California earthquakes

M2.2 earthquake 3 km ENE of Waldon, California

A magnitude 2.2 earthquake struck 3 km ENE of Waldon, California on Fri, Sep 9, 1977, 10:30 AM PDT (17:30 UTC), 9 km (5 mi) below the surface.

A larger quake followed: M3.7 7 km ENE of Patterson, California. This one was a foreshock.

Waldon 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
2.2 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
1977-09-09 17:30:01 UTC
Depth
8.7 km (5.4 mi), shallow
Epicenter
37.932° N, 122.020° 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, 0.5 km in depth
Magnitude uncertainty
±0.15
Depth from
From location
Station coverage gap
40°
Stations used
26

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 49 in the 60 days after this one and 63 in the 30 days before it.

After

  1. 3.38 km E of American Canyon, California · 17920 days ago · 4 km deep · 29 km away
  2. 2.39 km S of Green Valley, California · 17920 days ago · 2 km deep · 29 km away
  3. 1.54 km NE of Santa Rosa, California · 17919 days ago · 8 km deep · 83 km away
  4. 1.87 km ENE of Seven Trees, California · 17919 days ago · 6 km deep · 73 km away
  5. 2.013 km SSE of Livermore, California · 17913 days ago · 5 km deep · 49 km away
  6. 2.1Northern California · 17909 days ago · 7 km deep · 83 km away
  7. 2.9Northern California · 17906 days ago · 7 km deep · 69 km away
  8. 1.58 km ESE of East Foothills, California · 17906 days ago · 7 km deep · 69 km away
  9. 1.514 km E of Seven Trees, California · 17905 days ago · 1 km deep · 77 km away
  10. 2.02 km NNW of Pittsburg, California · 17903 days ago · 18 km deep · 17 km away
  11. 1.914 km ENE of East Foothills, California · 17902 days ago · 7 km deep · 65 km away
  12. 1.86 km WNW of Saratoga, California · 17898 days ago · 10 km deep · 73 km away
  13. 2.7Northern California · 17897 days ago · 2 km deep · 92 km away
  14. 2.0Northern California · 17897 days ago · 8 km deep · 76 km away
  15. 2.514 km ESE of Suisun, California · 17895 days ago · 19 km deep · 28 km away
  16. 2.58 km ESE of East Foothills, California · 17893 days ago · 8 km deep · 69 km away
  17. 2.111 km NNE of Morgan Hill, California · 17892 days ago · 5 km deep · 85 km away
  18. 2.05 km W of Glen Ellen, California · 17891 days ago · 8 km deep · 68 km away
  19. 2.24 km E of East Foothills, California · 17890 days ago · 1 km deep · 65 km away
  20. 2.05 km ESE of East Foothills, California · 17889 days ago · 0 km deep · 67 km away
  21. 1.61 km SSW of Portola Valley, California · 17889 days ago · 7 km deep · 65 km away
  22. 1.89 km ESE of Lexington Hills, California · 17889 days ago · 11 km deep · 91 km away
  23. 2.78 km ENE of Patterson, California · 17889 days ago · 17 km deep · 99 km away
  24. 1.720 km NNE of Morgan Hill, California · 17888 days ago · 4 km deep · 82 km away
  25. 3.77 km ENE of Patterson, California · 17888 days ago · 15 km deep · 99 km away
  26. 2.42 km E of North Gate, California · 17888 days ago · 15 km deep · 5 km away
  27. 1.710 km ENE of Patterson, California · 17887 days ago · 13 km deep · 99 km away
  28. 1.917 km E of East Foothills, California · 17886 days ago · 6 km deep · 74 km away
  29. 3.35 km WSW of Glen Ellen, California · 17882 days ago · 11 km deep · 66 km away
  30. 1.96 km SW of Glen Ellen, California · 17881 days ago · 7 km deep · 66 km away
  31. 1.716 km NNE of Morgan Hill, California · 17881 days ago · 7 km deep · 83 km away
  32. 2.015 km N of Morgan Hill, California · 17880 days ago · 7 km deep · 81 km away
  33. 2.35 km SW of Glen Ellen, California · 17880 days ago · 10 km deep · 66 km away
  34. 1.914 km E of Seven Trees, California · 17876 days ago · 3 km deep · 78 km away
  35. 1.715 km E of Seven Trees, California · 17876 days ago · 3 km deep · 78 km away
  36. 1.712 km ESE of Angwin, California · 17871 days ago · 9 km deep · 73 km away
  37. 1.88 km S of Calistoga, California · 17871 days ago · 6 km deep · 80 km away
  38. 3.58 km S of Green Valley, California · 17870 days ago · 0 km deep · 30 km away
  39. 3.15 km WNW of Broadmoor, California · 17870 days ago · 5 km deep · 52 km away
  40. 2.96 km WNW of Broadmoor, California · 17870 days ago · 5 km deep · 53 km away
  41. 2.66 km E of East Foothills, California · 17870 days ago · 6 km deep · 65 km away
  42. 2.01 km E of Larkfield-Wikiup, California · 17868 days ago · 4 km deep · 90 km away
  43. 2.01 km ESE of Larkfield-Wikiup, California · 17868 days ago · 4 km deep · 90 km away
  44. 1.912 km N of Morgan Hill, California · 17867 days ago · 4 km deep · 84 km away
  45. 2.18 km SE of Livermore, California · 17865 days ago · 6 km deep · 44 km away
  46. 2.08 km SE of Livermore, California · 17865 days ago · 6 km deep · 44 km away
  47. 1.69 km SE of Livermore, California · 17865 days ago · 5 km deep · 45 km away
  48. 2.2Northern California · 17865 days ago · 7 km deep · 68 km away
  49. 2.03 km WNW of Emeryville, California · 17864 days ago · 12 km deep · 28 km away

Before

  1. 1.84 km E of Fremont, California · 17923 days ago · 4 km deep · 43 km away
  2. 2.48 km E of American Canyon, California · 17924 days ago · 4 km deep · 29 km away
  3. 1.89 km ENE of Milpitas, California · 17925 days ago · 7 km deep · 54 km away
  4. 1.521 km SE of Livermore, California · 17925 days ago · 10 km deep · 57 km away
  5. 2.65 km ENE of East Foothills, California · 17925 days ago · 3 km deep · 63 km away
  6. 2.72 km S of Blackhawk, California · 17925 days ago · 7 km deep · 18 km away
  7. 3.79 km E of American Canyon, California · 17926 days ago · 10 km deep · 29 km away
  8. 1.8Northern California · 17927 days ago · 12 km deep · 21 km away
  9. 2.05 km N of Dublin, California · 17927 days ago · 10 km deep · 22 km away
  10. 1.87 km ENE of Larkfield-Wikiup, California · 17929 days ago · 5 km deep · 88 km away
  11. 2.210 km N of Pittsburg, California · 17929 days ago · 19 km deep · 23 km away
  12. 1.97 km WSW of Kenwood, California · 17931 days ago · 10 km deep · 73 km away
  13. 2.97 km WSW of Kenwood, California · 17931 days ago · 11 km deep · 74 km away
  14. 1.94 km NNE of Dublin, California · 17931 days ago · 8 km deep · 23 km away
  15. 2.32 km ENE of Berkeley, California · 17931 days ago · 10 km deep · 20 km away
  16. 1.76 km NNE of Pittsburg, California · 17932 days ago · 6 km deep · 22 km away
  17. 1.82 km E of North Gate, California · 17933 days ago · 13 km deep · 6 km away
  18. 1.710 km ENE of Blackhawk, California · 17933 days ago · 15 km deep · 20 km away
  19. 2.82 km E of North Gate, California · 17935 days ago · 15 km deep · 6 km away
  20. 1.63 km NE of Blackhawk, California · 17938 days ago · 5 km deep · 16 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1036715. Read Sun, Oct 4, 2026, 6:29 PM UTC.