M1.9 earthquake 39 km SW of Ferndale, California

Magnitude

1.9 (Md, duration), micro

Magnitude from

Northern California Seismic System

Local time

Sat, Apr 18, 1981, 10:37 AM PST

UTC

1981-04-18 18:37:53 UTC

Depth

19.8 km (12.3 mi), shallow

Epicenter

40.320° N, 124.580° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 3.3 km horizontally, 1.5 km in depth

Depth from

From location

Station coverage gap

270°, poorly surrounded by stations

Stations used

8

• Ferndale, CaliforniaPopulation 1,369. Forecast39 kmSW
• Fortuna, CaliforniaPopulation 12,000. Forecast47 kmSW
• Chico, CaliforniaPopulation 121,345. Forecast243 kmWNW
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast894 kmNW

After

1. 2.24 km SSW of Westhaven-Moonstone, CaliforniaSat, Apr 18, 12:18 PM PST · 16604 days ago · 15 km deep · 85 km away
2. 2.020 km W of Big Lagoon, CaliforniaSat, Apr 18, 7:43 PM PST · 16604 days ago · 8 km deep · 92 km away
3. 1.725 km W of Big Lagoon, CaliforniaSat, Apr 18, 9:16 PM PST · 16604 days ago · 3 km deep · 93 km away
4. 2.13 km SW of Loleta, CaliforniaSun, Apr 19, 3:56 AM PST · 16603 days ago · 21 km deep · 43 km away
5. 1.540 km SW of Ferndale, CaliforniaSun, Apr 19, 8:50 AM PST · 16603 days ago · 23 km deep · 1 km away
6. 1.811 km WSW of Mad River, CaliforniaSun, Apr 19, 4:04 PM PST · 16603 days ago · -1 km deep · 81 km away
7. 2.1near the coast of Northern CaliforniaSun, Apr 19, 5:16 PM PST · 16603 days ago · 21 km deep · 28 km away
8. 1.634 km SW of Ferndale, CaliforniaSun, Apr 19, 8:53 PM PST · 16603 days ago · 21 km deep · 5 km away
9. 2.99 km WNW of McKinleyville, CaliforniaSun, Apr 19, 10:22 PM PST · 16603 days ago · 46 km deep · 79 km away
10. 3.2near the coast of Northern CaliforniaSun, Apr 19, 11:23 PM PST · 16603 days ago · 25 km deep · 4 km away
11. 1.622 km SE of Indianola, CaliforniaMon, Apr 20, 12:53 AM PST · 16602 days ago · 22 km deep · 74 km away
12. 1.624 km WNW of Samoa, CaliforniaMon, Apr 20, 2:59 AM PST · 16602 days ago · 14 km deep · 70 km away
13. 2.437 km SW of Ferndale, CaliforniaMon, Apr 20, 8:52 AM PST · 16602 days ago · 29 km deep · 1 km away
14. 1.921 km WNW of Manila, CaliforniaMon, Apr 20, 1:15 PM PST · 16602 days ago · 17 km deep · 71 km away
15. 2.422 km SE of Indianola, CaliforniaMon, Apr 20, 3:02 PM PST · 16602 days ago · 21 km deep · 73 km away
16. 3.540 km SW of Ferndale, CaliforniaMon, Apr 20, 3:44 PM PST · 16602 days ago · 27 km deep · 4 km away
17. 2.340 km SW of Ferndale, CaliforniaMon, Apr 20, 5:00 PM PST · 16602 days ago · 27 km deep · 4 km away
18. 1.717 km NE of Redcrest, CaliforniaMon, Apr 20, 6:13 PM PST · 16602 days ago · 26 km deep · 68 km away
19. 1.830 km SW of Scotia, CaliforniaMon, Apr 20, 6:26 PM PST · 16602 days ago · 13 km deep · 20 km away
20. 2.220 km SSW of Scotia, CaliforniaTue, Apr 21, 2:54 AM PST · 16601 days ago · 4 km deep · 33 km away
21. 2.24 km SW of Loleta, CaliforniaTue, Apr 21, 10:38 AM PST · 16601 days ago · 19 km deep · 43 km away
22. 1.844 km SW of Ferndale, CaliforniaWed, Apr 22, 1:08 AM PST · 16600 days ago · 28 km deep · 5 km away
23. 2.344 km SW of Ferndale, CaliforniaWed, Apr 22, 1:21 AM PST · 16600 days ago · 18 km deep · 8 km away
24. 3.487 km WSW of Ferndale, CaliforniaWed, Apr 22, 3:43 AM PST · 16600 days ago · 5 km deep · 60 km away
25. 1.69 km WNW of Mad River, CaliforniaWed, Apr 22, 4:31 AM PST · 16600 days ago · 5 km deep · 83 km away
26. 3.138 km SW of Ferndale, CaliforniaWed, Apr 22, 8:37 AM PST · 16600 days ago · 27 km deep · 2 km away
27. 1.642 km SW of Ferndale, CaliforniaWed, Apr 22, 11:40 AM PST · 16600 days ago · 27 km deep · 5 km away
28. 2.536 km SSW of Ferndale, CaliforniaWed, Apr 22, 4:47 PM PST · 16600 days ago · 25 km deep · 11 km away
29. 2.794 km W of Ferndale, CaliforniaWed, Apr 22, 11:22 PM PST · 16600 days ago · 4 km deep · 73 km away
30. 2.144 km SW of Ferndale, CaliforniaThu, Apr 23, 12:50 AM PST · 16599 days ago · 18 km deep · 8 km away
31. 2.038 km SW of Ferndale, CaliforniaThu, Apr 23, 5:40 AM PST · 16599 days ago · 21 km deep · 3 km away
32. 2.428 km SW of Ferndale, CaliforniaThu, Apr 23, 8:22 AM PST · 16599 days ago · 18 km deep · 11 km away
33. 1.938 km SW of Ferndale, CaliforniaFri, Apr 24, 9:59 AM PST · 16598 days ago · 25 km deep · 3 km away
34. 2.022 km WSW of Ferndale, CaliforniaFri, Apr 24, 11:10 AM PST · 16598 days ago · 24 km deep · 18 km away
35. 1.9115 km W of Ferndale, CaliforniaFri, Apr 24, 4:58 PM PST · 16598 days ago · 4 km deep · 87 km away
36. 1.77 km NE of Mad River, CaliforniaFri, Apr 24, 7:36 PM PST · 16598 days ago · 30 km deep · 97 km away
37. 2.220 km WSW of Weott, CaliforniaSat, Apr 25, 1:04 PM PST · 16597 days ago · 11 km deep · 40 km away
38. 2.84 km NW of Redway, CaliforniaSat, Apr 25, 1:54 PM PST · 16597 days ago · 19 km deep · 64 km away
39. 1.939 km WSW of Ferndale, CaliforniaSat, Apr 25, 4:57 PM PST · 16597 days ago · 15 km deep · 22 km away
40. 1.610 km S of Scotia, CaliforniaSun, Apr 26, 1:39 AM PST · 16596 days ago · 36 km deep · 40 km away
41. 2.226 km WSW of Ferndale, CaliforniaSun, Apr 26, 7:52 PM PDT · 16596 days ago · 26 km deep · 16 km away
42. 1.8near the coast of Northern CaliforniaSun, Apr 26, 7:55 PM PDT · 16596 days ago · 8 km deep · 18 km away
43. 1.67 km S of Ferndale, CaliforniaMon, Apr 27, 12:18 AM PDT · 16596 days ago · 17 km deep · 34 km away
44. 1.745 km WNW of Shelter Cove, CaliforniaMon, Apr 27, 2:44 AM PDT · 16595 days ago · 5 km deep · 12 km away
45. 2.56 km NW of Redcrest, CaliforniaTue, Apr 28, 11:33 AM PDT · 16594 days ago · -1 km deep · 50 km away
46. 1.737 km SW of Ferndale, CaliforniaTue, Apr 28, 11:20 PM PDT · 16594 days ago · 31 km deep · 4 km away
47. 2.1125 km W of Ferndale, CaliforniaWed, Apr 29, 10:43 PM PDT · 16593 days ago · 5 km deep · 98 km away
48. 1.642 km SW of Ferndale, CaliforniaWed, Apr 29, 11:16 PM PDT · 16593 days ago · 25 km deep · 4 km away
49. 1.811 km SW of Ferndale, CaliforniaFri, May 1, 11:07 AM PDT · 16591 days ago · 25 km deep · 27 km away
50. 2.226 km WNW of Manila, CaliforniaSat, May 2, 5:04 AM PDT · 16590 days ago · 2 km deep · 72 km away
51. 1.914 km WSW of Ferndale, CaliforniaSat, May 2, 10:50 AM PDT · 16590 days ago · 19 km deep · 26 km away
52. 2.434 km SW of Ferndale, CaliforniaSun, May 3, 5:30 AM PDT · 16589 days ago · 28 km deep · 5 km away
53. 1.522 km SSW of Ferndale, CaliforniaSun, May 3, 8:27 AM PDT · 16589 days ago · 21 km deep · 20 km away
54. 2.230 km WSW of Ferndale, CaliforniaSun, May 3, 10:59 AM PDT · 16589 days ago · 23 km deep · 16 km away
55. 1.69 km W of Mad River, CaliforniaSun, May 3, 1:30 PM PDT · 16589 days ago · 4 km deep · 82 km away
56. 1.816 km E of Hydesville, CaliforniaSun, May 3, 8:30 PM PDT · 16589 days ago · 92 km deep · 63 km away
57. 2.597 km WSW of Ferndale, CaliforniaMon, May 4, 4:40 PM PDT · 16588 days ago · 5 km deep · 69 km away
58. 3.295 km W of Ferndale, CaliforniaMon, May 4, 6:06 PM PDT · 16588 days ago · 8 km deep · 68 km away
59. 3.437 km SW of Ferndale, CaliforniaMon, May 4, 11:03 PM PDT · 16588 days ago · 26 km deep · 3 km away
60. 2.122 km W of Ferndale, CaliforniaThu, May 7, 12:05 PM PDT · 16585 days ago · 21 km deep · 25 km away

The first 60 of 181.

Before

1. 1.647 km SW of Ferndale, CaliforniaSat, Apr 18, 7:52 AM PST · 16604 days ago · 13 km deep · 9 km away
2. 3.849 km WSW of Ferndale, CaliforniaSat, Apr 18, 5:17 AM PST · 16604 days ago · 18 km deep · 19 km away
3. 2.639 km SW of Ferndale, CaliforniaFri, Apr 17, 8:24 PM PST · 16605 days ago · 23 km deep · 1 km away
4. 2.938 km SW of Ferndale, CaliforniaFri, Apr 17, 5:26 PM PST · 16605 days ago · 20 km deep · 2 km away
5. 1.534 km SW of Scotia, CaliforniaFri, Apr 17, 1:32 PM PST · 16605 days ago · 12 km deep · 18 km away
6. 2.836 km SW of Ferndale, CaliforniaThu, Apr 16, 5:40 PM PST · 16606 days ago · 26 km deep · 4 km away
7. 4.2126 km W of Ferndale, CaliforniaThu, Apr 16, 5:31 PM PST · 16606 days ago · 5 km deep · 99 km away
8. 2.942 km W of Trinidad, CaliforniaThu, Apr 16, 11:04 AM PST · 16606 days ago · 16 km deep · 78 km away
9. 1.937 km SW of Ferndale, CaliforniaWed, Apr 15, 10:04 AM PST · 16607 days ago · 25 km deep · 3 km away
10. 2.341 km SW of Ferndale, CaliforniaWed, Apr 15, 7:31 AM PST · 16607 days ago · 24 km deep · 5 km away
11. 1.511 km W of Mad River, CaliforniaTue, Apr 14, 5:34 PM PST · 16608 days ago · 0 km deep · 80 km away
12. 1.837 km SW of Ferndale, CaliforniaTue, Apr 14, 5:34 PM PST · 16608 days ago · 21 km deep · 2 km away
13. 2.038 km SW of Ferndale, CaliforniaTue, Apr 14, 4:26 PM PST · 16608 days ago · 21 km deep · 1 km away
14. 1.527 km SSW of Ferndale, CaliforniaTue, Apr 14, 2:01 PM PST · 16608 days ago · 16 km deep · 13 km away
15. 1.73 km NNE of Alderpoint, CaliforniaTue, Apr 14, 1:19 PM PST · 16608 days ago · 33 km deep · 84 km away
16. 2.236 km SW of Ferndale, CaliforniaTue, Apr 14, 1:00 AM PST · 16608 days ago · 27 km deep · 4 km away
17. 2.365 km W of Indianola, CaliforniaTue, Apr 14, 12:55 AM PST · 16608 days ago · 20 km deep · 61 km away
18. 3.137 km SW of Ferndale, CaliforniaMon, Apr 13, 8:41 PM PST · 16609 days ago · 27 km deep · 2 km away
19. 1.7near the coast of Northern CaliforniaMon, Apr 13, 3:51 PM PST · 16609 days ago · 24 km deep · 3 km away
20. 4.336 km SW of Ferndale, CaliforniaMon, Apr 13, 2:16 PM PST · 16609 days ago · 23 km deep · 3 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc1062697. Read Sat, Oct 3, 2026, 8:18 PM UTC.