M1.5 earthquake 16km SSE of Livermore, CA

Magnitude

1.5 (Md, duration), micro

Magnitude from

Northern California Seismic System

Local time

Sat, Jul 31, 2021, 4:04 AM PDT

UTC

2021-07-31 11:04:01 UTC

Depth

3.4 km (2.1 mi), shallow

Epicenter

37.548° N, 121.696° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.1 km horizontally, 0.5 km in depth

Magnitude uncertainty

±0.15

Depth from

From location

Station coverage gap

57°

Stations used

48

• Livermore, CaliforniaPopulation 88,126. Forecast16 kmSSE
• Fremont, CaliforniaPopulation 232,206. Forecast26 kmE
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast498 kmNW

After

1. 1.94km SSW of Colma, CASat, Jul 31, 4:49 AM PDT · 1891 days ago · 6 km deep · 70 km away · felt by 2
2. 1.519km ENE of Tres Pinos, CASat, Jul 31, 1:57 PM PDT · 1890 days ago · 2 km deep · 90 km away
3. 2.04km NE of Blackhawk, CASat, Jul 31, 6:48 PM PDT · 1890 days ago · 8 km deep · 37 km away
4. 2.83km NW of Hollister, CASat, Jul 31, 8:52 PM PDT · 1890 days ago · 7 km deep · 80 km away · felt by 90
5. 2.54km NNE of Blackhawk, CASat, Jul 31, 10:38 PM PDT · 1890 days ago · 8 km deep · 37 km away · felt by 32
6. 2.24km NNE of Blackhawk, CASun, Aug 1, 3:27 AM PDT · 1890 days ago · 9 km deep · 38 km away · felt by 2
7. 1.52km NW of Hollister, CASun, Aug 1, 7:46 AM PDT · 1890 days ago · 7 km deep · 80 km away · felt by 1
8. 3.02km NW of Hollister, CASun, Aug 1, 7:50 AM PDT · 1890 days ago · 7 km deep · 80 km away · felt by 83
9. 2.915km E of Seven Trees, CAMon, Aug 2, 4:05 PM PDT · 1888 days ago · 6 km deep · 27 km away · felt by 50
10. 2.29km ENE of San Martin, CATue, Aug 3, 6:57 PM PDT · 1887 days ago · 6 km deep · 49 km away · felt by 1
11. 1.87km S of Muir Beach, CAWed, Aug 4, 1:03 PM PDT · 1886 days ago · 13 km deep · 83 km away
12. 1.54km E of Moraga, CAThu, Aug 5, 2:22 PM PDT · 1885 days ago · 3 km deep · 47 km away
13. 1.911km NE of Milpitas, CAFri, Aug 6, 1:17 AM PDT · 1885 days ago · 5 km deep · 13 km away · felt by 3
14. 1.52km ESE of Berkeley, CAFri, Aug 6, 11:01 AM PDT · 1884 days ago · 4 km deep · 60 km away
15. 2.29km NE of Gilroy, CAFri, Aug 6, 5:57 PM PDT · 1884 days ago · 3 km deep · 55 km away
16. 2.84km NNW of Hollister, CAFri, Aug 6, 7:23 PM PDT · 1884 days ago · 9 km deep · 78 km away · felt by 12
17. 1.74km NNW of Hollister, CAFri, Aug 6, 8:22 PM PDT · 1884 days ago · 9 km deep · 78 km away
18. 1.73km SSW of San Juan Bautista, CASun, Aug 8, 12:18 AM PDT · 1883 days ago · 6 km deep · 82 km away
19. 2.22km E of Saratoga, CASun, Aug 8, 3:24 AM PDT · 1883 days ago · 7 km deep · 42 km away · felt by 48
20. 2.45km SE of Portola Valley, CASun, Aug 8, 9:07 AM PDT · 1883 days ago · 10 km deep · 50 km away · felt by 12
21. 2.115km ENE of Alum Rock, CASun, Aug 8, 1:31 PM PDT · 1882 days ago · 5 km deep · 14 km away · felt by 3
22. 2.01km NNW of Pleasant Hill, CAMon, Aug 9, 11:29 PM PDT · 1881 days ago · 11 km deep · 56 km away · felt by 12
23. 2.18km ENE of Alum Rock, CAWed, Aug 11, 6:37 AM PDT · 1880 days ago · 7 km deep · 19 km away
24. 1.810km NE of Napa, CAWed, Aug 11, 7:03 AM PDT · 1880 days ago · 13 km deep · 99 km away
25. 1.615km E of Seven Trees, CAThu, Aug 12, 1:15 AM PDT · 1879 days ago · 7 km deep · 28 km away
26. 1.61km NE of Berkeley, CAThu, Aug 12, 5:32 AM PDT · 1879 days ago · 6 km deep · 62 km away
27. 1.55km SE of Aromas, CAThu, Aug 12, 5:52 PM PDT · 1878 days ago · 6 km deep · 76 km away
28. 1.55km E of Fremont, CAFri, Aug 13, 6:05 AM PDT · 1878 days ago · 7 km deep · 20 km away
29. 1.75km WNW of Dublin, CASat, Aug 14, 5:01 PM PDT · 1876 days ago · 6 km deep · 32 km away
30. 1.92km WNW of Tres Pinos, CASun, Aug 15, 9:26 PM PDT · 1875 days ago · 9 km deep · 89 km away
31. 1.81km ENE of Alamo, CAMon, Aug 16, 9:27 AM PDT · 1874 days ago · 13 km deep · 44 km away
32. 2.99km SW of Tres Pinos, CATue, Aug 17, 2:14 PM PDT · 1873 days ago · 3 km deep · 95 km away · felt by 8
33. 3.15km S of Ridgemark, CASat, Aug 21, 12:54 PM PDT · 1869 days ago · 9 km deep · 91 km away · felt by 17
34. 1.624km SSW of Los Banos, CAMon, Aug 23, 4:57 AM PDT · 1868 days ago · 2 km deep · 98 km away
35. 1.64km SW of Colma, CAMon, Aug 23, 5:34 AM PDT · 1868 days ago · 7 km deep · 71 km away
36. 1.824km SSW of Los Banos, CAMon, Aug 23, 2:17 PM PDT · 1867 days ago · 6 km deep · 98 km away
37. 1.82km NW of Pacifica, CAMon, Aug 23, 6:18 PM PDT · 1867 days ago · 8 km deep · 72 km away · felt by 2
38. 2.115km E of Seven Trees, CAMon, Aug 23, 6:37 PM PDT · 1867 days ago · 4 km deep · 28 km away · felt by 1
39. 1.815km E of Seven Trees, CAMon, Aug 23, 6:46 PM PDT · 1867 days ago · 3 km deep · 28 km away
40. 1.611km NE of Napa, CAWed, Aug 25, 2:17 AM PDT · 1866 days ago · 10 km deep · 99 km away
41. 1.83km SW of Alamo, CAThu, Aug 26, 9:13 PM PDT · 1864 days ago · 12 km deep · 45 km away
42. 1.78km SSW of Livermore, CASat, Aug 28, 9:50 PM PDT · 1862 days ago · 10 km deep · 11 km away
43. 1.815km E of Seven Trees, CAMon, Aug 30, 5:14 AM PDT · 1861 days ago · 3 km deep · 28 km away
44. 1.718km SSW of Gustine, CAMon, Aug 30, 6:22 AM PDT · 1861 days ago · 7 km deep · 74 km away
45. 1.73km ESE of Aromas, CAMon, Aug 30, 4:41 PM PDT · 1860 days ago · 7 km deep · 75 km away · felt by 2
46. 1.915km E of Seven Trees, CATue, Aug 31, 1:15 AM PDT · 1860 days ago · 4 km deep · 29 km away
47. 2.411km NE of Milpitas, CATue, Aug 31, 11:27 AM PDT · 1859 days ago · 4 km deep · 13 km away
48. 1.88km NNE of Black Point-Green Point, CATue, Aug 31, 2:32 PM PDT · 1859 days ago · 8 km deep · 98 km away
49. 2.66km S of Livermore, CAWed, Sep 1, 4:13 PM PDT · 1858 days ago · 4 km deep · 11 km away · felt by 81
50. 1.75km NW of Dublin, CAThu, Sep 2, 6:20 AM PDT · 1858 days ago · 7 km deep · 32 km away
51. 2.014km N of Morgan Hill, CAFri, Sep 3, 1:09 PM PDT · 1856 days ago · 4 km deep · 33 km away · felt by 2
52. 2.26km SW of Gilroy, CASat, Sep 4, 9:15 AM PDT · 1855 days ago · 3 km deep · 65 km away · felt by 1
53. 1.56km SW of Gilroy, CASat, Sep 4, 11:01 AM PDT · 1855 days ago · 3 km deep · 65 km away
54. 1.910km NE of Milpitas, CASat, Sep 4, 12:25 PM PDT · 1855 days ago · 4 km deep · 13 km away
55. 1.71km N of Bolinas, CASun, Sep 5, 10:04 AM PDT · 1854 days ago · 9 km deep · 96 km away
56. 1.611km ESE of Gilroy, CASun, Sep 5, 10:52 PM PDT · 1854 days ago · 5 km deep · 67 km away · felt by 3
57. 1.76km WNW of Dublin, CAThu, Sep 9, 6:56 PM PDT · 1850 days ago · 7 km deep · 33 km away · felt by 3
58. 1.78km S of Gustine, CAFri, Sep 10, 12:41 AM PDT · 1850 days ago · 9 km deep · 73 km away
59. 1.73km ESE of Pacheco, CAFri, Sep 10, 5:03 PM PDT · 1849 days ago · 12 km deep · 56 km away
60. 1.81km NW of Diablo, CASun, Sep 12, 5:31 AM PDT · 1848 days ago · 8 km deep · 41 km away

The first 60 of 88.

Before

1. 1.56km SW of Gilroy, CAFri, Jul 30, 11:29 AM PDT · 1891 days ago · 1 km deep · 65 km away
2. 2.08km ENE of Interlaken, CATue, Jul 27, 3:42 PM PDT · 1894 days ago · 5 km deep · 62 km away
3. 2.32km WNW of Concord, CATue, Jul 27, 12:46 PM PDT · 1894 days ago · 17 km deep · 56 km away · felt by 4
4. 1.72km E of Berkeley, CAMon, Jul 26, 12:44 AM PDT · 1896 days ago · 9 km deep · 61 km away
5. 1.85km E of Fremont, CASun, Jul 25, 5:16 PM PDT · 1896 days ago · 9 km deep · 20 km away
6. 2.18km S of Muir Beach, CASun, Jul 25, 9:11 AM PDT · 1897 days ago · 4 km deep · 82 km away · felt by 2
7. 1.68km S of Muir Beach, CASat, Jul 24, 5:41 PM PDT · 1897 days ago · 5 km deep · 82 km away
8. 1.73km NNW of Byron, CAWed, Jul 21, 7:11 AM PDT · 1901 days ago · 4 km deep · 39 km away
9. 2.98km S of San Juan Bautista, CATue, Jul 20, 6:29 PM PDT · 1901 days ago · 10 km deep · 87 km away · felt by 59
10. 1.63km NNW of Piedmont, CASat, Jul 17, 6:42 AM PDT · 1905 days ago · 8 km deep · 59 km away
11. 1.63km E of Aromas, CAFri, Jul 16, 9:14 AM PDT · 1906 days ago · 2 km deep · 74 km away
12. 1.613km N of Morgan Hill, CAThu, Jul 15, 10:00 PM PDT · 1906 days ago · 4 km deep · 34 km away
13. 1.69km SSW of Tres Pinos, CATue, Jul 13, 12:43 AM PDT · 1909 days ago · 2 km deep · 97 km away
14. 2.24km NNW of Hollister, CASun, Jul 11, 11:05 PM PDT · 1910 days ago · 9 km deep · 78 km away
15. 1.87km S of Tres Pinos, CASun, Jul 11, 11:10 AM PDT · 1910 days ago · 15 km deep · 97 km away
16. 2.74km NNW of Hollister, CASun, Jul 11, 10:37 AM PDT · 1910 days ago · 9 km deep · 78 km away · felt by 20
17. 1.88km SW of Loyola, CASun, Jul 11, 9:55 AM PDT · 1910 days ago · 6 km deep · 50 km away
18. 1.79km NNE of Alum Rock, CASun, Jul 11, 7:08 AM PDT · 1911 days ago · 9 km deep · 15 km away
19. 2.12km ENE of Berkeley, CASun, Jul 11, 3:42 AM PDT · 1911 days ago · 9 km deep · 61 km away · felt by 11
20. 1.812km SSW of Tres Pinos, CAWed, Jul 7, 2:32 AM PDT · 1915 days ago · 11 km deep · 100 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc73603106. Read Sun, Oct 4, 2026, 3:44 AM UTC.