California earthquakes

M2.3 earthquake 2km WNW of Tomales, CA

A magnitude 2.3 earthquake struck 2km WNW of Tomales, CA on Wed, Aug 11, 2021, 7:59 PM PDT (02:59 UTC), 4 km (3 mi) below the surface.

A larger quake followed: M3.4 3km N of San Leandro, 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
2.3 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
2021-08-12 02:59:16 UTC
Depth
4.0 km (2.5 mi), shallow
Epicenter
38.252° N, 122.921° W
Felt reports
17
Tsunami flag
No
Status
Reviewed by a seismologist

Did you feel it?

17 people reported to the USGS what they felt; the strongest reported shaking was IV, light 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 0.2 km horizontally, 0.5 km in depth
Magnitude uncertainty
±0.18
Depth from
From location
Station coverage gap
103°
Stations used
73

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 136 in the 60 days after this one and 81 in the 30 days before it.

After

  1. 1.61km NE of Berkeley, CA · 1878 days ago · 6 km deep · 71 km away
  2. 1.67km NW of The Geysers, CA · 1878 days ago · 2 km deep · 65 km away · felt by 2
  3. 1.66km NW of The Geysers, CA · 1876 days ago · 3 km deep · 63 km away
  4. 1.58km SW of Calistoga, CA · 1876 days ago · 9 km deep · 39 km away
  5. 2.46km N of Cobb, CA · 1875 days ago · 3 km deep · 72 km away · felt by 10
  6. 1.78km NW of The Geysers, CA · 1875 days ago · 2 km deep · 65 km away
  7. 2.413km NE of Yountville, CA · 1875 days ago · 5 km deep · 63 km away · felt by 1
  8. 1.81km ENE of Alamo, CA · 1874 days ago · 13 km deep · 90 km away
  9. 1.513km E of Angwin, CA · 1874 days ago · 3 km deep · 64 km away
  10. 2.512km ESE of Angwin, CA · 1874 days ago · 0 km deep · 62 km away · felt by 5
  11. 1.75km NW of The Geysers, CA · 1874 days ago · 3 km deep · 63 km away
  12. 1.62km NNE of The Geysers, CA · 1872 days ago · 1 km deep · 62 km away
  13. 1.82km SSW of Bodega Bay, CA · 1872 days ago · 11 km deep · 14 km away
  14. 1.82km SSW of Bodega Bay, CA · 1871 days ago · 10 km deep · 14 km away
  15. 2.12km SSW of Bodega Bay, CA · 1871 days ago · 10 km deep · 14 km away
  16. 1.74km SSE of The Geysers, CA · 1871 days ago · 1 km deep · 57 km away · felt by 1
  17. 2.41km ESE of The Geysers, CA · 1870 days ago · 2 km deep · 60 km away
  18. 1.911km SW of The Geysers, CA · 1870 days ago · 6 km deep · 52 km away
  19. 1.511km SW of The Geysers, CA · 1870 days ago · 6 km deep · 52 km away
  20. 1.86km WNW of The Geysers, CA · 1870 days ago · 3 km deep · 62 km away
  21. 2.28km WNW of Cobb, CA · 1868 days ago · 2 km deep · 66 km away
  22. 1.64km SW of Colma, CA · 1867 days ago · 7 km deep · 76 km away
  23. 1.82km NW of Pacifica, CA · 1867 days ago · 8 km deep · 78 km away · felt by 2
  24. 2.07km W of Calistoga, CA · 1867 days ago · 8 km deep · 42 km away · felt by 8
  25. 1.77km WSW of St. Helena, CA · 1866 days ago · 8 km deep · 42 km away
  26. 1.611km NE of Napa, CA · 1865 days ago · 10 km deep · 66 km away
  27. 2.43km W of Anderson Springs, CA · 1865 days ago · 2 km deep · 61 km away
  28. 2.44km S of Talmage, CA · 1864 days ago · 8 km deep · 96 km away · felt by 7
  29. 2.510km NW of The Geysers, CA · 1864 days ago · 2 km deep · 66 km away
  30. 1.83km SW of Alamo, CA · 1864 days ago · 12 km deep · 89 km away
  31. 1.65km W of Cobb, CA · 1863 days ago · 1 km deep · 65 km away
  32. 2.53km ESE of Larkfield-Wikiup, CA · 1863 days ago · 7 km deep · 33 km away · felt by 122
  33. 1.57km WSW of St. Helena, CA · 1863 days ago · 9 km deep · 42 km away
  34. 2.14km S of Larkfield-Wikiup, CA · 1863 days ago · 7 km deep · 30 km away · felt by 5
  35. 1.91km WNW of The Geysers, CA · 1863 days ago · 1 km deep · 60 km away
  36. 1.66km NW of The Geysers, CA · 1862 days ago · 3 km deep · 63 km away
  37. 1.59km WNW of Cobb, CA · 1862 days ago · 2 km deep · 66 km away
  38. 1.97km NW of The Geysers, CA · 1862 days ago · 2 km deep · 65 km away
  39. 2.73km WNW of Cobb, CA · 1861 days ago · 0 km deep · 66 km away · felt by 6
  40. 2.23km WNW of Cobb, CA · 1861 days ago · 0 km deep · 66 km away
  41. 1.93km WNW of Cobb, CA · 1861 days ago · 0 km deep · 66 km away
  42. 1.63km WNW of Cobb, CA · 1861 days ago · 0 km deep · 66 km away
  43. 1.91km NNE of The Geysers, CA · 1861 days ago · 2 km deep · 61 km away
  44. 1.95km NW of The Geysers, CA · 1861 days ago · 2 km deep · 63 km away
  45. 2.16km NW of The Geysers, CA · 1860 days ago · 3 km deep · 64 km away
  46. 1.73km ENE of The Geysers, CA · 1860 days ago · 2 km deep · 62 km away
  47. 1.810km NNE of Windsor, CA · 1860 days ago · 7 km deep · 43 km away
  48. 1.88km NNE of Black Point-Green Point, CA · 1859 days ago · 8 km deep · 40 km away
  49. 1.512km WNW of The Geysers, CA · 1859 days ago · 2 km deep · 65 km away
  50. 1.610km WNW of The Geysers, CA · 1859 days ago · 2 km deep · 64 km away
  51. 1.69km WNW of Cobb, CA · 1858 days ago · 2 km deep · 66 km away
  52. 1.73km SW of Angwin, CA · 1858 days ago · 4 km deep · 52 km away
  53. 1.77km W of Cobb, CA · 1858 days ago · 2 km deep · 66 km away
  54. 1.92km WNW of Cobb, CA · 1856 days ago · 1 km deep · 66 km away
  55. 1.72km SW of Cobb, CA · 1856 days ago · 2 km deep · 64 km away
  56. 1.71km N of Bolinas, CA · 1854 days ago · 9 km deep · 42 km away
  57. 2.21km NW of The Geysers, CA · 1854 days ago · 2 km deep · 61 km away
  58. 1.62km NW of The Geysers, CA · 1854 days ago · 2 km deep · 61 km away
  59. 1.57km S of Calistoga, CA · 1853 days ago · 8 km deep · 41 km away
  60. 2.31km NNW of The Geysers, CA · 1853 days ago · 1 km deep · 61 km away

The first 60 of 136.

Before

  1. 1.612km ESE of Hidden Valley Lake, CA · 1879 days ago · 8 km deep · 70 km away
  2. 1.73km E of The Geysers, CA · 1879 days ago · 1 km deep · 61 km away
  3. 1.84km NNW of The Geysers, CA · 1879 days ago · 2 km deep · 63 km away
  4. 1.810km NE of Napa, CA · 1879 days ago · 13 km deep · 64 km away
  5. 1.88km NW of The Geysers, CA · 1880 days ago · 2 km deep · 65 km away
  6. 1.88km NW of The Geysers, CA · 1881 days ago · 2 km deep · 65 km away
  7. 2.01km NNW of Pleasant Hill, CA · 1881 days ago · 11 km deep · 81 km away · felt by 12
  8. 2.212km ESE of Hidden Valley Lake, CA · 1881 days ago · 10 km deep · 71 km away
  9. 1.68km NW of The Geysers, CA · 1882 days ago · 2 km deep · 65 km away
  10. 1.64km E of Cloverdale, CA · 1884 days ago · 0 km deep · 62 km away · felt by 3
  11. 1.52km ESE of Berkeley, CA · 1884 days ago · 4 km deep · 72 km away
  12. 1.54km E of Moraga, CA · 1885 days ago · 3 km deep · 87 km away
  13. 1.95km WNW of Cobb, CA · 1885 days ago · 2 km deep · 66 km away
  14. 1.87km S of Muir Beach, CA · 1886 days ago · 13 km deep · 58 km away
  15. 1.63km WSW of Cobb, CA · 1886 days ago · 2 km deep · 64 km away
  16. 1.59km SE of Sea Ranch, CA · 1886 days ago · 5 km deep · 60 km away
  17. 1.710km NNE of Angwin, CA · 1887 days ago · 7 km deep · 64 km away
  18. 2.04km E of Cloverdale, CA · 1887 days ago · 0 km deep · 62 km away · felt by 1
  19. 1.810km E of Clearlake, CA · 1888 days ago · 3 km deep · 88 km away
  20. 2.15km SSE of Cloverdale, CA · 1888 days ago · 3 km deep · 57 km away · felt by 10

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc73609036. Read Sat, Oct 3, 2026, 8:25 PM UTC.