M1.6 earthquake 1 km E of Aromas, California

Magnitude

1.6 (Md, duration), micro

Magnitude from

Northern California Seismic System

Local time

Wed, Oct 4, 1989, 3:49 AM PDT

UTC

1989-10-04 10:49:00 UTC

Depth

8.0 km (5.0 mi), shallow

Epicenter

36.886° N, 121.626° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.2 km horizontally, 0.3 km in depth

Magnitude uncertainty

±0.17

Depth from

From location

Station coverage gap

69°

Stations used

48

• Aromas, CaliforniaPopulation 2,650. Forecast2 kmE
• Watsonville, CaliforniaPopulation 53,628. Forecast12 kmESE
• Salinas, CaliforniaPopulation 157,380. Forecast23 kmN
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast439 kmNW

After

1. 1.624 km NE of Greenfield, CaliforniaWed, Oct 4, 6:13 PM PDT · 13511 days ago · 7 km deep · 71 km away
2. 1.714 km E of Seven Trees, CaliforniaThu, Oct 5, 12:38 AM PDT · 13511 days ago · 2 km deep · 46 km away
3. 1.810 km NNE of East Foothills, CaliforniaThu, Oct 5, 1:58 AM PDT · 13511 days ago · 6 km deep · 67 km away
4. 1.623 km ENE of Soledad, CaliforniaThu, Oct 5, 9:40 AM PDT · 13511 days ago · 4 km deep · 64 km away
5. 2.028 km SE of Big Sur, CaliforniaFri, Oct 6, 12:55 AM PDT · 13510 days ago · 6 km deep · 88 km away
6. 1.629 km SE of Big Sur, CaliforniaFri, Oct 6, 12:55 AM PDT · 13510 days ago · 6 km deep · 89 km away
7. 2.48 km SSW of Tres Pinos, CaliforniaFri, Oct 6, 2:14 AM PDT · 13510 days ago · 2 km deep · 31 km away
8. 2.63 km S of Loyola, CaliforniaFri, Oct 6, 8:53 AM PDT · 13510 days ago · 6 km deep · 64 km away
9. 1.723 km ENE of Soledad, CaliforniaFri, Oct 6, 11:39 AM PDT · 13510 days ago · 4 km deep · 63 km away
10. 2.29 km S of Tres Pinos, CaliforniaFri, Oct 6, 7:52 PM PDT · 13509 days ago · 5 km deep · 33 km away
11. 2.634 km WNW of Lockwood, CaliforniaSat, Oct 7, 9:51 PM PDT · 13508 days ago · 8 km deep · 99 km away
12. 1.8Northern CaliforniaSun, Oct 8, 2:58 AM PDT · 13508 days ago · 6 km deep · 75 km away
13. 3.324 km ENE of Greenfield, CaliforniaSun, Oct 8, 5:36 AM PDT · 13508 days ago · 7 km deep · 74 km away
14. 1.821 km NE of Soledad, CaliforniaMon, Oct 9, 2:57 AM PDT · 13507 days ago · 6 km deep · 51 km away
15. 2.78 km SE of Livermore, CaliforniaMon, Oct 9, 4:51 AM PDT · 13507 days ago · 6 km deep · 83 km away
16. 2.76 km SW of Cupertino, CaliforniaMon, Oct 9, 5:06 AM PDT · 13507 days ago · 5 km deep · 61 km away
17. 3.18 km SE of Livermore, CaliforniaMon, Oct 9, 5:42 AM PDT · 13507 days ago · 6 km deep · 83 km away
18. 1.88 km E of Gilroy, CaliforniaMon, Oct 9, 12:46 PM PDT · 13507 days ago · 4 km deep · 19 km away
19. 2.28 km SE of Livermore, CaliforniaMon, Oct 9, 3:50 PM PDT · 13507 days ago · 5 km deep · 83 km away
20. 1.924 km NE of Greenfield, CaliforniaMon, Oct 9, 10:30 PM PDT · 13506 days ago · 6 km deep · 69 km away
21. 2.025 km ENE of Greenfield, CaliforniaTue, Oct 10, 11:29 AM PDT · 13506 days ago · 1 km deep · 74 km away
22. 1.97 km NE of Ridgemark, CaliforniaWed, Oct 11, 12:53 PM PDT · 13505 days ago · 5 km deep · 27 km away
23. 2.521 km NE of Soledad, CaliforniaWed, Oct 11, 8:07 PM PDT · 13504 days ago · 2 km deep · 55 km away
24. 1.69 km SSW of Carmel Valley Village, CaliforniaThu, Oct 12, 5:15 AM PDT · 13504 days ago · 6 km deep · 53 km away
25. 2.828 km SE of Tres Pinos, CaliforniaFri, Oct 13, 5:22 AM PDT · 13503 days ago · 11 km deep · 57 km away
26. 1.8Central CaliforniaFri, Oct 13, 5:27 AM PDT · 13503 days ago · 11 km deep · 57 km away
27. 2.09 km NE of San Martin, CaliforniaFri, Oct 13, 4:33 PM PDT · 13503 days ago · 7 km deep · 30 km away
28. 1.620 km ESE of East Foothills, CaliforniaFri, Oct 13, 7:39 PM PDT · 13502 days ago · 7 km deep · 47 km away
29. 1.68 km SE of Livermore, CaliforniaSun, Oct 15, 9:10 AM PDT · 13501 days ago · 6 km deep · 83 km away
30. 1.99 km SSW of Tres Pinos, CaliforniaMon, Oct 16, 12:56 PM PDT · 13500 days ago · 2 km deep · 32 km away
31. 1.924 km ENE of Greenfield, CaliforniaMon, Oct 16, 6:02 PM PDT · 13499 days ago · 6 km deep · 74 km away
32. 1.9Central CaliforniaTue, Oct 17, 12:42 AM PDT · 13499 days ago · 9 km deep · 93 km away
33. 1.616 km SSE of Tres Pinos, CaliforniaTue, Oct 17, 2:20 AM PDT · 13499 days ago · 5 km deep · 41 km away
34. 1.75 km SE of Sunol, CaliforniaTue, Oct 17, 4:30 AM PDT · 13499 days ago · 5 km deep · 77 km away
35. 6.9The 1989 Loma Prieta, California EarthquakeTue, Oct 17, 5:04 PM PDT · 13499 days ago · 17 km deep · 28 km away · felt by 13,730
36. 4.72 km SSW of Cambrian Park, CaliforniaTue, Oct 17, 5:07 PM PDT · 13499 days ago · 9 km deep · 48 km away
37. 4.74 km N of Interlaken, CaliforniaTue, Oct 17, 5:07 PM PDT · 13499 days ago · 15 km deep · 15 km away
38. 4.44 km NW of Day Valley, CaliforniaTue, Oct 17, 5:08 PM PDT · 13499 days ago · 10 km deep · 31 km away
39. 4.37 km NW of Day Valley, CaliforniaTue, Oct 17, 5:08 PM PDT · 13499 days ago · 3 km deep · 34 km away
40. 3.41 km SE of Lexington Hills, CaliforniaTue, Oct 17, 5:09 PM PDT · 13499 days ago · 2 km deep · 42 km away
41. 4.08 km NE of Corralitos, CaliforniaTue, Oct 17, 5:09 PM PDT · 13499 days ago · 5 km deep · 19 km away
42. 4.21 km W of Lexington Hills, CaliforniaTue, Oct 17, 5:11 PM PDT · 13499 days ago · 9 km deep · 45 km away
43. 4.61 km NNW of Lexington Hills, CaliforniaTue, Oct 17, 5:12 PM PDT · 13499 days ago · 5 km deep · 45 km away
44. 4.35 km WNW of Lexington Hills, CaliforniaTue, Oct 17, 5:13 PM PDT · 13499 days ago · 11 km deep · 48 km away
45. 4.42 km NE of Corralitos, CaliforniaTue, Oct 17, 5:15 PM PDT · 13499 days ago · 14 km deep · 19 km away
46. 2.52 km W of Lexington Hills, CaliforniaTue, Oct 17, 5:15 PM PDT · 13499 days ago · 7 km deep · 45 km away
47. 3.32 km NNE of Lexington Hills, CaliforniaTue, Oct 17, 5:16 PM PDT · 13499 days ago · 2 km deep · 45 km away
48. 3.01 km WNW of Lexington Hills, CaliforniaTue, Oct 17, 5:16 PM PDT · 13499 days ago · 8 km deep · 45 km away
49. 4.18 km NNW of Day Valley, CaliforniaTue, Oct 17, 5:16 PM PDT · 13499 days ago · 3 km deep · 34 km away
50. 3.44 km SW of Lexington Hills, CaliforniaTue, Oct 17, 5:17 PM PDT · 13499 days ago · 12 km deep · 44 km away
51. 4.03 km SSW of Los Gatos, CaliforniaTue, Oct 17, 5:17 PM PDT · 13499 days ago · 9 km deep · 48 km away
52. 3.34 km N of Lompico, CaliforniaTue, Oct 17, 5:17 PM PDT · 13499 days ago · 22 km deep · 47 km away
53. 2.59 km E of Lexington Hills, CaliforniaTue, Oct 17, 5:19 PM PDT · 13499 days ago · 5 km deep · 38 km away
54. 4.00 km WSW of Lexington Hills, CaliforniaTue, Oct 17, 5:19 PM PDT · 13499 days ago · 10 km deep · 44 km away
55. 3.20 km NW of Lexington Hills, CaliforniaTue, Oct 17, 5:20 PM PDT · 13499 days ago · 6 km deep · 44 km away
56. 3.54 km N of Day Valley, CaliforniaTue, Oct 17, 5:21 PM PDT · 13499 days ago · 8 km deep · 30 km away
57. 2.96 km NNW of Day Valley, CaliforniaTue, Oct 17, 5:22 PM PDT · 13499 days ago · 7 km deep · 33 km away
58. 3.12 km E of Day Valley, CaliforniaTue, Oct 17, 5:22 PM PDT · 13499 days ago · 13 km deep · 25 km away
59. 3.65 km E of Interlaken, CaliforniaTue, Oct 17, 5:22 PM PDT · 13499 days ago · 6 km deep · 8 km away
60. 3.97 km NNE of Corralitos, CaliforniaTue, Oct 17, 5:23 PM PDT · 13499 days ago · 7 km deep · 21 km away

The first 60 of 196.

Before

1. 2.321 km NE of Soledad, CaliforniaWed, Oct 4, 2:05 AM PDT · 13512 days ago · 6 km deep · 51 km away
2. 1.633 km SW of Greenfield, CaliforniaTue, Oct 3, 9:20 AM PDT · 13513 days ago · 6 km deep · 90 km away
3. 2.027 km NE of Soledad, CaliforniaTue, Oct 3, 5:44 AM PDT · 13513 days ago · 8 km deep · 60 km away
4. 2.025 km ENE of Greenfield, CaliforniaMon, Oct 2, 1:43 PM PDT · 13514 days ago · 1 km deep · 75 km away
5. 1.724 km NE of Greenfield, CaliforniaMon, Oct 2, 5:32 AM PDT · 13514 days ago · 5 km deep · 70 km away
6. 1.724 km NE of Greenfield, CaliforniaMon, Oct 2, 5:16 AM PDT · 13514 days ago · 5 km deep · 69 km away
7. 2.124 km NE of Greenfield, CaliforniaMon, Oct 2, 5:14 AM PDT · 13514 days ago · 5 km deep · 69 km away
8. 1.921 km NE of Soledad, CaliforniaSun, Oct 1, 7:06 PM PDT · 13514 days ago · 2 km deep · 55 km away
9. 2.121 km NE of Soledad, CaliforniaSun, Oct 1, 4:40 PM PDT · 13515 days ago · 2 km deep · 55 km away
10. 2.121 km NE of Soledad, CaliforniaSun, Oct 1, 3:19 PM PDT · 13515 days ago · 3 km deep · 55 km away
11. 3.122 km NE of Soledad, CaliforniaSun, Oct 1, 3:09 PM PDT · 13515 days ago · 3 km deep · 56 km away
12. 3.121 km NE of Soledad, CaliforniaSun, Oct 1, 3:08 PM PDT · 13515 days ago · 3 km deep · 55 km away
13. 1.915 km E of Seven Trees, CaliforniaSun, Oct 1, 11:21 AM PDT · 13515 days ago · 5 km deep · 45 km away
14. 1.531 km WNW of Three Rocks, CaliforniaSun, Oct 1, 8:07 AM PDT · 13515 days ago · 6 km deep · 87 km away
15. 2.06 km SE of Tres Pinos, CaliforniaSun, Oct 1, 6:20 AM PDT · 13515 days ago · 10 km deep · 36 km away
16. 2.520 km NE of East Foothills, CaliforniaFri, Sep 29, 5:28 PM PDT · 13517 days ago · 6 km deep · 66 km away
17. 1.66 km SSW of Ridgemark, CaliforniaFri, Sep 29, 6:00 AM PDT · 13517 days ago · 9 km deep · 25 km away
18. 3.225 km NE of Soledad, CaliforniaThu, Sep 28, 8:42 AM PDT · 13518 days ago · 9 km deep · 58 km away
19. 1.68 km NNE of East Foothills, CaliforniaWed, Sep 27, 10:20 PM PDT · 13518 days ago · 7 km deep · 64 km away
20. 2.327 km E of Tres Pinos, CaliforniaWed, Sep 27, 10:06 PM PDT · 13518 days ago · 1 km deep · 56 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc144971. Read Fri, Oct 2, 2026, 12:25 PM UTC.