M1.8 earthquake 9 km ENE of Milpitas, California

Magnitude

1.8 (Md, duration), micro

Magnitude from

Northern California Seismic System

Local time

Tue, Sep 6, 1977, 1:33 PM PDT

UTC

1977-09-06 20:33:41 UTC

Depth

7.2 km (4.5 mi), shallow

Epicenter

37.470° N, 121.818° 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

±0.12

Depth from

From location

Station coverage gap

82°

Stations used

20

• Milpitas, CaliforniaPopulation 77,604. Forecast9 kmENE
• San Jose, CaliforniaPopulation 997,368. Forecast16 kmNNE
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast498 kmNW

After

1. 2.48 km E of American Canyon, CaliforniaWed, Sep 7, 1:56 AM PDT · 17924 days ago · 4 km deep · 83 km away
2. 1.63 km W of San Juan Bautista, CaliforniaWed, Sep 7, 4:21 PM PDT · 17924 days ago · 6 km deep · 73 km away
3. 2.73 km W of San Juan Bautista, CaliforniaWed, Sep 7, 4:54 PM PDT · 17924 days ago · 6 km deep · 72 km away
4. 1.79 km NW of Hollister, CaliforniaWed, Sep 7, 7:27 PM PDT · 17924 days ago · 0 km deep · 68 km away
5. 1.84 km E of Fremont, CaliforniaThu, Sep 8, 1:53 AM PDT · 17923 days ago · 4 km deep · 14 km away
6. 1.79 km NW of Hollister, CaliforniaThu, Sep 8, 4:19 AM PDT · 17923 days ago · 5 km deep · 69 km away
7. 1.59 km NW of Hollister, CaliforniaThu, Sep 8, 7:15 AM PDT · 17923 days ago · 0 km deep · 68 km away
8. 1.910 km NW of Hollister, CaliforniaThu, Sep 8, 1:37 PM PDT · 17923 days ago · 2 km deep · 68 km away
9. 2.79 km NW of Hollister, CaliforniaThu, Sep 8, 11:10 PM PDT · 17922 days ago · 3 km deep · 68 km away
10. 3.09 km NW of Hollister, CaliforniaFri, Sep 9, 4:18 AM PDT · 17922 days ago · 3 km deep · 68 km away
11. 2.39 km NW of Hollister, CaliforniaFri, Sep 9, 6:31 AM PDT · 17922 days ago · 3 km deep · 68 km away
12. 2.23 km ENE of Waldon, CaliforniaFri, Sep 9, 10:30 AM PDT · 17922 days ago · 9 km deep · 54 km away
13. 1.810 km NW of Hollister, CaliforniaFri, Sep 9, 1:35 PM PDT · 17922 days ago · 3 km deep · 68 km away
14. 3.18 km SSW of San Juan Bautista, CaliforniaFri, Sep 9, 4:59 PM PDT · 17922 days ago · 9 km deep · 80 km away
15. 1.610 km NW of Hollister, CaliforniaSun, Sep 11, 12:10 AM PDT · 17920 days ago · 2 km deep · 68 km away
16. 1.76 km NNE of Interlaken, CaliforniaSun, Sep 11, 12:19 AM PDT · 17920 days ago · 10 km deep · 52 km away
17. 2.86 km NNE of Interlaken, CaliforniaSun, Sep 11, 12:30 AM PDT · 17920 days ago · 11 km deep · 52 km away
18. 2.05 km SW of Gilroy, CaliforniaSun, Sep 11, 8:36 AM PDT · 17920 days ago · 3 km deep · 58 km away
19. 3.38 km E of American Canyon, CaliforniaSun, Sep 11, 2:03 PM PDT · 17920 days ago · 4 km deep · 83 km away
20. 2.39 km S of Green Valley, CaliforniaSun, Sep 11, 6:17 PM PDT · 17920 days ago · 2 km deep · 83 km away
21. 1.87 km ENE of Seven Trees, CaliforniaMon, Sep 12, 9:27 AM PDT · 17919 days ago · 6 km deep · 18 km away
22. 1.74 km WNW of San Juan Bautista, CaliforniaTue, Sep 13, 1:49 PM PDT · 17918 days ago · 6 km deep · 71 km away
23. 1.610 km NW of Hollister, CaliforniaTue, Sep 13, 11:15 PM PDT · 17917 days ago · 0 km deep · 68 km away
24. 1.69 km NW of Hollister, CaliforniaWed, Sep 14, 4:46 AM PDT · 17917 days ago · 0 km deep · 69 km away
25. 2.39 km NNW of Hollister, CaliforniaWed, Sep 14, 5:30 PM PDT · 17917 days ago · 3 km deep · 68 km away
26. 2.110 km ESE of Gilroy, CaliforniaThu, Sep 15, 2:17 AM PDT · 17916 days ago · 2 km deep · 64 km away
27. 1.59 km NW of Hollister, CaliforniaThu, Sep 15, 8:27 AM PDT · 17916 days ago · 0 km deep · 68 km away
28. 1.79 km E of San Martin, CaliforniaThu, Sep 15, 9:41 PM PDT · 17915 days ago · 9 km deep · 51 km away
29. 1.75 km WNW of San Juan Bautista, CaliforniaFri, Sep 16, 3:14 AM PDT · 17915 days ago · 6 km deep · 70 km away
30. 2.28 km NW of Hollister, CaliforniaFri, Sep 16, 5:22 AM PDT · 17915 days ago · 7 km deep · 70 km away
31. 1.68 km NW of Hollister, CaliforniaFri, Sep 16, 10:12 AM PDT · 17915 days ago · 6 km deep · 70 km away
32. 1.79 km NW of Hollister, CaliforniaFri, Sep 16, 6:47 PM PDT · 17915 days ago · 2 km deep · 68 km away
33. 1.69 km NW of Hollister, CaliforniaSat, Sep 17, 8:26 AM PDT · 17914 days ago · 2 km deep · 69 km away
34. 2.013 km SSE of Livermore, CaliforniaSun, Sep 18, 11:32 AM PDT · 17913 days ago · 5 km deep · 16 km away
35. 1.810 km NW of Hollister, CaliforniaMon, Sep 19, 4:49 PM PDT · 17912 days ago · 0 km deep · 68 km away
36. 1.79 km NW of Hollister, CaliforniaTue, Sep 20, 7:18 AM PDT · 17911 days ago · 2 km deep · 68 km away
37. 1.79 km NW of Hollister, CaliforniaTue, Sep 20, 11:29 AM PDT · 17911 days ago · 2 km deep · 68 km away
38. 2.83 km WSW of San Juan Bautista, CaliforniaTue, Sep 20, 4:17 PM PDT · 17911 days ago · 8 km deep · 74 km away
39. 1.65 km SW of Gilroy, CaliforniaWed, Sep 21, 7:23 AM PDT · 17910 days ago · 3 km deep · 58 km away
40. 1.69 km NW of Hollister, CaliforniaWed, Sep 21, 7:48 AM PDT · 17910 days ago · 0 km deep · 68 km away
41. 2.89 km NW of Hollister, CaliforniaWed, Sep 21, 7:49 AM PDT · 17910 days ago · 3 km deep · 68 km away
42. 2.1Northern CaliforniaThu, Sep 22, 3:01 AM PDT · 17909 days ago · 7 km deep · 34 km away
43. 1.6Central CaliforniaFri, Sep 23, 3:53 PM PDT · 17908 days ago · 3 km deep · 69 km away
44. 1.98 km SSW of Ridgemark, CaliforniaFri, Sep 23, 11:40 PM PDT · 17907 days ago · 7 km deep · 88 km away
45. 2.23 km W of San Juan Bautista, CaliforniaSat, Sep 24, 6:43 AM PDT · 17907 days ago · 5 km deep · 72 km away
46. 1.69 km NW of Hollister, CaliforniaSat, Sep 24, 7:27 AM PDT · 17907 days ago · 3 km deep · 69 km away
47. 2.51 km E of Aromas, CaliforniaSun, Sep 25, 2:26 AM PDT · 17906 days ago · 7 km deep · 67 km away
48. 1.715 km E of Tres Pinos, CaliforniaSun, Sep 25, 2:33 AM PDT · 17906 days ago · 4 km deep · 96 km away
49. 2.9Northern CaliforniaSun, Sep 25, 10:28 AM PDT · 17906 days ago · 7 km deep · 15 km away
50. 1.58 km ESE of East Foothills, CaliforniaSun, Sep 25, 8:29 PM PDT · 17906 days ago · 7 km deep · 15 km away
51. 1.713 km S of Tres Pinos, CaliforniaMon, Sep 26, 4:57 AM PDT · 17905 days ago · 3 km deep · 100 km away
52. 1.514 km E of Seven Trees, CaliforniaMon, Sep 26, 11:55 PM PDT · 17904 days ago · 1 km deep · 23 km away
53. 2.02 km NNW of Pittsburg, CaliforniaWed, Sep 28, 1:44 AM PDT · 17903 days ago · 18 km deep · 65 km away
54. 1.55 km NNW of Hollister, CaliforniaWed, Sep 28, 1:54 PM PDT · 17903 days ago · 4 km deep · 72 km away
55. 2.32 km WSW of San Juan Bautista, CaliforniaWed, Sep 28, 9:18 PM PDT · 17903 days ago · 7 km deep · 74 km away
56. 2.09 km NW of Hollister, CaliforniaThu, Sep 29, 12:50 AM PDT · 17902 days ago · 4 km deep · 69 km away
57. 1.99 km NW of Hollister, CaliforniaThu, Sep 29, 12:58 AM PDT · 17902 days ago · 3 km deep · 69 km away
58. 1.813 km N of Hollister, CaliforniaThu, Sep 29, 6:10 AM PDT · 17902 days ago · 6 km deep · 67 km away
59. 1.914 km ENE of East Foothills, CaliforniaThu, Sep 29, 3:17 PM PDT · 17902 days ago · 7 km deep · 15 km away
60. 1.66 km SSE of San Juan Bautista, CaliforniaSun, Oct 2, 8:48 PM PDT · 17899 days ago · 11 km deep · 80 km away

The first 60 of 114.

Before

1. 1.521 km SE of Livermore, CaliforniaTue, Sep 6, 5:30 AM PDT · 17925 days ago · 10 km deep · 23 km away
2. 2.65 km ENE of East Foothills, CaliforniaTue, Sep 6, 2:55 AM PDT · 17925 days ago · 3 km deep · 9 km away
3. 2.72 km S of Blackhawk, CaliforniaTue, Sep 6, 2:38 AM PDT · 17925 days ago · 7 km deep · 37 km away
4. 3.79 km E of American Canyon, CaliforniaMon, Sep 5, 10:45 AM PDT · 17926 days ago · 10 km deep · 83 km away
5. 1.8Northern CaliforniaSun, Sep 4, 6:15 PM PDT · 17927 days ago · 12 km deep · 33 km away
6. 2.05 km N of Dublin, CaliforniaSun, Sep 4, 10:40 AM PDT · 17927 days ago · 10 km deep · 32 km away
7. 1.818 km NE of Tres Pinos, CaliforniaSat, Sep 3, 11:22 AM PDT · 17928 days ago · 5 km deep · 82 km away
8. 3.19 km NW of Hollister, CaliforniaFri, Sep 2, 9:24 AM PDT · 17929 days ago · 4 km deep · 69 km away
9. 2.210 km N of Pittsburg, CaliforniaFri, Sep 2, 7:04 AM PDT · 17929 days ago · 19 km deep · 73 km away
10. 1.94 km NNE of Dublin, CaliforniaWed, Aug 31, 3:13 PM PDT · 17931 days ago · 8 km deep · 31 km away
11. 2.32 km ENE of Berkeley, CaliforniaWed, Aug 31, 5:56 AM PDT · 17931 days ago · 10 km deep · 59 km away
12. 1.76 km NNE of Pittsburg, CaliforniaTue, Aug 30, 2:58 PM PDT · 17932 days ago · 6 km deep · 69 km away
13. 3.03 km ESE of Aromas, CaliforniaMon, Aug 29, 8:53 PM PDT · 17933 days ago · 6 km deep · 69 km away
14. 3.04 km ESE of Aromas, CaliforniaMon, Aug 29, 3:52 PM PDT · 17933 days ago · 6 km deep · 70 km away
15. 2.34 km ESE of Aromas, CaliforniaMon, Aug 29, 2:42 PM PDT · 17933 days ago · 5 km deep · 70 km away
16. 1.82 km E of North Gate, CaliforniaMon, Aug 29, 6:41 AM PDT · 17933 days ago · 13 km deep · 50 km away
17. 1.710 km ENE of Blackhawk, CaliforniaMon, Aug 29, 3:31 AM PDT · 17933 days ago · 15 km deep · 45 km away
18. 2.78 km NW of Hollister, CaliforniaSun, Aug 28, 4:47 AM PDT · 17934 days ago · 8 km deep · 70 km away
19. 2.82 km E of North Gate, CaliforniaSat, Aug 27, 2:43 PM PDT · 17935 days ago · 15 km deep · 50 km away
20. 1.99 km NW of Hollister, CaliforniaThu, Aug 25, 3:29 PM PDT · 17937 days ago · 6 km deep · 68 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc1036664. Read Sun, Oct 4, 2026, 4:08 PM UTC.