California earthquakes

M1.6 earthquake 3km ENE of Walnut Creek, CA

A magnitude 1.6 earthquake struck 3km ENE of Walnut Creek, CA on Wed, Jan 20, 2021, 3:44 AM PST (11:44 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M3.2 10km NE of Milpitas, CA. This one was a foreshock.

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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
2021-01-20 11:44:53 UTC
Depth
10.0 km (6.2 mi), shallow
Epicenter
37.921° N, 122.033° 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
±0.18
Depth from
From location
Station coverage gap
69°
Stations used
43

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 59 in the 60 days after this one and 43 in the 30 days before it.

After

  1. 1.86km E of Milpitas, CA · 2082 days ago · 2 km deep · 58 km away
  2. 2.06km WNW of San Francisco Zoo, CA · 2082 days ago · 9 km deep · 50 km away
  3. 1.93km S of Los Altos Hills, CA · 2082 days ago · 6 km deep · 64 km away · felt by 13
  4. 1.66km E of Santa Rosa, CA · 2081 days ago · 9 km deep · 79 km away · felt by 1
  5. 3.01km W of Concord, CA · 2081 days ago · 15 km deep · 5 km away · felt by 728
  6. 2.05km SW of Danville, CA · 2075 days ago · 9 km deep · 14 km away · felt by 1
  7. 1.79km NW of San Francisco Zoo, CA · 2074 days ago · 8 km deep · 50 km away
  8. 1.92km NW of Orinda, CA · 2074 days ago · 8 km deep · 15 km away · felt by 2
  9. 2.57km ENE of Rohnert Park, CA · 2072 days ago · 5 km deep · 71 km away · felt by 18
  10. 1.77km ENE of Rohnert Park, CA · 2072 days ago · 5 km deep · 71 km away
  11. 2.07km ENE of Rohnert Park, CA · 2072 days ago · 5 km deep · 71 km away · felt by 1
  12. 1.67km ENE of Rohnert Park, CA · 2072 days ago · 5 km deep · 71 km away
  13. 2.12km WNW of Castro Valley, CA · 2070 days ago · 5 km deep · 26 km away · felt by 12
  14. 2.63km ESE of Berkeley, CA · 2069 days ago · 10 km deep · 20 km away · felt by 661
  15. 1.53km ESE of Berkeley, CA · 2069 days ago · 10 km deep · 20 km away · felt by 6
  16. 2.212km WSW of Saratoga, CA · 2067 days ago · 10 km deep · 76 km away · felt by 2
  17. 2.09km E of Alum Rock, CA · 2066 days ago · 9 km deep · 66 km away
  18. 3.210km NE of Milpitas, CA · 2064 days ago · 5 km deep · 50 km away · felt by 436
  19. 1.810km NE of Milpitas, CA · 2064 days ago · 4 km deep · 51 km away · felt by 2
  20. 1.510km NE of Milpitas, CA · 2064 days ago · 4 km deep · 51 km away · felt by 1
  21. 1.610km NE of Milpitas, CA · 2064 days ago · 4 km deep · 51 km away
  22. 1.611km NE of Milpitas, CA · 2064 days ago · 4 km deep · 50 km away
  23. 2.011km NE of Milpitas, CA · 2063 days ago · 4 km deep · 51 km away
  24. 2.18km ESE of Fremont, CA · 2063 days ago · 7 km deep · 45 km away · felt by 2
  25. 1.68km NE of Windsor, CA · 2063 days ago · 7 km deep · 99 km away
  26. 2.00km SE of Pleasant Hill, CA · 2063 days ago · 9 km deep · 4 km away · felt by 4
  27. 1.96km N of Alum Rock, CA · 2062 days ago · 0 km deep · 59 km away · felt by 11
  28. 2.78km ESE of Fremont, CA · 2062 days ago · 7 km deep · 45 km away · felt by 145
  29. 1.84km NE of Pleasanton, CA · 2062 days ago · 12 km deep · 32 km away
  30. 1.68km ESE of Fremont, CA · 2057 days ago · 6 km deep · 45 km away
  31. 1.613km ESE of Hidden Valley Lake, CA · 2057 days ago · 7 km deep · 99 km away
  32. 2.23km SW of Green Valley, CA · 2057 days ago · 11 km deep · 37 km away
  33. 1.916km E of Seven Trees, CA · 2055 days ago · 4 km deep · 78 km away
  34. 2.61km ENE of Union City, CA · 2054 days ago · 5 km deep · 36 km away · felt by 326
  35. 2.111km NE of Milpitas, CA · 2053 days ago · 5 km deep · 51 km away
  36. 1.78km NE of Windsor, CA · 2051 days ago · 4 km deep · 99 km away
  37. 1.65km E of Alum Rock, CA · 2050 days ago · 2 km deep · 65 km away
  38. 1.82km ESE of Berkeley, CA · 2050 days ago · 5 km deep · 20 km away · felt by 2
  39. 2.32km SE of Danville, CA · 2050 days ago · 8 km deep · 14 km away · felt by 43
  40. 1.96km E of Milpitas, CA · 2049 days ago · 0 km deep · 58 km away · felt by 14
  41. 1.62km N of San Ramon, CA · 2048 days ago · 7 km deep · 14 km away
  42. 1.88km NE of Windsor, CA · 2048 days ago · 6 km deep · 99 km away
  43. 2.310km ENE of Morgan Hill, CA · 2047 days ago · 5 km deep · 94 km away
  44. 2.013km E of Angwin, CA · 2047 days ago · 7 km deep · 75 km away
  45. 2.113km E of Angwin, CA · 2047 days ago · 8 km deep · 75 km away · felt by 1
  46. 1.63km WSW of Blackhawk, CA · 2047 days ago · 7 km deep · 15 km away
  47. 1.66km ESE of Fairview, CA · 2046 days ago · 10 km deep · 29 km away
  48. 2.213km WNW of Calistoga, CA · 2045 days ago · 6 km deep · 99 km away · felt by 1
  49. 1.85km ESE of St. Helena, CA · 2042 days ago · 12 km deep · 71 km away · felt by 1
  50. 2.015km E of Seven Trees, CA · 2041 days ago · 6 km deep · 76 km away
  51. 1.96km ESE of St. Helena, CA · 2041 days ago · 7 km deep · 70 km away
  52. 2.110km SE of Sunol, CA · 2041 days ago · 3 km deep · 47 km away
  53. 3.16km WSW of St. Helena, CA · 2039 days ago · 11 km deep · 76 km away · felt by 234
  54. 1.93km ESE of Berkeley, CA · 2038 days ago · 7 km deep · 20 km away · felt by 5
  55. 1.75km WNW of Angwin, CA · 2038 days ago · 4 km deep · 85 km away
  56. 1.76km SSW of Yountville, CA · 2029 days ago · 7 km deep · 56 km away · felt by 1
  57. 1.62km E of Vallejo, CA · 2029 days ago · 7 km deep · 26 km away
  58. 1.616km N of Morgan Hill, CA · 2026 days ago · 7 km deep · 79 km away
  59. 2.710km WNW of American Canyon, CA · 2025 days ago · 9 km deep · 43 km away · felt by 20

Before

  1. 2.18km ENE of Alum Rock, CA · 2083 days ago · 7 km deep · 64 km away
  2. 1.87km NW of San Francisco Zoo, CA · 2083 days ago · 6 km deep · 49 km away
  3. 2.37km NW of San Francisco Zoo, CA · 2083 days ago · 5 km deep · 49 km away · felt by 6
  4. 2.73km NNW of Santa Rosa, CA · 2084 days ago · 5 km deep · 86 km away · felt by 1,374
  5. 1.610km ESE of Alum Rock, CA · 2084 days ago · 2 km deep · 70 km away
  6. 2.22km S of Los Altos Hills, CA · 2084 days ago · 5 km deep · 63 km away · felt by 10
  7. 1.815km NNE of Morgan Hill, CA · 2087 days ago · 8 km deep · 82 km away
  8. 1.73km S of Los Altos Hills, CA · 2088 days ago · 5 km deep · 64 km away
  9. 2.12km WNW of Concord, CA · 2088 days ago · 13 km deep · 6 km away · felt by 106
  10. 3.62km W of Concord, CA · 2088 days ago · 15 km deep · 6 km away · felt by 3,784
  11. 1.914km E of Yountville, CA · 2090 days ago · 10 km deep · 56 km away · felt by 1
  12. 2.02km NNW of Kensington, CA · 2090 days ago · 11 km deep · 22 km away · felt by 15
  13. 1.63km ESE of Union City, CA · 2092 days ago · 6 km deep · 37 km away
  14. 1.716km E of Seven Trees, CA · 2092 days ago · 6 km deep · 77 km away
  15. 1.916km E of Seven Trees, CA · 2093 days ago · 7 km deep · 77 km away
  16. 2.34km ENE of Walnut Creek, CA · 2095 days ago · 10 km deep · 0 km away · felt by 28
  17. 3.08km NE of Alum Rock, CA · 2095 days ago · 10 km deep · 59 km away · felt by 442
  18. 1.92km SE of Pacheco, CA · 2096 days ago · 14 km deep · 6 km away · felt by 3
  19. 2.63km WNW of Concord, CA · 2097 days ago · 16 km deep · 7 km away · felt by 84
  20. 1.89km ENE of Milpitas, CA · 2097 days ago · 8 km deep · 53 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc73513795. Read Sat, Oct 3, 2026, 8:17 PM UTC.