 4.073 km WSW of Ferndale, CaliforniaThu, Jun 1, 11:38 AM PDT · 17651 days ago · 3 km deep · 81 km away
13. 1.645 km W of Ferndale, CaliforniaFri, Jun 2, 5:07 AM PDT · 17650 days ago · 15 km deep · 65 km away
14. 1.58 km W of Rio Dell, CaliforniaFri, Jun 2, 9:14 AM PDT · 17650 days ago · 19 km deep · 27 km away
15. 1.60 km WSW of Ferndale, CaliforniaSat, Jun 3, 5:08 AM PDT · 17649 days ago · 21 km deep · 38 km away
16. 1.645 km W of Ferndale, CaliforniaSat, Jun 3, 7:35 AM PDT · 17649 days ago · 7 km deep · 70 km away
17. 2.351 km W of Ferndale, CaliforniaSat, Jun 3, 1:28 PM PDT · 17649 days ago · 3 km deep · 74 km away
18. 1.728 km SW of Ferndale, CaliforniaSun, Jun 4, 3:43 AM PDT · 17648 days ago · 21 km deep · 30 km away
19. 1.753 km WNW of Indianola, CaliforniaSun, Jun 4, 6:43 AM PDT · 17648 days ago · 0 km deep · 85 km away
20. 1.617 km SW of Scotia, CaliforniaMon, Jun 5, 1:12 AM PDT · 17647 days ago · 22 km deep · 19 km away
21. 1.710 km E of Hayfork, CaliforniaMon, Jun 5, 3:21 AM PDT · 17647 days ago · 25 km deep · 98 km away
22. 1.96 km SW of Scotia, CaliforniaMon, Jun 5, 4:40 AM PDT · 17647 days ago · 27 km deep · 22 km away
23. 1.81 km WSW of Ferndale, CaliforniaMon, Jun 5, 6:52 PM PDT · 17647 days ago · 12 km deep · 38 km away
24. 1.644 km SW of Ferndale, CaliforniaTue, Jun 6, 1:08 AM PDT · 17646 days ago · 20 km deep · 36 km away
25. 1.835 km W of Ferndale, CaliforniaTue, Jun 6, 4:02 AM PDT · 17646 days ago · 20 km deep · 62 km away
26. 1.741 km SW of Ferndale, CaliforniaTue, Jun 6, 6:12 AM PDT · 17646 days ago · 5 km deep · 37 km away
27. 1.86 km W of Scotia, CaliforniaTue, Jun 6, 6:47 AM PDT · 17646 days ago · 22 km deep · 25 km away
28. 1.78 km NE of Hydesville, CaliforniaTue, Jun 6, 7:28 AM PDT · 17646 days ago · 23 km deep · 41 km away
29. 1.59 km SSW of Ferndale, CaliforniaTue, Jun 6, 11:44 PM PDT · 17645 days ago · 20 km deep · 31 km away
30. 1.630 km SW of Ferndale, CaliforniaWed, Jun 7, 1:43 AM PDT · 17645 days ago · 27 km deep · 40 km away
31. 1.631 km SW of Ferndale, CaliforniaWed, Jun 7, 11:00 AM PDT · 17645 days ago · 21 km deep · 30 km away
32. 1.726 km SW of Scotia, CaliforniaWed, Jun 7, 2:50 PM PDT · 17645 days ago · 18 km deep · 19 km away
33. 1.787 km WSW of Ferndale, CaliforniaFri, Jun 9, 1:00 AM PDT · 17643 days ago · 4 km deep · 88 km away
34. 1.627 km WSW of Ferndale, CaliforniaFri, Jun 9, 2:58 AM PDT · 17643 days ago · 24 km deep · 41 km away
35. 2.470 km W of Ferndale, CaliforniaFri, Jun 9, 2:10 PM PDT · 17643 days ago · 5 km deep · 83 km away
36. 3.016 km SSW of Ferndale, CaliforniaFri, Jun 9, 9:16 PM PDT · 17642 days ago · 21 km deep · 29 km away
37. 2.66 km W of Loleta, CaliforniaFri, Jun 9, 9:58 PM PDT · 17642 days ago · 24 km deep · 45 km away
38. 2.617 km SSW of Ferndale, CaliforniaSat, Jun 10, 12:02 AM PDT · 17642 days ago · 22 km deep · 25 km away
39. 1.715 km NNE of Redcrest, CaliforniaSat, Jun 10, 1:04 AM PDT · 17642 days ago · 21 km deep · 40 km away
40. 1.663 km SW of Ferndale, CaliforniaSat, Jun 10, 2:36 AM PDT · 17642 days ago · 6 km deep · 61 km away
41. 1.824 km WNW of Fields Landing, CaliforniaSat, Jun 10, 5:22 AM PDT · 17642 days ago · 23 km deep · 69 km away
42. 1.830 km SW of Ferndale, CaliforniaSat, Jun 10, 2:39 PM PDT · 17642 days ago · 22 km deep · 30 km away
43. 1.882 km W of Ferndale, CaliforniaSat, Jun 10, 8:35 PM PDT · 17641 days ago · 4 km deep · 93 km away
44. 2.629 km SW of Ferndale, CaliforniaSun, Jun 11, 1:11 AM PDT · 17641 days ago · 19 km deep · 30 km away
45. 2.429 km SW of Ferndale, CaliforniaSun, Jun 11, 10:12 AM PDT · 17641 days ago · 22 km deep · 30 km away
46. 1.838 km W of Indianola, CaliforniaMon, Jun 12, 3:51 AM PDT · 17640 days ago · 12 km deep · 69 km away
47. 1.615 km SE of Indianola, CaliforniaMon, Jun 12, 5:04 AM PDT · 17640 days ago · 21 km deep · 54 km away
48. 1.841 km SSW of Ferndale, CaliforniaMon, Jun 12, 6:48 AM PDT · 17640 days ago · 29 km deep · 33 km away
49. 1.611 km WSW of Scotia, CaliforniaMon, Jun 12, 5:33 PM PDT · 17640 days ago · 19 km deep · 24 km away
50. 2.332 km SW of Ferndale, CaliforniaTue, Jun 13, 4:51 AM PDT · 17639 days ago · 23 km deep · 31 km away
51. 2.024 km SW of Ferndale, CaliforniaThu, Jun 15, 12:25 AM PDT · 17637 days ago · 26 km deep · 30 km away
52. 1.63 km W of Miranda, CaliforniaThu, Jun 15, 5:12 PM PDT · 17637 days ago · 16 km deep · 25 km away
53. 1.88 km W of Weott, CaliforniaSat, Jun 17, 1:49 AM PDT · 17635 days ago · 23 km deep · 14 km away
54. 3.38 km W of Rio Dell, CaliforniaSat, Jun 17, 9:48 AM PDT · 17635 days ago · 20 km deep · 27 km away
55. 2.168 km W of Ferndale, CaliforniaSat, Jun 17, 4:30 PM PDT · 17635 days ago · 6 km deep · 81 km away
56. 3.878 km W of Ferndale, CaliforniaSun, Jun 18, 3:56 AM PDT · 17634 days ago · 5 km deep · 99 km away
57. 1.614 km SW of Ferndale, CaliforniaSun, Jun 18, 6:54 AM PDT · 17634 days ago · 25 km deep · 31 km away
58. 1.611 km SSW of Ferndale, CaliforniaSun, Jun 18, 7:37 AM PDT · 17634 days ago · 20 km deep · 29 km away
59. 4.221 km W of Ferndale, CaliforniaSun, Jun 18, 4:05 PM PDT · 17634 days ago · 23 km deep · 45 km away
60. 2.271 km W of Ferndale, CaliforniaSun, Jun 18, 4:15 PM PDT · 17634 days ago · 19 km deep · 88 km away

The first 60 of 133.

Before

1. 2.341 km SW of Ferndale, CaliforniaMon, May 22, 10:47 AM PDT · 17661 days ago · 19 km deep · 44 km away
2. 2.150 km W of Ferndale, CaliforniaSun, May 21, 7:34 PM PDT · 17662 days ago · 26 km deep · 70 km away
3. 2.5near the coast of Northern CaliforniaSun, May 21, 5:34 PM PDT · 17662 days ago · 20 km deep · 30 km away
4. 1.517 km NW of Shelter Cove, CaliforniaSun, May 21, 3:37 PM PDT · 17662 days ago · 9 km deep · 13 km away
5. 3.743 km SW of Ferndale, CaliforniaSun, May 21, 9:34 AM PDT · 17662 days ago · 22 km deep · 42 km away
6. 2.922 km NNW of Shelter Cove, CaliforniaSun, May 21, 2:43 AM PDT · 17662 days ago · 0 km deep · 3 km away
7. 2.07 km E of Hayfork, CaliforniaSun, May 21, 1:09 AM PDT · 17662 days ago · 21 km deep · 95 km away
8. 1.625 km SSW of Ferndale, CaliforniaSat, May 20, 4:25 AM PDT · 17663 days ago · 24 km deep · 28 km away
9. 1.92 km NNE of Hayfork, CaliforniaSat, May 20, 3:37 AM PDT · 17663 days ago · 14 km deep · 91 km away
10. 1.51 km NNE of Trinidad, CaliforniaFri, May 19, 6:53 AM PDT · 17664 days ago · 17 km deep · 92 km away
11. 2.229 km SW of Ferndale, CaliforniaThu, May 18, 11:47 PM PDT · 17664 days ago · 18 km deep · 32 km away
12. 2.34 km NNW of Redway, CaliforniaThu, May 18, 1:40 AM PDT · 17665 days ago · 21 km deep · 28 km away
13. 2.933 km SSW of Ferndale, CaliforniaThu, May 18, 1:12 AM PDT · 17665 days ago · 24 km deep · 29 km away
14. 2.734 km SW of Ferndale, CaliforniaThu, May 18, 12:57 AM PDT · 17665 days ago · 22 km deep · 30 km away
15. 2.422 km SW of Ferndale, CaliforniaWed, May 17, 3:38 AM PDT · 17666 days ago · 22 km deep · 29 km away
16. 2.731 km SW of Ferndale, CaliforniaWed, May 17, 3:14 AM PDT · 17666 days ago · 28 km deep · 30 km away
17. 1.92 km SW of Miranda, CaliforniaWed, May 17, 2:38 AM PDT · 17666 days ago · 13 km deep · 26 km away
18. 1.613 km WSW of Ferndale, CaliforniaWed, May 17, 2:27 AM PDT · 17666 days ago · 22 km deep · 37 km away
19. 3.230 km SW of Ferndale, CaliforniaTue, May 16, 7:55 PM PDT · 17667 days ago · 28 km deep · 29 km away
20. 1.629 km SW of Ferndale, CaliforniaSun, May 14, 12:19 AM PDT · 17669 days ago · 19 km deep · 31 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc1040381. Read Mon, Sep 28, 2026, 2:46 PM UTC.