M2.5 earthquake 1 km E of Aromas, California

Magnitude

2.5 (Md, duration), micro

Magnitude from

Northern California Seismic System

Local time

Sun, Sep 25, 1977, 2:26 AM PDT

UTC

1977-09-25 09:26:44 UTC

Depth

6.9 km (4.3 mi), shallow

Epicenter

36.889° N, 121.621° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.3 km horizontally, 0.5 km in depth

Magnitude uncertainty

±0.09

Depth from

From location

Station coverage gap

50°

Stations used

32

• 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. 1.715 km E of Tres Pinos, CaliforniaSun, Sep 25, 2:33 AM PDT · 17906 days ago · 4 km deep · 43 km away
2. 2.9Northern CaliforniaSun, Sep 25, 10:28 AM PDT · 17905 days ago · 7 km deep · 53 km away
3. 1.58 km ESE of East Foothills, CaliforniaSun, Sep 25, 8:29 PM PDT · 17905 days ago · 7 km deep · 53 km away
4. 2.430 km NE of Soledad, CaliforniaMon, Sep 26, 1:01 AM PDT · 17905 days ago · 7 km deep · 61 km away
5. 1.713 km S of Tres Pinos, CaliforniaMon, Sep 26, 4:57 AM PDT · 17905 days ago · 3 km deep · 38 km away
6. 1.724 km NE of Greenfield, CaliforniaMon, Sep 26, 7:39 AM PDT · 17905 days ago · 5 km deep · 71 km away
7. 1.514 km E of Seven Trees, CaliforniaMon, Sep 26, 11:55 PM PDT · 17904 days ago · 1 km deep · 45 km away
8. 1.55 km NNW of Hollister, CaliforniaWed, Sep 28, 1:54 PM PDT · 17902 days ago · 4 km deep · 17 km away
9. 2.32 km WSW of San Juan Bautista, CaliforniaWed, Sep 28, 9:18 PM PDT · 17902 days ago · 7 km deep · 7 km away
10. 2.09 km NW of Hollister, CaliforniaThu, Sep 29, 12:50 AM PDT · 17902 days ago · 4 km deep · 14 km away
11. 1.99 km NW of Hollister, CaliforniaThu, Sep 29, 12:58 AM PDT · 17902 days ago · 3 km deep · 13 km away
12. 1.813 km N of Hollister, CaliforniaThu, Sep 29, 6:10 AM PDT · 17902 days ago · 6 km deep · 23 km away
13. 1.630 km ENE of Soledad, CaliforniaThu, Sep 29, 10:54 AM PDT · 17901 days ago · 7 km deep · 62 km away
14. 2.630 km ENE of Soledad, CaliforniaThu, Sep 29, 11:12 AM PDT · 17901 days ago · 7 km deep · 63 km away
15. 2.330 km ENE of Soledad, CaliforniaThu, Sep 29, 11:36 AM PDT · 17901 days ago · 7 km deep · 63 km away
16. 1.914 km ENE of East Foothills, CaliforniaThu, Sep 29, 3:17 PM PDT · 17901 days ago · 7 km deep · 59 km away
17. 2.530 km ENE of Soledad, CaliforniaFri, Sep 30, 10:55 AM PDT · 17900 days ago · 7 km deep · 62 km away
18. 1.66 km SSE of San Juan Bautista, CaliforniaSun, Oct 2, 8:48 PM PDT · 17898 days ago · 11 km deep · 15 km away
19. 1.86 km WNW of Saratoga, CaliforniaMon, Oct 3, 9:20 AM PDT · 17897 days ago · 10 km deep · 60 km away
20. 1.724 km NE of Greenfield, CaliforniaMon, Oct 3, 6:49 PM PDT · 17897 days ago · 6 km deep · 71 km away
21. 1.79 km SE of San Juan Bautista, CaliforniaTue, Oct 4, 3:51 AM PDT · 17897 days ago · 5 km deep · 18 km away
22. 2.7Northern CaliforniaTue, Oct 4, 4:26 AM PDT · 17897 days ago · 2 km deep · 33 km away
23. 2.521 km NNE of Soledad, CaliforniaWed, Oct 5, 7:13 PM PDT · 17895 days ago · 8 km deep · 50 km away
24. 2.227 km ENE of Soledad, CaliforniaThu, Oct 6, 4:09 AM PDT · 17895 days ago · 8 km deep · 61 km away
25. 1.65 km SW of Gilroy, CaliforniaThu, Oct 6, 1:37 PM PDT · 17894 days ago · 4 km deep · 9 km away
26. 2.04 km WNW of San Juan Bautista, CaliforniaFri, Oct 7, 3:18 PM PDT · 17893 days ago · 6 km deep · 4 km away
27. 1.83 km SW of Ridgemark, CaliforniaSat, Oct 8, 4:13 AM PDT · 17893 days ago · 5 km deep · 22 km away
28. 2.07 km WSW of Gilroy, CaliforniaSat, Oct 8, 9:19 AM PDT · 17892 days ago · 5 km deep · 11 km away
29. 2.024 km ENE of Soledad, CaliforniaSat, Oct 8, 11:05 AM PDT · 17892 days ago · 2 km deep · 66 km away
30. 2.58 km ESE of East Foothills, CaliforniaSat, Oct 8, 8:26 PM PDT · 17892 days ago · 8 km deep · 53 km away
31. 2.111 km NNE of Morgan Hill, CaliforniaSun, Oct 9, 9:01 PM PDT · 17891 days ago · 5 km deep · 38 km away
32. 2.318 km WSW of South Dos Palos, CaliforniaMon, Oct 10, 3:11 AM PDT · 17891 days ago · 3 km deep · 70 km away
33. 3.02 km WSW of San Juan Bautista, CaliforniaMon, Oct 10, 5:35 PM PDT · 17890 days ago · 7 km deep · 7 km away
34. 2.24 km E of East Foothills, CaliforniaTue, Oct 11, 4:05 AM PDT · 17890 days ago · 1 km deep · 57 km away
35. 2.05 km ESE of East Foothills, CaliforniaWed, Oct 12, 5:35 AM PDT · 17889 days ago · 0 km deep · 55 km away
36. 1.61 km SSW of Portola Valley, CaliforniaWed, Oct 12, 8:23 AM PDT · 17889 days ago · 7 km deep · 77 km away
37. 1.89 km ESE of Lexington Hills, CaliforniaWed, Oct 12, 12:56 PM PDT · 17888 days ago · 11 km deep · 35 km away
38. 2.78 km ENE of Patterson, CaliforniaWed, Oct 12, 11:04 PM PDT · 17888 days ago · 17 km deep · 85 km away
39. 2.524 km NE of Greenfield, CaliforniaThu, Oct 13, 2:35 AM PDT · 17888 days ago · 0 km deep · 73 km away
40. 1.720 km NNE of Morgan Hill, CaliforniaThu, Oct 13, 6:03 AM PDT · 17888 days ago · 4 km deep · 45 km away
41. 3.77 km ENE of Patterson, CaliforniaThu, Oct 13, 9:10 AM PDT · 17887 days ago · 15 km deep · 85 km away
42. 2.28 km W of Gilroy, CaliforniaThu, Oct 13, 5:40 PM PDT · 17887 days ago · 3 km deep · 12 km away
43. 1.710 km ENE of Patterson, CaliforniaFri, Oct 14, 1:38 AM PDT · 17887 days ago · 13 km deep · 87 km away
44. 1.59 km NW of Hollister, CaliforniaFri, Oct 14, 11:16 AM PDT · 17886 days ago · 0 km deep · 14 km away
45. 1.68 km NE of San Juan Bautista, CaliforniaFri, Oct 14, 9:02 PM PDT · 17886 days ago · 10 km deep · 13 km away
46. 1.76 km WSW of Gilroy, CaliforniaSat, Oct 15, 6:21 AM PDT · 17886 days ago · 4 km deep · 10 km away
47. 1.610 km NNW of Hollister, CaliforniaSat, Oct 15, 7:53 AM PDT · 17886 days ago · 7 km deep · 18 km away
48. 1.76 km WSW of Gilroy, CaliforniaSat, Oct 15, 8:33 AM PDT · 17886 days ago · 4 km deep · 11 km away
49. 2.421 km NE of Soledad, CaliforniaSat, Oct 15, 9:01 AM PDT · 17885 days ago · 2 km deep · 57 km away
50. 1.917 km E of East Foothills, CaliforniaSat, Oct 15, 9:20 AM PDT · 17885 days ago · 6 km deep · 51 km away
51. 2.56 km WSW of Gilroy, CaliforniaSat, Oct 15, 9:32 PM PDT · 17885 days ago · 5 km deep · 11 km away
52. 1.821 km NE of Soledad, CaliforniaSun, Oct 16, 9:23 AM PDT · 17884 days ago · 3 km deep · 55 km away
53. 2.730 km NE of Soledad, CaliforniaSun, Oct 16, 2:00 PM PDT · 17884 days ago · 7 km deep · 62 km away
54. 1.88 km NNE of San Juan Bautista, CaliforniaSun, Oct 16, 2:48 PM PDT · 17884 days ago · 5 km deep · 12 km away
55. 1.58 km NNE of San Juan Bautista, CaliforniaSun, Oct 16, 3:08 PM PDT · 17884 days ago · 3 km deep · 12 km away
56. 2.49 km NW of Hollister, CaliforniaSun, Oct 16, 4:24 PM PDT · 17884 days ago · 1 km deep · 14 km away
57. 1.59 km NW of Hollister, CaliforniaSun, Oct 16, 5:34 PM PDT · 17884 days ago · 0 km deep · 14 km away
58. 1.6Central CaliforniaSun, Oct 16, 8:17 PM PDT · 17884 days ago · 6 km deep · 50 km away
59. 1.822 km SSE of Tres Pinos, CaliforniaSun, Oct 16, 8:57 PM PDT · 17884 days ago · 2 km deep · 48 km away
60. 1.725 km NNE of King City, CaliforniaMon, Oct 17, 3:02 AM PDT · 17884 days ago · 6 km deep · 78 km away

The first 60 of 177.

Before

1. 2.033 km SW of South Dos Palos, CaliforniaSat, Sep 24, 10:56 PM PDT · 17906 days ago · 2 km deep · 66 km away
2. 2.821 km NE of Soledad, CaliforniaSat, Sep 24, 6:40 PM PDT · 17906 days ago · 5 km deep · 52 km away
3. 2.921 km NE of Soledad, CaliforniaSat, Sep 24, 6:34 PM PDT · 17906 days ago · 5 km deep · 51 km away
4. 2.324 km ENE of Greenfield, CaliforniaSat, Sep 24, 7:52 AM PDT · 17907 days ago · 3 km deep · 73 km away
5. 1.69 km NW of Hollister, CaliforniaSat, Sep 24, 7:27 AM PDT · 17907 days ago · 3 km deep · 13 km away
6. 2.23 km W of San Juan Bautista, CaliforniaSat, Sep 24, 6:43 AM PDT · 17907 days ago · 5 km deep · 5 km away
7. 2.527 km NE of Soledad, CaliforniaSat, Sep 24, 3:57 AM PDT · 17907 days ago · 7 km deep · 57 km away
8. 1.98 km SSW of Ridgemark, CaliforniaFri, Sep 23, 11:40 PM PDT · 17907 days ago · 7 km deep · 24 km away
9. 1.6Central CaliforniaFri, Sep 23, 3:53 PM PDT · 17907 days ago · 3 km deep · 13 km away
10. 1.521 km NE of Soledad, CaliforniaFri, Sep 23, 1:59 AM PDT · 17908 days ago · 8 km deep · 58 km away
11. 1.6Central CaliforniaThu, Sep 22, 8:53 AM PDT · 17908 days ago · 6 km deep · 98 km away
12. 2.821 km NE of Soledad, CaliforniaThu, Sep 22, 4:01 AM PDT · 17909 days ago · 5 km deep · 53 km away
13. 2.1Northern CaliforniaThu, Sep 22, 3:01 AM PDT · 17909 days ago · 7 km deep · 49 km away
14. 2.013 km S of Tres Pinos, CaliforniaWed, Sep 21, 7:45 PM PDT · 17909 days ago · 3 km deep · 38 km away
15. 2.89 km NW of Hollister, CaliforniaWed, Sep 21, 7:49 AM PDT · 17910 days ago · 3 km deep · 14 km away
16. 1.69 km NW of Hollister, CaliforniaWed, Sep 21, 7:48 AM PDT · 17910 days ago · 0 km deep · 14 km away
17. 1.65 km SW of Gilroy, CaliforniaWed, Sep 21, 7:23 AM PDT · 17910 days ago · 3 km deep · 9 km away
18. 1.620 km SSE of Tres Pinos, CaliforniaWed, Sep 21, 2:28 AM PDT · 17910 days ago · 5 km deep · 46 km away
19. 2.83 km WSW of San Juan Bautista, CaliforniaTue, Sep 20, 4:17 PM PDT · 17910 days ago · 8 km deep · 7 km away
20. 1.79 km NW of Hollister, CaliforniaTue, Sep 20, 11:29 AM PDT · 17910 days ago · 2 km deep · 14 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc1036997. Read Sun, Oct 4, 2026, 3:05 AM UTC.