M1.8 earthquake 12 km WSW of Redcrest, California

Magnitude

1.8 (Md, duration), micro

Magnitude from

Northern California Seismic System

Local time

Sat, Oct 20, 1979, 12:04 PM PDT

UTC

1979-10-20 19:04:34 UTC

Depth

28.8 km (17.9 mi), shallow

Epicenter

40.350° N, 124.080° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 1.2 km horizontally, 1.9 km in depth

Depth from

From location

Station coverage gap

190°, poorly surrounded by stations

Stations used

8

• Scotia, CaliforniaPopulation 850. Forecast15 kmS
• Fortuna, CaliforniaPopulation 12,000. Forecast28 kmSSE
• Chico, CaliforniaPopulation 121,345. Forecast203 kmWNW
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast870 kmNW

After

1. 3.664 km WSW of Ferndale, CaliforniaSun, Oct 21, 4:34 AM PDT · 17148 days ago · 28 km deep · 78 km away
2. 1.925 km SSW of Ferndale, CaliforniaSun, Oct 21, 7:10 PM PDT · 17148 days ago · 16 km deep · 23 km away
3. 4.030 km S of Shelter Cove, CaliforniaTue, Oct 23, 3:55 AM PDT · 17146 days ago · 6 km deep · 66 km away
4. 1.928 km WSW of Ferndale, CaliforniaTue, Oct 23, 9:05 PM PDT · 17146 days ago · 22 km deep · 44 km away
5. 2.238 km WSW of Ferndale, CaliforniaTue, Oct 23, 11:07 PM PDT · 17146 days ago · 23 km deep · 54 km away
6. 1.918 km W of Samoa, CaliforniaWed, Oct 24, 5:54 AM PDT · 17145 days ago · 24 km deep · 60 km away
7. 2.36 km SW of Scotia, CaliforniaWed, Oct 24, 6:23 AM PDT · 17145 days ago · 22 km deep · 12 km away
8. 2.630 km WSW of Ferndale, CaliforniaWed, Oct 24, 8:19 AM PDT · 17145 days ago · 22 km deep · 47 km away
9. 4.534 km WSW of Ferndale, CaliforniaWed, Oct 24, 8:23 AM PDT · 17145 days ago · 26 km deep · 50 km away
10. 2.534 km WSW of Ferndale, CaliforniaWed, Oct 24, 8:39 AM PDT · 17145 days ago · 26 km deep · 53 km away
11. 2.830 km WNW of Ferndale, CaliforniaWed, Oct 24, 8:43 AM PDT · 17145 days ago · 23 km deep · 56 km away
12. 1.934 km WSW of Ferndale, CaliforniaWed, Oct 24, 8:55 AM PDT · 17145 days ago · 28 km deep · 53 km away
13. 1.732 km SW of Ferndale, CaliforniaWed, Oct 24, 9:02 AM PDT · 17145 days ago · 27 km deep · 43 km away
14. 1.732 km WSW of Ferndale, CaliforniaWed, Oct 24, 9:11 AM PDT · 17145 days ago · 28 km deep · 46 km away
15. 1.935 km WSW of Ferndale, CaliforniaWed, Oct 24, 9:23 AM PDT · 17145 days ago · 21 km deep · 50 km away
16. 1.938 km W of Ferndale, CaliforniaWed, Oct 24, 9:57 AM PDT · 17145 days ago · 21 km deep · 58 km away
17. 2.029 km WSW of Ferndale, CaliforniaWed, Oct 24, 11:04 AM PDT · 17145 days ago · 23 km deep · 47 km away
18. 1.735 km WSW of Ferndale, CaliforniaWed, Oct 24, 2:20 PM PDT · 17145 days ago · 19 km deep · 52 km away
19. 1.626 km W of Ferndale, CaliforniaWed, Oct 24, 2:58 PM PDT · 17145 days ago · 22 km deep · 47 km away
20. 4.034 km WSW of Ferndale, CaliforniaThu, Oct 25, 2:01 AM PDT · 17145 days ago · 25 km deep · 49 km away
21. 1.834 km WSW of Ferndale, CaliforniaThu, Oct 25, 3:37 AM PDT · 17144 days ago · 25 km deep · 48 km away
22. 1.742 km W of Ferndale, CaliforniaThu, Oct 25, 5:09 AM PDT · 17144 days ago · 19 km deep · 65 km away
23. 1.612 km E of Hydesville, CaliforniaThu, Oct 25, 5:27 AM PDT · 17144 days ago · 3 km deep · 24 km away
24. 1.935 km W of Ferndale, CaliforniaThu, Oct 25, 6:01 AM PDT · 17144 days ago · 26 km deep · 54 km away
25. 1.7near the coast of Northern CaliforniaThu, Oct 25, 2:49 PM PDT · 17144 days ago · 20 km deep · 49 km away
26. 1.544 km W of Ferndale, CaliforniaThu, Oct 25, 3:38 PM PDT · 17144 days ago · 20 km deep · 65 km away
27. 1.956 km WNW of Ferndale, CaliforniaThu, Oct 25, 9:04 PM PDT · 17144 days ago · 29 km deep · 80 km away
28. 1.650 km W of Indianola, CaliforniaFri, Oct 26, 12:14 AM PDT · 17144 days ago · 6 km deep · 77 km away
29. 2.731 km WSW of Ferndale, CaliforniaFri, Oct 26, 9:23 AM PDT · 17143 days ago · 22 km deep · 46 km away
30. 1.535 km SSW of Ferndale, CaliforniaSat, Oct 27, 4:24 AM PDT · 17142 days ago · 20 km deep · 35 km away
31. 1.76 km SSE of Ferndale, CaliforniaSun, Oct 28, 2:17 PM PST · 17141 days ago · 9 km deep · 23 km away
32. 1.627 km WNW of Shelter Cove, CaliforniaSun, Oct 28, 8:16 PM PST · 17141 days ago · 1 km deep · 31 km away
33. 2.945 km W of Ferndale, CaliforniaMon, Oct 29, 6:37 AM PST · 17140 days ago · 24 km deep · 64 km away
34. 1.754 km WSW of Ferndale, CaliforniaMon, Oct 29, 7:05 AM PST · 17140 days ago · 25 km deep · 63 km away
35. 1.811 km N of Alderpoint, CaliforniaMon, Oct 29, 7:06 PM PST · 17140 days ago · 26 km deep · 43 km away
36. 1.840 km W of Ferndale, CaliforniaTue, Oct 30, 3:55 AM PST · 17139 days ago · 24 km deep · 62 km away
37. 1.637 km SW of Ferndale, CaliforniaTue, Oct 30, 5:39 AM PST · 17139 days ago · 7 km deep · 37 km away
38. 1.912 km NNW of Hayfork, CaliforniaTue, Oct 30, 8:42 AM PST · 17139 days ago · 29 km deep · 79 km away
39. 1.640 km W of Ferndale, CaliforniaTue, Oct 30, 7:35 PM PST · 17139 days ago · 21 km deep · 60 km away
40. 1.93 km NNE of Hydesville, CaliforniaWed, Oct 31, 7:48 PM PST · 17138 days ago · 18 km deep · 26 km away
41. 1.622 km ENE of Hydesville, CaliforniaFri, Nov 2, 1:28 AM PST · 17136 days ago · 22 km deep · 35 km away
42. 1.935 km WSW of Ferndale, CaliforniaFri, Nov 2, 8:01 AM PST · 17136 days ago · 25 km deep · 53 km away
43. 2.610 km SE of Laytonville, CaliforniaFri, Nov 2, 8:44 PM PST · 17136 days ago · -1 km deep · 100 km away
44. 3.07 km WSW of Mad River, CaliforniaFri, Nov 2, 9:46 PM PST · 17136 days ago · 30 km deep · 42 km away
45. 1.89 km WSW of Mad River, CaliforniaFri, Nov 2, 10:27 PM PST · 17136 days ago · 27 km deep · 41 km away
46. 2.662 km WSW of Ferndale, CaliforniaSat, Nov 3, 12:43 AM PST · 17136 days ago · 55 km deep · 74 km away
47. 2.853 km W of Ferndale, CaliforniaSat, Nov 3, 7:52 PM PST · 17135 days ago · 26 km deep · 74 km away
48. 1.611 km SW of Ferndale, CaliforniaSun, Nov 4, 12:17 PM PST · 17134 days ago · 24 km deep · 31 km away
49. 1.87 km SSE of Scotia, CaliforniaSun, Nov 4, 2:17 PM PST · 17134 days ago · 22 km deep · 7 km away
50. 1.925 km SSW of Ferndale, CaliforniaMon, Nov 5, 12:59 PM PST · 17133 days ago · 30 km deep · 27 km away
51. 3.342 km SW of Ferndale, CaliforniaTue, Nov 6, 11:58 PM PST · 17132 days ago · 11 km deep · 48 km away
52. 1.760 km WNW of Samoa, CaliforniaThu, Nov 8, 1:26 AM PST · 17130 days ago · 15 km deep · 94 km away
53. 1.915 km WSW of Trinidad, CaliforniaFri, Nov 9, 2:09 PM PST · 17129 days ago · 20 km deep · 77 km away
54. 1.98 km SE of Blue Lake, CaliforniaFri, Nov 9, 3:07 PM PST · 17129 days ago · -1 km deep · 56 km away
55. 2.023 km W of Indianola, CaliforniaFri, Nov 9, 8:25 PM PST · 17129 days ago · 20 km deep · 53 km away
56. 1.819 km W of Indianola, CaliforniaSat, Nov 10, 3:54 AM PST · 17128 days ago · 21 km deep · 50 km away
57. 1.836 km SW of Ferndale, CaliforniaSun, Nov 11, 12:25 AM PST · 17128 days ago · 27 km deep · 36 km away
58. 2.337 km SW of Ferndale, CaliforniaSun, Nov 11, 12:47 AM PST · 17128 days ago · 25 km deep · 39 km away
59. 1.77 km W of Willow Creek, CaliforniaSun, Nov 11, 3:04 AM PST · 17127 days ago · 23 km deep · 71 km away
60. 2.37 km E of Mad River, CaliforniaSun, Nov 11, 3:23 PM PST · 17127 days ago · 29 km deep · 57 km away

The first 60 of 118.

Before

1. 1.620 km NW of Willow Creek, CaliforniaThu, Oct 18, 1:40 PM PDT · 17151 days ago · 24 km deep · 85 km away
2. 3.05 km N of Fortuna, CaliforniaWed, Oct 17, 4:38 PM PDT · 17152 days ago · 23 km deep · 34 km away
3. 2.116 km ESE of Pine Hills, CaliforniaWed, Oct 17, 10:04 AM PDT · 17152 days ago · 22 km deep · 37 km away
4. 1.815 km SW of Mad River, CaliforniaWed, Oct 17, 1:04 AM PDT · 17153 days ago · 20 km deep · 39 km away
5. 1.73 km SE of Willow Creek, CaliforniaTue, Oct 16, 7:21 PM PDT · 17153 days ago · 28 km deep · 75 km away
6. 2.835 km SSW of Ferndale, CaliforniaTue, Oct 16, 6:55 PM PDT · 17153 days ago · 22 km deep · 34 km away
7. 1.5Northern CaliforniaTue, Oct 16, 7:14 AM PDT · 17153 days ago · 1 km deep · 34 km away
8. 2.528 km SW of Ferndale, CaliforniaMon, Oct 15, 11:37 PM PDT · 17154 days ago · 28 km deep · 34 km away
9. 1.627 km SE of Blue Lake, CaliforniaMon, Oct 15, 2:15 PM PDT · 17154 days ago · 22 km deep · 46 km away
10. 1.7near the coast of Northern CaliforniaMon, Oct 15, 11:49 AM PDT · 17154 days ago · 20 km deep · 37 km away
11. 1.626 km WSW of Ferndale, CaliforniaMon, Oct 15, 1:42 AM PDT · 17155 days ago · 24 km deep · 42 km away
12. 3.04 km NE of Trinidad, CaliforniaSun, Oct 14, 7:23 PM PDT · 17155 days ago · 19 km deep · 83 km away
13. 2.339 km WSW of Ferndale, CaliforniaSun, Oct 14, 4:32 PM PDT · 17155 days ago · 27 km deep · 52 km away
14. 1.730 km SW of Scotia, CaliforniaSat, Oct 13, 5:54 PM PDT · 17156 days ago · 23 km deep · 24 km away
15. 1.653 km W of Ferndale, CaliforniaFri, Oct 12, 8:55 PM PDT · 17157 days ago · 9 km deep · 74 km away
16. 3.033 km SSW of Ferndale, CaliforniaFri, Oct 12, 9:18 AM PDT · 17157 days ago · 23 km deep · 31 km away
17. 2.424 km WNW of Samoa, CaliforniaFri, Oct 12, 7:39 AM PDT · 17157 days ago · 18 km deep · 66 km away
18. 2.72 km NE of Rio Dell, CaliforniaThu, Oct 11, 6:20 AM PDT · 17158 days ago · 25 km deep · 18 km away
19. 2.0near the coast of Northern CaliforniaMon, Oct 8, 4:17 PM PDT · 17161 days ago · 19 km deep · 66 km away
20. 1.94 km S of Willow Creek, CaliforniaMon, Oct 8, 5:08 AM PDT · 17161 days ago · 22 km deep · 72 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc1048418. Read Fri, Oct 2, 2026, 8:47 PM UTC.