M3.1 earthquake 4 km NNW of Aptos, California

Magnitude

3.1 (Md, duration), minor

Magnitude from

Northern California Seismic System

Local time

Tue, Oct 17, 1989, 6:00 PM PDT

UTC

1989-10-18 01:00:50 UTC

Depth

15.4 km (9.6 mi), shallow

Epicenter

37.019° N, 121.913° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 1.2 km horizontally, 1.8 km in depth

Magnitude uncertainty

±0.26

Depth from

From location

Station coverage gap

132°

Stations used

22

• Aptos, CaliforniaPopulation 6,220. Forecast5 kmNNW
• Capitola, CaliforniaPopulation 10,189. Forecast6 kmNE
• San Jose, CaliforniaPopulation 997,368. Forecast36 kmS
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast468 kmNW

After

1. 2.48 km N of Day Valley, CaliforniaTue, Oct 17, 6:01 PM PDT · 13501 days ago · 3 km deep · 12 km away
2. 3.11 km NE of Interlaken, CaliforniaTue, Oct 17, 6:01 PM PDT · 13501 days ago · 14 km deep · 18 km away
3. 2.83 km NW of Lexington Hills, CaliforniaTue, Oct 17, 6:02 PM PDT · 13501 days ago · 8 km deep · 20 km away
4. 2.42 km WNW of Lexington Hills, CaliforniaTue, Oct 17, 6:03 PM PDT · 13501 days ago · 7 km deep · 19 km away
5. 2.25 km S of Lexington Hills, CaliforniaTue, Oct 17, 6:03 PM PDT · 13501 days ago · 10 km deep · 12 km away
6. 3.78 km NNE of Day Valley, CaliforniaTue, Oct 17, 6:03 PM PDT · 13501 days ago · 3 km deep · 12 km away
7. 3.13 km SSW of Lexington Hills, CaliforniaTue, Oct 17, 6:05 PM PDT · 13501 days ago · 13 km deep · 15 km away
8. 3.16 km N of Day Valley, CaliforniaTue, Oct 17, 6:05 PM PDT · 13501 days ago · 10 km deep · 10 km away
9. 3.14 km NE of Interlaken, CaliforniaTue, Oct 17, 6:07 PM PDT · 13501 days ago · 7 km deep · 19 km away
10. 3.66 km SW of Monte Sereno, CaliforniaTue, Oct 17, 6:08 PM PDT · 13501 days ago · 14 km deep · 23 km away
11. 3.08 km WSW of Morgan Hill, CaliforniaTue, Oct 17, 6:08 PM PDT · 13501 days ago · 0 km deep · 17 km away
12. 2.57 km NNW of Day Valley, CaliforniaTue, Oct 17, 6:08 PM PDT · 13501 days ago · 10 km deep · 8 km away
13. 2.75 km ENE of Day Valley, CaliforniaTue, Oct 17, 6:09 PM PDT · 13501 days ago · 4 km deep · 10 km away
14. 2.98 km NNW of Day Valley, CaliforniaTue, Oct 17, 6:09 PM PDT · 13501 days ago · 7 km deep · 9 km away
15. 2.35 km NNW of Day Valley, CaliforniaTue, Oct 17, 6:11 PM PDT · 13501 days ago · 14 km deep · 7 km away
16. 1.91 km W of Lexington Hills, CaliforniaTue, Oct 17, 6:12 PM PDT · 13501 days ago · 9 km deep · 18 km away
17. 2.31 km NNW of Lexington Hills, CaliforniaTue, Oct 17, 6:13 PM PDT · 13501 days ago · 6 km deep · 19 km away
18. 2.83 km ENE of Interlaken, CaliforniaTue, Oct 17, 6:13 PM PDT · 13501 days ago · 6 km deep · 20 km away
19. 2.43 km N of Interlaken, CaliforniaTue, Oct 17, 6:14 PM PDT · 13501 days ago · 12 km deep · 16 km away
20. 2.33 km WSW of Lexington Hills, CaliforniaTue, Oct 17, 6:14 PM PDT · 13501 days ago · 15 km deep · 17 km away
21. 2.01 km SE of Lexington Hills, CaliforniaTue, Oct 17, 6:14 PM PDT · 13501 days ago · 0 km deep · 16 km away
22. 3.51 km NW of Lexington Hills, CaliforniaTue, Oct 17, 6:16 PM PDT · 13501 days ago · 7 km deep · 19 km away
23. 1.81 km WNW of Lexington Hills, CaliforniaTue, Oct 17, 6:17 PM PDT · 13501 days ago · 6 km deep · 18 km away
24. 2.52 km NNW of Lexington Hills, CaliforniaTue, Oct 17, 6:17 PM PDT · 13501 days ago · 7 km deep · 19 km away
25. 2.11 km NNE of Interlaken, CaliforniaTue, Oct 17, 6:18 PM PDT · 13501 days ago · 12 km deep · 17 km away
26. 2.47 km WNW of Lexington Hills, CaliforniaTue, Oct 17, 6:19 PM PDT · 13501 days ago · 13 km deep · 22 km away
27. 2.94 km WNW of Lexington Hills, CaliforniaTue, Oct 17, 6:19 PM PDT · 13501 days ago · 11 km deep · 20 km away
28. 2.78 km W of Gilroy, CaliforniaTue, Oct 17, 6:19 PM PDT · 13501 days ago · 2 km deep · 23 km away
29. 3.15 km ESE of Lexington Hills, CaliforniaTue, Oct 17, 6:19 PM PDT · 13501 days ago · 22 km deep · 13 km away
30. 2.54 km SSW of Lexington Hills, CaliforniaTue, Oct 17, 6:20 PM PDT · 13501 days ago · 15 km deep · 14 km away
31. 2.22 km S of Lexington Hills, CaliforniaTue, Oct 17, 6:20 PM PDT · 13501 days ago · 8 km deep · 14 km away
32. 3.91 km N of Interlaken, CaliforniaTue, Oct 17, 6:21 PM PDT · 13501 days ago · 12 km deep · 17 km away
33. 2.42 km SSW of Lexington Hills, CaliforniaTue, Oct 17, 6:22 PM PDT · 13501 days ago · 5 km deep · 15 km away
34. 3.37 km SSE of Lexington Hills, CaliforniaTue, Oct 17, 6:22 PM PDT · 13501 days ago · 9 km deep · 9 km away
35. 2.61 km WNW of Lexington Hills, CaliforniaTue, Oct 17, 6:23 PM PDT · 13501 days ago · 6 km deep · 18 km away
36. 4.02 km W of Lexington Hills, CaliforniaTue, Oct 17, 6:24 PM PDT · 13501 days ago · 8 km deep · 18 km away
37. 3.63 km S of San Juan Bautista, CaliforniaTue, Oct 17, 6:24 PM PDT · 13501 days ago · 4 km deep · 41 km away
38. 3.33 km SSW of Lexington Hills, CaliforniaTue, Oct 17, 6:25 PM PDT · 13501 days ago · 14 km deep · 14 km away
39. 2.45 km NW of Day Valley, CaliforniaTue, Oct 17, 6:26 PM PDT · 13501 days ago · 12 km deep · 7 km away
40. 3.32 km WNW of Day Valley, CaliforniaTue, Oct 17, 6:26 PM PDT · 13501 days ago · 17 km deep · 4 km away
41. 2.16 km ENE of Day Valley, CaliforniaTue, Oct 17, 6:27 PM PDT · 13501 days ago · 10 km deep · 12 km away
42. 2.48 km N of Day Valley, CaliforniaTue, Oct 17, 6:28 PM PDT · 13501 days ago · 2 km deep · 12 km away
43. 3.23 km NE of Interlaken, CaliforniaTue, Oct 17, 6:28 PM PDT · 13501 days ago · 11 km deep · 18 km away
44. 2.11 km NE of Day Valley, CaliforniaTue, Oct 17, 6:28 PM PDT · 13501 days ago · 5 km deep · 6 km away
45. 2.24 km ESE of Interlaken, CaliforniaTue, Oct 17, 6:29 PM PDT · 13501 days ago · 10 km deep · 22 km away
46. 2.95 km E of Day Valley, CaliforniaTue, Oct 17, 6:29 PM PDT · 13501 days ago · 4 km deep · 10 km away
47. 1.97 km SE of Lexington Hills, CaliforniaTue, Oct 17, 6:30 PM PDT · 13501 days ago · 8 km deep · 10 km away
48. 3.24 km NW of Day Valley, CaliforniaTue, Oct 17, 6:30 PM PDT · 13501 days ago · 12 km deep · 5 km away
49. 2.33 km SW of Lexington Hills, CaliforniaTue, Oct 17, 6:31 PM PDT · 13501 days ago · 13 km deep · 16 km away
50. 2.14 km SW of Lexington Hills, CaliforniaTue, Oct 17, 6:34 PM PDT · 13501 days ago · 11 km deep · 16 km away
51. 3.06 km WNW of Day Valley, CaliforniaTue, Oct 17, 6:34 PM PDT · 13501 days ago · 15 km deep · 6 km away
52. 2.83 km S of Lexington Hills, CaliforniaTue, Oct 17, 6:36 PM PDT · 13501 days ago · 11 km deep · 13 km away
53. 2.06 km NNE of Interlaken, CaliforniaTue, Oct 17, 6:36 PM PDT · 13501 days ago · 0 km deep · 18 km away
54. 1.87 km N of Day Valley, CaliforniaTue, Oct 17, 6:38 PM PDT · 13501 days ago · 5 km deep · 10 km away
55. 1.910 km N of Day Valley, CaliforniaTue, Oct 17, 6:38 PM PDT · 13501 days ago · 3 km deep · 13 km away
56. 2.54 km NNE of Interlaken, CaliforniaTue, Oct 17, 6:38 PM PDT · 13501 days ago · 6 km deep · 19 km away
57. 2.37 km N of Day Valley, CaliforniaTue, Oct 17, 6:39 PM PDT · 13501 days ago · 4 km deep · 11 km away
58. 1.78 km N of Day Valley, CaliforniaTue, Oct 17, 6:40 PM PDT · 13501 days ago · 5 km deep · 11 km away
59. 2.38 km N of Day Valley, CaliforniaTue, Oct 17, 6:42 PM PDT · 13501 days ago · 5 km deep · 11 km away
60. 2.06 km SW of Monte Sereno, CaliforniaTue, Oct 17, 6:42 PM PDT · 13501 days ago · 16 km deep · 23 km away

The first 60 of at least 202.

Before

1. 1.71 km NW of Lexington Hills, CaliforniaTue, Oct 17, 6:00 PM PDT · 13501 days ago · 7 km deep · 19 km away
2. 1.71 km SSW of Lexington Hills, CaliforniaTue, Oct 17, 5:59 PM PDT · 13501 days ago · 5 km deep · 16 km away
3. 3.94 km S of Lexington Hills, CaliforniaTue, Oct 17, 5:58 PM PDT · 13501 days ago · 14 km deep · 13 km away
4. 2.70 km SSW of Lexington Hills, CaliforniaTue, Oct 17, 5:58 PM PDT · 13501 days ago · 10 km deep · 17 km away
5. 2.63 km NNW of Lexington Hills, CaliforniaTue, Oct 17, 5:58 PM PDT · 13501 days ago · 6 km deep · 20 km away
6. 2.80 km E of Lexington Hills, CaliforniaTue, Oct 17, 5:58 PM PDT · 13501 days ago · 5 km deep · 17 km away
7. 2.97 km N of Aromas, CaliforniaTue, Oct 17, 5:56 PM PDT · 13501 days ago · 10 km deep · 25 km away
8. 2.64 km N of Interlaken, CaliforniaTue, Oct 17, 5:55 PM PDT · 13501 days ago · 9 km deep · 17 km away
9. 2.84 km E of Zayante, CaliforniaTue, Oct 17, 5:53 PM PDT · 13501 days ago · 10 km deep · 12 km away
10. 2.78 km SSE of Lexington Hills, CaliforniaTue, Oct 17, 5:53 PM PDT · 13501 days ago · 9 km deep · 9 km away
11. 2.65 km NE of Zayante, CaliforniaTue, Oct 17, 5:49 PM PDT · 13501 days ago · 11 km deep · 13 km away
12. 2.22 km NW of Lexington Hills, CaliforniaTue, Oct 17, 5:49 PM PDT · 13501 days ago · 7 km deep · 19 km away
13. 2.67 km SW of Monte Sereno, CaliforniaTue, Oct 17, 5:48 PM PDT · 13501 days ago · 12 km deep · 23 km away
14. 2.83 km W of Lexington Hills, CaliforniaTue, Oct 17, 5:48 PM PDT · 13501 days ago · 12 km deep · 19 km away
15. 2.96 km SW of Monte Sereno, CaliforniaTue, Oct 17, 5:48 PM PDT · 13501 days ago · 15 km deep · 24 km away
16. 3.31 km S of San Juan Bautista, CaliforniaTue, Oct 17, 5:47 PM PDT · 13501 days ago · 5 km deep · 39 km away
17. 2.21 km W of Lexington Hills, CaliforniaTue, Oct 17, 5:47 PM PDT · 13501 days ago · 9 km deep · 17 km away
18. 3.00 km SE of San Juan Bautista, CaliforniaTue, Oct 17, 5:46 PM PDT · 13501 days ago · 5 km deep · 39 km away
19. 2.63 km N of Day Valley, CaliforniaTue, Oct 17, 5:46 PM PDT · 13501 days ago · 13 km deep · 7 km away
20. 4.04 km E of Interlaken, CaliforniaTue, Oct 17, 5:45 PM PDT · 13501 days ago · 8 km deep · 22 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc10090777. Read Sun, Oct 4, 2026, 6:32 PM UTC.