M2.3 earthquake 1 km E of Aromas, California

Magnitude

2.3 (Md, duration), micro

Magnitude from

Northern California Seismic System

Local time

Mon, Sep 17, 1990, 12:20 AM PDT

UTC

1990-09-17 07:20:05 UTC

Depth

8.7 km (5.4 mi), shallow

Epicenter

36.890° N, 121.631° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.1 km horizontally, 0.3 km in depth

Magnitude uncertainty

±0.14

Depth from

From location

Station coverage gap

50°

Stations used

78

• Aromas, CaliforniaPopulation 2,650. Forecast1 kmE
• Watsonville, CaliforniaPopulation 53,628. Forecast11 kmESE
• Salinas, CaliforniaPopulation 157,380. Forecast24 kmN
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast440 kmNW

After

1. 2.021 km SSE of Tres Pinos, CaliforniaMon, Sep 17, 1:37 AM PDT · 13166 days ago · 4 km deep · 48 km away
2. 3.015 km SSE of Tres Pinos, CaliforniaMon, Sep 17, 6:04 AM PDT · 13166 days ago · 7 km deep · 41 km away
3. 1.9Central CaliforniaMon, Sep 17, 6:44 AM PDT · 13166 days ago · 7 km deep · 41 km away
4. 1.9Northern CaliforniaMon, Sep 17, 6:58 AM PDT · 13165 days ago · 13 km deep · 29 km away
5. 1.630 km SE of Tres Pinos, CaliforniaMon, Sep 17, 7:25 AM PDT · 13165 days ago · 9 km deep · 60 km away
6. 1.6Central CaliforniaMon, Sep 17, 7:50 AM PDT · 13165 days ago · 6 km deep · 41 km away
7. 3.0Central CaliforniaMon, Sep 17, 9:00 AM PDT · 13165 days ago · 7 km deep · 41 km away
8. 1.615 km SSE of Tres Pinos, CaliforniaMon, Sep 17, 9:07 AM PDT · 13165 days ago · 6 km deep · 41 km away
9. 2.121 km NE of Soledad, CaliforniaMon, Sep 17, 10:11 AM PDT · 13165 days ago · 7 km deep · 57 km away
10. 2.4Central CaliforniaMon, Sep 17, 12:01 PM PDT · 13165 days ago · 9 km deep · 0 km away
11. 2.16 km NE of East Foothills, CaliforniaMon, Sep 17, 5:24 PM PDT · 13165 days ago · 7 km deep · 61 km away
12. 1.95 km ESE of Interlaken, CaliforniaMon, Sep 17, 6:03 PM PDT · 13165 days ago · 10 km deep · 7 km away
13. 1.712 km S of Tres Pinos, CaliforniaMon, Sep 17, 7:15 PM PDT · 13165 days ago · 4 km deep · 37 km away
14. 1.515 km SSE of Tres Pinos, CaliforniaTue, Sep 18, 5:05 AM PDT · 13165 days ago · 6 km deep · 41 km away
15. 1.923 km ENE of Soledad, CaliforniaTue, Sep 18, 8:39 AM PDT · 13164 days ago · 4 km deep · 64 km away
16. 1.828 km SW of South Dos Palos, CaliforniaTue, Sep 18, 6:37 PM PDT · 13164 days ago · 5 km deep · 69 km away
17. 1.629 km SW of South Dos Palos, CaliforniaTue, Sep 18, 7:06 PM PDT · 13164 days ago · 1 km deep · 68 km away
18. 1.521 km NE of Soledad, CaliforniaWed, Sep 19, 3:17 AM PDT · 13164 days ago · 2 km deep · 56 km away
19. 1.79 km N of Hollister, CaliforniaWed, Sep 19, 3:57 AM PDT · 13164 days ago · 8 km deep · 19 km away
20. 2.85 km WNW of San Juan Bautista, CaliforniaWed, Sep 19, 9:41 AM PDT · 13163 days ago · 7 km deep · 5 km away
21. 2.214 km SSE of Tres Pinos, CaliforniaWed, Sep 19, 3:56 PM PDT · 13163 days ago · 7 km deep · 40 km away
22. 1.714 km S of Tres Pinos, CaliforniaWed, Sep 19, 5:56 PM PDT · 13163 days ago · 8 km deep · 40 km away
23. 2.38 km N of East Foothills, CaliforniaWed, Sep 19, 7:19 PM PDT · 13163 days ago · 6 km deep · 65 km away
24. 1.725 km ENE of Greenfield, CaliforniaThu, Sep 20, 6:00 AM PDT · 13163 days ago · -1 km deep · 75 km away
25. 3.034 km ENE of Soledad, CaliforniaThu, Sep 20, 8:22 AM PDT · 13162 days ago · 5 km deep · 70 km away
26. 2.02 km E of Aromas, CaliforniaThu, Sep 20, 8:41 AM PDT · 13162 days ago · 7 km deep · 1 km away
27. 2.037 km WSW of Three Rocks, CaliforniaFri, Sep 21, 1:14 AM PDT · 13162 days ago · 10 km deep · 91 km away
28. 2.06 km NE of East Foothills, CaliforniaFri, Sep 21, 2:03 AM PDT · 13162 days ago · 10 km deep · 62 km away
29. 1.57 km SSE of San Juan Bautista, CaliforniaFri, Sep 21, 2:38 AM PDT · 13162 days ago · 8 km deep · 17 km away
30. 1.75 km NE of Amesti, CaliforniaFri, Sep 21, 3:37 AM PDT · 13162 days ago · 11 km deep · 16 km away
31. 2.121 km NE of Soledad, CaliforniaFri, Sep 21, 4:52 PM PDT · 13161 days ago · 7 km deep · 59 km away
32. 3.214 km SSE of Tres Pinos, CaliforniaSat, Sep 22, 2:12 PM PDT · 13160 days ago · 8 km deep · 40 km away
33. 3.214 km SSE of Tres Pinos, CaliforniaSat, Sep 22, 2:14 PM PDT · 13160 days ago · 8 km deep · 40 km away
34. 3.115 km SSE of Tres Pinos, CaliforniaSat, Sep 22, 3:11 PM PDT · 13160 days ago · 8 km deep · 40 km away
35. 1.736 km SSW of South Dos Palos, CaliforniaSat, Sep 22, 5:04 PM PDT · 13160 days ago · 1 km deep · 73 km away
36. 2.014 km S of Tres Pinos, CaliforniaSat, Sep 22, 6:49 PM PDT · 13160 days ago · 7 km deep · 40 km away
37. 1.815 km SSE of Tres Pinos, CaliforniaSat, Sep 22, 7:08 PM PDT · 13160 days ago · 7 km deep · 41 km away
38. 3.63 km S of San Juan Bautista, CaliforniaSat, Sep 22, 7:59 PM PDT · 13160 days ago · 7 km deep · 12 km away
39. 3.24 km SSE of San Juan Bautista, CaliforniaSat, Sep 22, 8:00 PM PDT · 13160 days ago · 5 km deep · 14 km away
40. 3.03 km S of San Juan Bautista, CaliforniaSat, Sep 22, 9:06 PM PDT · 13160 days ago · 6 km deep · 12 km away
41. 2.65 km SSE of San Juan Bautista, CaliforniaSat, Sep 22, 10:09 PM PDT · 13160 days ago · 6 km deep · 14 km away
42. 1.93 km S of San Juan Bautista, CaliforniaSat, Sep 22, 11:23 PM PDT · 13160 days ago · 6 km deep · 12 km away
43. 1.511 km S of Tres Pinos, CaliforniaSun, Sep 23, 12:58 AM PDT · 13160 days ago · 3 km deep · 36 km away
44. 2.26 km E of East Foothills, CaliforniaSun, Sep 23, 1:18 AM PDT · 13160 days ago · 6 km deep · 56 km away
45. 3.22 km SE of Ladera, CaliforniaSun, Sep 23, 6:35 AM PDT · 13160 days ago · 7 km deep · 73 km away
46. 1.514 km SSE of Tres Pinos, CaliforniaMon, Sep 24, 5:44 AM PDT · 13159 days ago · 6 km deep · 40 km away
47. 2.014 km E of Seven Trees, CaliforniaMon, Sep 24, 6:00 AM PDT · 13159 days ago · 6 km deep · 46 km away
48. 2.62 km ESE of Aromas, CaliforniaMon, Sep 24, 9:44 AM PDT · 13158 days ago · 6 km deep · 2 km away
49. 1.92 km ESE of Aromas, CaliforniaMon, Sep 24, 11:32 AM PDT · 13158 days ago · 7 km deep · 2 km away
50. 1.73 km S of San Juan Bautista, CaliforniaMon, Sep 24, 2:05 PM PDT · 13158 days ago · 6 km deep · 12 km away
51. 2.32 km SE of Ladera, CaliforniaTue, Sep 25, 11:22 AM PDT · 13157 days ago · 6 km deep · 74 km away
52. 3.52 km SE of Ladera, CaliforniaTue, Sep 25, 7:53 PM PDT · 13157 days ago · 7 km deep · 73 km away
53. 1.913 km S of Tres Pinos, CaliforniaWed, Sep 26, 9:09 AM PDT · 13156 days ago · 4 km deep · 38 km away
54. 1.721 km SW of Diablo Grande, CaliforniaWed, Sep 26, 3:18 PM PDT · 13156 days ago · 7 km deep · 46 km away
55. 2.37 km SSE of Gilroy, CaliforniaWed, Sep 26, 8:00 PM PDT · 13156 days ago · 4 km deep · 10 km away
56. 1.715 km SSE of Tres Pinos, CaliforniaThu, Sep 27, 10:09 AM PDT · 13155 days ago · 7 km deep · 40 km away
57. 1.72 km N of Scotts Valley, CaliforniaThu, Sep 27, 1:10 PM PDT · 13155 days ago · 10 km deep · 39 km away
58. 1.52 km N of Scotts Valley, CaliforniaThu, Sep 27, 2:47 PM PDT · 13155 days ago · 10 km deep · 40 km away
59. 1.74 km WNW of San Juan Bautista, CaliforniaThu, Sep 27, 7:26 PM PDT · 13155 days ago · 6 km deep · 5 km away
60. 2.122 km NE of Soledad, CaliforniaFri, Sep 28, 2:29 PM PDT · 13154 days ago · 3 km deep · 54 km away

The first 60 of 176.

Before

1. 2.117 km SSE of Livermore, CaliforniaSun, Sep 16, 11:45 PM PDT · 13166 days ago · 7 km deep · 73 km away
2. 1.91 km E of Aromas, CaliforniaSun, Sep 16, 9:26 PM PDT · 13166 days ago · 8 km deep · 0 km away
3. 2.322 km NE of Soledad, CaliforniaSun, Sep 16, 8:01 PM PDT · 13166 days ago · 3 km deep · 54 km away
4. 1.619 km SSE of Tres Pinos, CaliforniaSun, Sep 16, 4:31 PM PDT · 13166 days ago · 6 km deep · 46 km away
5. 2.214 km SSE of Tres Pinos, CaliforniaSat, Sep 15, 11:12 AM PDT · 13167 days ago · 5 km deep · 40 km away
6. 1.612 km S of Tres Pinos, CaliforniaSat, Sep 15, 10:09 AM PDT · 13167 days ago · 4 km deep · 38 km away
7. 1.812 km S of Tres Pinos, CaliforniaFri, Sep 14, 3:00 PM PDT · 13168 days ago · 3 km deep · 37 km away
8. 2.01 km SW of Hollister, CaliforniaFri, Sep 14, 8:19 AM PDT · 13168 days ago · 8 km deep · 20 km away
9. 2.312 km S of Tres Pinos, CaliforniaFri, Sep 14, 7:30 AM PDT · 13168 days ago · 4 km deep · 37 km away
10. 2.215 km SSE of Tres Pinos, CaliforniaThu, Sep 13, 1:02 PM PDT · 13169 days ago · 6 km deep · 41 km away
11. 1.6Northern CaliforniaThu, Sep 13, 9:09 AM PDT · 13169 days ago · 6 km deep · 76 km away
12. 1.57 km SW of Monte Sereno, CaliforniaThu, Sep 13, 1:03 AM PDT · 13170 days ago · 13 km deep · 51 km away
13. 2.512 km S of Tres Pinos, CaliforniaWed, Sep 12, 2:17 PM PDT · 13170 days ago · 4 km deep · 38 km away
14. 1.721 km NE of Soledad, CaliforniaTue, Sep 11, 11:34 PM PDT · 13171 days ago · 6 km deep · 56 km away
15. 1.616 km SE of Livermore, CaliforniaTue, Sep 11, 12:01 PM PDT · 13171 days ago · 7 km deep · 75 km away
16. 1.79 km ESE of Lexington Hills, CaliforniaTue, Sep 11, 9:49 AM PDT · 13171 days ago · 2 km deep · 34 km away
17. 1.84 km ESE of Interlaken, CaliforniaTue, Sep 11, 5:39 AM PDT · 13172 days ago · 10 km deep · 8 km away
18. 1.94 km WNW of Day Valley, CaliforniaTue, Sep 11, 3:25 AM PDT · 13172 days ago · 16 km deep · 31 km away
19. 2.58 km SSE of San Juan Bautista, CaliforniaTue, Sep 11, 2:11 AM PDT · 13172 days ago · 7 km deep · 17 km away
20. 2.015 km SSE of Tres Pinos, CaliforniaTue, Sep 11, 1:46 AM PDT · 13172 days ago · 6 km deep · 40 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc164193. Read Sun, Oct 4, 2026, 1:14 AM UTC.