California earthquakes

M1.6 earthquake 2km W of Concord, CA

A magnitude 1.6 earthquake struck 2km W of Concord, CA on Sat, May 8, 2021, 4:26 PM PDT (23:26 UTC), 3 km (2 mi) below the surface.

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

Concord 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
2021-05-08 23:26:18 UTC
Depth
3.1 km (2.0 mi), shallow
Epicenter
37.970° N, 122.031° 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, 0.3 km in depth
Magnitude uncertainty
±0.19
Depth from
From location
Station coverage gap
71°
Stations used
31

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 79 in the 60 days after this one and 28 in the 30 days before it.

After

  1. 1.91km N of East Richmond Heights, CA · 1974 days ago · 9 km deep · 25 km away
  2. 2.312km SW of Muir Beach, CA · 1974 days ago · 6 km deep · 60 km away
  3. 1.76km SW of Calistoga, CA · 1973 days ago · 8 km deep · 81 km away
  4. 1.95km W of Glen Ellen, CA · 1972 days ago · 5 km deep · 66 km away
  5. 1.55km WSW of Lexington Hills, CA · 1971 days ago · 13 km deep · 91 km away
  6. 1.58km SE of Middletown, CA · 1968 days ago · 5 km deep · 93 km away
  7. 1.61km ENE of Alameda, CA · 1968 days ago · 7 km deep · 29 km away
  8. 1.54km NW of Dublin, CA · 1967 days ago · 5 km deep · 28 km away
  9. 2.215km NNE of Angwin, CA · 1965 days ago · 8 km deep · 88 km away
  10. 2.015km NNE of Angwin, CA · 1965 days ago · 9 km deep · 88 km away
  11. 1.615km NNE of Angwin, CA · 1965 days ago · 9 km deep · 88 km away
  12. 1.714km NNE of Angwin, CA · 1965 days ago · 9 km deep · 88 km away
  13. 2.06km S of Calistoga, CA · 1965 days ago · 7 km deep · 78 km away · felt by 2
  14. 1.616km NE of Alum Rock, CA · 1964 days ago · 3 km deep · 65 km away
  15. 1.82km ESE of Berkeley, CA · 1964 days ago · 9 km deep · 22 km away
  16. 1.72km ESE of Berkeley, CA · 1963 days ago · 9 km deep · 22 km away
  17. 1.96km SW of Clayton, CA · 1963 days ago · 12 km deep · 9 km away · felt by 4
  18. 1.513km ESE of Hidden Valley Lake, CA · 1962 days ago · 8 km deep · 94 km away
  19. 1.66km SE of St. Helena, CA · 1962 days ago · 10 km deep · 65 km away
  20. 1.65km NW of Dublin, CA · 1958 days ago · 6 km deep · 27 km away
  21. 2.25km NW of Dublin, CA · 1958 days ago · 3 km deep · 27 km away · felt by 46
  22. 2.06km WNW of Dublin, CA · 1958 days ago · 7 km deep · 27 km away
  23. 2.25km WNW of Dublin, CA · 1958 days ago · 7 km deep · 27 km away · felt by 10
  24. 2.17km ESE of Roseland, CA · 1957 days ago · 10 km deep · 72 km away · felt by 2
  25. 2.16km WNW of Dublin, CA · 1957 days ago · 7 km deep · 27 km away · felt by 18
  26. 1.65km NW of Dublin, CA · 1957 days ago · 7 km deep · 27 km away
  27. 1.95km NW of Dublin, CA · 1956 days ago · 4 km deep · 27 km away
  28. 1.89km E of Blackhawk, CA · 1955 days ago · 13 km deep · 26 km away
  29. 2.010km E of Blackhawk, CA · 1955 days ago · 15 km deep · 26 km away · felt by 2
  30. 1.79km NNE of Yountville, CA · 1955 days ago · 6 km deep · 60 km away
  31. 1.61km SW of Danville, CA · 1954 days ago · 10 km deep · 17 km away
  32. 2.24km WSW of Daly City, CA · 1952 days ago · 12 km deep · 53 km away · felt by 8
  33. 1.82km ENE of Oakland, CA · 1952 days ago · 10 km deep · 24 km away
  34. 2.42km ENE of Pacheco, CA · 1950 days ago · 15 km deep · 3 km away
  35. 1.67km SW of Los Altos Hills, CA · 1950 days ago · 9 km deep · 73 km away
  36. 3.69km E of Alum Rock, CA · 1948 days ago · 7 km deep · 72 km away · felt by 1,401
  37. 1.79km E of Alum Rock, CA · 1948 days ago · 6 km deep · 72 km away
  38. 2.19km E of Alum Rock, CA · 1948 days ago · 6 km deep · 71 km away · felt by 31
  39. 2.49km SE of Livermore, CA · 1946 days ago · 7 km deep · 49 km away
  40. 1.611km WSW of Saratoga, CA · 1946 days ago · 8 km deep · 82 km away
  41. 1.73km N of Piedmont, CA · 1943 days ago · 6 km deep · 22 km away
  42. 1.61km W of Alamo, CA · 1942 days ago · 9 km deep · 13 km away
  43. 1.99km E of Alum Rock, CA · 1941 days ago · 7 km deep · 71 km away
  44. 1.77km SSW of Muir Beach, CA · 1939 days ago · 9 km deep · 53 km away
  45. 2.55km NE of Alum Rock, CA · 1936 days ago · 1 km deep · 68 km away · felt by 69
  46. 1.65km NE of Alum Rock, CA · 1936 days ago · 0 km deep · 67 km away
  47. 2.110km ESE of Angwin, CA · 1935 days ago · 6 km deep · 68 km away
  48. 1.614km ESE of Angwin, CA · 1935 days ago · 0 km deep · 67 km away
  49. 1.613km ESE of Angwin, CA · 1935 days ago · 0 km deep · 68 km away
  50. 2.311km E of Hidden Valley Lake, CA · 1935 days ago · 10 km deep · 99 km away
  51. 1.56km WSW of Daly City, CA · 1935 days ago · 9 km deep · 55 km away
  52. 1.512km E of Angwin, CA · 1935 days ago · 8 km deep · 73 km away
  53. 1.912km NE of Milpitas, CA · 1934 days ago · 5 km deep · 56 km away
  54. 2.415km E of Seven Trees, CA · 1933 days ago · 8 km deep · 80 km away · felt by 1
  55. 2.62km ENE of Hayward, CA · 1933 days ago · 7 km deep · 36 km away · felt by 139
  56. 1.86km E of Fremont, CA · 1932 days ago · 9 km deep · 49 km away
  57. 2.115km N of Morgan Hill, CA · 1931 days ago · 1 km deep · 85 km away
  58. 1.711km E of Hidden Valley Lake, CA · 1931 days ago · 8 km deep · 98 km away
  59. 1.82km ESE of Berkeley, CA · 1930 days ago · 9 km deep · 22 km away
  60. 2.820km SE of Livermore, CA · 1929 days ago · 1 km deep · 58 km away · felt by 23

The first 60 of 79.

Before

  1. 2.315km E of Seven Trees, CA · 1974 days ago · 5 km deep · 81 km away · felt by 1
  2. 1.50km NW of Danville, CA · 1976 days ago · 7 km deep · 16 km away
  3. 2.510km E of Alum Rock, CA · 1976 days ago · 7 km deep · 74 km away · felt by 2
  4. 1.64km NNW of Pacifica, CA · 1978 days ago · 6 km deep · 55 km away
  5. 2.11km WNW of Danville, CA · 1980 days ago · 7 km deep · 16 km away · felt by 3
  6. 2.16km W of Yountville, CA · 1983 days ago · 5 km deep · 60 km away
  7. 2.82km N of Piedmont, CA · 1984 days ago · 6 km deep · 23 km away · felt by 2,614
  8. 1.54km SW of Glen Ellen, CA · 1985 days ago · 5 km deep · 62 km away
  9. 1.77km W of Newark, CA · 1986 days ago · 14 km deep · 49 km away
  10. 2.52km N of Piedmont, CA · 1986 days ago · 6 km deep · 23 km away · felt by 1,284
  11. 2.515km N of Morgan Hill, CA · 1988 days ago · 7 km deep · 86 km away · felt by 52
  12. 3.615km N of Morgan Hill, CA · 1988 days ago · 8 km deep · 85 km away · felt by 2,036
  13. 1.83km WSW of Oakley, CA · 1988 days ago · 17 km deep · 25 km away
  14. 1.64km W of Kenwood, CA · 1990 days ago · 7 km deep · 69 km away
  15. 1.910km SSE of Elmira, CA · 1991 days ago · 23 km deep · 37 km away
  16. 1.83km S of Concord, CA · 1991 days ago · 10 km deep · 3 km away
  17. 1.66km SSW of Calistoga, CA · 1992 days ago · 6 km deep · 80 km away
  18. 2.36km WSW of Colma, CA · 1993 days ago · 8 km deep · 55 km away · felt by 13
  19. 1.63km NNW of Angwin, CA · 1994 days ago · 0 km deep · 80 km away
  20. 1.66km SSW of Calistoga, CA · 1995 days ago · 9 km deep · 80 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc73560010. Read Sat, Oct 3, 2026, 6:21 PM UTC.