M1.7 earthquake 14 km W of Ruth, California

Magnitude

1.7 (Md, duration), micro

Magnitude from

Northern California Seismic System

Local time

Wed, Oct 9, 1985, 3:47 AM PDT

UTC

1985-10-09 10:47:08 UTC

Depth

-1.1 km (-0.7 mi), shallow

Epicenter

40.269° N, 123.489° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 2.9 km horizontally, 4.7 km in depth

Magnitude uncertainty

±0.34

Depth from

From location

Station coverage gap

224°, poorly surrounded by stations

Stations used

4

• Miranda, CaliforniaPopulation 520. Forecast29 kmE
• Fortuna, CaliforniaPopulation 12,000. Forecast67 kmESE
• Chico, CaliforniaPopulation 121,345. Forecast153 kmWNW
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast833 kmNNW

After

1. 2.112 km NNW of Potter Valley, CaliforniaThu, Oct 10, 5:02 PM PDT · 14966 days ago · 5 km deep · 98 km away
2. 2.720 km SW of Weott, CaliforniaFri, Oct 11, 2:11 AM PDT · 14966 days ago · 4 km deep · 53 km away
3. 2.041 km SW of Ferndale, CaliforniaFri, Oct 11, 4:43 PM PDT · 14965 days ago · 23 km deep · 100 km away
4. 3.337 km SW of Ferndale, CaliforniaSun, Oct 13, 6:14 PM PDT · 14963 days ago · 25 km deep · 93 km away
5. 1.631 km WNW of Paskenta, CaliforniaMon, Oct 14, 1:51 AM PDT · 14963 days ago · 10 km deep · 60 km away
6. 2.310 km SSE of Laytonville, CaliforniaMon, Oct 14, 9:39 AM PDT · 14962 days ago · 8 km deep · 73 km away
7. 1.76 km ENE of Willits, CaliforniaTue, Oct 15, 8:25 PM PDT · 14961 days ago · 4 km deep · 95 km away
8. 1.611 km SSE of Laytonville, CaliforniaThu, Oct 17, 9:32 AM PDT · 14959 days ago · 3 km deep · 75 km away
9. 2.625 km SE of Blue Lake, CaliforniaSat, Oct 19, 4:11 PM PDT · 14957 days ago · 53 km deep · 55 km away
10. 2.312 km SW of Scotia, CaliforniaMon, Oct 21, 1:42 AM PDT · 14956 days ago · 6 km deep · 62 km away
11. 3.622 km WNW of Indianola, CaliforniaFri, Oct 25, 6:56 PM PDT · 14951 days ago · 21 km deep · 100 km away
12. 1.527 km NNE of Potter Valley, CaliforniaFri, Oct 25, 6:59 PM PDT · 14951 days ago · 9 km deep · 91 km away
13. 3.122 km WSW of Weott, CaliforniaSat, Oct 26, 4:41 PM PDT · 14950 days ago · 13 km deep · 56 km away
14. 1.610 km SSE of Laytonville, CaliforniaMon, Oct 28, 4:37 PM PST · 14948 days ago · 7 km deep · 74 km away
15. 2.127 km E of Ruth, CaliforniaTue, Oct 29, 5:57 AM PST · 14947 days ago · 25 km deep · 42 km away
16. 2.98 km WNW of McKinleyville, CaliforniaTue, Oct 29, 7:48 PM PST · 14947 days ago · 18 km deep · 98 km away
17. 1.917 km NW of Willow Creek, CaliforniaWed, Oct 30, 8:44 PM PST · 14946 days ago · -1 km deep · 92 km away
18. 2.719 km WNW of Indianola, CaliforniaThu, Oct 31, 7:31 PM PST · 14945 days ago · 20 km deep · 98 km away
19. 1.79 km NNE of Brooktrails, CaliforniaSat, Nov 2, 7:29 AM PST · 14943 days ago · 8 km deep · 84 km away
20. 2.18 km NNE of Trinity Village, CaliforniaSat, Nov 2, 7:58 PM PST · 14943 days ago · 23 km deep · 76 km away
21. 1.521 km W of Trinity Center, CaliforniaSun, Nov 3, 8:07 PM PST · 14942 days ago · 20 km deep · 89 km away
22. 2.235 km SSW of Ferndale, CaliforniaWed, Nov 6, 9:25 PM PST · 14939 days ago · 18 km deep · 81 km away
23. 1.734 km NW of Shelter Cove, CaliforniaWed, Nov 6, 9:36 PM PST · 14939 days ago · 4 km deep · 78 km away
24. 2.025 km W of Paskenta, CaliforniaThu, Nov 7, 5:00 AM PST · 14938 days ago · -1 km deep · 69 km away
25. 2.52 km NNE of Humboldt Hill, CaliforniaFri, Nov 8, 1:59 PM PST · 14937 days ago · 19 km deep · 79 km away
26. 1.823 km SE of Covelo, CaliforniaSat, Nov 9, 7:34 AM PST · 14936 days ago · 5 km deep · 80 km away
27. 2.29 km WNW of Ferndale, CaliforniaSat, Nov 9, 8:44 PM PST · 14936 days ago · 11 km deep · 84 km away
28. 1.828 km W of Paskenta, CaliforniaMon, Nov 11, 5:25 AM PST · 14934 days ago · 15 km deep · 64 km away
29. 1.77 km NE of Phillipsville, CaliforniaMon, Nov 11, 4:24 PM PST · 14934 days ago · 8 km deep · 21 km away
30. 2.88 km E of Leggett, CaliforniaMon, Nov 11, 8:15 PM PST · 14934 days ago · 0 km deep · 48 km away
31. 2.613 km N of Brooktrails, CaliforniaMon, Nov 11, 8:57 PM PST · 14934 days ago · 9 km deep · 79 km away
32. 2.537 km SSW of Ferndale, CaliforniaTue, Nov 12, 2:17 AM PST · 14934 days ago · 21 km deep · 86 km away
33. 1.610 km W of Ferndale, CaliforniaWed, Nov 13, 1:35 AM PST · 14933 days ago · 15 km deep · 84 km away
34. 1.630 km ENE of Covelo, CaliforniaWed, Nov 13, 3:41 AM PST · 14933 days ago · 16 km deep · 60 km away
35. 1.513 km N of Brooktrails, CaliforniaWed, Nov 13, 4:27 AM PST · 14932 days ago · 9 km deep · 79 km away
36. 1.78 km N of Laytonville, CaliforniaWed, Nov 13, 6:29 AM PST · 14932 days ago · 3 km deep · 56 km away
37. 1.66 km ENE of Brooktrails, CaliforniaFri, Nov 15, 5:43 AM PST · 14930 days ago · 7 km deep · 89 km away
38. 2.113 km ENE of Fieldbrook, CaliforniaSun, Nov 17, 1:16 AM PST · 14929 days ago · 4 km deep · 90 km away
39. 1.514 km SSE of Laytonville, CaliforniaSun, Nov 17, 4:03 AM PST · 14929 days ago · 10 km deep · 77 km away
40. 1.819 km WSW of Scotia, CASun, Nov 17, 9:26 AM PST · 14928 days ago · 4 km deep · 70 km away
41. 2.321 km NNW of Willow Creek, CaliforniaTue, Nov 19, 7:34 AM PST · 14926 days ago · 4 km deep · 97 km away
42. 2.533 km SW of Ferndale, CaliforniaTue, Nov 19, 8:43 AM PST · 14926 days ago · 25 km deep · 94 km away
43. 1.726 km WNW of Paskenta, CaliforniaTue, Nov 19, 11:46 AM PST · 14926 days ago · -1 km deep · 65 km away
44. 2.725 km SSW of Ferndale, CaliforniaWed, Nov 20, 11:08 PM PST · 14925 days ago · 39 km deep · 76 km away
45. 3.78 km NNW of Alderpoint, CaliforniaFri, Nov 22, 11:27 PM PST · 14923 days ago · 28 km deep · 15 km away
46. 1.613 km SW of Mad River, CaliforniaFri, Nov 22, 11:44 PM PST · 14923 days ago · 4 km deep · 18 km away
47. 1.710 km NE of Phillipsville, CaliforniaFri, Nov 22, 11:47 PM PST · 14923 days ago · 24 km deep · 17 km away
48. 2.210 km NE of Phillipsville, CaliforniaSat, Nov 23, 12:47 AM PST · 14923 days ago · 29 km deep · 17 km away
49. 2.49 km NNW of Alderpoint, CaliforniaSat, Nov 23, 9:30 PM PST · 14922 days ago · 26 km deep · 16 km away
50. 1.810 km NE of Phillipsville, CaliforniaSat, Nov 23, 11:17 PM PST · 14922 days ago · 26 km deep · 18 km away
51. 1.817 km NE of Myers Flat, CaliforniaSun, Nov 24, 6:25 PM PST · 14921 days ago · 22 km deep · 24 km away
52. 2.118 km ENE of Weott, CaliforniaSun, Nov 24, 6:26 PM PST · 14921 days ago · 19 km deep · 25 km away
53. 2.334 km NW of Paskenta, CaliforniaWed, Nov 27, 1:35 AM PST · 14919 days ago · 8 km deep · 58 km away
54. 2.523 km NW of Willow Creek, CaliforniaWed, Nov 27, 6:06 PM PST · 14918 days ago · -1 km deep · 98 km away
55. 1.73 km SSW of Loleta, CaliforniaWed, Nov 27, 9:22 PM PST · 14918 days ago · 4 km deep · 74 km away
56. 1.930 km WNW of Paskenta, CaliforniaFri, Nov 29, 9:13 PM PST · 14916 days ago · 1 km deep · 61 km away
57. 2.29 km N of Mad River, CaliforniaTue, Dec 3, 1:03 PM PST · 14912 days ago · 4 km deep · 30 km away
58. 1.821 km NE of Willow Creek, CaliforniaThu, Dec 5, 11:38 AM PST · 14910 days ago · 4 km deep · 88 km away
59. 2.22 km E of Benbow, CaliforniaThu, Dec 5, 5:53 PM PST · 14910 days ago · 17 km deep · 32 km away
60. 2.433 km NE of Trinity Village, CaliforniaFri, Dec 6, 1:13 AM PST · 14910 days ago · 30 km deep · 93 km away

Before

1. 3.528 km SW of Ferndale, CaliforniaSat, Oct 5, 9:34 PM PDT · 14971 days ago · 16 km deep · 84 km away
2. 1.925 km SW of Ferndale, CaliforniaSat, Oct 5, 8:51 PM PDT · 14971 days ago · 27 km deep · 85 km away
3. 2.422 km NW of Mad River, CaliforniaSat, Oct 5, 4:49 AM PDT · 14972 days ago · 23 km deep · 39 km away
4. 2.221 km WSW of Ferndale, CaliforniaSat, Oct 5, 12:12 AM PDT · 14972 days ago · 22 km deep · 87 km away
5. 1.722 km WSW of Weott, CaliforniaFri, Oct 4, 3:30 PM PDT · 14972 days ago · 9 km deep · 58 km away
6. 2.14 km ESE of Fortuna, CaliforniaFri, Oct 4, 12:52 PM PDT · 14972 days ago · 22 km deep · 63 km away
7. 2.411 km SSE of Laytonville, CaliforniaWed, Oct 2, 3:08 AM PDT · 14975 days ago · 2 km deep · 76 km away
8. 1.715 km WSW of Laytonville, CaliforniaTue, Oct 1, 11:25 AM PDT · 14975 days ago · 3 km deep · 71 km away
9. 3.329 km SE of Ruth, CaliforniaTue, Oct 1, 4:59 AM PDT · 14976 days ago · 42 km deep · 41 km away
10. 1.813 km N of French Gulch, CaliforniaMon, Sep 30, 7:19 PM PDT · 14976 days ago · 40 km deep · 96 km away
11. 1.835 km WSW of Ferndale, CaliforniaSun, Sep 29, 8:49 PM PDT · 14977 days ago · 25 km deep · 98 km away
12. 1.818 km SSW of Ferndale, CaliforniaSun, Sep 29, 8:14 PM PDT · 14977 days ago · 26 km deep · 75 km away
13. 1.619 km SSW of Ferndale, CaliforniaSun, Sep 29, 7:56 PM PDT · 14977 days ago · 26 km deep · 75 km away
14. 1.84 km N of Hydesville, CaliforniaSun, Sep 29, 6:12 PM PDT · 14977 days ago · 19 km deep · 62 km away
15. 1.831 km SSW of Ferndale, CaliforniaSat, Sep 28, 12:32 PM PDT · 14978 days ago · 4 km deep · 81 km away
16. 2.04 km NE of Hydesville, CaliforniaThu, Sep 26, 4:14 PM PDT · 14980 days ago · 25 km deep · 60 km away
17. 1.74 km ESE of Cleone, CaliforniaWed, Sep 25, 6:30 PM PDT · 14981 days ago · 3 km deep · 91 km away
18. 2.210 km SW of Scotia, CaliforniaTue, Sep 24, 11:20 PM PDT · 14982 days ago · 12 km deep · 60 km away
19. 1.71 km SW of Redway, CaliforniaFri, Sep 20, 2:50 PM PDT · 14986 days ago · 19 km deep · 34 km away
20. 2.127 km ESE of Covelo, CaliforniaFri, Sep 20, 5:57 AM PDT · 14986 days ago · 4 km deep · 78 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc1132061. Read Thu, Oct 1, 2026, 11:46 PM UTC.