M3.5 earthquake 140 km W of Ferndale, California

Magnitude

3.5 (ML, local (Richter)), minor

Magnitude from

Northern California Seismic System

Local time

Sun, Jul 25, 1982, 1:56 AM PDT

UTC

1982-07-25 08:56:13 UTC

Depth

12.4 km (7.7 mi), shallow

Epicenter

40.504° N, 125.923° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 7.0 km horizontally, 13.0 km in depth

Depth from

From location

Station coverage gap

303°, poorly surrounded by stations

Stations used

20

• Ferndale, CaliforniaPopulation 1,369. Forecast140 kmW
• Fortuna, CaliforniaPopulation 12,000. Forecast150 kmW
• Chico, CaliforniaPopulation 121,345. Forecast358 kmWNW

After

1. 2.982 km W of Ferndale, CaliforniaMon, Jul 26, 3:42 PM PDT · 16138 days ago · 6 km deep · 63 km away
2. 2.070 km WNW of Indianola, CaliforniaWed, Jul 28, 5:13 PM PDT · 16136 days ago · 4 km deep · 87 km away
3. 2.470 km WSW of Ferndale, CaliforniaSat, Jul 31, 3:43 PM PDT · 16133 days ago · 4 km deep · 72 km away
4. 2.383 km WSW of Ferndale, CaliforniaSat, Jul 31, 5:14 PM PDT · 16133 days ago · 4 km deep · 61 km away
5. 2.6114 km W of Ferndale, CaliforniaSun, Aug 1, 4:03 AM PDT · 16133 days ago · 5 km deep · 32 km away
6. 3.5231 km W of Ferndale, CaliforniaFri, Aug 6, 9:32 AM PDT · 16127 days ago · 4 km deep · 91 km away
7. 2.7136 km W of Ferndale, CaliforniaTue, Aug 10, 6:36 AM PDT · 16124 days ago · 5 km deep · 6 km away
8. 3.1130 km WNW of Indianola, CaliforniaTue, Aug 10, 6:39 AM PDT · 16124 days ago · 5 km deep · 58 km away
9. 1.9118 km W of Ferndale, CaliforniaSat, Aug 14, 2:23 AM PDT · 16120 days ago · 5 km deep · 28 km away
10. 3.048 km W of Ferndale, CaliforniaTue, Aug 17, 7:10 AM PDT · 16117 days ago · 19 km deep · 93 km away
11. 2.788 km W of Ferndale, CaliforniaWed, Aug 18, 8:42 AM PDT · 16116 days ago · 8 km deep · 53 km away
12. 2.7131 km W of Big Lagoon, CaliforniaWed, Aug 25, 7:16 PM PDT · 16108 days ago · 3 km deep · 95 km away
13. 3.278 km WSW of Ferndale, CaliforniaSat, Aug 28, 7:18 PM PDT · 16105 days ago · 10 km deep · 65 km away
14. 3.680 km W of Ferndale, CaliforniaSun, Aug 29, 2:23 PM PDT · 16104 days ago · 1 km deep · 65 km away
15. 2.782 km W of Ferndale, CaliforniaSun, Aug 29, 5:13 PM PDT · 16104 days ago · 25 km deep · 63 km away
16. 2.254 km W of Ferndale, CaliforniaThu, Sep 2, 5:14 PM PDT · 16100 days ago · 34 km deep · 86 km away
17. 3.065 km WSW of Ferndale, CaliforniaFri, Sep 3, 1:54 AM PDT · 16100 days ago · 25 km deep · 77 km away
18. 3.1102 km W of Ferndale, CaliforniaFri, Sep 3, 9:37 AM PDT · 16099 days ago · 5 km deep · 39 km away
19. 3.346 km WSW of Ferndale, CaliforniaFri, Sep 3, 9:38 AM PDT · 16099 days ago · 18 km deep · 95 km away
20. 2.3124 km W of Trinidad, CaliforniaMon, Sep 6, 3:53 AM PDT · 16097 days ago · 5 km deep · 70 km away
21. 2.564 km WSW of Ferndale, CaliforniaTue, Sep 7, 2:27 AM PDT · 16096 days ago · 0 km deep · 79 km away
22. 3.362 km WNW of Indianola, CaliforniaThu, Sep 9, 4:26 AM PDT · 16094 days ago · 7 km deep · 89 km away
23. 2.556 km WSW of Ferndale, CaliforniaThu, Sep 9, 3:42 PM PDT · 16093 days ago · 5 km deep · 85 km away
24. 3.196 km W of Ferndale, CaliforniaThu, Sep 16, 4:07 AM PDT · 16087 days ago · 22 km deep · 46 km away
25. 2.7134 km W of Ferndale, CaliforniaFri, Sep 17, 3:48 AM PDT · 16086 days ago · 5 km deep · 8 km away
26. 2.046 km W of Ferndale, CaliforniaFri, Sep 17, 4:26 AM PDT · 16086 days ago · 19 km deep · 95 km away
27. 2.847 km WSW of Ferndale, CaliforniaSat, Sep 18, 6:24 AM PDT · 16085 days ago · 21 km deep · 100 km away
28. 2.6121 km W of Ferndale, CaliforniaSat, Sep 18, 7:04 PM PDT · 16084 days ago · 19 km deep · 19 km away
29. 2.3114 km W of Ferndale, CaliforniaSun, Sep 19, 9:19 AM PDT · 16083 days ago · 11 km deep · 29 km away
30. 2.299 km W of Ferndale, CaliforniaSun, Sep 19, 2:50 PM PDT · 16083 days ago · 8 km deep · 43 km away
31. 2.0off the coast of Northern CaliforniaSun, Sep 19, 11:00 PM PDT · 16083 days ago · 6 km deep · 76 km away
32. 2.551 km W of Ferndale, CaliforniaTue, Sep 21, 9:34 AM PDT · 16081 days ago · 31 km deep · 89 km away
33. 2.5137 km W of Ferndale, CaliforniaWed, Sep 22, 4:49 PM PDT · 16080 days ago · 5 km deep · 8 km away
34. 2.179 km W of Ferndale, CaliforniaWed, Sep 22, 6:37 PM PDT · 16080 days ago · 7 km deep · 61 km away
35. 2.7167 km W of Ferndale, CaliforniaWed, Sep 22, 7:39 PM PDT · 16080 days ago · 5 km deep · 27 km away

Before

1. 2.7115 km W of Ferndale, CaliforniaSat, Jul 24, 7:43 PM PDT · 16140 days ago · 5 km deep · 28 km away
2. 3.399 km W of Ferndale, CaliforniaMon, Jul 19, 11:27 PM PDT · 16145 days ago · 8 km deep · 41 km away
3. 2.575 km WSW of Ferndale, CaliforniaFri, Jul 16, 5:55 AM PDT · 16149 days ago · 4 km deep · 70 km away
4. 3.3166 km W of Ferndale, CaliforniaSat, Jul 10, 7:33 AM PDT · 16155 days ago · 4 km deep · 27 km away
5. 2.491 km W of Trinidad, CaliforniaWed, Jul 7, 10:03 PM PDT · 16157 days ago · 5 km deep · 87 km away
6. 2.7143 km W of Ferndale, CaliforniaTue, Jul 6, 7:08 AM PDT · 16159 days ago · 5 km deep · 6 km away
7. 2.1192 km W of Ferndale, CaliforniaTue, Jul 6, 7:07 AM PDT · 16159 days ago · 5 km deep · 55 km away
8. 2.178 km W of Ferndale, CaliforniaThu, Jul 1, 4:55 PM PDT · 16163 days ago · 5 km deep · 63 km away
9. 3.4126 km W of Ferndale, CaliforniaTue, Jun 29, 4:22 AM PDT · 16166 days ago · 59 km deep · 14 km away
10. 1.968 km W of Indianola, CaliforniaMon, Jun 28, 2:02 PM PDT · 16166 days ago · 7 km deep · 81 km away
11. 2.2102 km W of Ferndale, CaliforniaSat, Jun 26, 10:30 PM PDT · 16168 days ago · 4 km deep · 41 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc1076566. Read Fri, Oct 2, 2026, 3:29 AM UTC.