M1.8 earthquake 16 km WNW of Mad River, California

Magnitude

1.8 (md), micro

Local time

Thu, Dec 26, 1985, 1:00 PM PST

UTC

1985-12-26 21:00:17 UTC

Depth

23.8 km (14.8 mi), shallow

Epicenter

40.494° N, 123.698° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.7 km horizontally, 1.7 km in depth

Magnitude uncertainty

±0.08

Depth from

From location

Station coverage gap

94°

Stations used

9

• Miranda, CaliforniaPopulation 520. Forecast31 kmNNE
• Fortuna, CaliforniaPopulation 12,000. Forecast40 kmESE
• Chico, CaliforniaPopulation 121,345. Forecast180 kmWNW
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast863 kmNNW

After

1. 3.958 km W of Shelter Cove, CaliforniaSat, Dec 28, 4:38 PM PST · 14885 days ago · 4 km deep · 98 km away
2. 2.610 km W of Indianola, CaliforniaWed, Jan 1, 2:34 AM PST · 14881 days ago · 0 km deep · 61 km away
3. 3.19 km NW of Ferndale, CaliforniaFri, Jan 3, 4:33 AM PST · 14879 days ago · 8 km deep · 57 km away
4. 2.614 km WSW of Scotia, CaliforniaSat, Jan 4, 8:00 PM PST · 14878 days ago · 25 km deep · 47 km away
5. 2.629 km SW of Scotia, CaliforniaSat, Jan 4, 9:56 PM PST · 14878 days ago · 8 km deep · 60 km away
6. 2.228 km SW of Scotia, CaliforniaSat, Jan 4, 9:57 PM PST · 14878 days ago · 6 km deep · 60 km away
7. 1.629 km SW of Scotia, CaliforniaSun, Jan 5, 4:19 AM PST · 14877 days ago · 9 km deep · 59 km away
8. 2.015 km SE of Orick, CaliforniaWed, Jan 8, 9:43 AM PST · 14874 days ago · -1 km deep · 81 km away
9. 1.815 km NE of Miranda, CaliforniaWed, Jan 8, 4:54 PM PST · 14874 days ago · 19 km deep · 16 km away
10. 2.918 km WNW of Junction City, CaliforniaThu, Jan 9, 1:39 AM PST · 14873 days ago · 28 km deep · 51 km away
11. 2.831 km SW of Scotia, CaliforniaThu, Jan 9, 3:46 AM PST · 14873 days ago · 16 km deep · 63 km away
12. 2.15 km SSE of Ferndale, CaliforniaFri, Jan 10, 7:04 AM PST · 14872 days ago · 7 km deep · 47 km away
13. 2.645 km WNW of Samoa, CaliforniaFri, Jan 10, 7:20 AM PST · 14872 days ago · 4 km deep · 98 km away
14. 3.212 km WSW of Redcrest, CaliforniaFri, Jan 10, 11:53 AM PST · 14872 days ago · 1 km deep · 36 km away
15. 1.79 km WSW of Ferndale, CaliforniaSat, Jan 11, 12:44 PM PST · 14871 days ago · 17 km deep · 56 km away
16. 2.07 km W of Rio Dell, CaliforniaSun, Jan 12, 3:28 AM PST · 14870 days ago · 20 km deep · 42 km away
17. 2.126 km W of Paskenta, CaliforniaSun, Jan 12, 2:02 PM PST · 14870 days ago · -1 km deep · 95 km away
18. 2.114 km WSW of Weott, CaliforniaSun, Jan 12, 9:20 PM PST · 14870 days ago · 8 km deep · 41 km away
19. 1.910 km NE of Redcrest, CaliforniaMon, Jan 13, 10:32 PM PST · 14869 days ago · 7 km deep · 14 km away
20. 2.72 km NW of Laytonville, CaliforniaTue, Jan 14, 12:15 PM PST · 14868 days ago · 7 km deep · 89 km away
21. 1.82 km WNW of Laytonville, CaliforniaTue, Jan 14, 12:40 PM PST · 14868 days ago · 6 km deep · 89 km away
22. 2.74 km WNW of Redway, CaliforniaThu, Jan 16, 3:51 AM PST · 14866 days ago · 21 km deep · 43 km away
23. 3.035 km WSW of Ferndale, CaliforniaThu, Jan 16, 11:05 AM PST · 14866 days ago · 23 km deep · 79 km away
24. 2.217 km WSW of Leggett, CaliforniaThu, Jan 16, 4:12 PM PST · 14866 days ago · 2 km deep · 78 km away
25. 2.013 km NE of Willow Creek, CaliforniaFri, Jan 17, 10:14 PM PST · 14865 days ago · -1 km deep · 60 km away
26. 1.916 km NE of Miranda, CaliforniaSun, Jan 19, 1:34 PM PST · 14863 days ago · 4 km deep · 17 km away
27. 2.733 km SSW of Ferndale, CaliforniaTue, Jan 21, 2:56 AM PST · 14861 days ago · 11 km deep · 67 km away
28. 2.19 km W of Laytonville, CaliforniaThu, Jan 23, 1:06 AM PST · 14859 days ago · 1 km deep · 90 km away
29. 2.02 km NW of Laytonville, CaliforniaThu, Jan 23, 8:03 PM PST · 14859 days ago · 7 km deep · 89 km away
30. 1.91 km SSW of Redway, CaliforniaSun, Jan 26, 3:56 PM PST · 14856 days ago · 18 km deep · 44 km away
31. 2.749 km WNW of Shelter Cove, CaliforniaThu, Jan 30, 2:40 AM PST · 14852 days ago · 4 km deep · 84 km away
32. 1.910 km E of Hydesville, CaliforniaFri, Jan 31, 11:11 PM PST · 14851 days ago · 4 km deep · 24 km away
33. 1.98 km NNW of Redcrest, CaliforniaSat, Feb 1, 10:39 AM PST · 14850 days ago · 25 km deep · 23 km away
34. 3.24 km ESE of Indianola, CaliforniaSun, Feb 2, 11:31 AM PST · 14849 days ago · 20 km deep · 44 km away
35. 3.025 km W of Paskenta, CaliforniaMon, Feb 3, 12:45 PM PST · 14848 days ago · -1 km deep · 97 km away
36. 3.537 km W of Ferndale, CaliforniaWed, Feb 5, 4:00 AM PST · 14846 days ago · 17 km deep · 86 km away
37. 1.87 km SSW of Scotia, CaliforniaWed, Feb 5, 5:38 AM PST · 14846 days ago · 5 km deep · 37 km away
38. 1.71 km S of Loleta, CaliforniaFri, Feb 7, 6:53 AM PST · 14844 days ago · 4 km deep · 47 km away
39. 2.439 km WSW of Ferndale, CaliforniaSat, Feb 8, 1:09 PM PST · 14843 days ago · 14 km deep · 86 km away
40. 4.046 km WNW of Ferndale, CaliforniaTue, Feb 18, 4:25 PM PST · 14833 days ago · 1 km deep · 95 km away
41. 1.68 km E of Rio Dell, CaliforniaSun, Feb 23, 4:57 PM PST · 14828 days ago · 19 km deep · 26 km away
42. 2.328 km SSW of Ferndale, CaliforniaSun, Feb 23, 8:22 PM PST · 14828 days ago · 20 km deep · 65 km away

Before

1. 1.610 km SSW of Ferndale, CaliforniaThu, Dec 26, 8:12 AM PST · 14887 days ago · 7 km deep · 52 km away
2. 2.033 km WSW of Ferndale, CaliforniaThu, Dec 26, 5:58 AM PST · 14887 days ago · 15 km deep · 76 km away
3. 2.121 km SE of Blue Lake, CaliforniaWed, Dec 25, 8:58 AM PST · 14888 days ago · 27 km deep · 30 km away
4. 2.17 km W of Rio Dell, CaliforniaTue, Dec 24, 12:44 AM PST · 14889 days ago · 21 km deep · 42 km away
5. 1.739 km SSW of Ferndale, CaliforniaMon, Dec 23, 10:58 PM PST · 14890 days ago · 4 km deep · 71 km away
6. 2.526 km W of Paskenta, CaliforniaMon, Dec 23, 4:21 PM PST · 14890 days ago · -1 km deep · 95 km away
7. 2.14 km ESE of Indianola, CaliforniaSun, Dec 22, 7:47 AM PST · 14891 days ago · 17 km deep · 45 km away
8. 2.627 km SSW of Ferndale, CaliforniaSun, Dec 22, 6:00 AM PST · 14891 days ago · 17 km deep · 63 km away
9. 2.212 km NNE of Willow Creek, CaliforniaSat, Dec 21, 7:06 PM PST · 14892 days ago · 30 km deep · 63 km away
10. 3.652 km SW of Ferndale, CaliforniaSat, Dec 21, 11:00 AM PST · 14892 days ago · 11 km deep · 90 km away
11. 2.037 km W of Ferndale, CaliforniaFri, Dec 20, 1:32 PM PST · 14893 days ago · 4 km deep · 86 km away
12. 2.422 km SW of Ferndale, CaliforniaThu, Dec 19, 1:08 AM PST · 14894 days ago · 14 km deep · 63 km away
13. 2.626 km SW of Ferndale, CaliforniaThu, Dec 19, 12:35 AM PST · 14895 days ago · 16 km deep · 69 km away
14. 1.624 km WNW of Paskenta, CaliforniaWed, Dec 18, 10:10 PM PST · 14895 days ago · 4 km deep · 94 km away
15. 1.631 km SSW of Ferndale, CaliforniaTue, Dec 17, 9:38 PM PST · 14896 days ago · 5 km deep · 63 km away
16. 1.97 km W of Loleta, CaliforniaTue, Dec 17, 7:51 AM PST · 14896 days ago · 4 km deep · 55 km away
17. 1.64 km WSW of Ferndale, CaliforniaTue, Dec 17, 7:26 AM PST · 14896 days ago · 4 km deep · 52 km away
18. 1.84 km WSW of Ferndale, CaliforniaTue, Dec 17, 3:16 AM PST · 14896 days ago · 4 km deep · 52 km away
19. 1.85 km WNW of Ferndale, CaliforniaTue, Dec 17, 2:56 AM PST · 14896 days ago · 4 km deep · 54 km away
20. 2.09 km W of Bayview, CaliforniaMon, Dec 16, 12:48 PM PST · 14897 days ago · 20 km deep · 60 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc63749. Read Tue, Sep 29, 2026, 8:07 PM UTC.