California earthquakes

M2.1 earthquake 3km WNW of Pacifica, CA

A magnitude 2.1 earthquake struck 3km WNW of Pacifica, CA on Sun, Apr 11, 2021, 8:47 PM PDT (03:47 UTC), 9 km (5 mi) below the surface.

A larger quake followed: M3.6 15km N of Morgan Hill, CA. This one was a foreshock.

Pacifica 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
2.1 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
2021-04-12 03:47:05 UTC
Depth
8.7 km (5.4 mi), shallow
Epicenter
37.626° N, 122.514° W
Felt reports
13
Tsunami flag
No
Status
Reviewed by a seismologist

Did you feel it?

13 people reported to the USGS what they felt; the strongest reported shaking was III, weak shaking.

Did You Feel It? map: shaking reported by the public
Shaking reported by the public, by area. Map: USGS Did You Feel It?

How well it is located

Reviewed by a seismologist.

Location uncertainty
About 0.1 km horizontally, 0.1 km in depth
Magnitude uncertainty
±0.15
Depth from
From location
Station coverage gap
115°
Stations used
80

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 57 in the 60 days after this one and 22 in the 30 days before it.

After

  1. 1.59km ENE of Milpitas, CA · 1998 days ago · 7 km deep · 64 km away
  2. 2.214km SE of Livermore, CA · 1998 days ago · 4 km deep · 74 km away · felt by 2
  3. 1.810km ENE of Morgan Hill, CA · 1996 days ago · 6 km deep · 100 km away
  4. 2.36km WSW of Colma, CA · 1993 days ago · 8 km deep · 4 km away · felt by 13
  5. 1.83km S of Concord, CA · 1991 days ago · 10 km deep · 56 km away
  6. 1.910km SSE of Elmira, CA · 1991 days ago · 23 km deep · 92 km away
  7. 1.64km W of Kenwood, CA · 1990 days ago · 7 km deep · 87 km away
  8. 1.83km WSW of Oakley, CA · 1988 days ago · 17 km deep · 78 km away
  9. 3.615km N of Morgan Hill, CA · 1988 days ago · 8 km deep · 87 km away · felt by 2,036
  10. 2.515km N of Morgan Hill, CA · 1988 days ago · 7 km deep · 87 km away · felt by 52
  11. 2.52km N of Piedmont, CA · 1986 days ago · 6 km deep · 35 km away · felt by 1,284
  12. 1.77km W of Newark, CA · 1986 days ago · 14 km deep · 36 km away
  13. 1.54km SW of Glen Ellen, CA · 1985 days ago · 5 km deep · 79 km away
  14. 2.82km N of Piedmont, CA · 1985 days ago · 6 km deep · 35 km away · felt by 2,614
  15. 2.16km W of Yountville, CA · 1984 days ago · 5 km deep · 87 km away
  16. 2.11km WNW of Danville, CA · 1980 days ago · 7 km deep · 49 km away · felt by 3
  17. 1.64km NNW of Pacifica, CA · 1978 days ago · 6 km deep · 3 km away
  18. 2.510km E of Alum Rock, CA · 1976 days ago · 7 km deep · 77 km away · felt by 2
  19. 1.50km NW of Danville, CA · 1976 days ago · 7 km deep · 50 km away
  20. 2.315km E of Seven Trees, CA · 1975 days ago · 5 km deep · 83 km away · felt by 1
  21. 1.62km W of Concord, CA · 1974 days ago · 3 km deep · 57 km away
  22. 1.91km N of East Richmond Heights, CA · 1974 days ago · 9 km deep · 40 km away
  23. 2.312km SW of Muir Beach, CA · 1974 days ago · 6 km deep · 23 km away
  24. 1.95km W of Glen Ellen, CA · 1972 days ago · 5 km deep · 83 km away
  25. 1.55km WSW of Lexington Hills, CA · 1971 days ago · 13 km deep · 68 km away
  26. 1.61km ENE of Alameda, CA · 1968 days ago · 7 km deep · 29 km away
  27. 1.54km NW of Dublin, CA · 1968 days ago · 5 km deep · 49 km away
  28. 1.711km W of Bonny Doon, CA · 1966 days ago · 11 km deep · 68 km away
  29. 2.06km S of Calistoga, CA · 1965 days ago · 7 km deep · 100 km away · felt by 2
  30. 1.616km NE of Alum Rock, CA · 1965 days ago · 3 km deep · 75 km away
  31. 1.82km ESE of Berkeley, CA · 1964 days ago · 9 km deep · 35 km away
  32. 1.72km ESE of Berkeley, CA · 1964 days ago · 9 km deep · 35 km away
  33. 1.96km SW of Clayton, CA · 1963 days ago · 12 km deep · 56 km away · felt by 4
  34. 1.66km SE of St. Helena, CA · 1962 days ago · 10 km deep · 94 km away
  35. 1.65km NW of Dublin, CA · 1958 days ago · 6 km deep · 48 km away
  36. 2.25km NW of Dublin, CA · 1958 days ago · 3 km deep · 48 km away · felt by 46
  37. 2.06km WNW of Dublin, CA · 1958 days ago · 7 km deep · 47 km away
  38. 2.25km WNW of Dublin, CA · 1958 days ago · 7 km deep · 48 km away · felt by 10
  39. 2.17km ESE of Roseland, CA · 1958 days ago · 10 km deep · 86 km away · felt by 2
  40. 2.16km WNW of Dublin, CA · 1957 days ago · 7 km deep · 48 km away · felt by 18
  41. 1.65km NW of Dublin, CA · 1957 days ago · 7 km deep · 48 km away
  42. 1.95km NW of Dublin, CA · 1956 days ago · 4 km deep · 49 km away
  43. 1.89km E of Blackhawk, CA · 1955 days ago · 13 km deep · 66 km away
  44. 2.010km E of Blackhawk, CA · 1955 days ago · 15 km deep · 67 km away · felt by 2
  45. 1.79km NNE of Yountville, CA · 1955 days ago · 6 km deep · 95 km away
  46. 1.61km SW of Danville, CA · 1954 days ago · 10 km deep · 49 km away
  47. 2.24km WSW of Daly City, CA · 1953 days ago · 12 km deep · 6 km away · felt by 8
  48. 1.82km ENE of Oakland, CA · 1952 days ago · 10 km deep · 33 km away
  49. 2.42km ENE of Pacheco, CA · 1950 days ago · 15 km deep · 57 km away
  50. 1.67km SW of Los Altos Hills, CA · 1950 days ago · 9 km deep · 44 km away
  51. 3.69km E of Alum Rock, CA · 1948 days ago · 7 km deep · 75 km away · felt by 1,401
  52. 1.79km E of Alum Rock, CA · 1948 days ago · 6 km deep · 75 km away
  53. 2.19km E of Alum Rock, CA · 1948 days ago · 6 km deep · 75 km away · felt by 31
  54. 2.49km SE of Livermore, CA · 1946 days ago · 7 km deep · 73 km away
  55. 1.611km WSW of Saratoga, CA · 1946 days ago · 8 km deep · 54 km away
  56. 1.73km N of Piedmont, CA · 1943 days ago · 6 km deep · 35 km away
  57. 1.61km W of Alamo, CA · 1942 days ago · 9 km deep · 49 km away

Before

  1. 2.09km ENE of Milpitas, CA · 2001 days ago · 7 km deep · 64 km away
  2. 2.314km SE of Livermore, CA · 2002 days ago · 4 km deep · 74 km away · felt by 2
  3. 3.36km S of Calistoga, CA · 2002 days ago · 9 km deep · 100 km away · felt by 262
  4. 2.914km SE of Livermore, CA · 2002 days ago · 4 km deep · 74 km away · felt by 70
  5. 1.81km SW of East Richmond Heights, CA · 2005 days ago · 4 km deep · 39 km away
  6. 2.56km S of Calistoga, CA · 2005 days ago · 9 km deep · 100 km away · felt by 10
  7. 2.40km W of Pleasant Hill, CA · 2005 days ago · 11 km deep · 53 km away · felt by 54
  8. 2.420km SE of Livermore, CA · 2007 days ago · 2 km deep · 82 km away
  9. 1.610km NE of Milpitas, CA · 2011 days ago · 5 km deep · 63 km away
  10. 2.14km WSW of Pleasanton, CA · 2011 days ago · 8 km deep · 53 km away
  11. 1.99km NNE of Alum Rock, CA · 2013 days ago · 6 km deep · 67 km away
  12. 2.67km E of Alum Rock, CA · 2014 days ago · 8 km deep · 73 km away · felt by 90
  13. 2.515km ENE of Alum Rock, CA · 2019 days ago · 5 km deep · 78 km away · felt by 2
  14. 1.710km SE of Sunol, CA · 2020 days ago · 5 km deep · 62 km away
  15. 1.811km ENE of Yountville, CA · 2020 days ago · 7 km deep · 93 km away · felt by 1
  16. 2.810km ENE of Yountville, CA · 2020 days ago · 11 km deep · 92 km away · felt by 42
  17. 2.515km N of Morgan Hill, CA · 2022 days ago · 6 km deep · 88 km away · felt by 7
  18. 1.65km S of Yountville, CA · 2022 days ago · 5 km deep · 83 km away
  19. 2.710km WNW of American Canyon, CA · 2025 days ago · 9 km deep · 67 km away · felt by 20
  20. 1.616km N of Morgan Hill, CA · 2026 days ago · 7 km deep · 86 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc73548485. Read Sat, Oct 3, 2026, 9:56 PM UTC.