M2.7 earthquake 13 km WNW of Samoa, California

Magnitude

2.7 (md), micro

Local time

Tue, Jul 4, 1978, 12:42 PM PDT

UTC

1978-07-04 19:42:52 UTC

Depth

22.8 km (14.2 mi), shallow

Epicenter

40.879° N, 124.329° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 1.5 km horizontally, 0.7 km in depth

Depth from

From location

Station coverage gap

242°, poorly surrounded by stations

Stations used

12

• Manila, CaliforniaPopulation 784. Forecast14 kmWNW
• Eureka, CaliforniaPopulation 27,017. Forecast16 kmWNW
• Chico, CaliforniaPopulation 121,345. Forecast247 kmWNW

After

1. 1.739 km SW of Ferndale, CaliforniaTue, Jul 4, 11:47 PM PDT · 17617 days ago · 25 km deep · 67 km away
2. 2.334 km SSW of Ferndale, CaliforniaWed, Jul 5, 2:39 AM PDT · 17617 days ago · 25 km deep · 65 km away
3. 1.97 km WNW of Ferndale, CaliforniaWed, Jul 5, 7:03 AM PDT · 17617 days ago · 19 km deep · 31 km away
4. 1.516 km WSW of Ferndale, CaliforniaWed, Jul 5, 3:49 PM PDT · 17616 days ago · 21 km deep · 43 km away
5. 3.087 km WSW of Ferndale, CaliforniaThu, Jul 6, 5:36 AM PDT · 17616 days ago · 6 km deep · 95 km away
6. 1.811 km NW of Hayfork, CaliforniaThu, Jul 6, 11:18 AM PDT · 17615 days ago · 4 km deep · 92 km away
7. 2.541 km SW of Ferndale, CaliforniaThu, Jul 6, 5:43 PM PDT · 17615 days ago · 24 km deep · 66 km away
8. 2.731 km SSW of Ferndale, CaliforniaFri, Jul 7, 8:39 PM PDT · 17614 days ago · 11 km deep · 63 km away
9. 2.635 km SW of Ferndale, CaliforniaSun, Jul 9, 9:10 AM PDT · 17613 days ago · 24 km deep · 65 km away
10. 3.868 km WSW of Ferndale, CaliforniaMon, Jul 10, 11:53 PM PDT · 17611 days ago · 24 km deep · 79 km away
11. 3.269 km WSW of Ferndale, CaliforniaTue, Jul 11, 3:14 AM PDT · 17611 days ago · 21 km deep · 80 km away
12. 2.43 km SSE of Fieldbrook, CaliforniaTue, Jul 11, 10:56 AM PDT · 17610 days ago · 28 km deep · 26 km away
13. 1.55 km WNW of Weott, CaliforniaWed, Jul 12, 8:45 AM PDT · 17610 days ago · 4 km deep · 66 km away
14. 2.55 km NW of Big Lagoon, CaliforniaThu, Jul 13, 11:20 AM PDT · 17608 days ago · 28 km deep · 37 km away
15. 2.412 km NNE of Redcrest, CAFri, Jul 14, 12:33 AM PDT · 17608 days ago · 22 km deep · 55 km away
16. 2.022 km SW of Ferndale, CaliforniaFri, Jul 14, 4:26 PM PDT · 17607 days ago · 17 km deep · 49 km away
17. 1.9near the coast of Northern CaliforniaFri, Jul 14, 5:02 PM PDT · 17607 days ago · 29 km deep · 38 km away
18. 3.128 km SSW of Ferndale, CaliforniaSat, Jul 15, 12:24 AM PDT · 17607 days ago · 18 km deep · 60 km away
19. 2.729 km SSW of Ferndale, CaliforniaSat, Jul 15, 1:12 AM PDT · 17607 days ago · 18 km deep · 60 km away
20. 1.920 km ENE of Westhaven-Moonstone, CaliforniaSat, Jul 15, 2:54 AM PDT · 17607 days ago · 22 km deep · 46 km away
21. 1.759 km WSW of Ferndale, CaliforniaSat, Jul 15, 9:31 AM PDT · 17607 days ago · 28 km deep · 77 km away
22. 1.610 km S of Ferndale, CaliforniaSun, Jul 16, 7:24 PM PDT · 17605 days ago · 18 km deep · 44 km away
23. 2.39 km WSW of Scotia, CaliforniaMon, Jul 17, 1:51 AM PDT · 17605 days ago · 3 km deep · 47 km away
24. 2.99 km WSW of Scotia, CaliforniaMon, Jul 17, 2:53 AM PDT · 17605 days ago · 3 km deep · 47 km away
25. 1.99 km W of Scotia, CaliforniaMon, Jul 17, 3:34 AM PDT · 17605 days ago · 2 km deep · 47 km away
26. 3.010 km S of Ferndale, CaliforniaMon, Jul 17, 3:41 AM PDT · 17605 days ago · 19 km deep · 44 km away
27. 2.99 km WSW of Scotia, CaliforniaMon, Jul 17, 5:04 AM PDT · 17605 days ago · 7 km deep · 48 km away
28. 1.818 km SW of Scotia, CaliforniaMon, Jul 17, 3:30 PM PDT · 17604 days ago · 31 km deep · 59 km away
29. 1.632 km SW of Ferndale, CaliforniaMon, Jul 17, 7:21 PM PDT · 17604 days ago · 17 km deep · 60 km away
30. 1.771 km WNW of Samoa, CaliforniaTue, Jul 18, 3:38 AM PDT · 17604 days ago · 3 km deep · 59 km away
31. 1.934 km SSW of Ferndale, CaliforniaThu, Jul 20, 3:10 PM PDT · 17601 days ago · -1 km deep · 65 km away
32. 1.846 km WNW of Samoa, CaliforniaThu, Jul 20, 10:49 PM PDT · 17601 days ago · 20 km deep · 33 km away
33. 2.075 km WSW of Ferndale, CaliforniaFri, Jul 21, 4:20 AM PDT · 17601 days ago · 4 km deep · 86 km away
34. 1.633 km SSW of Ferndale, CaliforniaFri, Jul 21, 1:40 PM PDT · 17600 days ago · 25 km deep · 64 km away
35. 1.530 km SW of Ferndale, CaliforniaFri, Jul 21, 7:02 PM PDT · 17600 days ago · 21 km deep · 60 km away
36. 1.8near the coast of Northern CaliforniaSat, Jul 22, 7:25 PM PDT · 17599 days ago · 19 km deep · 65 km away
37. 2.936 km SW of Ferndale, CaliforniaSun, Jul 23, 9:11 AM PDT · 17599 days ago · 21 km deep · 65 km away
38. 1.631 km WSW of Ferndale, CaliforniaSun, Jul 23, 11:19 PM PDT · 17598 days ago · 27 km deep · 52 km away
39. 1.69 km S of Ferndale, CaliforniaMon, Jul 24, 5:16 AM PDT · 17598 days ago · 18 km deep · 44 km away
40. 2.410 km S of Ferndale, CaliforniaMon, Jul 24, 11:28 AM PDT · 17597 days ago · 19 km deep · 44 km away
41. 2.794 km W of Big Lagoon, CaliforniaMon, Jul 24, 11:34 AM PDT · 17597 days ago · 4 km deep · 86 km away
42. 3.279 km WSW of Ferndale, CaliforniaMon, Jul 24, 2:51 PM PDT · 17597 days ago · 5 km deep · 89 km away
43. 2.596 km WNW of Indianola, CaliforniaTue, Jul 25, 4:11 AM PDT · 17597 days ago · 5 km deep · 86 km away
44. 2.368 km WSW of Ferndale, CaliforniaTue, Jul 25, 6:00 AM PDT · 17597 days ago · 7 km deep · 80 km away
45. 1.528 km W of Indianola, CaliforniaTue, Jul 25, 8:25 AM PDT · 17597 days ago · 22 km deep · 29 km away
46. 2.69 km S of Ferndale, CaliforniaTue, Jul 25, 11:14 AM PDT · 17596 days ago · 19 km deep · 44 km away
47. 1.821 km SW of Ferndale, CaliforniaTue, Jul 25, 9:27 PM PDT · 17596 days ago · 18 km deep · 49 km away
48. 1.622 km SW of Ferndale, CaliforniaTue, Jul 25, 9:29 PM PDT · 17596 days ago · 17 km deep · 49 km away
49. 1.522 km SW of Ferndale, CaliforniaTue, Jul 25, 9:38 PM PDT · 17596 days ago · 17 km deep · 50 km away
50. 2.411 km NNE of Redcrest, CaliforniaWed, Jul 26, 2:47 PM PDT · 17595 days ago · 24 km deep · 55 km away
51. 2.387 km WSW of Ferndale, CaliforniaWed, Jul 26, 9:37 PM PDT · 17595 days ago · 4 km deep · 95 km away
52. 2.129 km WNW of Ferndale, CaliforniaThu, Jul 27, 10:59 AM PDT · 17594 days ago · 22 km deep · 33 km away
53. 1.89 km S of Ferndale, CaliforniaThu, Jul 27, 4:31 PM PDT · 17594 days ago · 18 km deep · 44 km away
54. 1.814 km SSW of Ferndale, CaliforniaFri, Jul 28, 10:35 AM PDT · 17594 days ago · 26 km deep · 47 km away
55. 2.122 km WSW of Weott, CaliforniaSat, Jul 29, 11:55 AM PDT · 17592 days ago · 2 km deep · 70 km away
56. 1.632 km SW of Ferndale, CaliforniaMon, Jul 31, 6:02 AM PDT · 17591 days ago · 31 km deep · 60 km away
57. 2.35 km W of Scotia, CaliforniaMon, Jul 31, 5:24 PM PDT · 17590 days ago · 21 km deep · 47 km away
58. 2.96 km SW of Redcrest, CaliforniaTue, Aug 1, 4:23 PM PDT · 17589 days ago · 26 km deep · 63 km away
59. 3.317 km ESE of Blue Lake, CaliforniaTue, Aug 1, 10:32 PM PDT · 17589 days ago · 32 km deep · 45 km away
60. 1.834 km SW of Ferndale, CaliforniaWed, Aug 2, 4:40 AM PDT · 17589 days ago · 25 km deep · 62 km away

The first 60 of 160.

Before

1. 2.56 km SSW of Scotia, CaliforniaTue, Jul 4, 11:50 AM PDT · 17617 days ago · 25 km deep · 53 km away
2. 1.628 km WSW of Ferndale, CaliforniaMon, Jul 3, 10:35 PM PDT · 17618 days ago · 22 km deep · 46 km away
3. 1.725 km SSW of Scotia, CaliforniaMon, Jul 3, 7:11 PM PDT · 17618 days ago · -1 km deep · 66 km away
4. 1.710 km WNW of Manila, CaliforniaMon, Jul 3, 4:22 PM PDT · 17618 days ago · 20 km deep · 4 km away
5. 2.030 km SSW of Ferndale, CaliforniaSun, Jul 2, 8:57 AM PDT · 17620 days ago · 30 km deep · 61 km away
6. 2.436 km SW of Ferndale, CaliforniaSat, Jul 1, 12:03 AM PDT · 17621 days ago · 22 km deep · 64 km away
7. 3.39 km S of Ferndale, CaliforniaFri, Jun 30, 7:58 PM PDT · 17621 days ago · 19 km deep · 44 km away
8. 2.353 km WNW of Big Lagoon, CaliforniaFri, Jun 30, 7:41 PM PDT · 17621 days ago · 4 km deep · 56 km away
9. 1.559 km WSW of Ferndale, CaliforniaFri, Jun 30, 5:13 AM PDT · 17622 days ago · 5 km deep · 72 km away
10. 2.010 km SW of Trinidad, CaliforniaWed, Jun 28, 6:05 PM PDT · 17623 days ago · 23 km deep · 15 km away
11. 2.446 km WNW of Shelter Cove, CaliforniaWed, Jun 28, 2:45 PM PDT · 17623 days ago · 4 km deep · 75 km away
12. 2.221 km WNW of Hyampom, CaliforniaWed, Jun 28, 3:59 AM PDT · 17624 days ago · 25 km deep · 59 km away
13. 1.517 km S of Ferndale, CaliforniaWed, Jun 28, 3:57 AM PDT · 17624 days ago · 20 km deep · 51 km away
14. 1.67 km W of Rio Dell, CaliforniaMon, Jun 26, 2:45 PM PDT · 17625 days ago · 19 km deep · 44 km away
15. 2.735 km SW of Ferndale, CaliforniaMon, Jun 26, 11:59 AM PDT · 17625 days ago · 27 km deep · 64 km away
16. 2.525 km SSW of Ferndale, CaliforniaMon, Jun 26, 10:54 AM PDT · 17625 days ago · 24 km deep · 56 km away
17. 2.823 km W of Samoa, CaliforniaMon, Jun 26, 7:14 AM PDT · 17626 days ago · 23 km deep · 13 km away
18. 2.116 km WSW of Scotia, CaliforniaMon, Jun 26, 5:19 AM PDT · 17626 days ago · 20 km deep · 51 km away
19. 3.132 km SSW of Ferndale, CaliforniaMon, Jun 26, 4:10 AM PDT · 17626 days ago · 26 km deep · 62 km away
20. 1.67 km WSW of Rio Dell, CaliforniaSun, Jun 25, 8:57 PM PDT · 17626 days ago · 28 km deep · 46 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc1040917. Read Mon, Sep 28, 2026, 5:20 AM UTC.