California earthquakes

M2.3 earthquake 3 km NE of Tobin, California

A magnitude 2.3 earthquake struck 3 km NE of Tobin, California on Mon, Aug 1, 1983, 10:39 AM PDT (17:39 UTC), 3 km (2 mi) below the surface.

A larger quake followed: M2.7 11 km WSW of Doyle, California. This one was a foreshock.

Quincy 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
2.3 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
1983-08-01 17:39:24 UTC
Depth
2.7 km (1.7 mi), shallow
Epicenter
39.962° N, 121.287° 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 2.9 km horizontally, 8.5 km in depth
Magnitude uncertainty
±0.24
Depth from
From location
Station coverage gap
236°, poorly surrounded by stations
Stations used
8

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 48 in the 60 days after this one and 18 in the 30 days before it.

After

  1. 2.52 km N of Tobin, California · 15768 days ago · 5 km deep · 1 km away
  2. 2.325 km E of Hat Creek, California · 15767 days ago · 8 km deep · 99 km away
  3. 2.01 km SW of Iron Horse, California · 15766 days ago · 5 km deep · 69 km away
  4. 2.63 km E of Prattville, California · 15765 days ago · 0 km deep · 31 km away
  5. 2.65 km SSW of Hamilton City, California · 15765 days ago · 17 km deep · 71 km away
  6. 2.015 km WSW of Chester, California · 15764 days ago · 10 km deep · 36 km away
  7. 1.69 km W of Chester, California · 15764 days ago · 1 km deep · 37 km away
  8. 2.34 km SW of Graeagle, California · 15763 days ago · 6 km deep · 60 km away
  9. 2.00 km NE of Clio, California · 15763 days ago · 0 km deep · 65 km away
  10. 2.16 km SE of Johnsville, California · 15763 days ago · 1 km deep · 61 km away
  11. 2.410 km SSW of Plumas Eureka (historical), California · 15763 days ago · 5 km deep · 55 km away
  12. 2.59 km SE of Sierraville, California · 15763 days ago · 7 km deep · 98 km away
  13. 1.93 km WSW of Chester, California · 15757 days ago · 3 km deep · 37 km away
  14. 2.49 km WSW of Chester, California · 15756 days ago · 5 km deep · 37 km away
  15. 2.212 km ENE of Bend, California · 15754 days ago · -1 km deep · 77 km away
  16. 1.60 km W of Chilcoot-Vinton, California · 15753 days ago · 18 km deep · 99 km away
  17. 2.312 km ENE of Butte Meadows, California · 15753 days ago · 33 km deep · 21 km away
  18. 2.212 km ESE of Cottonwood, California · 15752 days ago · 15 km deep · 84 km away
  19. 2.52 km NNW of Belden, California · 15752 days ago · 0 km deep · 8 km away
  20. 2.711 km WSW of Doyle, California · 15752 days ago · -2 km deep · 90 km away
  21. 1.911 km ENE of Mineral, California · 15752 days ago · 3 km deep · 51 km away
  22. 1.612 km N of Mineral, California · 15752 days ago · -2 km deep · 60 km away
  23. 1.814 km NNE of Mineral, California · 15752 days ago · 4 km deep · 60 km away
  24. 1.813 km NE of Bend, California · 15752 days ago · 15 km deep · 82 km away
  25. 2.75 km SSW of Doyle, California · 15751 days ago · -2 km deep · 99 km away
  26. 1.812 km NNE of Mineral, California · 15749 days ago · 1 km deep · 59 km away
  27. 1.815 km NNE of Mineral, California · 15749 days ago · 2 km deep · 61 km away
  28. 2.212 km ENE of Bend, California · 15744 days ago · 13 km deep · 77 km away
  29. 1.913 km E of Artois, California · 15743 days ago · 20 km deep · 75 km away
  30. 2.114 km SW of Milford, California · 15742 days ago · -2 km deep · 70 km away
  31. 2.15 km NNE of Belden, California · 15742 days ago · 4 km deep · 11 km away
  32. 1.66 km NE of Nord, California · 15741 days ago · 20 km deep · 56 km away
  33. 2.615 km E of Hat Creek, California · 15740 days ago · 14 km deep · 99 km away
  34. 1.83 km W of Storrie, California · 15737 days ago · 10 km deep · 8 km away
  35. 2.425 km NNW of Susanville, California · 15733 days ago · 0 km deep · 84 km away
  36. 2.311 km NE of Vina, California · 15732 days ago · -1 km deep · 58 km away
  37. 2.411 km ENE of Bend, California · 15729 days ago · 2 km deep · 77 km away
  38. 1.91 km NNW of Nord, California · 15724 days ago · 19 km deep · 61 km away
  39. 1.610 km W of Lake Almanor West, California · 15724 days ago · 14 km deep · 31 km away
  40. 1.713 km NNE of Mineral, California · 15722 days ago · -1 km deep · 60 km away
  41. 2.012 km ENE of Bend, California · 15722 days ago · -1 km deep · 78 km away
  42. 1.812 km NNE of Mineral, California · 15721 days ago · 2 km deep · 59 km away
  43. 2.212 km NNE of Mineral, California · 15721 days ago · 3 km deep · 59 km away
  44. 1.812 km NNE of Mineral, California · 15721 days ago · 2 km deep · 59 km away
  45. 2.111 km NNW of Sierra City, California · 15716 days ago · 5 km deep · 61 km away
  46. 1.615 km NNE of Mineral, California · 15715 days ago · 4 km deep · 62 km away
  47. 2.33 km E of Biggs, California · 15713 days ago · 5 km deep · 69 km away
  48. 2.18 km SE of Manton, California · 15712 days ago · 1 km deep · 64 km away

Before

  1. 2.114 km WNW of Richvale, California · 15768 days ago · 14 km deep · 71 km away
  2. 2.52 km NW of Storrie, California · 15769 days ago · 1 km deep · 6 km away
  3. 2.03 km N of Belden, California · 15774 days ago · 3 km deep · 9 km away
  4. 3.21 km WSW of Spring Garden, California · 15776 days ago · 14 km deep · 42 km away
  5. 2.34 km S of Canyondam, California · 15777 days ago · 8 km deep · 27 km away
  6. 2.36 km ESE of Butte Meadows, California · 15777 days ago · 1 km deep · 20 km away
  7. 1.717 km SE of Round Mountain, California · 15779 days ago · 10 km deep · 90 km away
  8. 2.115 km N of Princeton, California · 15780 days ago · 21 km deep · 77 km away
  9. 1.92 km ESE of Johnsville, California · 15781 days ago · 5 km deep · 58 km away
  10. 2.30 km W of Hamilton City, California · 15785 days ago · 22 km deep · 67 km away
  11. 1.67 km NNE of Oroville East, California · 15788 days ago · 11 km deep · 45 km away
  12. 2.04 km N of Oroville East, California · 15788 days ago · 2 km deep · 48 km away
  13. 2.73 km NNE of Tobin, California · 15790 days ago · 4 km deep · 1 km away
  14. 2.8Northern California · 15790 days ago · 5 km deep · 2 km away
  15. 3.120 km SE of Paynes Creek, California · 15790 days ago · 0 km deep · 48 km away
  16. 2.415 km N of Princeton, California · 15793 days ago · 22 km deep · 76 km away
  17. 1.812 km E of Bend, California · 15794 days ago · 7 km deep · 74 km away
  18. 2.413 km NNW of Cohasset, California · 15795 days ago · 4 km deep · 44 km away

Earthquakes todayCalifornia earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1099673. Read Fri, Oct 2, 2026, 3:06 PM UTC.