M1.7 earthquake 40 km WSW of Ferndale, California

Magnitude

1.7 (Md, duration), micro

Magnitude from

Northern California Seismic System

Local time

Fri, May 18, 1979, 10:25 AM PDT

UTC

1979-05-18 17:25:55 UTC

Depth

14.5 km (9.0 mi), shallow

Epicenter

40.424° N, 124.693° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 2.0 km horizontally, 1.4 km in depth

Magnitude uncertainty

±0.05

Depth from

From location

Station coverage gap

275°, poorly surrounded by stations

Stations used

7

• Ferndale, CaliforniaPopulation 1,369. Forecast40 kmWSW
• Fortuna, CaliforniaPopulation 12,000. Forecast49 kmWSW
• Chico, CaliforniaPopulation 121,345. Forecast255 kmWNW

After

1. 1.68 km W of Rio Dell, CaliforniaFri, May 18, 3:44 PM PDT · 17304 days ago · 18 km deep · 42 km away
2. 1.626 km SW of Scotia, CaliforniaSat, May 19, 1:35 AM PDT · 17304 days ago · 25 km deep · 30 km away
3. 1.833 km SW of Scotia, CaliforniaSat, May 19, 5:43 AM PDT · 17303 days ago · 22 km deep · 28 km away
4. 1.67 km W of Rio Dell, CaliforniaSat, May 19, 10:03 AM PDT · 17303 days ago · 17 km deep · 43 km away
5. 1.77 km W of Rio Dell, CaliforniaSat, May 19, 12:59 PM PDT · 17303 days ago · 18 km deep · 43 km away
6. 1.510 km WSW of Scotia, CaliforniaSat, May 19, 8:31 PM PDT · 17303 days ago · 19 km deep · 41 km away
7. 1.938 km SW of Ferndale, CaliforniaSun, May 20, 1:25 PM PDT · 17302 days ago · 20 km deep · 19 km away
8. 1.836 km SW of Ferndale, CaliforniaSun, May 20, 7:22 PM PDT · 17302 days ago · 27 km deep · 20 km away
9. 2.233 km WSW of Ferndale, CaliforniaMon, May 21, 1:42 PM PDT · 17301 days ago · 21 km deep · 10 km away
10. 2.135 km SSW of Ferndale, CaliforniaTue, May 22, 12:44 AM PDT · 17301 days ago · 25 km deep · 22 km away
11. 1.730 km SW of Scotia, CaliforniaTue, May 22, 8:12 PM PDT · 17300 days ago · 7 km deep · 31 km away
12. 1.67 km W of Rio Dell, CaliforniaWed, May 23, 6:11 PM PDT · 17299 days ago · 17 km deep · 43 km away
13. 1.64 km NW of Ferndale, CaliforniaWed, May 23, 9:56 PM PDT · 17299 days ago · 18 km deep · 38 km away
14. 1.99 km W of Scotia, CaliforniaThu, May 24, 7:12 AM PDT · 17298 days ago · 21 km deep · 41 km away
15. 1.970 km W of Indianola, CaliforniaFri, May 25, 8:42 AM PDT · 17297 days ago · 6 km deep · 50 km away
16. 1.850 km WNW of Samoa, CaliforniaFri, May 25, 12:31 PM PDT · 17297 days ago · 13 km deep · 57 km away
17. 1.72 km NE of Rio Dell, CaliforniaFri, May 25, 4:24 PM PDT · 17297 days ago · 22 km deep · 53 km away
18. 1.614 km ESE of Indianola, CaliforniaFri, May 25, 5:00 PM PDT · 17297 days ago · 20 km deep · 73 km away
19. 1.88 km WSW of Trinidad, CaliforniaFri, May 25, 9:07 PM PDT · 17297 days ago · 20 km deep · 78 km away
20. 1.836 km SSW of Ferndale, CaliforniaFri, May 25, 9:25 PM PDT · 17297 days ago · 22 km deep · 22 km away
21. 1.635 km SSW of Ferndale, CaliforniaSat, May 26, 12:17 AM PDT · 17297 days ago · 23 km deep · 24 km away
22. 1.839 km SW of Ferndale, CaliforniaSat, May 26, 3:30 AM PDT · 17296 days ago · 21 km deep · 18 km away
23. 2.865 km W of Ferndale, CaliforniaSun, May 27, 11:17 AM PDT · 17295 days ago · 31 km deep · 36 km away
24. 1.973 km WNW of Samoa, CaliforniaSun, May 27, 8:52 PM PDT · 17295 days ago · 5 km deep · 69 km away
25. 3.985 km WNW of Samoa, CaliforniaSun, May 27, 9:12 PM PDT · 17295 days ago · 3 km deep · 76 km away
26. 1.711 km S of Scotia, CaliforniaMon, May 28, 6:56 AM PDT · 17294 days ago · 19 km deep · 49 km away
27. 1.611 km NE of Miranda, CaliforniaMon, May 28, 1:55 PM PDT · 17294 days ago · 24 km deep · 81 km away
28. 2.292 km WSW of Ferndale, CaliforniaMon, May 28, 4:52 PM PDT · 17294 days ago · 5 km deep · 54 km away
29. 1.741 km WNW of Samoa, CaliforniaTue, May 29, 5:54 AM PDT · 17293 days ago · 14 km deep · 59 km away
30. 2.224 km WNW of Indianola, CaliforniaTue, May 29, 10:36 AM PDT · 17293 days ago · 23 km deep · 43 km away
31. 1.941 km SW of Ferndale, CaliforniaThu, May 31, 1:14 AM PDT · 17292 days ago · 0 km deep · 20 km away
32. 1.843 km WNW of Samoa, CaliforniaSat, Jun 2, 1:22 PM PDT · 17289 days ago · 23 km deep · 55 km away
33. 3.227 km SSW of Ferndale, CaliforniaSat, Jun 2, 9:07 PM PDT · 17289 days ago · 18 km deep · 25 km away
34. 2.178 km WNW of Samoa, CaliforniaSat, Jun 2, 10:16 PM PDT · 17289 days ago · 3 km deep · 69 km away
35. 1.924 km SW of Scotia, CaliforniaSun, Jun 3, 12:38 AM PDT · 17289 days ago · 28 km deep · 33 km away
36. 1.626 km W of Indianola, CaliforniaSun, Jun 3, 1:01 AM PDT · 17289 days ago · 22 km deep · 31 km away
37. 2.39 km ESE of Hydesville, CaliforniaSun, Jun 3, 10:29 PM PDT · 17288 days ago · 20 km deep · 60 km away
38. 2.632 km SW of Scotia, CaliforniaMon, Jun 4, 8:35 PM PDT · 17287 days ago · 18 km deep · 30 km away
39. 2.764 km WNW of Indianola, CaliforniaMon, Jun 4, 8:55 PM PDT · 17287 days ago · 13 km deep · 55 km away
40. 1.63 km NW of Fortuna, CaliforniaTue, Jun 5, 9:21 PM PDT · 17286 days ago · 22 km deep · 47 km away
41. 1.647 km SW of Ferndale, CaliforniaWed, Jun 6, 7:04 AM PDT · 17285 days ago · 12 km deep · 12 km away
42. 2.67 km E of Pine Hills, CaliforniaThu, Jun 7, 10:45 AM PDT · 17284 days ago · 24 km deep · 63 km away
43. 1.913 km SW of Ferndale, CaliforniaFri, Jun 8, 3:18 AM PDT · 17283 days ago · 23 km deep · 27 km away
44. 1.733 km SSW of Ferndale, CaliforniaFri, Jun 8, 5:45 AM PDT · 17283 days ago · 18 km deep · 21 km away
45. 1.735 km SSW of Ferndale, CaliforniaFri, Jun 8, 5:21 PM PDT · 17283 days ago · 21 km deep · 24 km away
46. 2.070 km WSW of Ferndale, CaliforniaSat, Jun 9, 12:00 AM PDT · 17283 days ago · 5 km deep · 31 km away
47. 2.237 km SW of Ferndale, CaliforniaSat, Jun 9, 12:43 AM PDT · 17283 days ago · 31 km deep · 19 km away
48. 1.930 km SW of Ferndale, CaliforniaSat, Jun 9, 10:37 AM PDT · 17282 days ago · 27 km deep · 14 km away
49. 1.837 km W of Ferndale, CaliforniaSat, Jun 9, 6:01 PM PDT · 17282 days ago · 21 km deep · 10 km away
50. 1.635 km SW of Ferndale, CaliforniaSat, Jun 9, 6:12 PM PDT · 17282 days ago · 20 km deep · 19 km away
51. 1.60 km WSW of Benbow, CaliforniaSat, Jun 9, 7:53 PM PDT · 17282 days ago · -1 km deep · 86 km away
52. 1.729 km SW of Ferndale, CaliforniaSun, Jun 10, 12:05 PM PDT · 17281 days ago · 18 km deep · 16 km away
53. 1.75 km E of Garberville, CaliforniaSun, Jun 10, 1:49 PM PDT · 17281 days ago · 18 km deep · 89 km away
54. 1.732 km WSW of Ferndale, CaliforniaSun, Jun 10, 10:19 PM PDT · 17281 days ago · 27 km deep · 9 km away
55. 1.65 km WNW of Loleta, CaliforniaSun, Jun 10, 11:35 PM PDT · 17281 days ago · 22 km deep · 44 km away
56. 1.836 km WSW of Ferndale, CaliforniaTue, Jun 12, 11:14 AM PDT · 17279 days ago · 25 km deep · 4 km away
57. 2.864 km WSW of Ferndale, CaliforniaTue, Jun 12, 5:10 PM PDT · 17279 days ago · 21 km deep · 27 km away
58. 1.927 km SW of Ferndale, CaliforniaTue, Jun 12, 7:43 PM PDT · 17279 days ago · 24 km deep · 21 km away
59. 3.136 km SW of Ferndale, CaliforniaWed, Jun 13, 5:25 PM PDT · 17278 days ago · 23 km deep · 16 km away
60. 1.98 km SE of Benbow, CaliforniaThu, Jun 14, 2:04 AM PDT · 17277 days ago · 1 km deep · 94 km away

The first 60 of 141.

Before

1. 1.82 km SSW of Scotia, CaliforniaFri, May 18, 8:06 AM PDT · 17304 days ago · 20 km deep · 50 km away
2. 3.239 km SW of Ferndale, CaliforniaFri, May 18, 12:31 AM PDT · 17305 days ago · 23 km deep · 14 km away
3. 2.938 km SW of Ferndale, CaliforniaThu, May 17, 8:18 PM PDT · 17305 days ago · 23 km deep · 15 km away
4. 1.510 km SSE of Ferndale, CaliforniaThu, May 17, 5:56 PM PDT · 17305 days ago · 21 km deep · 40 km away
5. 1.77 km W of Rio Dell, CaliforniaThu, May 17, 5:53 PM PDT · 17305 days ago · 18 km deep · 43 km away
6. 2.234 km WSW of Ferndale, CaliforniaThu, May 17, 8:05 AM PDT · 17305 days ago · 21 km deep · 9 km away
7. 2.0110 km WSW of Ferndale, CaliforniaThu, May 17, 2:39 AM PDT · 17305 days ago · 4 km deep · 72 km away
8. 1.98 km W of McKinleyville, CaliforniaWed, May 16, 7:51 AM PDT · 17306 days ago · 1 km deep · 73 km away
9. 1.619 km SW of Ferndale, CaliforniaWed, May 16, 3:55 AM PDT · 17306 days ago · 19 km deep · 21 km away
10. 1.913 km SE of Blue Lake, CaliforniaTue, May 15, 7:49 PM PDT · 17307 days ago · 22 km deep · 81 km away
11. 1.68 km SW of Ferndale, CaliforniaTue, May 15, 12:37 PM PDT · 17307 days ago · 22 km deep · 32 km away
12. 1.786 km WSW of Ferndale, CaliforniaTue, May 15, 1:11 AM PDT · 17308 days ago · 4 km deep · 48 km away
13. 3.4129 km W of Ferndale, CaliforniaTue, May 15, 12:13 AM PDT · 17308 days ago · 5 km deep · 95 km away
14. 1.620 km WSW of Ferndale, CaliforniaMon, May 14, 10:53 PM PDT · 17308 days ago · 16 km deep · 20 km away
15. 2.626 km SSW of Ferndale, CaliforniaMon, May 14, 9:56 PM PDT · 17308 days ago · 18 km deep · 22 km away
16. 1.715 km WSW of Ferndale, CaliforniaMon, May 14, 9:52 PM PDT · 17308 days ago · 15 km deep · 25 km away
17. 2.216 km WSW of Ferndale, CaliforniaMon, May 14, 9:49 PM PDT · 17308 days ago · 17 km deep · 24 km away
18. 2.516 km WSW of Ferndale, CaliforniaMon, May 14, 9:43 PM PDT · 17308 days ago · 17 km deep · 24 km away
19. 2.238 km W of Ferndale, CaliforniaMon, May 14, 7:23 AM PDT · 17308 days ago · 20 km deep · 17 km away
20. 1.78 km WSW of Scotia, CaliforniaMon, May 14, 4:39 AM PDT · 17308 days ago · 27 km deep · 43 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc1045849. Read Fri, Oct 2, 2026, 8:15 PM UTC.