M2.1 earthquake 71 km W of Samoa, California

Magnitude

2.1 (md), micro

Local time

Tue, Jun 20, 1978, 4:21 AM PDT

UTC

1978-06-20 11:21:10 UTC

Depth

4.4 km (2.7 mi), shallow

Epicenter

40.929° N, 125.024° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 11.2 km horizontally, 14.9 km in depth

Depth from

From location

Station coverage gap

314°, poorly surrounded by stations

Stations used

6

• Bayview, CaliforniaPopulation 2,510. Forecast73 kmWNW
• Eureka, CaliforniaPopulation 27,017. Forecast74 kmWNW
• Chico, CaliforniaPopulation 121,345. Forecast301 kmWNW

After

1. 1.628 km SW of Ferndale, CaliforniaTue, Jun 20, 12:16 PM PDT · 17633 days ago · 22 km deep · 75 km away
2. 1.523 km SW of Ferndale, CaliforniaTue, Jun 20, 3:37 PM PDT · 17633 days ago · 27 km deep · 74 km away
3. 1.915 km SSW of Ferndale, CaliforniaWed, Jun 21, 2:59 AM PDT · 17632 days ago · 21 km deep · 82 km away
4. 1.920 km SSW of Ferndale, CaliforniaWed, Jun 21, 6:21 AM PDT · 17632 days ago · 24 km deep · 78 km away
5. 1.710 km SSW of Scotia, CaliforniaWed, Jun 21, 2:57 PM PDT · 17632 days ago · 36 km deep · 96 km away
6. 2.217 km SSW of Ferndale, CaliforniaThu, Jun 22, 9:13 PM PDT · 17631 days ago · 18 km deep · 83 km away
7. 1.724 km SSW of Ferndale, CaliforniaThu, Jun 22, 10:10 PM PDT · 17630 days ago · 23 km deep · 82 km away
8. 2.428 km SSW of Ferndale, CaliforniaFri, Jun 23, 7:00 AM PDT · 17630 days ago · 23 km deep · 81 km away
9. 1.5near the coast of Northern CaliforniaSat, Jun 24, 7:15 AM PDT · 17629 days ago · 11 km deep · 43 km away
10. 1.724 km SSW of Ferndale, CaliforniaSat, Jun 24, 7:22 AM PDT · 17629 days ago · 25 km deep · 82 km away
11. 1.96 km WNW of McKinleyville, CaliforniaSun, Jun 25, 9:34 AM PDT · 17628 days ago · 4 km deep · 71 km away
12. 1.67 km WSW of Rio Dell, CaliforniaSun, Jun 25, 8:57 PM PDT · 17628 days ago · 28 km deep · 86 km away
13. 3.132 km SSW of Ferndale, CaliforniaMon, Jun 26, 4:10 AM PDT · 17627 days ago · 26 km deep · 82 km away
14. 2.116 km WSW of Scotia, CaliforniaMon, Jun 26, 5:19 AM PDT · 17627 days ago · 20 km deep · 84 km away
15. 2.823 km W of Samoa, CaliforniaMon, Jun 26, 7:14 AM PDT · 17627 days ago · 23 km deep · 48 km away
16. 2.525 km SSW of Ferndale, CaliforniaMon, Jun 26, 10:54 AM PDT · 17627 days ago · 24 km deep · 79 km away
17. 2.735 km SW of Ferndale, CaliforniaMon, Jun 26, 11:59 AM PDT · 17627 days ago · 27 km deep · 79 km away
18. 1.67 km W of Rio Dell, CaliforniaMon, Jun 26, 2:45 PM PDT · 17627 days ago · 19 km deep · 85 km away
19. 1.517 km S of Ferndale, CaliforniaWed, Jun 28, 3:57 AM PDT · 17625 days ago · 20 km deep · 83 km away
20. 2.446 km WNW of Shelter Cove, CaliforniaWed, Jun 28, 2:45 PM PDT · 17625 days ago · 4 km deep · 88 km away
21. 2.010 km SW of Trinidad, CaliforniaWed, Jun 28, 6:05 PM PDT · 17625 days ago · 23 km deep · 68 km away
22. 1.559 km WSW of Ferndale, CaliforniaFri, Jun 30, 5:13 AM PDT · 17623 days ago · 5 km deep · 56 km away
23. 2.353 km WNW of Big Lagoon, CaliforniaFri, Jun 30, 7:41 PM PDT · 17623 days ago · 4 km deep · 44 km away
24. 3.39 km S of Ferndale, CaliforniaFri, Jun 30, 7:58 PM PDT · 17623 days ago · 19 km deep · 80 km away
25. 2.436 km SW of Ferndale, CaliforniaSat, Jul 1, 12:03 AM PDT · 17622 days ago · 22 km deep · 79 km away
26. 2.030 km SSW of Ferndale, CaliforniaSun, Jul 2, 8:57 AM PDT · 17621 days ago · 30 km deep · 82 km away
27. 1.710 km WNW of Manila, CaliforniaMon, Jul 3, 4:22 PM PDT · 17620 days ago · 20 km deep · 63 km away
28. 1.725 km SSW of Scotia, CaliforniaMon, Jul 3, 7:11 PM PDT · 17620 days ago · -1 km deep · 96 km away
29. 1.628 km WSW of Ferndale, CaliforniaMon, Jul 3, 10:35 PM PDT · 17619 days ago · 22 km deep · 59 km away
30. 2.56 km SSW of Scotia, CaliforniaTue, Jul 4, 11:50 AM PDT · 17619 days ago · 25 km deep · 95 km away
31. 2.713 km WNW of Samoa, CaliforniaTue, Jul 4, 12:42 PM PDT · 17619 days ago · 23 km deep · 59 km away
32. 1.739 km SW of Ferndale, CaliforniaTue, Jul 4, 11:47 PM PDT · 17618 days ago · 25 km deep · 79 km away
33. 2.334 km SSW of Ferndale, CaliforniaWed, Jul 5, 2:39 AM PDT · 17618 days ago · 25 km deep · 83 km away
34. 1.97 km WNW of Ferndale, CaliforniaWed, Jul 5, 7:03 AM PDT · 17618 days ago · 19 km deep · 68 km away
35. 1.516 km WSW of Ferndale, CaliforniaWed, Jul 5, 3:49 PM PDT · 17618 days ago · 21 km deep · 70 km away
36. 3.087 km WSW of Ferndale, CaliforniaThu, Jul 6, 5:36 AM PDT · 17617 days ago · 6 km deep · 61 km away
37. 2.541 km SW of Ferndale, CaliforniaThu, Jul 6, 5:43 PM PDT · 17617 days ago · 24 km deep · 75 km away
38. 2.9124 km WNW of Ferndale, CaliforniaFri, Jul 7, 8:07 AM PDT · 17616 days ago · 5 km deep · 59 km away
39. 2.731 km SSW of Ferndale, CaliforniaFri, Jul 7, 8:39 PM PDT · 17616 days ago · 11 km deep · 85 km away
40. 2.635 km SW of Ferndale, CaliforniaSun, Jul 9, 9:10 AM PDT · 17614 days ago · 24 km deep · 81 km away
41. 1.8129 km W of Ferndale, CaliforniaSun, Jul 9, 7:22 PM PDT · 17614 days ago · 4 km deep · 86 km away
42. 3.868 km WSW of Ferndale, CaliforniaMon, Jul 10, 11:53 PM PDT · 17612 days ago · 24 km deep · 57 km away
43. 3.269 km WSW of Ferndale, CaliforniaTue, Jul 11, 3:14 AM PDT · 17612 days ago · 21 km deep · 57 km away
44. 2.43 km SSE of Fieldbrook, CaliforniaTue, Jul 11, 10:56 AM PDT · 17612 days ago · 28 km deep · 84 km away
45. 2.55 km NW of Big Lagoon, CaliforniaThu, Jul 13, 11:20 AM PDT · 17610 days ago · 28 km deep · 76 km away
46. 2.022 km SW of Ferndale, CaliforniaFri, Jul 14, 4:26 PM PDT · 17609 days ago · 17 km deep · 70 km away
47. 1.9near the coast of Northern CaliforniaFri, Jul 14, 5:02 PM PDT · 17609 days ago · 29 km deep · 57 km away
48. 3.128 km SSW of Ferndale, CaliforniaSat, Jul 15, 12:24 AM PDT · 17608 days ago · 18 km deep · 83 km away
49. 2.729 km SSW of Ferndale, CaliforniaSat, Jul 15, 1:12 AM PDT · 17608 days ago · 18 km deep · 84 km away
50. 1.920 km ENE of Westhaven-Moonstone, CaliforniaSat, Jul 15, 2:54 AM PDT · 17608 days ago · 22 km deep · 99 km away
51. 2.2123 km W of Ferndale, CaliforniaSat, Jul 15, 6:15 AM PDT · 17608 days ago · 4 km deep · 61 km away
52. 1.759 km WSW of Ferndale, CaliforniaSat, Jul 15, 9:31 AM PDT · 17608 days ago · 28 km deep · 66 km away
53. 1.610 km S of Ferndale, CaliforniaSun, Jul 16, 7:24 PM PDT · 17607 days ago · 18 km deep · 80 km away
54. 2.39 km WSW of Scotia, CaliforniaMon, Jul 17, 1:51 AM PDT · 17606 days ago · 3 km deep · 86 km away
55. 2.99 km WSW of Scotia, CaliforniaMon, Jul 17, 2:53 AM PDT · 17606 days ago · 3 km deep · 86 km away
56. 1.99 km W of Scotia, CaliforniaMon, Jul 17, 3:34 AM PDT · 17606 days ago · 2 km deep · 86 km away
57. 3.010 km S of Ferndale, CaliforniaMon, Jul 17, 3:41 AM PDT · 17606 days ago · 19 km deep · 80 km away
58. 2.99 km WSW of Scotia, CaliforniaMon, Jul 17, 5:04 AM PDT · 17606 days ago · 7 km deep · 86 km away
59. 1.818 km SW of Scotia, CaliforniaMon, Jul 17, 3:30 PM PDT · 17606 days ago · 31 km deep · 92 km away
60. 1.632 km SW of Ferndale, CaliforniaMon, Jul 17, 7:21 PM PDT · 17606 days ago · 17 km deep · 78 km away

The first 60 of 147.

Before

1. 3.535 km SW of Ferndale, CaliforniaMon, Jun 19, 5:50 AM PDT · 17634 days ago · 26 km deep · 82 km away
2. 2.374 km W of Ferndale, CaliforniaSun, Jun 18, 4:55 PM PDT · 17635 days ago · 21 km deep · 40 km away
3. 2.271 km W of Ferndale, CaliforniaSun, Jun 18, 4:15 PM PDT · 17635 days ago · 19 km deep · 41 km away
4. 4.221 km W of Ferndale, CaliforniaSun, Jun 18, 4:05 PM PDT · 17635 days ago · 23 km deep · 61 km away
5. 1.611 km SSW of Ferndale, CaliforniaSun, Jun 18, 7:37 AM PDT · 17635 days ago · 20 km deep · 78 km away
6. 1.614 km SW of Ferndale, CaliforniaSun, Jun 18, 6:54 AM PDT · 17635 days ago · 25 km deep · 76 km away
7. 3.878 km W of Ferndale, CaliforniaSun, Jun 18, 3:56 AM PDT · 17635 days ago · 5 km deep · 33 km away
8. 2.168 km W of Ferndale, CaliforniaSat, Jun 17, 4:30 PM PDT · 17636 days ago · 6 km deep · 50 km away
9. 3.38 km W of Rio Dell, CaliforniaSat, Jun 17, 9:48 AM PDT · 17636 days ago · 20 km deep · 84 km away
10. 2.024 km SW of Ferndale, CaliforniaThu, Jun 15, 12:25 AM PDT · 17638 days ago · 26 km deep · 77 km away
11. 2.332 km SW of Ferndale, CaliforniaTue, Jun 13, 4:51 AM PDT · 17640 days ago · 23 km deep · 79 km away
12. 1.611 km WSW of Scotia, CaliforniaMon, Jun 12, 5:33 PM PDT · 17641 days ago · 19 km deep · 85 km away
13. 1.841 km SSW of Ferndale, CaliforniaMon, Jun 12, 6:48 AM PDT · 17641 days ago · 29 km deep · 85 km away
14. 1.615 km SE of Indianola, CaliforniaMon, Jun 12, 5:04 AM PDT · 17641 days ago · 21 km deep · 93 km away
15. 1.838 km W of Indianola, CaliforniaMon, Jun 12, 3:51 AM PDT · 17641 days ago · 12 km deep · 37 km away
16. 2.429 km SW of Ferndale, CaliforniaSun, Jun 11, 10:12 AM PDT · 17642 days ago · 22 km deep · 78 km away
17. 2.629 km SW of Ferndale, CaliforniaSun, Jun 11, 1:11 AM PDT · 17642 days ago · 19 km deep · 78 km away
18. 1.882 km W of Ferndale, CaliforniaSat, Jun 10, 8:35 PM PDT · 17643 days ago · 4 km deep · 55 km away
19. 1.830 km SW of Ferndale, CaliforniaSat, Jun 10, 2:39 PM PDT · 17643 days ago · 22 km deep · 78 km away
20. 1.824 km WNW of Fields Landing, CaliforniaSat, Jun 10, 5:22 AM PDT · 17643 days ago · 23 km deep · 47 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc1040726. Read Tue, Sep 29, 2026, 3:48 PM UTC.