M1.8 earthquake 2 km E of North Gate, California

Magnitude

1.8 (md), micro

Local time

Wed, Sep 25, 1985, 7:09 AM PDT

UTC

1985-09-25 14:09:51 UTC

Depth

11.6 km (7.2 mi), shallow

Epicenter

37.909° N, 121.970° 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

±0.16

Depth from

From location

Station coverage gap

68°

Stations used

27

• North Gate, CaliforniaPopulation 679. Forecast2 kmE
• Clayton, CaliforniaPopulation 11,867. Forecast5 kmSW
• Concord, CaliforniaPopulation 128,667. Forecast9 kmSE
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast544 kmNW

After

1. 2.52 km E of Moskowite Corner, CaliforniaWed, Sep 25, 3:51 PM PDT · 14980 days ago · 4 km deep · 62 km away
2. 1.810 km ENE of Blackhawk, CaliforniaWed, Sep 25, 4:49 PM PDT · 14980 days ago · 11 km deep · 18 km away
3. 1.63 km NE of Santa Rosa, CaliforniaThu, Sep 26, 5:49 PM PDT · 14979 days ago · 2 km deep · 88 km away
4. 1.64 km ESE of Moskowite Corner, CaliforniaFri, Sep 27, 5:43 PM PDT · 14978 days ago · 5 km deep · 59 km away
5. 1.62 km E of Rodeo, CaliforniaFri, Sep 27, 11:17 PM PDT · 14977 days ago · 4 km deep · 27 km away
6. 1.916 km E of Seven Trees, CaliforniaSat, Sep 28, 1:02 AM PDT · 14977 days ago · 6 km deep · 75 km away
7. 1.616 km E of Seven Trees, CaliforniaSat, Sep 28, 1:56 AM PDT · 14977 days ago · 5 km deep · 75 km away
8. 2.84 km NE of San Leandro, CaliforniaSun, Sep 29, 1:21 AM PDT · 14976 days ago · 11 km deep · 22 km away
9. 1.76 km NE of East Foothills, CaliforniaSun, Sep 29, 4:11 AM PDT · 14976 days ago · 9 km deep · 56 km away
10. 1.615 km N of Morgan Hill, CaliforniaMon, Sep 30, 4:52 AM PDT · 14975 days ago · 8 km deep · 77 km away
11. 2.813 km N of Morgan Hill, CaliforniaMon, Sep 30, 9:45 PM PDT · 14974 days ago · 4 km deep · 79 km away
12. 1.511 km SSW of Brentwood, CaliforniaWed, Oct 2, 3:17 AM PDT · 14973 days ago · 12 km deep · 19 km away
13. 1.64 km SE of Larkfield-Wikiup, CaliforniaWed, Oct 2, 6:13 PM PDT · 14973 days ago · 8 km deep · 91 km away
14. 1.68 km NE of San Martin, CaliforniaFri, Oct 4, 3:17 AM PDT · 14971 days ago · 6 km deep · 94 km away
15. 1.711 km NW of Moskowite Corner, CaliforniaSat, Oct 5, 1:27 AM PDT · 14970 days ago · 4 km deep · 72 km away
16. 1.716 km NE of East Foothills, CaliforniaSat, Oct 5, 3:24 AM PDT · 14970 days ago · 8 km deep · 53 km away
17. 1.86 km SSE of Moskowite Corner, CaliforniaSat, Oct 5, 3:45 PM PDT · 14970 days ago · 5 km deep · 57 km away
18. 2.312 km N of Morgan Hill, CaliforniaSun, Oct 6, 4:27 PM PDT · 14969 days ago · 3 km deep · 79 km away
19. 1.712 km WSW of Byron, CaliforniaMon, Oct 7, 8:09 AM PDT · 14968 days ago · 10 km deep · 22 km away
20. 3.013 km N of Morgan Hill, CaliforniaMon, Oct 7, 8:46 AM PDT · 14968 days ago · 5 km deep · 79 km away
21. 1.83 km N of Ashland, CaliforniaTue, Oct 8, 5:06 PM PDT · 14967 days ago · 4 km deep · 25 km away
22. 2.216 km NE of East Foothills, CaliforniaWed, Oct 9, 11:00 PM PDT · 14965 days ago · 8 km deep · 55 km away
23. 1.88 km ENE of Morgan Hill, CaliforniaThu, Oct 10, 10:55 AM PDT · 14965 days ago · 2 km deep · 91 km away
24. 2.67 km WSW of Glen Ellen, CaliforniaFri, Oct 11, 9:37 AM PDT · 14964 days ago · 8 km deep · 72 km away
25. 1.77 km NNE of San Martin, CaliforniaFri, Oct 11, 7:55 PM PDT · 14964 days ago · 4 km deep · 92 km away
26. 1.80 km WSW of Concord, CaliforniaSat, Oct 12, 12:26 PM PDT · 14963 days ago · 19 km deep · 10 km away
27. 1.516 km E of Seven Trees, CaliforniaMon, Oct 14, 9:50 AM PDT · 14961 days ago · 6 km deep · 75 km away
28. 1.73 km N of Piedmont, CaliforniaWed, Oct 16, 4:35 AM PDT · 14959 days ago · 12 km deep · 24 km away
29. 1.88 km ENE of Morgan Hill, CaliforniaThu, Oct 17, 3:03 PM PDT · 14958 days ago · 1 km deep · 91 km away
30. 1.814 km E of Seven Trees, CaliforniaSat, Oct 19, 10:35 AM PDT · 14956 days ago · 3 km deep · 73 km away
31. 1.93 km ESE of Berkeley, CaliforniaSat, Oct 19, 1:37 PM PDT · 14956 days ago · 7 km deep · 24 km away
32. 1.59 km NNE of San Martin, CaliforniaMon, Oct 21, 6:52 AM PDT · 14954 days ago · 5 km deep · 91 km away
33. 1.711 km S of Pescadero, CaliforniaWed, Oct 23, 4:30 AM PDT · 14952 days ago · 15 km deep · 92 km away
34. 2.65 km E of Rohnert Park, CaliforniaWed, Oct 23, 11:43 PM PDT · 14951 days ago · 7 km deep · 76 km away
35. 2.52 km W of Concord, CaliforniaFri, Oct 25, 11:20 AM PDT · 14950 days ago · 13 km deep · 11 km away
36. 2.114 km N of Morgan Hill, CaliforniaSun, Oct 27, 6:42 AM PST · 14948 days ago · 3 km deep · 77 km away
37. 1.64 km SSW of Lexington Hills, CaliforniaSun, Oct 27, 9:20 PM PST · 14947 days ago · 0 km deep · 87 km away
38. 1.68 km NNE of East Foothills, CaliforniaMon, Oct 28, 4:49 PM PST · 14947 days ago · 9 km deep · 53 km away
39. 1.612 km E of East Foothills, CaliforniaWed, Oct 30, 2:40 AM PST · 14945 days ago · 5 km deep · 65 km away
40. 2.115 km E of Seven Trees, CaliforniaThu, Oct 31, 3:53 PM PST · 14944 days ago · 5 km deep · 74 km away
41. 1.615 km E of Seven Trees, CaliforniaThu, Oct 31, 3:55 PM PST · 14944 days ago · 5 km deep · 74 km away
42. 2.012 km ESE of East Foothills, CaliforniaSun, Nov 3, 5:48 AM PST · 14941 days ago · 6 km deep · 69 km away
43. 2.413 km N of Morgan Hill, CaliforniaSun, Nov 3, 6:18 AM PST · 14941 days ago · 3 km deep · 79 km away
44. 1.914 km E of Seven Trees, CaliforniaMon, Nov 4, 11:58 AM PST · 14940 days ago · 5 km deep · 72 km away
45. 3.011 km ESE of East Foothills, CaliforniaTue, Nov 5, 2:39 PM PST · 14939 days ago · 8 km deep · 68 km away
46. 1.613 km N of Morgan Hill, CaliforniaTue, Nov 5, 6:56 PM PST · 14939 days ago · 3 km deep · 79 km away
47. 1.87 km SSE of Livermore, CaliforniaThu, Nov 7, 5:36 AM PST · 14937 days ago · 1 km deep · 38 km away
48. 1.57 km ENE of Penngrove, CaliforniaThu, Nov 7, 11:45 AM PST · 14937 days ago · 8 km deep · 72 km away
49. 2.23 km WSW of Green Valley, CaliforniaThu, Nov 7, 7:18 PM PST · 14937 days ago · 7 km deep · 42 km away
50. 1.91 km ENE of Green Valley, CaliforniaThu, Nov 7, 7:26 PM PST · 14937 days ago · 12 km deep · 42 km away
51. 1.915 km E of Seven Trees, CaliforniaSat, Nov 9, 3:12 PM PST · 14935 days ago · 6 km deep · 74 km away
52. 2.06 km WSW of Calistoga, CaliforniaSat, Nov 9, 4:21 PM PST · 14935 days ago · -1 km deep · 94 km away
53. 2.07 km WSW of Calistoga, CaliforniaSat, Nov 9, 4:25 PM PST · 14935 days ago · 0 km deep · 94 km away
54. 2.115 km ESE of Suisun, CaliforniaSun, Nov 10, 11:00 AM PST · 14934 days ago · 11 km deep · 32 km away
55. 1.712 km SSE of Livermore, CaliforniaSun, Nov 10, 7:02 PM PST · 14934 days ago · 7 km deep · 43 km away
56. 1.714 km E of Seven Trees, CaliforniaMon, Nov 11, 11:09 PM PST · 14932 days ago · 2 km deep · 73 km away
57. 2.18 km NE of Milpitas, CaliforniaTue, Nov 12, 1:16 AM PST · 14932 days ago · 7 km deep · 50 km away
58. 1.914 km E of Seven Trees, CaliforniaTue, Nov 12, 12:53 PM PST · 14932 days ago · 3 km deep · 73 km away
59. 1.914 km E of Angwin, CaliforniaWed, Nov 13, 9:32 PM PST · 14930 days ago · 1 km deep · 80 km away
60. 2.06 km NE of East Foothills, CaliforniaThu, Nov 14, 9:10 AM PST · 14930 days ago · 10 km deep · 56 km away

The first 60 of 76.

Before

1. 2.05 km S of Moskowite Corner, CaliforniaWed, Sep 25, 2:46 AM PDT · 14980 days ago · 8 km deep · 58 km away
2. 1.816 km NE of East Foothills, CaliforniaTue, Sep 24, 1:07 PM PDT · 14981 days ago · 8 km deep · 53 km away
3. 1.611 km SW of Brentwood, CaliforniaTue, Sep 24, 7:04 AM PDT · 14981 days ago · 15 km deep · 19 km away
4. 2.5Northern CaliforniaTue, Sep 24, 12:25 AM PDT · 14981 days ago · 8 km deep · 53 km away
5. 3.516 km NE of East Foothills, CaliforniaTue, Sep 24, 12:21 AM PDT · 14981 days ago · 9 km deep · 53 km away
6. 1.516 km NE of East Foothills, CaliforniaMon, Sep 23, 10:10 PM PDT · 14981 days ago · 8 km deep · 53 km away
7. 1.611 km SW of Brentwood, CaliforniaSat, Sep 21, 9:23 PM PDT · 14984 days ago · 11 km deep · 18 km away
8. 1.9Northern CaliforniaSat, Sep 21, 8:36 AM PDT · 14984 days ago · 3 km deep · 44 km away
9. 2.58 km NE of San Martin, CaliforniaFri, Sep 20, 5:30 PM PDT · 14985 days ago · 7 km deep · 95 km away
10. 1.69 km NNE of Morgan Hill, CaliforniaThu, Sep 19, 8:21 PM PDT · 14986 days ago · 4 km deep · 85 km away
11. 1.910 km NNW of Moskowite Corner, CaliforniaMon, Sep 16, 3:50 PM PDT · 14989 days ago · 9 km deep · 73 km away
12. 2.213 km N of Morgan Hill, CaliforniaThu, Sep 12, 10:05 PM PDT · 14992 days ago · 5 km deep · 79 km away
13. 1.9Northern CaliforniaThu, Sep 12, 6:13 PM PDT · 14993 days ago · 4 km deep · 51 km away
14. 1.7Northern CaliforniaThu, Sep 12, 1:46 PM PDT · 14993 days ago · 7 km deep · 45 km away
15. 1.93 km WSW of Glen Ellen, CaliforniaThu, Sep 12, 10:24 AM PDT · 14993 days ago · 8 km deep · 72 km away
16. 2.13 km W of Glen Ellen, CaliforniaThu, Sep 12, 10:23 AM PDT · 14993 days ago · 8 km deep · 72 km away
17. 1.82 km WSW of Taft Mosswood, CaliforniaWed, Sep 11, 1:07 PM PDT · 14994 days ago · 15 km deep · 58 km away
18. 2.67 km WNW of Broadmoor, CaliforniaTue, Sep 10, 3:07 PM PDT · 14995 days ago · 8 km deep · 56 km away
19. 1.626 km SSW of Tracy, CaliforniaTue, Sep 10, 4:09 AM PDT · 14995 days ago · 0 km deep · 58 km away
20. 1.89 km ESE of Seven Trees, CaliforniaSun, Sep 8, 6:14 PM PDT · 14997 days ago · 5 km deep · 77 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc55791. Read Wed, Sep 30, 2026, 4:00 PM UTC.