M2.9 earthquake 30 km WNW of Samoa, California

Magnitude

2.9 (Md, duration), micro

Magnitude from

Northern California Seismic System

Local time

Wed, Jul 27, 1977, 6:41 AM PDT

UTC

1977-07-27 13:41:44 UTC

Depth

23.1 km (14.4 mi), shallow

Epicenter

40.876° N, 124.541° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 2.6 km horizontally, 1.5 km in depth

Depth from

From location

Station coverage gap

280°, poorly surrounded by stations

Stations used

11

• Manila, CaliforniaPopulation 784. Forecast32 kmW
• Eureka, CaliforniaPopulation 27,017. Forecast33 kmWNW
• Chico, CaliforniaPopulation 121,345. Forecast262 kmWNW

After

1. 2.117 km SW of Burnt Ranch, CaliforniaThu, Jul 28, 2:20 AM PDT · 17963 days ago · 4 km deep · 79 km away
2. 3.050 km SW of Ferndale, CaliforniaThu, Jul 28, 9:58 AM PDT · 17962 days ago · 9 km deep · 67 km away
3. 2.51 km NW of Humboldt Hill, CaliforniaFri, Jul 29, 1:31 AM PDT · 17962 days ago · 10 km deep · 33 km away
4. 1.725 km SW of Ferndale, CaliforniaFri, Jul 29, 6:01 PM PDT · 17961 days ago · 22 km deep · 55 km away
5. 2.510 km S of Ferndale, CaliforniaSun, Jul 31, 3:17 PM PDT · 17959 days ago · 3 km deep · 51 km away
6. 1.610 km SSE of Ferndale, CaliforniaSun, Jul 31, 4:12 PM PDT · 17959 days ago · 3 km deep · 51 km away
7. 2.410 km SSE of Ferndale, CaliforniaSun, Jul 31, 5:11 PM PDT · 17959 days ago · 3 km deep · 51 km away
8. 1.911 km SSE of Ferndale, CaliforniaSun, Jul 31, 6:25 PM PDT · 17959 days ago · 2 km deep · 51 km away
9. 2.610 km SSE of Ferndale, CaliforniaSun, Jul 31, 7:28 PM PDT · 17959 days ago · 3 km deep · 51 km away
10. 2.010 km SSE of Ferndale, CaliforniaSun, Jul 31, 8:51 PM PDT · 17959 days ago · 4 km deep · 50 km away
11. 3.949 km WSW of Ferndale, CaliforniaMon, Aug 1, 1:58 PM PDT · 17958 days ago · 24 km deep · 51 km away
12. 2.215 km S of Ferndale, CaliforniaTue, Aug 2, 2:07 PM PDT · 17957 days ago · 20 km deep · 54 km away
13. 2.792 km W of Big Lagoon, CaliforniaThu, Aug 4, 3:51 PM PDT · 17955 days ago · 5 km deep · 69 km away
14. 1.633 km SSW of Ferndale, CaliforniaFri, Aug 5, 6:16 AM PDT · 17954 days ago · 14 km deep · 62 km away
15. 1.843 km SW of Ferndale, CaliforniaSat, Aug 6, 10:17 AM PDT · 17953 days ago · 11 km deep · 66 km away
16. 1.828 km SW of Ferndale, CaliforniaSat, Aug 6, 3:14 PM PDT · 17953 days ago · 27 km deep · 54 km away
17. 2.418 km SW of Scotia, CaliforniaSun, Aug 7, 9:53 PM PDT · 17952 days ago · 30 km deep · 64 km away
18. 2.512 km NE of Miranda, CaliforniaTue, Aug 9, 12:54 PM PDT · 17950 days ago · 30 km deep · 94 km away
19. 3.532 km W of Ferndale, CaliforniaWed, Aug 10, 2:25 AM PDT · 17950 days ago · 22 km deep · 40 km away
20. 2.380 km W of Trinidad, CaliforniaFri, Aug 12, 1:06 AM PDT · 17948 days ago · 6 km deep · 52 km away
21. 2.110 km SSE of Ferndale, CaliforniaFri, Aug 12, 10:53 AM PDT · 17947 days ago · 3 km deep · 50 km away
22. 2.5near the coast of Northern CaliforniaFri, Aug 12, 7:21 PM PDT · 17947 days ago · 7 km deep · 73 km away
23. 3.033 km NW of Shelter Cove, CaliforniaFri, Aug 12, 7:36 PM PDT · 17947 days ago · 9 km deep · 74 km away
24. 2.732 km NW of Shelter Cove, CaliforniaFri, Aug 12, 9:56 PM PDT · 17947 days ago · 7 km deep · 74 km away
25. 1.625 km SW of Scotia, CaliforniaFri, Aug 12, 11:54 PM PDT · 17947 days ago · 6 km deep · 68 km away
26. 1.826 km SW of Scotia, CaliforniaSat, Aug 13, 1:45 AM PDT · 17947 days ago · 6 km deep · 68 km away
27. 2.127 km SW of Scotia, CaliforniaSat, Aug 13, 2:01 AM PDT · 17947 days ago · 7 km deep · 69 km away
28. 1.67 km W of Samoa, CaliforniaSat, Aug 13, 2:25 AM PDT · 17947 days ago · 23 km deep · 23 km away
29. 2.332 km NW of Shelter Cove, CaliforniaSat, Aug 13, 5:32 AM PDT · 17946 days ago · 8 km deep · 72 km away
30. 3.2near the coast of Northern CaliforniaSat, Aug 13, 12:09 PM PDT · 17946 days ago · 8 km deep · 73 km away
31. 2.431 km SW of Scotia, CaliforniaSat, Aug 13, 12:13 PM PDT · 17946 days ago · 8 km deep · 71 km away
32. 2.9near the coast of Northern CaliforniaSat, Aug 13, 11:23 PM PDT · 17946 days ago · 24 km deep · 42 km away
33. 1.75 km SSE of Indianola, CaliforniaSat, Aug 13, 11:27 PM PDT · 17946 days ago · 24 km deep · 42 km away
34. 1.618 km SW of Scotia, CaliforniaSun, Aug 14, 6:10 AM PDT · 17945 days ago · 29 km deep · 61 km away
35. 1.520 km SW of Ferndale, CaliforniaMon, Aug 15, 4:13 AM PDT · 17945 days ago · 26 km deep · 49 km away
36. 3.132 km NW of Shelter Cove, CaliforniaMon, Aug 15, 7:14 PM PDT · 17944 days ago · 7 km deep · 75 km away
37. 1.824 km SW of Scotia, CaliforniaMon, Aug 15, 7:17 PM PDT · 17944 days ago · 5 km deep · 68 km away
38. 1.627 km SW of Scotia, CaliforniaMon, Aug 15, 8:06 PM PDT · 17944 days ago · 6 km deep · 69 km away
39. 2.432 km NW of Shelter Cove, CaliforniaMon, Aug 15, 8:57 PM PDT · 17944 days ago · 7 km deep · 73 km away
40. 2.821 km SW of Ferndale, CaliforniaTue, Aug 16, 1:20 AM PDT · 17944 days ago · 23 km deep · 49 km away
41. 2.010 km SSE of Ferndale, CaliforniaWed, Aug 17, 3:55 AM PDT · 17943 days ago · 3 km deep · 51 km away
42. 2.415 km SW of Scotia, CaliforniaThu, Aug 18, 2:09 AM PDT · 17942 days ago · 21 km deep · 61 km away
43. 2.227 km SSW of Ferndale, CaliforniaThu, Aug 18, 1:31 PM PDT · 17941 days ago · 22 km deep · 58 km away
44. 1.824 km SW of Ferndale, CaliforniaThu, Aug 18, 3:18 PM PDT · 17941 days ago · 23 km deep · 55 km away
45. 2.311 km NE of Phillipsville, CaliforniaThu, Aug 18, 8:36 PM PDT · 17941 days ago · 30 km deep · 98 km away
46. 1.963 km W of Ferndale, CaliforniaFri, Aug 19, 5:37 AM PDT · 17940 days ago · 11 km deep · 54 km away
47. 3.474 km W of Ferndale, CaliforniaFri, Aug 19, 6:51 PM PDT · 17940 days ago · 10 km deep · 68 km away
48. 1.831 km W of Ferndale, CaliforniaFri, Aug 19, 11:37 PM PDT · 17940 days ago · 27 km deep · 37 km away
49. 1.529 km WSW of Ferndale, CASat, Aug 20, 9:35 AM PDT · 17939 days ago · 21 km deep · 40 km away
50. 1.928 km WSW of Ferndale, CaliforniaSat, Aug 20, 10:33 AM PDT · 17939 days ago · 16 km deep · 40 km away
51. 1.913 km WSW of Redcrest, CaliforniaSat, Aug 20, 5:58 PM PDT · 17939 days ago · 32 km deep · 72 km away
52. 1.725 km SW of Ferndale, CaliforniaSat, Aug 20, 6:54 PM PDT · 17939 days ago · 18 km deep · 54 km away
53. 1.531 km WSW of Ferndale, CaliforniaSat, Aug 20, 10:09 PM PDT · 17939 days ago · 15 km deep · 40 km away
54. 2.111 km ENE of Westhaven-Moonstone, CaliforniaMon, Aug 22, 12:55 PM PDT · 17937 days ago · 23 km deep · 53 km away
55. 1.618 km NNE of Redcrest, CaliforniaMon, Aug 22, 4:09 PM PDT · 17937 days ago · 24 km deep · 69 km away
56. 3.167 km W of Ferndale, CaliforniaTue, Aug 23, 4:42 AM PDT · 17937 days ago · 2 km deep · 50 km away
57. 2.01 km SW of Indianola, CaliforniaFri, Aug 26, 3:13 AM PDT · 17934 days ago · 9 km deep · 33 km away
58. 1.9near the coast of Northern CaliforniaFri, Aug 26, 3:13 AM PDT · 17934 days ago · 8 km deep · 33 km away
59. 1.91 km WSW of Indianola, CaliforniaFri, Aug 26, 3:53 AM PDT · 17934 days ago · 8 km deep · 33 km away
60. 1.51 km WSW of Indianola, CaliforniaFri, Aug 26, 7:05 PM PDT · 17933 days ago · 9 km deep · 33 km away

The first 60 of 92.

Before

1. 2.631 km WSW of Ferndale, CaliforniaTue, Jul 26, 5:25 PM PDT · 17964 days ago · 21 km deep · 41 km away
2. 2.115 km SW of Scotia, CaliforniaTue, Jul 26, 1:55 PM PDT · 17964 days ago · 21 km deep · 60 km away
3. 2.413 km NNE of Redcrest, CaliforniaTue, Jul 26, 5:52 AM PDT · 17964 days ago · 24 km deep · 70 km away
4. 1.725 km WNW of Samoa, CaliforniaMon, Jul 25, 9:55 PM PDT · 17965 days ago · 20 km deep · 6 km away
5. 2.141 km SW of Ferndale, CaliforniaMon, Jul 25, 2:18 PM PDT · 17965 days ago · 13 km deep · 62 km away
6. 1.952 km W of Ferndale, CaliforniaSat, Jul 23, 10:49 PM PDT · 17967 days ago · 7 km deep · 38 km away
7. 2.19 km NE of Willow Creek, CaliforniaSat, Jul 23, 6:03 PM PDT · 17967 days ago · 30 km deep · 84 km away
8. 3.738 km W of Big Lagoon, CaliforniaSat, Jul 23, 4:48 PM PDT · 17967 days ago · 12 km deep · 32 km away
9. 1.57 km WSW of Weott, CaliforniaSat, Jul 23, 10:10 AM PDT · 17967 days ago · 29 km deep · 79 km away
10. 2.328 km WSW of Ferndale, CaliforniaThu, Jul 21, 5:14 PM PDT · 17969 days ago · 24 km deep · 42 km away
11. 2.634 km SW of Ferndale, CaliforniaThu, Jul 21, 2:25 PM PDT · 17969 days ago · 29 km deep · 61 km away
12. 1.516 km SW of Scotia, CaliforniaThu, Jul 21, 1:48 PM PDT · 17969 days ago · 23 km deep · 61 km away
13. 2.61 km E of Willow Creek, CaliforniaThu, Jul 21, 3:21 AM PDT · 17970 days ago · 27 km deep · 79 km away
14. 1.515 km ESE of Blue Lake, CaliforniaTue, Jul 19, 2:13 PM PDT · 17971 days ago · 24 km deep · 61 km away
15. 1.63 km WNW of Ferndale, CaliforniaTue, Jul 19, 3:51 AM PDT · 17972 days ago · 21 km deep · 37 km away
16. 2.167 km W of Ferndale, CaliforniaMon, Jul 18, 5:56 PM PDT · 17972 days ago · 10 km deep · 61 km away
17. 3.871 km W of Ferndale, CaliforniaMon, Jul 18, 2:51 PM PDT · 17972 days ago · 2 km deep · 66 km away
18. 4.773 km W of Ferndale, CaliforniaMon, Jul 18, 2:49 PM PDT · 17972 days ago · 9 km deep · 67 km away
19. 1.528 km SW of Scotia, CaliforniaSun, Jul 17, 7:35 PM PDT · 17973 days ago · 6 km deep · 70 km away
20. 3.039 km WSW of Ferndale, CaliforniaSat, Jul 16, 5:22 AM PDT · 17974 days ago · 26 km deep · 56 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc1035994. Read Thu, Oct 1, 2026, 11:45 PM UTC.