M1.9 earthquake 5km SW of Pacheco, CA

Magnitude

1.9 (Md, duration), micro

Magnitude from

Northern California Seismic System

Local time

Wed, Oct 6, 2021, 7:33 AM PDT

UTC

2021-10-06 14:33:13 UTC

Depth

9.7 km (6.0 mi), shallow

Epicenter

37.957° N, 122.121° W

Region

California

Felt reports

1

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.3 km horizontally, 0.3 km in depth

Magnitude uncertainty

±0.14

Depth from

From location

Station coverage gap

56°

Stations used

45

• Pacheco, CaliforniaPopulation 3,685. Forecast5 kmSW
• Pleasant Hill, CaliforniaPopulation 34,810. Forecast5 kmW
• Concord, CaliforniaPopulation 128,667. Forecast8 kmWSW
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast557 kmNW

After

1. 2.16km SSW of Yountville, CAWed, Oct 6, 9:44 AM PDT · 1824 days ago · 8 km deep · 50 km away · felt by 4
2. 2.16km SSW of Moraga, CAThu, Oct 7, 1:21 AM PDT · 1823 days ago · 10 km deep · 20 km away · felt by 6
3. 2.14km WSW of Alamo, CAThu, Oct 7, 5:32 PM PDT · 1822 days ago · 15 km deep · 14 km away · felt by 3
4. 1.64km SSW of San Francisco Zoo, CAThu, Oct 7, 10:36 PM PDT · 1822 days ago · 7 km deep · 46 km away · felt by 1
5. 1.612km W of Saratoga, CAFri, Oct 8, 3:58 PM PDT · 1821 days ago · 8 km deep · 79 km away
6. 1.711km WSW of Saratoga, CASun, Oct 10, 12:47 AM PDT · 1820 days ago · 8 km deep · 80 km away
7. 1.611km WSW of Saratoga, CASun, Oct 10, 11:36 AM PDT · 1819 days ago · 8 km deep · 80 km away
8. 1.511km WSW of Saratoga, CASun, Oct 10, 12:35 PM PDT · 1819 days ago · 8 km deep · 80 km away
9. 1.63km W of Fruitdale, CAMon, Oct 11, 5:10 AM PDT · 1819 days ago · 5 km deep · 73 km away
10. 2.13km WNW of Crockett, CATue, Oct 12, 10:20 AM PDT · 1817 days ago · 8 km deep · 16 km away · felt by 4
11. 1.811km ESE of Hidden Valley Lake, CAWed, Oct 13, 10:10 PM PDT · 1816 days ago · 9 km deep · 96 km away
12. 2.010km NNE of Angwin, CAThu, Oct 14, 3:20 PM PDT · 1815 days ago · 7 km deep · 82 km away
13. 2.816km SSE of Livermore, CASat, Oct 16, 7:55 PM PDT · 1813 days ago · 3 km deep · 59 km away · felt by 70
14. 1.815km ESE of Hidden Valley Lake, CASun, Oct 17, 4:24 PM PDT · 1812 days ago · 4 km deep · 92 km away
15. 1.65km SW of Clayton, CAMon, Oct 18, 2:23 AM PDT · 1812 days ago · 10 km deep · 14 km away
16. 1.69km SE of Sunol, CAMon, Oct 18, 7:47 AM PDT · 1812 days ago · 9 km deep · 53 km away
17. 1.91km S of San Ramon, CATue, Oct 19, 12:00 AM PDT · 1811 days ago · 8 km deep · 25 km away · felt by 4
18. 1.610km NE of Milpitas, CATue, Oct 19, 10:35 PM PDT · 1810 days ago · 4 km deep · 57 km away
19. 2.14km ENE of El Sobrante, CAFri, Oct 22, 7:52 AM PDT · 1808 days ago · 9 km deep · 12 km away · felt by 3
20. 2.84km ENE of El Sobrante, CASat, Oct 23, 6:34 AM PDT · 1807 days ago · 10 km deep · 12 km away · felt by 328
21. 2.04km ENE of El Sobrante, CASat, Oct 23, 8:36 AM PDT · 1807 days ago · 9 km deep · 12 km away · felt by 2
22. 1.61km SW of Alamo, CASat, Oct 23, 2:48 PM PDT · 1806 days ago · 9 km deep · 14 km away
23. 1.64km ENE of Burlingame, CASun, Oct 24, 6:26 AM PDT · 1806 days ago · 8 km deep · 43 km away · felt by 2
24. 2.34km SE of Larkfield-Wikiup, CAMon, Oct 25, 4:47 AM PDT · 1805 days ago · 8 km deep · 79 km away · felt by 9
25. 1.922km NE of Morgan Hill, CAMon, Oct 25, 6:45 AM PDT · 1805 days ago · 9 km deep · 96 km away
26. 2.07km W of Kenwood, CAMon, Oct 25, 7:39 PM PDT · 1804 days ago · 5 km deep · 68 km away · felt by 3
27. 2.68km ENE of Alum Rock, CAMon, Oct 25, 11:55 PM PDT · 1804 days ago · 7 km deep · 72 km away · felt by 18
28. 2.09km SW of Brentwood, CASun, Oct 31, 4:08 PM PDT · 1798 days ago · 17 km deep · 30 km away
29. 1.52km SW of San Francisco Zoo, CASun, Oct 31, 7:32 PM PDT · 1798 days ago · 7 km deep · 44 km away · felt by 1
30. 1.61km SSE of San Ramon, CATue, Nov 2, 11:42 AM PDT · 1796 days ago · 8 km deep · 25 km away
31. 1.66km N of San Leandro, CATue, Nov 2, 12:44 PM PDT · 1796 days ago · 9 km deep · 20 km away
32. 1.618km NNE of Angwin, CAThu, Nov 4, 3:40 AM PDT · 1795 days ago · 9 km deep · 88 km away · felt by 1
33. 1.511km SW of Mountain House, CAThu, Nov 4, 10:33 AM PDT · 1794 days ago · 17 km deep · 53 km away
34. 2.61km W of Kensington, CAThu, Nov 4, 9:46 PM PDT · 1794 days ago · 5 km deep · 16 km away · felt by 1,893
35. 2.31km W of Kensington, CAFri, Nov 5, 2:32 AM PDT · 1794 days ago · 5 km deep · 16 km away · felt by 162
36. 2.05km E of Fremont, CAThu, Nov 11, 4:28 PM PST · 1787 days ago · 9 km deep · 49 km away · felt by 3
37. 1.67km E of Penngrove, CASat, Nov 13, 11:21 PM PST · 1785 days ago · 7 km deep · 55 km away · felt by 1
38. 1.714km E of Angwin, CAMon, Nov 15, 10:24 AM PST · 1783 days ago · 5 km deep · 69 km away
39. 1.710km NE of Napa, CAMon, Nov 15, 2:44 PM PST · 1783 days ago · 7 km deep · 46 km away
40. 3.91km NE of San Ramon, CAWed, Nov 17, 11:43 AM PST · 1781 days ago · 10 km deep · 23 km away · felt by 4,732
41. 3.22km NE of San Ramon, CAWed, Nov 17, 11:44 AM PST · 1781 days ago · 10 km deep · 23 km away
42. 2.51km NE of San Ramon, CAWed, Nov 17, 11:46 AM PST · 1781 days ago · 9 km deep · 23 km away · felt by 39
43. 2.11km NNE of San Ramon, CAWed, Nov 17, 11:50 AM PST · 1781 days ago · 10 km deep · 23 km away
44. 2.31km NE of San Ramon, CAWed, Nov 17, 11:53 AM PST · 1781 days ago · 9 km deep · 23 km away · felt by 3
45. 1.71km NE of San Ramon, CAWed, Nov 17, 11:57 AM PST · 1781 days ago · 9 km deep · 23 km away
46. 3.01km NE of San Ramon, CAWed, Nov 17, 11:58 AM PST · 1781 days ago · 9 km deep · 23 km away · felt by 259
47. 1.52km NE of San Ramon, CAWed, Nov 17, 12:01 PM PST · 1781 days ago · 9 km deep · 23 km away · felt by 1
48. 2.01km NE of San Ramon, CAWed, Nov 17, 12:06 PM PST · 1781 days ago · 9 km deep · 23 km away
49. 2.01km NE of San Ramon, CAWed, Nov 17, 12:16 PM PST · 1781 days ago · 9 km deep · 23 km away · felt by 19
50. 1.81km NE of San Ramon, CAWed, Nov 17, 12:17 PM PST · 1781 days ago · 10 km deep · 23 km away · felt by 5
51. 1.61km NE of San Ramon, CAWed, Nov 17, 12:23 PM PST · 1781 days ago · 9 km deep · 23 km away · felt by 4
52. 1.61km NE of San Ramon, CAWed, Nov 17, 12:27 PM PST · 1781 days ago · 9 km deep · 23 km away · felt by 8
53. 1.51km NE of San Ramon, CAWed, Nov 17, 12:34 PM PST · 1781 days ago · 9 km deep · 23 km away · felt by 1
54. 2.01km NE of San Ramon, CAWed, Nov 17, 1:35 PM PST · 1781 days ago · 9 km deep · 23 km away
55. 1.62km NE of San Ramon, CAWed, Nov 17, 3:53 PM PST · 1781 days ago · 9 km deep · 23 km away · felt by 2
56. 2.72km NE of San Ramon, CAWed, Nov 17, 4:01 PM PST · 1781 days ago · 10 km deep · 23 km away · felt by 88
57. 1.81km NE of San Ramon, CAThu, Nov 18, 6:04 AM PST · 1781 days ago · 9 km deep · 23 km away · felt by 3
58. 1.71km NE of San Ramon, CAThu, Nov 18, 6:17 AM PST · 1781 days ago · 9 km deep · 23 km away
59. 1.91km NE of San Ramon, CAFri, Nov 19, 3:58 AM PST · 1780 days ago · 10 km deep · 23 km away
60. 1.83km S of Dillon Beach, CAFri, Nov 19, 1:21 PM PST · 1779 days ago · 10 km deep · 79 km away

The first 60 of 76.

Before

1. 1.82km SE of Pacheco, CATue, Oct 5, 5:53 PM PDT · 1824 days ago · 15 km deep · 6 km away
2. 1.61km S of Blackhawk, CATue, Oct 5, 9:56 AM PDT · 1825 days ago · 9 km deep · 25 km away
3. 2.70km N of Byron, CAMon, Oct 4, 9:36 AM PDT · 1826 days ago · 4 km deep · 43 km away · felt by 48
4. 1.85km SW of San Francisco Zoo, CASun, Oct 3, 1:51 PM PDT · 1826 days ago · 7 km deep · 47 km away
5. 2.019km NE of Alum Rock, CASun, Oct 3, 1:27 PM PDT · 1826 days ago · 6 km deep · 64 km away
6. 3.312km NNE of Morgan Hill, CASun, Oct 3, 5:02 AM PDT · 1827 days ago · 4 km deep · 92 km away · felt by 103
7. 1.53km N of San Leandro, CASat, Oct 2, 1:34 PM PDT · 1827 days ago · 6 km deep · 23 km away · felt by 14
8. 3.43km N of San Leandro, CASat, Oct 2, 12:22 PM PDT · 1827 days ago · 6 km deep · 23 km away · felt by 1,793
9. 1.78km NNE of Alum Rock, CASat, Oct 2, 7:53 AM PDT · 1828 days ago · 4 km deep · 65 km away · felt by 1
10. 1.59km NE of Santa Rosa, CASat, Oct 2, 6:08 AM PDT · 1828 days ago · 4 km deep · 75 km away
11. 3.03km N of San Leandro, CAFri, Oct 1, 7:15 PM PDT · 1828 days ago · 7 km deep · 23 km away · felt by 860
12. 1.611km NE of Napa, CAFri, Oct 1, 12:27 PM PDT · 1828 days ago · 9 km deep · 46 km away
13. 3.23km ESE of Santa Rosa, CAThu, Sep 30, 5:45 AM PDT · 1830 days ago · 9 km deep · 72 km away · felt by 1,048
14. 1.510km E of Alum Rock, CAThu, Sep 30, 12:08 AM PDT · 1830 days ago · 8 km deep · 76 km away
15. 1.76km SW of Calistoga, CATue, Sep 28, 6:00 PM PDT · 1831 days ago · 8 km deep · 78 km away
16. 1.514km SW of Portola Valley, CAMon, Sep 27, 6:48 PM PDT · 1832 days ago · 4 km deep · 75 km away
17. 2.12km E of Hayward, CASat, Sep 25, 9:39 AM PDT · 1835 days ago · 3 km deep · 35 km away · felt by 22
18. 2.71km SSE of Vallejo, CAFri, Sep 24, 12:04 AM PDT · 1836 days ago · 11 km deep · 19 km away · felt by 481
19. 1.81km WNW of Walnut Creek, CAThu, Sep 23, 6:44 PM PDT · 1836 days ago · 11 km deep · 6 km away · felt by 2
20. 1.85km WNW of Dublin, CAThu, Sep 23, 5:18 PM PDT · 1836 days ago · 7 km deep · 29 km away · felt by 1

From the USGS Earthquake Hazards Program and its partner networks, event nc73636185. Read Sun, Oct 4, 2026, 4:47 AM UTC.