M1.8 earthquake 2 km E of Aromas, California

Magnitude

1.8 (Md, duration), micro

Magnitude from

Northern California Seismic System

Local time

Thu, Sep 30, 1976, 8:31 PM PDT

UTC

1976-10-01 03:31:13 UTC

Depth

4.1 km (2.6 mi), shallow

Epicenter

36.889° N, 121.620° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.2 km horizontally, 0.4 km in depth

Magnitude uncertainty

±0.48

Depth from

From location

Station coverage gap

69°

Stations used

23

• Aromas, CaliforniaPopulation 2,650. Forecast2 kmE
• Watsonville, CaliforniaPopulation 53,628. Forecast12 kmE
• Salinas, CaliforniaPopulation 157,380. Forecast24 kmN
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast439 kmNW

After

1. 1.625 km SE of Tres Pinos, CaliforniaThu, Sep 30, 11:37 PM PDT · 18263 days ago · 5 km deep · 52 km away
2. 1.96 km ENE of Interlaken, CaliforniaFri, Oct 1, 4:56 AM PDT · 18263 days ago · 10 km deep · 10 km away
3. 3.126 km NE of Soledad, CaliforniaSat, Oct 2, 1:25 AM PDT · 18262 days ago · 7 km deep · 59 km away
4. 3.011 km S of Tres Pinos, CaliforniaSat, Oct 2, 2:18 AM PDT · 18262 days ago · 2 km deep · 35 km away
5. 2.17 km NNE of Interlaken, CaliforniaSat, Oct 2, 5:49 PM PDT · 18261 days ago · 6 km deep · 16 km away
6. 2.17 km NNE of Interlaken, CaliforniaSun, Oct 3, 9:05 AM PDT · 18260 days ago · 6 km deep · 16 km away
7. 2.05 km NNE of Tres Pinos, CaliforniaSun, Oct 3, 11:43 AM PDT · 18260 days ago · 6 km deep · 28 km away
8. 2.13 km SSW of Los Altos Hills, CaliforniaMon, Oct 4, 12:20 AM PDT · 18260 days ago · 5 km deep · 69 km away
9. 2.23 km SSW of Los Altos Hills, CaliforniaMon, Oct 4, 1:21 AM PDT · 18260 days ago · 6 km deep · 69 km away
10. 2.04 km SE of Tres Pinos, CaliforniaMon, Oct 4, 4:14 AM PDT · 18260 days ago · 9 km deep · 34 km away
11. 1.930 km SSW of South Dos Palos, CaliforniaMon, Oct 4, 8:52 AM PDT · 18259 days ago · 11 km deep · 74 km away
12. 2.923 km NE of King City, CaliforniaMon, Oct 4, 8:56 PM PDT · 18259 days ago · 6 km deep · 82 km away
13. 1.65 km NE of East Foothills, CaliforniaTue, Oct 5, 10:05 AM PDT · 18258 days ago · 3 km deep · 61 km away
14. 1.922 km ESE of Tres Pinos, CaliforniaTue, Oct 5, 12:01 PM PDT · 18258 days ago · 5 km deep · 51 km away
15. 1.78 km NE of Ridgemark, CaliforniaWed, Oct 6, 6:28 AM PDT · 18258 days ago · 3 km deep · 29 km away
16. 2.16 km S of Volta, CaliforniaWed, Oct 6, 7:32 AM PDT · 18258 days ago · 10 km deep · 63 km away
17. 2.09 km NW of Hollister, CaliforniaWed, Oct 6, 12:20 PM PDT · 18257 days ago · 4 km deep · 14 km away
18. 3.313 km S of Tracy, CaliforniaWed, Oct 6, 1:54 PM PDT · 18257 days ago · 3 km deep · 83 km away
19. 1.96 km SE of Lexington Hills, CaliforniaWed, Oct 6, 2:19 PM PDT · 18257 days ago · 12 km deep · 37 km away
20. 1.68 km S of Livermore, CaliforniaThu, Oct 7, 1:26 PM PDT · 18256 days ago · 5 km deep · 81 km away
21. 1.87 km NNE of Interlaken, CaliforniaThu, Oct 7, 11:23 PM PDT · 18256 days ago · 5 km deep · 16 km away
22. 2.321 km NE of Soledad, CaliforniaFri, Oct 8, 1:32 AM PDT · 18256 days ago · 5 km deep · 52 km away
23. 3.424 km NE of Greenfield, CaliforniaFri, Oct 8, 2:53 AM PDT · 18256 days ago · 5 km deep · 70 km away
24. 2.4Central CaliforniaFri, Oct 8, 3:00 AM PDT · 18256 days ago · 5 km deep · 42 km away
25. 1.77 km NNE of Interlaken, CaliforniaSat, Oct 9, 6:01 AM PDT · 18255 days ago · 6 km deep · 16 km away
26. 2.79 km S of Tres Pinos, CaliforniaSat, Oct 9, 11:58 AM PDT · 18254 days ago · 2 km deep · 33 km away
27. 2.014 km E of Seven Trees, CaliforniaSat, Oct 9, 3:19 PM PDT · 18254 days ago · 5 km deep · 46 km away
28. 2.424 km NE of Greenfield, CaliforniaSat, Oct 9, 6:59 PM PDT · 18254 days ago · 1 km deep · 71 km away
29. 1.7Central CaliforniaSat, Oct 9, 9:26 PM PDT · 18254 days ago · 7 km deep · 30 km away
30. 2.424 km NE of Greenfield, CaliforniaSun, Oct 10, 1:08 AM PDT · 18254 days ago · 1 km deep · 71 km away
31. 3.217 km SSE of Tres Pinos, CaliforniaSun, Oct 10, 3:26 AM PDT · 18254 days ago · 5 km deep · 42 km away
32. 2.11 km NNW of Portola Valley, CaliforniaSun, Oct 10, 4:46 AM PDT · 18254 days ago · 9 km deep · 79 km away
33. 2.323 km NE of Greenfield, CaliforniaSun, Oct 10, 7:32 PM PDT · 18253 days ago · 4 km deep · 70 km away
34. 1.623 km NE of Soledad, CaliforniaMon, Oct 11, 1:46 PM PDT · 18252 days ago · 7 km deep · 57 km away
35. 2.825 km ENE of Greenfield, CaliforniaTue, Oct 12, 1:42 PM PDT · 18251 days ago · 1 km deep · 75 km away
36. 1.917 km NE of East Foothills, CaliforniaTue, Oct 12, 5:04 PM PDT · 18251 days ago · 7 km deep · 67 km away
37. 2.523 km NE of Greenfield, CaliforniaTue, Oct 12, 10:57 PM PDT · 18251 days ago · 7 km deep · 69 km away
38. 1.610 km E of Seven Trees, CaliforniaWed, Oct 13, 6:06 AM PDT · 18251 days ago · 6 km deep · 46 km away
39. 3.321 km NE of Soledad, CaliforniaWed, Oct 13, 3:36 PM PDT · 18250 days ago · 4 km deep · 52 km away
40. 2.323 km NE of King City, CaliforniaThu, Oct 14, 12:13 AM PDT · 18250 days ago · 3 km deep · 85 km away
41. 1.88 km NE of San Juan Bautista, CaliforniaThu, Oct 14, 4:45 AM PDT · 18250 days ago · 6 km deep · 13 km away
42. 1.617 km NE of East Foothills, CaliforniaThu, Oct 14, 12:19 PM PDT · 18249 days ago · 7 km deep · 67 km away
43. 2.314 km SSE of Tres Pinos, CaliforniaThu, Oct 14, 12:53 PM PDT · 18249 days ago · 4 km deep · 39 km away
44. 1.87 km NE of San Juan Bautista, CaliforniaThu, Oct 14, 5:36 PM PDT · 18249 days ago · 4 km deep · 12 km away
45. 2.421 km NE of Soledad, CaliforniaFri, Oct 15, 8:00 AM PDT · 18248 days ago · 3 km deep · 55 km away
46. 2.98 km NE of Gilroy, CaliforniaFri, Oct 15, 11:53 AM PDT · 18248 days ago · 5 km deep · 22 km away
47. 2.55 km ENE of Interlaken, CaliforniaFri, Oct 15, 9:17 PM PDT · 18248 days ago · 10 km deep · 10 km away
48. 2.115 km E of Seven Trees, CaliforniaSat, Oct 16, 9:12 AM PDT · 18247 days ago · 2 km deep · 44 km away
49. 2.911 km SE of Sunol, CaliforniaSun, Oct 17, 8:02 AM PDT · 18246 days ago · 5 km deep · 72 km away
50. 3.32 km SW of San Juan Bautista, CaliforniaSun, Oct 17, 7:46 PM PDT · 18246 days ago · 4 km deep · 8 km away
51. 2.830 km WSW of Three Rocks, CaliforniaSun, Oct 17, 8:49 PM PDT · 18246 days ago · 15 km deep · 98 km away
52. 1.616 km NE of East Foothills, CaliforniaMon, Oct 18, 7:49 AM PDT · 18245 days ago · 7 km deep · 66 km away
53. 1.820 km W of Westley, CaliforniaMon, Oct 18, 12:41 PM PDT · 18245 days ago · 0 km deep · 74 km away
54. 3.7Central CaliforniaMon, Oct 18, 5:36 PM PDT · 18245 days ago · 6 km deep · 9 km away
55. 1.73 km NW of Sunol, CaliforniaMon, Oct 18, 6:03 PM PDT · 18245 days ago · 3 km deep · 86 km away
56. 2.82 km SSW of San Juan Bautista, CaliforniaMon, Oct 18, 6:19 PM PDT · 18245 days ago · 6 km deep · 9 km away
57. 2.623 km ENE of Soledad, CaliforniaMon, Oct 18, 6:26 PM PDT · 18245 days ago · 4 km deep · 66 km away
58. 2.320 km NE of Soledad, CaliforniaMon, Oct 18, 8:08 PM PDT · 18245 days ago · 7 km deep · 56 km away
59. 1.8Central CaliforniaTue, Oct 19, 2:34 AM PDT · 18245 days ago · 4 km deep · 63 km away
60. 1.63 km SSE of Portola Valley, CaliforniaTue, Oct 19, 4:00 AM PDT · 18245 days ago · 10 km deep · 74 km away

The first 60 of 178.

Before

1. 2.425 km NNE of King City, CaliforniaThu, Sep 30, 8:06 PM PDT · 18263 days ago · 1 km deep · 79 km away
2. 1.713 km N of Morgan Hill, CaliforniaThu, Sep 30, 7:41 PM PDT · 18263 days ago · 7 km deep · 40 km away
3. 2.119 km ENE of East Foothills, CaliforniaThu, Sep 30, 6:03 PM PDT · 18263 days ago · 8 km deep · 61 km away
4. 2.216 km SSE of Tres Pinos, CaliforniaThu, Sep 30, 12:43 PM PDT · 18263 days ago · 6 km deep · 41 km away
5. 2.622 km ENE of Soledad, CaliforniaThu, Sep 30, 12:18 PM PDT · 18263 days ago · 3 km deep · 60 km away
6. 2.025 km NE of Soledad, CaliforniaWed, Sep 29, 8:54 PM PDT · 18264 days ago · 7 km deep · 58 km away
7. 2.824 km ENE of Soledad, CaliforniaWed, Sep 29, 6:24 PM PDT · 18264 days ago · 4 km deep · 66 km away
8. 2.32 km NE of Interlaken, CaliforniaWed, Sep 29, 12:32 AM PDT · 18265 days ago · 12 km deep · 11 km away
9. 2.521 km NE of Soledad, CaliforniaTue, Sep 28, 5:00 PM PDT · 18265 days ago · 3 km deep · 54 km away
10. 2.418 km SSE of Tres Pinos, CaliforniaTue, Sep 28, 4:14 PM PDT · 18265 days ago · 3 km deep · 43 km away
11. 1.811 km S of Tres Pinos, CaliforniaTue, Sep 28, 7:56 AM PDT · 18265 days ago · 8 km deep · 34 km away
12. 1.710 km SE of Livermore, CaliforniaMon, Sep 27, 7:48 PM PDT · 18266 days ago · 8 km deep · 81 km away
13. 2.35 km ENE of Interlaken, CaliforniaMon, Sep 27, 6:32 PM PDT · 18266 days ago · 11 km deep · 10 km away
14. 2.324 km ENE of Soledad, CaliforniaMon, Sep 27, 1:02 PM PDT · 18266 days ago · 3 km deep · 66 km away
15. 2.25 km SW of Gonzales, CaliforniaMon, Sep 27, 10:29 AM PDT · 18266 days ago · 11 km deep · 49 km away
16. 2.423 km ENE of Soledad, CaliforniaMon, Sep 27, 6:23 AM PDT · 18267 days ago · 5 km deep · 64 km away
17. 1.810 km NNW of Hollister, CaliforniaMon, Sep 27, 1:00 AM PDT · 18267 days ago · 4 km deep · 17 km away
18. 1.99 km NNW of Hollister, CaliforniaSun, Sep 26, 11:10 PM PDT · 18267 days ago · 4 km deep · 15 km away
19. 1.87 km WSW of Gilroy, CaliforniaSun, Sep 26, 8:53 PM PDT · 18267 days ago · 6 km deep · 10 km away
20. 2.77 km ENE of Hollister, CaliforniaSun, Sep 26, 11:38 AM PDT · 18267 days ago · 5 km deep · 25 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc1031747. Read Fri, Oct 2, 2026, 2:04 AM UTC.