California earthquakes

M1.8 earthquake 5 km WNW of Dobbins, California

A magnitude 1.8 earthquake struck 5 km WNW of Dobbins, California on Thu, Apr 4, 1985, 10:09 PM PST (06:09 UTC), 19 km (12 mi) below the surface.

A larger quake followed: M2.1 10 km NNW of Truckee, California. This one was a foreshock.

Dobbins 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
1.8 (md), micro
Local time
UTC
1985-04-05 06:09:23 UTC
Depth
18.9 km (11.8 mi), shallow
Epicenter
39.396° N, 121.261° 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 0.5 km horizontally, 0.5 km in depth
Magnitude uncertainty
±0.15
Depth from
From location
Station coverage gap
169°
Stations used
15

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 54 in the 60 days after this one and 25 in the 30 days before it.

After

  1. 2.110 km NNW of Truckee, California · 15145 days ago · 9 km deep · 90 km away
  2. 1.610 km N of Truckee, California · 15145 days ago · 8 km deep · 91 km away
  3. 1.80 km NNW of Prattville, California · 15140 days ago · 3 km deep · 91 km away
  4. 2.17 km NNW of Richvale, California · 15133 days ago · 5 km deep · 48 km away
  5. 3.710 km WSW of Meridian, California · 15132 days ago · 18 km deep · 73 km away
  6. 2.29 km WSW of Meridian, California · 15132 days ago · 12 km deep · 72 km away
  7. 2.88 km NNE of Arbuckle, California · 15131 days ago · 3 km deep · 73 km away
  8. 2.58 km WSW of Meridian, California · 15129 days ago · 12 km deep · 71 km away
  9. 2.57 km SW of Meridian, California · 15120 days ago · 10 km deep · 71 km away
  10. 2.710 km N of Truckee, California · 15116 days ago · 7 km deep · 92 km away
  11. 1.726km NE of Foresthill, CA · 15111 days ago · 14 km deep · 60 km away
  12. 2.31 km SW of Lake Almanor West, California · 15111 days ago · 3 km deep · 92 km away
  13. 1.612 km WSW of Williams, CA · 15103 days ago · 7 km deep · 93 km away
  14. 2.88 km WSW of Meridian, California · 15102 days ago · 0 km deep · 72 km away
  15. 1.514 km S of Hamilton City, California · 15102 days ago · 5 km deep · 67 km away
  16. 1.710 km N of Truckee, California · 15102 days ago · 11 km deep · 91 km away
  17. 2.35 km W of Meridian, California · 15101 days ago · 9 km deep · 68 km away
  18. 2.66 km SSW of Colusa, California · 15101 days ago · 21 km deep · 72 km away
  19. 3.28 km SSW of Colusa, California · 15100 days ago · 20 km deep · 72 km away
  20. 2.710 km WSW of Meridian, California · 15100 days ago · 8 km deep · 73 km away
  21. 2.56 km SSW of Colusa, California · 15100 days ago · 12 km deep · 72 km away
  22. 3.37 km SSW of Colusa, California · 15100 days ago · 21 km deep · 72 km away
  23. 2.26 km S of Colusa, California · 15100 days ago · 13 km deep · 70 km away
  24. 2.0Northern California · 15100 days ago · 6 km deep · 67 km away
  25. 2.46 km WSW of Meridian, California · 15100 days ago · 7 km deep · 70 km away
  26. 3.09 km W of Meridian, California · 15100 days ago · 23 km deep · 72 km away
  27. 2.00 km NE of Butte Meadows, California · 15099 days ago · 3 km deep · 80 km away
  28. 2.210 km ESE of Williams, California · 15099 days ago · 14 km deep · 74 km away
  29. 1.57 km E of Williams, California · 15099 days ago · 3 km deep · 74 km away
  30. 3.42 km SSW of Sattley, California · 15099 days ago · 3 km deep · 74 km away
  31. 2.03 km NE of East Quincy, California · 15096 days ago · 4 km deep · 71 km away
  32. 2.47 km SW of Colusa, California · 15096 days ago · 25 km deep · 73 km away
  33. 2.38 km SSW of Colusa, California · 15096 days ago · 28 km deep · 73 km away
  34. 1.78 km WSW of Lake Almanor West, California · 15094 days ago · 11 km deep · 91 km away
  35. 2.013 km NNW of Belden, California · 15093 days ago · 3 km deep · 80 km away
  36. 1.710 km NNW of Truckee, California · 15093 days ago · 10 km deep · 90 km away
  37. 1.710 km NNW of Truckee, California · 15093 days ago · 9 km deep · 90 km away
  38. 2.64 km W of Meridian, California · 15093 days ago · 6 km deep · 67 km away
  39. 2.19 km WSW of Meridian, California · 15090 days ago · 5 km deep · 72 km away
  40. 2.510 km ESE of Williams, California · 15090 days ago · 18 km deep · 74 km away
  41. 2.16 km E of Williams, California · 15090 days ago · 22 km deep · 75 km away
  42. 2.214 km NNE of Lake Davis, California · 15090 days ago · 11 km deep · 98 km away
  43. 2.5Northern California · 15090 days ago · 5 km deep · 96 km away
  44. 2.810 km NNE of Arbuckle, California · 15089 days ago · 9 km deep · 73 km away
  45. 3.69 km ESE of Williams, California · 15089 days ago · 13 km deep · 75 km away
  46. 2.39 km SSW of Colusa, California · 15089 days ago · 16 km deep · 73 km away
  47. 1.86 km SSW of Colusa, California · 15089 days ago · 5 km deep · 71 km away
  48. 3.5Northern California · 15089 days ago · 23 km deep · 73 km away
  49. 1.84 km SSW of Dunnigan, California · 15089 days ago · 5 km deep · 88 km away
  50. 2.28 km NNE of Arbuckle, California · 15089 days ago · 4 km deep · 73 km away
  51. 1.96 km W of Meridian, California · 15089 days ago · 5 km deep · 69 km away
  52. 1.67 km SSW of Colusa, California · 15088 days ago · 5 km deep · 73 km away
  53. 2.07 km WNW of Arbuckle, California · 15087 days ago · 4 km deep · 86 km away
  54. 2.44 km S of Oroville East, California · 15086 days ago · 2 km deep · 20 km away

Before

  1. 1.610 km NNW of Truckee, California · 15146 days ago · 9 km deep · 90 km away
  2. 1.59 km NNW of Truckee, California · 15146 days ago · 9 km deep · 90 km away
  3. 1.89 km NNW of Truckee, California · 15146 days ago · 9 km deep · 91 km away
  4. 2.411 km NW of Truckee, California · 15146 days ago · 19 km deep · 85 km away
  5. 2.04 km ENE of Tobin, California · 15148 days ago · 12 km deep · 61 km away
  6. 2.417 km WSW of Williams, California · 15148 days ago · 5 km deep · 98 km away
  7. 1.617 km W of Williams, California · 15149 days ago · 3 km deep · 99 km away
  8. 1.818 km W of Williams, California · 15151 days ago · 4 km deep · 100 km away
  9. 1.513 km N of Butte Meadows, California · 15156 days ago · 10 km deep · 94 km away
  10. 1.96 km NE of Crescent Mills, California · 15161 days ago · 3 km deep · 90 km away
  11. 2.43 km NNE of Guinda, California · 15162 days ago · -1 km deep · 99 km away
  12. 2.27 km W of La Porte, California · 15163 days ago · 7 km deep · 37 km away
  13. 1.97 km W of La Porte, California · 15165 days ago · 12 km deep · 35 km away
  14. 1.65 km W of La Porte, California · 15166 days ago · 12 km deep · 37 km away
  15. 1.68 km N of Truckee, California · 15166 days ago · 5 km deep · 94 km away
  16. 1.79 km N of Truckee, California · 15166 days ago · 9 km deep · 93 km away
  17. 2.19 km NW of Belden, California · 15168 days ago · 4 km deep · 73 km away
  18. 2.58 km WSW of La Porte, California · 15169 days ago · 14 km deep · 33 km away
  19. 1.98 km W of La Porte, California · 15169 days ago · 11 km deep · 35 km away
  20. 2.32 km WNW of La Porte, California · 15169 days ago · 12 km deep · 39 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc45484. Read Tue, Sep 22, 2026, 10:28 PM UTC.