California earthquakes

M1.5 earthquake 11km SW of Mountain House, CA

A magnitude 1.5 earthquake struck 11km SW of Mountain House, CA on Thu, Nov 4, 2021, 10:33 AM PDT (17:33 UTC), 17 km (10 mi) below the surface.

A larger quake followed: M3.9 1km NE of San Ramon, CA. This one was a foreshock.

Mountain House forecastMore in California

Map

Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude
1.5 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
2021-11-04 17:33:59 UTC
Depth
16.7 km (10.4 mi), shallow
Epicenter
37.702° N, 121.616° W
Tsunami flag
No
Status
Reviewed by a seismologist

Did you feel it?

No one has reported feeling this quake to the USGS.

How well it is located

Reviewed by a seismologist.

Location uncertainty
About 0.3 km horizontally, 0.6 km in depth
Magnitude uncertainty
±0.29
Depth from
From location
Station coverage gap
132°
Stations used
20

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Nearby

Within 100 km, magnitude 1.5 and up: 67 in the 60 days after this one and 32 in the 30 days before it.

After

  1. 2.17km NE of San Martin, CA · 1794 days ago · 5 km deep · 65 km away
  2. 2.61km W of Kensington, CA · 1794 days ago · 5 km deep · 64 km away · felt by 1,893
  3. 2.31km W of Kensington, CA · 1794 days ago · 5 km deep · 64 km away · felt by 162
  4. 1.810km ENE of Morgan Hill, CA · 1794 days ago · 3 km deep · 61 km away
  5. 2.46km N of Hollister, CA · 1792 days ago · 10 km deep · 91 km away · felt by 12
  6. 1.68km ENE of Gilroy, CA · 1792 days ago · 7 km deep · 75 km away · felt by 1
  7. 2.05km E of Fremont, CA · 1787 days ago · 9 km deep · 32 km away · felt by 3
  8. 1.710km NE of Napa, CA · 1783 days ago · 7 km deep · 89 km away
  9. 3.91km NE of San Ramon, CA · 1782 days ago · 10 km deep · 32 km away · felt by 4,732
  10. 3.22km NE of San Ramon, CA · 1782 days ago · 10 km deep · 32 km away
  11. 2.51km NE of San Ramon, CA · 1782 days ago · 9 km deep · 33 km away · felt by 39
  12. 2.11km NNE of San Ramon, CA · 1782 days ago · 10 km deep · 33 km away
  13. 2.31km NE of San Ramon, CA · 1782 days ago · 9 km deep · 32 km away · felt by 3
  14. 1.71km NE of San Ramon, CA · 1782 days ago · 9 km deep · 33 km away
  15. 3.01km NE of San Ramon, CA · 1782 days ago · 9 km deep · 32 km away · felt by 259
  16. 1.52km NE of San Ramon, CA · 1782 days ago · 9 km deep · 32 km away · felt by 1
  17. 2.01km NE of San Ramon, CA · 1782 days ago · 9 km deep · 32 km away
  18. 2.01km NE of San Ramon, CA · 1782 days ago · 9 km deep · 32 km away · felt by 19
  19. 1.81km NE of San Ramon, CA · 1782 days ago · 10 km deep · 32 km away · felt by 5
  20. 1.61km NE of San Ramon, CA · 1782 days ago · 9 km deep · 32 km away · felt by 4
  21. 1.61km NE of San Ramon, CA · 1782 days ago · 9 km deep · 32 km away · felt by 8
  22. 1.51km NE of San Ramon, CA · 1782 days ago · 9 km deep · 32 km away · felt by 1
  23. 2.01km NE of San Ramon, CA · 1781 days ago · 9 km deep · 32 km away
  24. 1.62km NE of San Ramon, CA · 1781 days ago · 9 km deep · 32 km away · felt by 2
  25. 2.72km NE of San Ramon, CA · 1781 days ago · 10 km deep · 32 km away · felt by 88
  26. 1.81km NE of San Ramon, CA · 1781 days ago · 9 km deep · 32 km away · felt by 3
  27. 1.71km NE of San Ramon, CA · 1781 days ago · 9 km deep · 33 km away
  28. 1.91km NE of San Ramon, CA · 1780 days ago · 10 km deep · 33 km away
  29. 1.78km WSW of Mountain House, CA · 1779 days ago · 0 km deep · 6 km away
  30. 1.75km E of Fremont, CA · 1779 days ago · 9 km deep · 32 km away
  31. 2.112km ENE of Morgan Hill, CA · 1778 days ago · 4 km deep · 59 km away
  32. 1.98km SSW of Brentwood, CA · 1778 days ago · 19 km deep · 22 km away · felt by 1
  33. 2.211km NW of Morgan Hill, CA · 1778 days ago · 6 km deep · 55 km away · felt by 1
  34. 1.97km ESE of Bethel Island, CA · 1778 days ago · 9 km deep · 32 km away
  35. 2.14km W of San Juan Bautista, CA · 1776 days ago · 6 km deep · 95 km away
  36. 1.723km WNW of Bonny Doon, CA · 1771 days ago · 7 km deep · 94 km away
  37. 2.51km W of Kensington, CA · 1769 days ago · 5 km deep · 63 km away · felt by 965
  38. 2.01km W of Kensington, CA · 1769 days ago · 5 km deep · 64 km away · felt by 43
  39. 2.79km ENE of Morgan Hill, CA · 1769 days ago · 2 km deep · 60 km away · felt by 38
  40. 1.74km S of Portola Valley, CA · 1766 days ago · 6 km deep · 67 km away
  41. 1.74km S of Portola Valley, CA · 1766 days ago · 6 km deep · 67 km away · felt by 1
  42. 1.81km NE of San Ramon, CA · 1765 days ago · 9 km deep · 33 km away · felt by 1
  43. 2.54km N of San Leandro, CA · 1764 days ago · 3 km deep · 48 km away · felt by 150
  44. 1.66km WSW of Colma, CA · 1761 days ago · 9 km deep · 80 km away · felt by 2
  45. 2.22km E of Pacheco, CA · 1761 days ago · 16 km deep · 50 km away
  46. 1.87km ENE of Gilroy, CA · 1759 days ago · 9 km deep · 76 km away
  47. 1.63km SSW of Half Moon Bay, CA · 1757 days ago · 10 km deep · 78 km away
  48. 1.63km SE of Concord, CA · 1756 days ago · 12 km deep · 43 km away
  49. 2.23km SSW of Half Moon Bay, CA · 1755 days ago · 10 km deep · 78 km away
  50. 2.32km SW of Discovery Bay, CA · 1755 days ago · 18 km deep · 22 km away
  51. 1.63km SSW of Half Moon Bay, CA · 1755 days ago · 10 km deep · 78 km away
  52. 1.89km NE of Morgan Hill, CA · 1754 days ago · 2 km deep · 58 km away
  53. 1.95km NNW of Hollister, CA · 1754 days ago · 10 km deep · 92 km away
  54. 1.63km SSE of San Juan Bautista, CA · 1753 days ago · 6 km deep · 99 km away
  55. 2.010km E of Alum Rock, CA · 1751 days ago · 9 km deep · 39 km away
  56. 2.01km N of Pacifica, CA · 1749 days ago · 8 km deep · 77 km away · felt by 14
  57. 1.91km E of Hollister, CA · 1747 days ago · 6 km deep · 97 km away · felt by 3
  58. 1.71km WNW of Danville, CA · 1747 days ago · 8 km deep · 37 km away · felt by 2
  59. 1.91km NW of Danville, CA · 1747 days ago · 8 km deep · 37 km away · felt by 3
  60. 1.62km NE of San Ramon, CA · 1746 days ago · 10 km deep · 32 km away · felt by 2

The first 60 of 67.

Before

  1. 1.66km N of San Leandro, CA · 1797 days ago · 9 km deep · 48 km away
  2. 1.61km SSE of San Ramon, CA · 1797 days ago · 8 km deep · 32 km away
  3. 1.52km SW of San Francisco Zoo, CA · 1798 days ago · 7 km deep · 80 km away · felt by 1
  4. 2.09km SW of Brentwood, CA · 1798 days ago · 17 km deep · 25 km away
  5. 2.68km ENE of Alum Rock, CA · 1804 days ago · 7 km deep · 37 km away · felt by 18
  6. 1.922km NE of Morgan Hill, CA · 1805 days ago · 9 km deep · 50 km away
  7. 1.64km ENE of Burlingame, CA · 1806 days ago · 8 km deep · 64 km away · felt by 2
  8. 1.53km SW of Hollister, CA · 1806 days ago · 8 km deep · 99 km away · felt by 1
  9. 1.96km ENE of Hollister, CA · 1806 days ago · 8 km deep · 95 km away
  10. 1.61km SW of Alamo, CA · 1806 days ago · 9 km deep · 41 km away
  11. 2.36km SSW of Gilroy, CA · 1807 days ago · 4 km deep · 83 km away · felt by 2
  12. 2.04km ENE of El Sobrante, CA · 1807 days ago · 9 km deep · 65 km away · felt by 2
  13. 2.84km ENE of El Sobrante, CA · 1807 days ago · 10 km deep · 64 km away · felt by 328
  14. 2.14km ENE of El Sobrante, CA · 1808 days ago · 9 km deep · 65 km away · felt by 3
  15. 1.610km NE of Milpitas, CA · 1810 days ago · 4 km deep · 30 km away
  16. 1.91km S of San Ramon, CA · 1811 days ago · 8 km deep · 32 km away · felt by 4
  17. 1.69km SE of Sunol, CA · 1812 days ago · 9 km deep · 26 km away
  18. 2.94km SSW of San Juan Bautista, CA · 1812 days ago · 7 km deep · 99 km away · felt by 20
  19. 1.65km SW of Clayton, CA · 1812 days ago · 10 km deep · 39 km away
  20. 2.816km SSE of Livermore, CA · 1813 days ago · 3 km deep · 18 km away · felt by 70

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc73648625. Read Sun, Oct 4, 2026, 8:53 AM UTC.