California earthquakes

M1.9 earthquake 5km WNW of Cobb, CA

A magnitude 1.9 earthquake struck 5km WNW of Cobb, CA on Thu, Aug 5, 2021, 10:06 AM PDT (17:06 UTC), 2 km (2 mi) below the surface.

A larger quake followed: M3.8 4km ENE of Talmage, CA. This one was a foreshock.

Cobb 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
1.9 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
2021-08-05 17:06:44 UTC
Depth
2.4 km (1.5 mi), shallow
Epicenter
38.833° N, 122.777° 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 0.1 km horizontally, 0.2 km in depth
Magnitude uncertainty
±0.18
Depth from
From location
Station coverage gap
37°
Stations used
57

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 158 in the 60 days after this one and 175 in the 30 days before it.

After

  1. 1.64km E of Cloverdale, CA · 1884 days ago · 0 km deep · 17 km away · felt by 3
  2. 2.912km WNW of Alder Springs, CA · 1883 days ago · 4 km deep · 94 km away · felt by 2
  3. 2.311km WNW of Alder Springs, CA · 1882 days ago · -1 km deep · 94 km away
  4. 2.411km W of Alder Springs, CA · 1882 days ago · 7 km deep · 92 km away
  5. 2.411km W of Alder Springs, CA · 1882 days ago · 0 km deep · 92 km away
  6. 1.812km WNW of Alder Springs, CA · 1882 days ago · 0 km deep · 94 km away
  7. 1.68km NW of The Geysers, CA · 1882 days ago · 2 km deep · 4 km away
  8. 2.012km W of Alder Springs, CA · 1882 days ago · 7 km deep · 93 km away
  9. 2.212km ESE of Hidden Valley Lake, CA · 1881 days ago · 10 km deep · 31 km away
  10. 1.88km NW of The Geysers, CA · 1880 days ago · 2 km deep · 4 km away
  11. 1.88km NW of The Geysers, CA · 1880 days ago · 2 km deep · 4 km away
  12. 1.710km N of Lake Pillsbury, CA · 1880 days ago · 8 km deep · 75 km away
  13. 1.810km NE of Napa, CA · 1879 days ago · 13 km deep · 74 km away
  14. 1.76km E of Willits, CA · 1879 days ago · 6 km deep · 78 km away
  15. 1.84km NNW of The Geysers, CA · 1879 days ago · 2 km deep · 3 km away
  16. 1.73km E of The Geysers, CA · 1879 days ago · 1 km deep · 7 km away
  17. 1.612km ESE of Hidden Valley Lake, CA · 1879 days ago · 8 km deep · 31 km away
  18. 2.32km WNW of Tomales, CA · 1879 days ago · 4 km deep · 66 km away · felt by 17
  19. 1.67km NW of The Geysers, CA · 1877 days ago · 2 km deep · 3 km away · felt by 2
  20. 1.819km NE of Upper Lake, CA · 1877 days ago · 8 km deep · 49 km away · felt by 1
  21. 2.710km WNW of Alder Springs, CA · 1877 days ago · 3 km deep · 94 km away · felt by 1
  22. 1.66km NW of The Geysers, CA · 1876 days ago · 3 km deep · 4 km away
  23. 1.58km SW of Calistoga, CA · 1876 days ago · 9 km deep · 35 km away
  24. 2.112km W of Alder Springs, CA · 1876 days ago · 8 km deep · 93 km away
  25. 2.111km W of Alder Springs, CA · 1876 days ago · 3 km deep · 93 km away
  26. 2.46km N of Cobb, CA · 1875 days ago · 3 km deep · 7 km away · felt by 10
  27. 1.78km NW of The Geysers, CA · 1875 days ago · 2 km deep · 3 km away
  28. 2.413km NE of Yountville, CA · 1875 days ago · 5 km deep · 58 km away · felt by 1
  29. 2.910km N of Lake Pillsbury, CA · 1875 days ago · 10 km deep · 75 km away · felt by 1
  30. 1.610km N of Lake Pillsbury, CA · 1875 days ago · 7 km deep · 75 km away · felt by 1
  31. 1.513km E of Angwin, CA · 1874 days ago · 3 km deep · 51 km away
  32. 2.512km ESE of Angwin, CA · 1874 days ago · 0 km deep · 51 km away · felt by 5
  33. 1.75km NW of The Geysers, CA · 1874 days ago · 3 km deep · 3 km away
  34. 1.88km NNW of Redwood Valley, CA · 1873 days ago · 1 km deep · 69 km away
  35. 1.62km NNE of The Geysers, CA · 1872 days ago · 1 km deep · 5 km away
  36. 1.82km SSW of Bodega Bay, CA · 1871 days ago · 11 km deep · 63 km away
  37. 1.82km SSW of Bodega Bay, CA · 1871 days ago · 10 km deep · 62 km away
  38. 2.12km SSW of Bodega Bay, CA · 1871 days ago · 10 km deep · 63 km away
  39. 1.74km SSE of The Geysers, CA · 1871 days ago · 1 km deep · 10 km away · felt by 1
  40. 2.41km ESE of The Geysers, CA · 1870 days ago · 2 km deep · 7 km away
  41. 1.911km SW of The Geysers, CA · 1870 days ago · 6 km deep · 15 km away
  42. 2.112km WNW of Alder Springs, CA · 1870 days ago · 3 km deep · 94 km away
  43. 1.511km SW of The Geysers, CA · 1870 days ago · 6 km deep · 15 km away
  44. 1.86km WNW of The Geysers, CA · 1870 days ago · 3 km deep · 5 km away
  45. 2.28km WNW of Cobb, CA · 1868 days ago · 2 km deep · 3 km away
  46. 2.07km W of Calistoga, CA · 1867 days ago · 8 km deep · 31 km away · felt by 8
  47. 1.813km W of Alder Springs, CA · 1866 days ago · 2 km deep · 93 km away · felt by 1
  48. 1.98km WNW of Point Arena, CA · 1866 days ago · 6 km deep · 88 km away
  49. 1.77km WSW of St. Helena, CA · 1866 days ago · 8 km deep · 43 km away
  50. 1.611km NE of Napa, CA · 1865 days ago · 10 km deep · 74 km away
  51. 2.43km W of Anderson Springs, CA · 1865 days ago · 2 km deep · 8 km away
  52. 2.44km S of Talmage, CA · 1864 days ago · 8 km deep · 45 km away · felt by 7
  53. 2.510km NW of The Geysers, CA · 1864 days ago · 2 km deep · 5 km away
  54. 1.65km W of Cobb, CA · 1863 days ago · 1 km deep · 1 km away
  55. 2.53km ESE of Larkfield-Wikiup, CA · 1863 days ago · 7 km deep · 37 km away · felt by 122
  56. 1.57km WSW of St. Helena, CA · 1863 days ago · 9 km deep · 44 km away
  57. 2.14km S of Larkfield-Wikiup, CA · 1863 days ago · 7 km deep · 39 km away · felt by 5
  58. 1.91km WNW of The Geysers, CA · 1863 days ago · 1 km deep · 6 km away
  59. 1.66km NW of The Geysers, CA · 1862 days ago · 3 km deep · 4 km away
  60. 1.59km WNW of Cobb, CA · 1862 days ago · 2 km deep · 4 km away

The first 60 of 158.

Before

  1. 2.012km W of Alder Springs, CA · 1885 days ago · 8 km deep · 94 km away
  2. 1.715km SE of Lake Pillsbury, CA · 1885 days ago · 2 km deep · 52 km away
  3. 2.27km ESE of Willits, CA · 1886 days ago · 5 km deep · 76 km away
  4. 2.37km ESE of Willits, CA · 1886 days ago · 6 km deep · 76 km away
  5. 1.712km W of Alder Springs, CA · 1886 days ago · 2 km deep · 93 km away
  6. 2.912km W of Alder Springs, CA · 1886 days ago · 4 km deep · 93 km away
  7. 1.63km WSW of Cobb, CA · 1886 days ago · 2 km deep · 3 km away
  8. 2.812km W of Alder Springs, CA · 1886 days ago · 6 km deep · 93 km away · felt by 1
  9. 2.011km WNW of Alder Springs, CA · 1886 days ago · 4 km deep · 93 km away
  10. 1.59km SE of Sea Ranch, CA · 1886 days ago · 5 km deep · 57 km away
  11. 2.212km W of Alder Springs, CA · 1886 days ago · 8 km deep · 93 km away
  12. 1.710km NNE of Angwin, CA · 1886 days ago · 7 km deep · 38 km away
  13. 2.04km E of Cloverdale, CA · 1887 days ago · 0 km deep · 17 km away · felt by 1
  14. 2.512km W of Alder Springs, CA · 1887 days ago · -1 km deep · 93 km away · felt by 1
  15. 2.212km W of Alder Springs, CA · 1887 days ago · 5 km deep · 93 km away
  16. 1.68km NNW of Lake Pillsbury, CA · 1887 days ago · 10 km deep · 74 km away
  17. 1.813km W of Alder Springs, CA · 1887 days ago · 1 km deep · 93 km away
  18. 2.211km W of Alder Springs, CA · 1887 days ago · 1 km deep · 92 km away
  19. 1.912km W of Alder Springs, CA · 1887 days ago · -1 km deep · 93 km away
  20. 1.912km WNW of Alder Springs, CA · 1887 days ago · 5 km deep · 94 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc73606146. Read Sat, Oct 3, 2026, 6:18 PM UTC.