California earthquakes

M1.5 earthquake 9km WNW of Cobb, CA

A magnitude 1.5 earthquake struck 9km WNW of Cobb, CA on Tue, Sep 7, 2021, 12:34 AM PDT (07:34 UTC), 2 km (1 mi) below the surface.

A larger quake followed: M3.2 3km ESE of Santa Rosa, 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.

Open the live map with earthquakes

The earthquake

Magnitude
1.5 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
2021-09-07 07:34:39 UTC
Depth
2.1 km (1.3 mi), shallow
Epicenter
38.841° N, 122.821° 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
±0.09
Depth from
From location
Station coverage gap
61°
Stations used
47

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 173 in the 60 days after this one and 93 in the 30 days before it.

After

  1. 1.83km SW of Anderson Springs, CA · 1852 days ago · 2 km deep · 13 km away · felt by 1
  2. 1.57km W of Cobb, CA · 1852 days ago · 2 km deep · 1 km away
  3. 1.77km NW of The Geysers, CA · 1852 days ago · 3 km deep · 2 km away
  4. 1.87km ENE of Brooktrails, CA · 1852 days ago · 6 km deep · 82 km away
  5. 2.15km NW of The Geysers, CA · 1852 days ago · 2 km deep · 4 km away
  6. 2.36km W of Cobb, CA · 1851 days ago · 3 km deep · 3 km away
  7. 1.76km WNW of Cobb, CA · 1850 days ago · 2 km deep · 3 km away
  8. 1.63km SSE of Redwood Valley, CA · 1850 days ago · 6 km deep · 55 km away
  9. 2.05km ENE of Talmage, CA · 1849 days ago · 9 km deep · 43 km away
  10. 1.714km W of Redwood Valley, CA · 1849 days ago · 5 km deep · 68 km away
  11. 2.55km NW of The Geysers, CA · 1848 days ago · 2 km deep · 4 km away
  12. 1.710km NNW of Redwood Valley, CA · 1847 days ago · 8 km deep · 67 km away
  13. 1.610km WNW of Calistoga, CA · 1845 days ago · 4 km deep · 29 km away · felt by 1
  14. 1.86km W of Allendale, CA · 1845 days ago · 21 km deep · 83 km away
  15. 1.712km SE of Point Arena, CA · 1844 days ago · 4 km deep · 66 km away
  16. 1.83km ENE of The Geysers, CA · 1844 days ago · 1 km deep · 10 km away
  17. 2.01km WNW of Stony Gorge Reservoir, CA · 1844 days ago · 13 km deep · 87 km away
  18. 2.45km WNW of The Geysers, CA · 1844 days ago · 4 km deep · 5 km away
  19. 1.714km SE of Lake Pillsbury, CA · 1843 days ago · 1 km deep · 52 km away
  20. 1.510km W of Redwood Valley, CA · 1843 days ago · 5 km deep · 64 km away
  21. 1.614km NNE of Brooktrails, CA · 1843 days ago · 8 km deep · 92 km away
  22. 1.62km NW of Anderson Springs, CA · 1842 days ago · 2 km deep · 12 km away
  23. 1.913km W of Alder Springs, CA · 1842 days ago · 0 km deep · 91 km away
  24. 1.96km ESE of Lake Pillsbury, CA · 1842 days ago · 5 km deep · 61 km away
  25. 1.55km NW of The Geysers, CA · 1841 days ago · 3 km deep · 4 km away
  26. 2.09km WNW of The Geysers, CA · 1840 days ago · 2 km deep · 3 km away
  27. 1.50km WNW of The Geysers, CA · 1840 days ago · 1 km deep · 9 km away
  28. 1.66km NW of Boonville, CA · 1840 days ago · 0 km deep · 57 km away
  29. 1.83km SE of Larkfield-Wikiup, CA · 1838 days ago · 5 km deep · 39 km away · felt by 5
  30. 1.610km NE of Healdsburg, CA · 1838 days ago · 4 km deep · 20 km away
  31. 1.86km SE of Lake Pillsbury, CA · 1838 days ago · 2 km deep · 59 km away
  32. 2.63km NW of The Geysers, CA · 1838 days ago · 3 km deep · 6 km away · felt by 3
  33. 1.73km SW of Anderson Springs, CA · 1837 days ago · 2 km deep · 13 km away
  34. 1.76km NW of The Geysers, CA · 1837 days ago · 3 km deep · 3 km away
  35. 1.76km NW of The Geysers, CA · 1837 days ago · 3 km deep · 3 km away
  36. 1.73km NNW of The Geysers, CA · 1836 days ago · 1 km deep · 6 km away
  37. 2.71km SSE of Vallejo, CA · 1836 days ago · 11 km deep · 97 km away · felt by 481
  38. 1.63km SW of Anderson Springs, CA · 1834 days ago · 2 km deep · 13 km away
  39. 2.012km ESE of Boonville, CA · 1834 days ago · 0 km deep · 39 km away
  40. 2.322km N of Lake Pillsbury, CA · 1834 days ago · 13 km deep · 86 km away · felt by 2
  41. 1.63km SE of The Geysers, CA · 1833 days ago · 2 km deep · 12 km away
  42. 1.76km SW of Calistoga, CA · 1831 days ago · 8 km deep · 38 km away
  43. 1.91km NW of The Geysers, CA · 1831 days ago · 2 km deep · 8 km away
  44. 1.814km SE of Lake Pillsbury, CA · 1831 days ago · 7 km deep · 53 km away
  45. 1.816km NE of Upper Lake, CA · 1830 days ago · -1 km deep · 49 km away
  46. 3.23km ESE of Santa Rosa, CA · 1830 days ago · 9 km deep · 46 km away · felt by 1,048
  47. 1.710km NNW of Redwood Valley, CA · 1829 days ago · 6 km deep · 67 km away
  48. 2.71km NE of The Geysers, CA · 1829 days ago · 0 km deep · 9 km away · felt by 3
  49. 1.82km SSW of Cobb, CA · 1829 days ago · 1 km deep · 9 km away
  50. 1.51km E of The Geysers, CA · 1829 days ago · 0 km deep · 10 km away
  51. 1.93km SSW of Anderson Springs, CA · 1829 days ago · 2 km deep · 15 km away
  52. 1.51km NNW of The Geysers, CA · 1829 days ago · 1 km deep · 8 km away
  53. 1.611km NE of Napa, CA · 1828 days ago · 9 km deep · 75 km away
  54. 1.62km N of The Geysers, CA · 1828 days ago · 2 km deep · 8 km away
  55. 1.910km NW of The Geysers, CA · 1828 days ago · 2 km deep · 1 km away
  56. 1.55km WNW of The Geysers, CA · 1828 days ago · 1 km deep · 4 km away
  57. 1.59km NE of Santa Rosa, CA · 1828 days ago · 4 km deep · 41 km away
  58. 1.74km W of Cobb, CA · 1828 days ago · 2 km deep · 5 km away
  59. 1.73km ENE of Talmage, CA · 1827 days ago · 9 km deep · 44 km away
  60. 1.78km W of Cobb, CA · 1827 days ago · 2 km deep · 1 km away

The first 60 of 173.

Before

  1. 1.66km WNW of The Geysers, CA · 1853 days ago · 2 km deep · 4 km away
  2. 2.07km NW of The Geysers, CA · 1853 days ago · 3 km deep · 3 km away
  3. 2.56km NW of The Geysers, CA · 1853 days ago · 3 km deep · 3 km away · felt by 1
  4. 3.17km NW of The Geysers, CA · 1853 days ago · 2 km deep · 3 km away · felt by 2
  5. 2.31km NNW of The Geysers, CA · 1854 days ago · 1 km deep · 8 km away
  6. 1.57km S of Calistoga, CA · 1854 days ago · 8 km deep · 41 km away
  7. 1.62km NW of The Geysers, CA · 1854 days ago · 2 km deep · 8 km away
  8. 2.21km NW of The Geysers, CA · 1854 days ago · 2 km deep · 8 km away
  9. 3.74km ENE of Talmage, CA · 1855 days ago · 10 km deep · 42 km away · felt by 199
  10. 1.74km ENE of Talmage, CA · 1856 days ago · 6 km deep · 43 km away
  11. 1.513km N of Brooktrails, CA · 1856 days ago · 8 km deep · 94 km away
  12. 1.813km WNW of Alder Springs, CA · 1857 days ago · 3 km deep · 94 km away
  13. 1.72km SW of Cobb, CA · 1857 days ago · 2 km deep · 8 km away
  14. 1.92km WNW of Cobb, CA · 1857 days ago · 1 km deep · 6 km away
  15. 3.84km ENE of Talmage, CA · 1857 days ago · 9 km deep · 43 km away · felt by 316
  16. 1.77km W of Cobb, CA · 1858 days ago · 2 km deep · 1 km away
  17. 1.73km SW of Angwin, CA · 1858 days ago · 4 km deep · 43 km away
  18. 1.69km WNW of Cobb, CA · 1859 days ago · 2 km deep · 0 km away
  19. 1.610km WNW of The Geysers, CA · 1859 days ago · 2 km deep · 3 km away
  20. 1.512km WNW of The Geysers, CA · 1859 days ago · 2 km deep · 5 km away

Earthquakes todayCalifornia earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc73621571. Read Sun, Oct 4, 2026, 6:40 AM UTC.