M1.7 earthquake 5km E of Fremont, CA

Magnitude

1.7 (Md, duration), micro

Magnitude from

Northern California Seismic System

Local time

Sat, Nov 20, 2021, 8:43 AM PST

UTC

2021-11-20 16:43:15 UTC

Depth

9.0 km (5.6 mi), shallow

Epicenter

37.540° N, 121.922° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.1 km horizontally, 0.2 km in depth

Magnitude uncertainty

±0.27

Depth from

From location

Station coverage gap

37°

Stations used

48

• Fremont, CaliforniaPopulation 232,206. Forecast6 kmE
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast510 kmNW

After

1. 2.112km ENE of Morgan Hill, CASat, Nov 20, 5:24 PM PST · 1778 days ago · 4 km deep · 54 km away
2. 1.98km SSW of Brentwood, CASat, Nov 20, 7:27 PM PST · 1778 days ago · 19 km deep · 38 km away · felt by 1
3. 2.211km NW of Morgan Hill, CASat, Nov 20, 8:00 PM PST · 1778 days ago · 6 km deep · 40 km away · felt by 1
4. 1.97km ESE of Bethel Island, CASat, Nov 20, 8:33 PM PST · 1778 days ago · 9 km deep · 58 km away
5. 2.14km W of San Juan Bautista, CAMon, Nov 22, 5:57 PM PST · 1776 days ago · 6 km deep · 83 km away
6. 2.012km SW of Ridgemark, CAWed, Nov 24, 4:10 PM PST · 1774 days ago · 6 km deep · 98 km away
7. 1.68km SW of Ridgemark, CAFri, Nov 26, 4:04 PM PST · 1772 days ago · 10 km deep · 96 km away
8. 1.723km WNW of Bonny Doon, CASat, Nov 27, 4:17 PM PST · 1771 days ago · 7 km deep · 63 km away
9. 2.51km W of Kensington, CAMon, Nov 29, 7:30 PM PST · 1769 days ago · 5 km deep · 52 km away · felt by 965
10. 2.01km W of Kensington, CAMon, Nov 29, 7:37 PM PST · 1769 days ago · 5 km deep · 52 km away · felt by 43
11. 2.79km ENE of Morgan Hill, CATue, Nov 30, 8:07 AM PST · 1769 days ago · 2 km deep · 53 km away · felt by 38
12. 1.74km S of Portola Valley, CAThu, Dec 2, 6:32 PM PST · 1766 days ago · 6 km deep · 35 km away
13. 1.74km S of Portola Valley, CAThu, Dec 2, 7:22 PM PST · 1766 days ago · 6 km deep · 35 km away · felt by 1
14. 1.81km NE of San Ramon, CAFri, Dec 3, 11:25 PM PST · 1765 days ago · 9 km deep · 28 km away · felt by 1
15. 2.54km N of San Leandro, CASat, Dec 4, 6:08 PM PST · 1764 days ago · 3 km deep · 32 km away · felt by 150
16. 1.66km WSW of Colma, CAWed, Dec 8, 7:01 AM PST · 1761 days ago · 9 km deep · 55 km away · felt by 2
17. 2.22km E of Pacheco, CAWed, Dec 8, 9:21 AM PST · 1761 days ago · 16 km deep · 51 km away
18. 1.87km ENE of Gilroy, CAFri, Dec 10, 11:02 AM PST · 1759 days ago · 9 km deep · 69 km away
19. 1.63km SSW of Half Moon Bay, CASun, Dec 12, 2:24 AM PST · 1757 days ago · 10 km deep · 47 km away
20. 1.67km WSW of Lagunitas-Forest Knolls, CAMon, Dec 13, 6:35 AM PST · 1756 days ago · 5 km deep · 89 km away
21. 1.63km SE of Concord, CAMon, Dec 13, 10:51 AM PST · 1756 days ago · 12 km deep · 46 km away
22. 2.23km SSW of Half Moon Bay, CAMon, Dec 13, 1:48 PM PST · 1756 days ago · 10 km deep · 47 km away
23. 2.32km SW of Discovery Bay, CAMon, Dec 13, 4:01 PM PST · 1755 days ago · 18 km deep · 48 km away
24. 1.63km SSW of Half Moon Bay, CATue, Dec 14, 2:02 AM PST · 1755 days ago · 10 km deep · 47 km away
25. 1.89km NE of Morgan Hill, CATue, Dec 14, 6:31 PM PST · 1754 days ago · 2 km deep · 50 km away
26. 1.95km NNW of Hollister, CATue, Dec 14, 8:16 PM PST · 1754 days ago · 10 km deep · 85 km away
27. 1.63km SSE of San Juan Bautista, CAThu, Dec 16, 3:21 AM PST · 1753 days ago · 6 km deep · 88 km away
28. 2.010km E of Alum Rock, CASat, Dec 18, 11:21 AM PST · 1751 days ago · 9 km deep · 27 km away
29. 2.01km N of Pacifica, CASun, Dec 19, 10:02 PM PST · 1749 days ago · 8 km deep · 51 km away · felt by 14
30. 1.91km E of Hollister, CATue, Dec 21, 9:36 PM PST · 1747 days ago · 6 km deep · 90 km away · felt by 3
31. 1.71km WNW of Danville, CATue, Dec 21, 10:33 PM PST · 1747 days ago · 8 km deep · 32 km away · felt by 2
32. 1.91km NW of Danville, CAWed, Dec 22, 3:57 AM PST · 1747 days ago · 8 km deep · 33 km away · felt by 3
33. 1.62km NE of San Ramon, CAThu, Dec 23, 4:30 AM PST · 1746 days ago · 10 km deep · 29 km away · felt by 2
34. 1.85km NNE of Alum Rock, CAFri, Dec 24, 9:15 PM PST · 1744 days ago · 0 km deep · 17 km away · felt by 5
35. 2.126km SW of Gustine, CASun, Dec 26, 6:56 PM PST · 1742 days ago · 7 km deep · 84 km away
36. 2.34km NE of Fairview, CATue, Dec 28, 8:58 PM PST · 1740 days ago · 7 km deep · 20 km away · felt by 27
37. 2.05km ESE of Aromas, CAThu, Dec 30, 4:10 PM PST · 1738 days ago · 5 km deep · 81 km away
38. 1.52km S of Alamo, CAThu, Dec 30, 4:12 PM PST · 1738 days ago · 10 km deep · 34 km away · felt by 3
39. 2.19km E of Alum Rock, CASun, Jan 2, 5:42 AM PST · 1736 days ago · 9 km deep · 25 km away
40. 1.510km ENE of Milpitas, CAMon, Jan 3, 8:47 AM PST · 1735 days ago · 8 km deep · 12 km away
41. 2.62km SW of Colma, CATue, Jan 4, 3:18 AM PST · 1734 days ago · 8 km deep · 50 km away
42. 1.711km NE of Milpitas, CASat, Jan 8, 9:54 AM PST · 1730 days ago · 4 km deep · 10 km away
43. 1.727km NE of Hollister, CASat, Jan 8, 12:56 PM PST · 1730 days ago · 3 km deep · 84 km away
44. 1.52km NE of Union City, CASat, Jan 8, 6:39 PM PST · 1729 days ago · 5 km deep · 10 km away
45. 1.75km WSW of Pacheco, CAMon, Jan 10, 3:05 PM PST · 1727 days ago · 9 km deep · 50 km away
46. 1.54km WSW of Colma, CAWed, Jan 12, 4:29 PM PST · 1725 days ago · 9 km deep · 53 km away
47. 1.61km NE of San Ramon, CAWed, Jan 12, 9:16 PM PST · 1725 days ago · 10 km deep · 27 km away
48. 2.111km SSW of Brentwood, CAThu, Jan 13, 1:57 PM PST · 1725 days ago · 18 km deep · 35 km away
49. 2.46km N of Diablo, CAThu, Jan 13, 5:21 PM PST · 1724 days ago · 13 km deep · 39 km away · felt by 25
50. 1.99km E of Gilroy, CAThu, Jan 13, 7:30 PM PST · 1724 days ago · 5 km deep · 73 km away · felt by 2
51. 2.39km E of Gilroy, CAFri, Jan 14, 12:56 PM PST · 1724 days ago · 6 km deep · 72 km away
52. 1.62km NNE of San Ramon, CASat, Jan 15, 9:15 AM PST · 1723 days ago · 11 km deep · 29 km away · felt by 2
53. 1.98km E of Fremont, CASat, Jan 15, 2:24 PM PST · 1722 days ago · 7 km deep · 3 km away · felt by 3
54. 1.77km ENE of Gilroy, CASun, Jan 16, 7:19 PM PST · 1721 days ago · 9 km deep · 68 km away

Before

1. 1.78km WSW of Mountain House, CAFri, Nov 19, 4:41 PM PST · 1779 days ago · 0 km deep · 35 km away
2. 1.91km NE of San Ramon, CAFri, Nov 19, 3:58 AM PST · 1780 days ago · 10 km deep · 28 km away
3. 1.71km NE of San Ramon, CAThu, Nov 18, 6:17 AM PST · 1781 days ago · 9 km deep · 28 km away
4. 1.81km NE of San Ramon, CAThu, Nov 18, 6:04 AM PST · 1781 days ago · 9 km deep · 28 km away · felt by 3
5. 2.72km NE of San Ramon, CAWed, Nov 17, 4:01 PM PST · 1781 days ago · 10 km deep · 28 km away · felt by 88
6. 1.62km NE of San Ramon, CAWed, Nov 17, 3:53 PM PST · 1781 days ago · 9 km deep · 28 km away · felt by 2
7. 2.01km NE of San Ramon, CAWed, Nov 17, 1:35 PM PST · 1782 days ago · 9 km deep · 28 km away
8. 1.51km NE of San Ramon, CAWed, Nov 17, 12:34 PM PST · 1782 days ago · 9 km deep · 28 km away · felt by 1
9. 1.61km NE of San Ramon, CAWed, Nov 17, 12:27 PM PST · 1782 days ago · 9 km deep · 28 km away · felt by 8
10. 1.61km NE of San Ramon, CAWed, Nov 17, 12:23 PM PST · 1782 days ago · 9 km deep · 28 km away · felt by 4
11. 1.81km NE of San Ramon, CAWed, Nov 17, 12:17 PM PST · 1782 days ago · 10 km deep · 28 km away · felt by 5
12. 2.01km NE of San Ramon, CAWed, Nov 17, 12:16 PM PST · 1782 days ago · 9 km deep · 28 km away · felt by 19
13. 2.01km NE of San Ramon, CAWed, Nov 17, 12:06 PM PST · 1782 days ago · 9 km deep · 28 km away
14. 1.52km NE of San Ramon, CAWed, Nov 17, 12:01 PM PST · 1782 days ago · 9 km deep · 28 km away · felt by 1
15. 3.01km NE of San Ramon, CAWed, Nov 17, 11:58 AM PST · 1782 days ago · 9 km deep · 28 km away · felt by 259
16. 1.71km NE of San Ramon, CAWed, Nov 17, 11:57 AM PST · 1782 days ago · 9 km deep · 28 km away
17. 2.31km NE of San Ramon, CAWed, Nov 17, 11:53 AM PST · 1782 days ago · 9 km deep · 28 km away · felt by 3
18. 2.11km NNE of San Ramon, CAWed, Nov 17, 11:50 AM PST · 1782 days ago · 10 km deep · 28 km away
19. 2.51km NE of San Ramon, CAWed, Nov 17, 11:46 AM PST · 1782 days ago · 9 km deep · 28 km away · felt by 39
20. 3.22km NE of San Ramon, CAWed, Nov 17, 11:44 AM PST · 1782 days ago · 10 km deep · 28 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc73655570. Read Sun, Oct 4, 2026, 9:38 AM UTC.