California earthquakes

M1.6 earthquake 1km W of Alamo, CA

A magnitude 1.6 earthquake struck 1km W of Alamo, CA on Wed, Jun 9, 2021, 11:56 AM PDT (18:56 UTC), 9 km (6 mi) below the surface.

A larger quake followed: M3.9 3km N of San Lorenzo, CA. This one was a foreshock.

Alamo 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
1.6 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
2021-06-09 18:56:37 UTC
Depth
9.2 km (5.7 mi), shallow
Epicenter
37.851° N, 122.039° 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 0.2 km horizontally, 0.2 km in depth
Magnitude uncertainty
±0.21
Depth from
From location
Station coverage gap
104°
Stations used
35

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 73 in the 60 days after this one and 34 in the 30 days before it.

After

  1. 1.99km E of Alum Rock, CA · 1941 days ago · 7 km deep · 60 km away
  2. 1.77km SSW of Muir Beach, CA · 1940 days ago · 9 km deep · 49 km away
  3. 2.55km NE of Alum Rock, CA · 1937 days ago · 1 km deep · 56 km away · felt by 69
  4. 1.65km NE of Alum Rock, CA · 1937 days ago · 0 km deep · 55 km away
  5. 2.110km ESE of Angwin, CA · 1936 days ago · 6 km deep · 80 km away
  6. 1.614km ESE of Angwin, CA · 1936 days ago · 0 km deep · 79 km away
  7. 1.613km ESE of Angwin, CA · 1936 days ago · 0 km deep · 80 km away
  8. 1.56km WSW of Daly City, CA · 1936 days ago · 9 km deep · 48 km away
  9. 1.512km E of Angwin, CA · 1935 days ago · 8 km deep · 85 km away
  10. 1.912km NE of Milpitas, CA · 1934 days ago · 5 km deep · 44 km away
  11. 2.415km E of Seven Trees, CA · 1934 days ago · 8 km deep · 68 km away · felt by 1
  12. 2.62km ENE of Hayward, CA · 1934 days ago · 7 km deep · 22 km away · felt by 139
  13. 1.86km E of Fremont, CA · 1933 days ago · 9 km deep · 37 km away
  14. 2.115km N of Morgan Hill, CA · 1932 days ago · 1 km deep · 73 km away
  15. 1.82km ESE of Berkeley, CA · 1931 days ago · 9 km deep · 19 km away
  16. 2.820km SE of Livermore, CA · 1930 days ago · 1 km deep · 50 km away · felt by 23
  17. 2.520km SE of Livermore, CA · 1929 days ago · 1 km deep · 50 km away · felt by 8
  18. 2.03km NE of Portola Valley, CA · 1929 days ago · 4 km deep · 52 km away · felt by 2
  19. 1.714km N of Morgan Hill, CA · 1926 days ago · 5 km deep · 75 km away
  20. 2.114km N of Morgan Hill, CA · 1926 days ago · 5 km deep · 75 km away
  21. 1.816km N of Morgan Hill, CA · 1925 days ago · 5 km deep · 72 km away
  22. 1.715km E of Seven Trees, CA · 1925 days ago · 2 km deep · 70 km away
  23. 1.614km E of Angwin, CA · 1925 days ago · 5 km deep · 82 km away
  24. 1.86km ESE of Santa Rosa, CA · 1924 days ago · 9 km deep · 83 km away
  25. 3.93km N of San Lorenzo, CA · 1924 days ago · 9 km deep · 18 km away · felt by 12,071 · tsunami flag
  26. 2.49km NE of San Martin, CA · 1923 days ago · 5 km deep · 92 km away · felt by 1
  27. 2.76km SSW of San Ramon, CA · 1922 days ago · 8 km deep · 14 km away · felt by 117
  28. 1.91km NNW of Crockett, CA · 1922 days ago · 8 km deep · 28 km away · felt by 2
  29. 1.66km SSW of Calistoga, CA · 1922 days ago · 8 km deep · 91 km away
  30. 1.79km N of Boulder Creek, CA · 1921 days ago · 12 km deep · 72 km away
  31. 1.73km WNW of Castro Valley, CA · 1920 days ago · 8 km deep · 17 km away
  32. 2.09km NE of Milpitas, CA · 1919 days ago · 8 km deep · 45 km away · felt by 3
  33. 1.812km ENE of Angwin, CA · 1917 days ago · 5 km deep · 87 km away
  34. 1.615km E of Angwin, CA · 1917 days ago · 6 km deep · 82 km away
  35. 1.814km E of Angwin, CA · 1917 days ago · 0 km deep · 81 km away
  36. 1.719km SE of Livermore, CA · 1916 days ago · 2 km deep · 50 km away
  37. 3.611km ESE of Angwin, CA · 1914 days ago · 10 km deep · 82 km away · felt by 99
  38. 1.714km E of Angwin, CA · 1914 days ago · 10 km deep · 82 km away
  39. 1.712km ESE of Angwin, CA · 1914 days ago · 6 km deep · 82 km away
  40. 1.910km ESE of Angwin, CA · 1914 days ago · 6 km deep · 83 km away
  41. 1.514km E of Angwin, CA · 1914 days ago · 3 km deep · 82 km away
  42. 1.810km ESE of Angwin, CA · 1914 days ago · 6 km deep · 82 km away
  43. 2.12km ENE of Berkeley, CA · 1911 days ago · 9 km deep · 19 km away · felt by 11
  44. 1.79km NNE of Alum Rock, CA · 1911 days ago · 9 km deep · 52 km away
  45. 1.88km SW of Loyola, CA · 1911 days ago · 6 km deep · 62 km away
  46. 1.613km N of Morgan Hill, CA · 1906 days ago · 4 km deep · 76 km away
  47. 1.63km NNW of Piedmont, CA · 1905 days ago · 8 km deep · 18 km away
  48. 1.610km ESE of Angwin, CA · 1903 days ago · 4 km deep · 81 km away
  49. 1.68km SW of Calistoga, CA · 1903 days ago · 6 km deep · 93 km away
  50. 1.97km ESE of Roseland, CA · 1901 days ago · 9 km deep · 81 km away
  51. 1.73km NNW of Byron, CA · 1901 days ago · 4 km deep · 35 km away
  52. 1.611km ENE of Yountville, CA · 1898 days ago · 6 km deep · 66 km away
  53. 1.68km S of Muir Beach, CA · 1898 days ago · 5 km deep · 48 km away
  54. 2.18km S of Muir Beach, CA · 1897 days ago · 4 km deep · 47 km away · felt by 2
  55. 1.85km E of Fremont, CA · 1897 days ago · 9 km deep · 36 km away
  56. 1.72km E of Berkeley, CA · 1896 days ago · 9 km deep · 19 km away
  57. 2.16km SSW of Calistoga, CA · 1896 days ago · 9 km deep · 89 km away · felt by 4
  58. 2.32km WNW of Concord, CA · 1895 days ago · 17 km deep · 14 km away · felt by 4
  59. 1.516km SSE of Livermore, CA · 1891 days ago · 3 km deep · 45 km away
  60. 1.94km SSW of Colma, CA · 1891 days ago · 6 km deep · 45 km away · felt by 2

The first 60 of 73.

Before

  1. 1.73km N of Piedmont, CA · 1943 days ago · 6 km deep · 17 km away
  2. 1.611km WSW of Saratoga, CA · 1947 days ago · 8 km deep · 69 km away
  3. 2.49km SE of Livermore, CA · 1947 days ago · 7 km deep · 40 km away
  4. 2.19km E of Alum Rock, CA · 1949 days ago · 6 km deep · 60 km away · felt by 31
  5. 1.79km E of Alum Rock, CA · 1949 days ago · 6 km deep · 60 km away
  6. 3.69km E of Alum Rock, CA · 1949 days ago · 7 km deep · 60 km away · felt by 1,401
  7. 1.67km SW of Los Altos Hills, CA · 1951 days ago · 9 km deep · 59 km away
  8. 2.42km ENE of Pacheco, CA · 1951 days ago · 15 km deep · 16 km away
  9. 1.82km ENE of Oakland, CA · 1953 days ago · 10 km deep · 16 km away
  10. 2.24km WSW of Daly City, CA · 1953 days ago · 12 km deep · 46 km away · felt by 8
  11. 1.61km SW of Danville, CA · 1954 days ago · 10 km deep · 5 km away
  12. 1.79km NNE of Yountville, CA · 1956 days ago · 6 km deep · 73 km away
  13. 2.010km E of Blackhawk, CA · 1956 days ago · 15 km deep · 21 km away · felt by 2
  14. 1.89km E of Blackhawk, CA · 1956 days ago · 13 km deep · 21 km away
  15. 1.95km NW of Dublin, CA · 1957 days ago · 4 km deep · 14 km away
  16. 1.65km NW of Dublin, CA · 1958 days ago · 7 km deep · 14 km away
  17. 2.16km WNW of Dublin, CA · 1958 days ago · 7 km deep · 14 km away · felt by 18
  18. 2.17km ESE of Roseland, CA · 1958 days ago · 10 km deep · 81 km away · felt by 2
  19. 2.25km WNW of Dublin, CA · 1958 days ago · 7 km deep · 14 km away · felt by 10
  20. 2.06km WNW of Dublin, CA · 1958 days ago · 7 km deep · 14 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc73572016. Read Sun, Oct 4, 2026, 2:33 PM UTC.