M2.8 earthquake 53 km WNW of Ferndale, California

Magnitude

2.8 (Md, duration), micro

Magnitude from

Northern California Seismic System

Local time

Sat, Feb 23, 1985, 1:51 PM PST

UTC

1985-02-23 21:51:03 UTC

Depth

41.4 km (25.7 mi), shallow

Epicenter

40.720° N, 124.866° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 11.8 km horizontally, 5.9 km in depth

Magnitude uncertainty

±0.30

Depth from

From location

Station coverage gap

312°, poorly surrounded by stations

Stations used

7

• Ferndale, CaliforniaPopulation 1,369. Forecast53 kmWNW
• Eureka, CaliforniaPopulation 27,017. Forecast60 kmW
• Chico, CaliforniaPopulation 121,345. Forecast280 kmWNW

After

1. 2.228 km SW of Scotia, CaliforniaSun, Feb 24, 4:13 AM PST · 15194 days ago · 10 km deep · 63 km away
2. 1.726 km SW of Scotia, CaliforniaSun, Feb 24, 6:49 AM PST · 15194 days ago · 3 km deep · 64 km away
3. 2.126 km SW of Scotia, CaliforniaSun, Feb 24, 7:49 AM PST · 15194 days ago · 5 km deep · 65 km away
4. 2.532 km SW of Ferndale, CaliforniaSun, Feb 24, 1:36 PM PST · 15193 days ago · 11 km deep · 47 km away
5. 1.529 km SW of Scotia, CaliforniaSun, Feb 24, 3:23 PM PST · 15193 days ago · 2 km deep · 65 km away
6. 2.028 km SE of Blue Lake, CaliforniaMon, Feb 25, 4:18 PM PST · 15192 days ago · 22 km deep · 91 km away
7. 2.637 km W of Big Lagoon, CaliforniaSun, Mar 3, 6:08 PM PST · 15186 days ago · 4 km deep · 55 km away
8. 3.035 km W of Big Lagoon, CaliforniaSun, Mar 3, 6:55 PM PST · 15186 days ago · 17 km deep · 53 km away
9. 2.63 km ESE of Scotia, CaliforniaSun, Mar 3, 9:20 PM PST · 15186 days ago · 18 km deep · 74 km away
10. 2.761 km WSW of Ferndale, CaliforniaFri, Mar 15, 1:34 PM PST · 15174 days ago · 25 km deep · 43 km away
11. 1.832 km SSW of Ferndale, CaliforniaSat, Mar 16, 3:17 AM PST · 15174 days ago · 4 km deep · 56 km away
12. 2.312 km W of Indianola, CaliforniaMon, Mar 18, 4:49 AM PST · 15172 days ago · 19 km deep · 41 km away
13. 3.043 km SW of Ferndale, CaliforniaWed, Mar 20, 8:19 PM PST · 15169 days ago · 18 km deep · 47 km away
14. 2.932 km SW of Ferndale, CaliforniaThu, Mar 21, 7:45 AM PST · 15169 days ago · 20 km deep · 51 km away
15. 2.49 km S of Ferndale, CaliforniaFri, Mar 22, 7:26 PM PST · 15167 days ago · 26 km deep · 56 km away
16. 1.930 km SSW of Ferndale, CaliforniaFri, Mar 22, 11:54 PM PST · 15167 days ago · 7 km deep · 58 km away
17. 2.831 km SW of Scotia, CaliforniaMon, Mar 25, 12:19 AM PST · 15165 days ago · 21 km deep · 64 km away
18. 2.521 km WSW of Scotia, CaliforniaMon, Mar 25, 7:11 PM PST · 15164 days ago · 22 km deep · 61 km away
19. 2.48 km ESE of Hydesville, CaliforniaThu, Mar 28, 4:14 PM PST · 15161 days ago · 20 km deep · 76 km away
20. 3.071 km W of Ferndale, CaliforniaFri, Mar 29, 5:44 AM PST · 15161 days ago · 4 km deep · 24 km away
21. 1.815 km N of Shelter Cove, CaliforniaFri, Mar 29, 3:33 PM PST · 15160 days ago · 23 km deep · 90 km away
22. 2.031 km SSW of Ferndale, CaliforniaSat, Mar 30, 2:46 AM PST · 15160 days ago · 4 km deep · 58 km away
23. 2.843 km SSW of Ferndale, CaliforniaSun, Mar 31, 11:51 AM PST · 15158 days ago · 11 km deep · 59 km away
24. 1.98 km SSW of Ferndale, CaliforniaTue, Apr 2, 3:47 PM PST · 15156 days ago · 19 km deep · 54 km away
25. 3.59 km S of Ferndale, CaliforniaTue, Apr 2, 6:27 PM PST · 15156 days ago · 18 km deep · 55 km away
26. 2.89 km S of Ferndale, CaliforniaTue, Apr 2, 9:53 PM PST · 15156 days ago · 18 km deep · 56 km away
27. 2.09 km S of Ferndale, CaliforniaWed, Apr 3, 5:12 AM PST · 15156 days ago · 18 km deep · 56 km away
28. 3.323 km SW of Scotia, CaliforniaWed, Apr 3, 10:12 AM PST · 15155 days ago · 20 km deep · 63 km away
29. 2.354 km W of Ferndale, CaliforniaThu, Apr 4, 1:47 PM PST · 15154 days ago · 4 km deep · 21 km away
30. 2.9122 km WSW of Ferndale, CaliforniaFri, Apr 5, 1:00 PM PST · 15153 days ago · 4 km deep · 81 km away
31. 2.715 km S of Scotia, CaliforniaSat, Apr 6, 7:09 AM PST · 15153 days ago · 21 km deep · 75 km away
32. 3.543 km SW of Ferndale, CaliforniaSat, Apr 6, 8:38 AM PST · 15153 days ago · 23 km deep · 43 km away
33. 4.0114 km W of Ferndale, CaliforniaSat, Apr 6, 12:40 PM PST · 15152 days ago · 5 km deep · 64 km away
34. 1.827 km SW of Scotia, CaliforniaSun, Apr 7, 9:56 AM PST · 15151 days ago · 9 km deep · 66 km away
35. 2.237 km WSW of Ferndale, CaliforniaMon, Apr 8, 1:58 AM PST · 15151 days ago · 25 km deep · 34 km away
36. 1.65 km SSW of Redcrest, CaliforniaMon, Apr 8, 4:33 AM PST · 15151 days ago · 21 km deep · 85 km away
37. 2.314 km SSW of Scotia, CaliforniaMon, Apr 8, 6:16 AM PST · 15151 days ago · 29 km deep · 72 km away
38. 1.83 km WSW of Myers Flat, CaliforniaWed, Apr 10, 3:23 AM PST · 15149 days ago · 5 km deep · 96 km away
39. 3.089 km W of Ferndale, CaliforniaWed, Apr 10, 5:01 PM PST · 15148 days ago · 35 km deep · 41 km away
40. 2.18 km NE of Hydesville, CaliforniaWed, Apr 10, 6:48 PM PST · 15148 days ago · 18 km deep · 72 km away
41. 2.04 km SE of Ferndale, CaliforniaThu, Apr 11, 11:36 PM PST · 15147 days ago · 23 km deep · 57 km away
42. 2.73 km SE of Ferndale, CaliforniaThu, Apr 11, 11:37 PM PST · 15147 days ago · 23 km deep · 56 km away
43. 3.837 km SSW of Ferndale, CaliforniaSat, Apr 13, 7:05 AM PST · 15146 days ago · 15 km deep · 56 km away
44. 3.442 km WSW of Ferndale, CaliforniaSat, Apr 13, 10:55 PM PST · 15145 days ago · 15 km deep · 29 km away
45. 1.712 km ENE of Redcrest, CaliforniaSun, Apr 14, 2:28 AM PST · 15145 days ago · 24 km deep · 92 km away
46. 3.441 km WSW of Ferndale, CaliforniaTue, Apr 16, 6:58 AM PST · 15143 days ago · 18 km deep · 42 km away
47. 2.431 km W of Ferndale, CaliforniaWed, Apr 17, 7:55 AM PST · 15142 days ago · 17 km deep · 26 km away
48. 2.763 km WSW of Ferndale, CaliforniaThu, Apr 18, 5:51 PM PST · 15140 days ago · -1 km deep · 32 km away
49. 2.314 km WSW of Weott, CaliforniaFri, Apr 19, 5:12 AM PST · 15140 days ago · 17 km deep · 82 km away
50. 1.818 km W of Ferndale, CaliforniaSun, Apr 21, 4:11 AM PST · 15138 days ago · 4 km deep · 38 km away
51. 2.946 km WSW of Ferndale, CaliforniaSun, Apr 21, 1:40 PM PST · 15137 days ago · 4 km deep · 31 km away
52. 1.78 km SW of Weott, CaliforniaTue, Apr 23, 2:04 AM PST · 15136 days ago · 4 km deep · 91 km away
53. 3.028 km SW of Scotia, CaliforniaTue, Apr 23, 5:59 AM PST · 15136 days ago · 9 km deep · 65 km away
54. 3.423 km SSW of Scotia, CaliforniaTue, Apr 23, 6:40 AM PST · 15136 days ago · 10 km deep · 72 km away
55. 2.9118km W of Ferndale, CATue, Apr 23, 4:36 PM PST · 15135 days ago · 22 km deep · 70 km away

Before

1. 2.514 km SW of Ferndale, CaliforniaFri, Feb 22, 8:37 PM PST · 15195 days ago · 26 km deep · 46 km away
2. 3.529 km SW of Scotia, CaliforniaFri, Feb 22, 5:42 PM PST · 15195 days ago · 9 km deep · 64 km away
3. 2.951 km SW of Ferndale, CaliforniaWed, Feb 20, 3:53 PM PST · 15197 days ago · 13 km deep · 46 km away
4. 2.07 km WSW of Samoa, CaliforniaTue, Feb 19, 6:28 PM PST · 15198 days ago · 4 km deep · 51 km away
5. 3.0109 km W of Ferndale, CaliforniaSat, Feb 16, 4:05 PM PST · 15201 days ago · 5 km deep · 59 km away
6. 1.619 km WSW of Ferndale, CaliforniaFri, Feb 15, 1:51 AM PST · 15203 days ago · -1 km deep · 39 km away
7. 2.728 km SW of Ferndale, CaliforniaThu, Feb 7, 9:11 AM PST · 15211 days ago · 21 km deep · 47 km away
8. 2.612 km SSW of Scotia, CaliforniaWed, Feb 6, 8:17 PM PST · 15211 days ago · 29 km deep · 73 km away
9. 2.945 km WSW of Ferndale, CaliforniaWed, Feb 6, 1:26 AM PST · 15212 days ago · 22 km deep · 43 km away
10. 2.659 km WSW of Ferndale, CaliforniaTue, Feb 5, 6:19 PM PST · 15212 days ago · 10 km deep · 43 km away
11. 3.293 km WSW of Ferndale, CaliforniaMon, Feb 4, 7:55 AM PST · 15214 days ago · 21 km deep · 55 km away
12. 3.3112 km W of Ferndale, CaliforniaSun, Feb 3, 10:23 AM PST · 15214 days ago · 12 km deep · 69 km away
13. 3.438 km SW of Ferndale, CaliforniaSun, Feb 3, 12:49 AM PST · 15215 days ago · 19 km deep · 53 km away
14. 3.543 km WSW of Ferndale, CaliforniaThu, Jan 31, 12:37 PM PST · 15217 days ago · 15 km deep · 41 km away
15. 2.647 km W of Ferndale, CaliforniaThu, Jan 31, 4:52 AM PST · 15218 days ago · 0 km deep · 22 km away
16. 2.325 km NNE of Redcrest, CaliforniaWed, Jan 30, 10:46 AM PST · 15218 days ago · 7 km deep · 91 km away
17. 1.68 km WSW of Scotia, CaliforniaTue, Jan 29, 12:56 AM PST · 15220 days ago · 5 km deep · 65 km away
18. 2.465 km WSW of Ferndale, CaliforniaMon, Jan 28, 10:40 PM PST · 15220 days ago · 14 km deep · 50 km away
19. 3.052 km WSW of Ferndale, CaliforniaMon, Jan 28, 10:38 PM PST · 15220 days ago · 10 km deep · 43 km away
20. 2.222 km WNW of Ferndale, CaliforniaSun, Jan 27, 7:59 AM PST · 15222 days ago · 14 km deep · 32 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc43741. Read Thu, Oct 1, 2026, 4:54 AM UTC.