M2.9 earthquake 121 km W of Ferndale, California

Magnitude

2.9 (Md, duration), micro

Magnitude from

Northern California Seismic System

Local time

Thu, Apr 28, 1983, 11:45 AM PDT

UTC

1983-04-28 18:45:17 UTC

Depth

6.9 km (4.3 mi), shallow

Epicenter

40.517° N, 125.695° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 5.6 km horizontally, 5.0 km in depth

Magnitude uncertainty

±0.24

Depth from

From location

Station coverage gap

276°, poorly surrounded by stations

Stations used

18

• Ferndale, CaliforniaPopulation 1,369. Forecast121 kmW
• Fortuna, CaliforniaPopulation 12,000. Forecast130 kmW
• Chico, CaliforniaPopulation 121,345. Forecast339 kmWNW

After

1. 1.624 km WSW of Ferndale, CaliforniaSun, May 1, 8:47 PM PDT · 15862 days ago · 23 km deep · 97 km away
2. 2.595 km WNW of Indianola, CaliforniaWed, May 4, 9:19 PM PDT · 15859 days ago · 5 km deep · 52 km away
3. 1.831 km SW of Ferndale, CaliforniaFri, May 6, 7:25 PM PDT · 15857 days ago · 25 km deep · 96 km away
4. 1.736 km WSW of Ferndale, CaliforniaFri, May 6, 8:52 PM PDT · 15857 days ago · 23 km deep · 90 km away
5. 2.9111 km W of Ferndale, CaliforniaTue, May 10, 12:43 PM PDT · 15853 days ago · 5 km deep · 14 km away
6. 3.443 km SW of Ferndale, CaliforniaTue, May 10, 11:48 PM PDT · 15853 days ago · 23 km deep · 88 km away
7. 2.743 km SW of Ferndale, CaliforniaThu, May 12, 5:18 AM PDT · 15852 days ago · 21 km deep · 92 km away
8. 2.030 km WSW of Ferndale, CaliforniaSun, May 15, 3:01 PM PDT · 15848 days ago · 26 km deep · 92 km away
9. 4.461 km SW of Ferndale, CaliforniaTue, May 17, 5:50 PM PDT · 15846 days ago · 5 km deep · 78 km away
10. 3.869 km WSW of Ferndale, CaliforniaTue, May 17, 6:10 PM PDT · 15846 days ago · 5 km deep · 69 km away
11. 4.1off the coast of Northern CaliforniaThu, May 26, 4:54 AM PDT · 15838 days ago · 5 km deep · 74 km away
12. 3.961 km W of Ferndale, CaliforniaThu, May 26, 4:55 AM PDT · 15838 days ago · 56 km deep · 61 km away
13. 2.139 km SW of Ferndale, CaliforniaFri, May 27, 3:35 PM PDT · 15836 days ago · 11 km deep · 97 km away
14. 2.491 km W of Ferndale, CaliforniaSat, May 28, 3:59 PM PDT · 15835 days ago · 5 km deep · 31 km away
15. 5.1100 km W of Ferndale, CaliforniaSat, May 28, 11:55 PM PDT · 15835 days ago · 10 km deep · 22 km away
16. 3.0130 km W of Ferndale, CaliforniaSun, May 29, 12:01 AM PDT · 15835 days ago · 4 km deep · 10 km away
17. 2.7102 km W of Ferndale, CaliforniaSun, May 29, 12:48 AM PDT · 15835 days ago · 5 km deep · 22 km away
18. 2.544 km SW of Ferndale, CaliforniaMon, May 30, 7:36 PM PDT · 15833 days ago · 19 km deep · 88 km away
19. 2.232 km WSW of Ferndale, CaliforniaFri, Jun 3, 9:18 AM PDT · 15829 days ago · 13 km deep · 95 km away
20. 3.031 km SW of Ferndale, CaliforniaSat, Jun 4, 4:34 PM PDT · 15828 days ago · 12 km deep · 98 km away
21. 2.9156 km W of Ferndale, CaliforniaThu, Jun 9, 8:24 AM PDT · 15823 days ago · 12 km deep · 37 km away
22. 2.828 km WSW of Ferndale, CaliforniaSat, Jun 11, 11:08 AM PDT · 15821 days ago · 26 km deep · 97 km away
23. 2.225 km W of Ferndale, CaliforniaSun, Jun 12, 4:03 PM PDT · 15820 days ago · 20 km deep · 96 km away
24. 2.028 km WSW of Ferndale, CaliforniaTue, Jun 14, 10:26 AM PDT · 15818 days ago · 26 km deep · 95 km away
25. 2.665 km W of Ferndale, CaliforniaFri, Jun 17, 3:24 PM PDT · 15815 days ago · 5 km deep · 56 km away
26. 1.930 km WSW of Ferndale, CaliforniaSat, Jun 18, 12:31 AM PDT · 15815 days ago · 22 km deep · 94 km away
27. 3.140 km W of Ferndale, CaliforniaSun, Jun 19, 1:01 AM PDT · 15814 days ago · 20 km deep · 81 km away
28. 2.8121 km W of Ferndale, CaliforniaMon, Jun 20, 1:37 AM PDT · 15813 days ago · 5 km deep · 13 km away
29. 2.151 km W of Ferndale, CaliforniaTue, Jun 21, 6:47 AM PDT · 15812 days ago · 20 km deep · 70 km away
30. 3.138 km SW of Ferndale, CaliforniaWed, Jun 22, 7:35 PM PDT · 15810 days ago · 21 km deep · 97 km away
31. 3.139 km WSW of Ferndale, CaliforniaSat, Jun 25, 1:34 AM PDT · 15808 days ago · 23 km deep · 87 km away
32. 2.229 km SW of Ferndale, CaliforniaSat, Jun 25, 5:59 PM PDT · 15807 days ago · 19 km deep · 98 km away
33. 2.037 km WSW of Ferndale, CaliforniaSat, Jun 25, 9:59 PM PDT · 15807 days ago · 16 km deep · 91 km away

Before

1. 2.041 km SW of Ferndale, CaliforniaThu, Apr 28, 3:24 AM PDT · 15866 days ago · 10 km deep · 99 km away
2. 1.528 km WNW of Ferndale, CaliforniaWed, Apr 27, 10:09 AM PDT · 15866 days ago · 23 km deep · 96 km away
3. 3.355 km WSW of Ferndale, CaliforniaSat, Apr 23, 7:08 PM PST · 15870 days ago · 23 km deep · 74 km away
4. 4.040 km WSW of Ferndale, CaliforniaSat, Apr 23, 2:52 PM PST · 15870 days ago · 20 km deep · 86 km away
5. 2.760 km WSW of Ferndale, CaliforniaWed, Apr 20, 8:31 AM PST · 15873 days ago · 25 km deep · 68 km away
6. 3.950 km W of Ferndale, CaliforniaTue, Apr 19, 2:09 PM PST · 15874 days ago · 85 km deep · 71 km away
7. 1.758 km WNW of Fields Landing, CaliforniaSat, Apr 16, 2:24 PM PST · 15877 days ago · 9 km deep · 81 km away
8. 3.038 km SW of Ferndale, CaliforniaSat, Apr 16, 3:17 AM PST · 15878 days ago · 22 km deep · 96 km away
9. 2.236 km WSW of Ferndale, CaliforniaWed, Apr 13, 6:59 PM PST · 15880 days ago · 29 km deep · 86 km away
10. 3.487 km W of Ferndale, CaliforniaWed, Apr 13, 10:36 AM PST · 15880 days ago · 5 km deep · 35 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc1090972. Read Mon, Oct 5, 2026, 2:44 AM UTC.