California earthquakes

M2.0 earthquake 4 km ENE of Tobin, California

A magnitude 2.0 earthquake struck 4 km ENE of Tobin, California on Tue, Apr 2, 1985, 8:26 AM PST (16:26 UTC), 12 km (8 mi) below the surface.

A larger quake followed: M2.1 11 km E of Red Bluff, 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.

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The earthquake

Magnitude
2.0 (md), micro
Local time
UTC
1985-04-02 16:26:40 UTC
Depth
12.2 km (7.6 mi), shallow
Epicenter
39.947° N, 121.255° 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 1.1 km horizontally, 4.5 km in depth
Magnitude uncertainty
±0.08
Depth from
From location
Station coverage gap
287°, poorly surrounded by stations
Stations used
7

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 27 in the 60 days after this one and 21 in the 30 days before it.

After

  1. 1.85 km WNW of Dobbins, California · 15147 days ago · 19 km deep · 61 km away
  2. 1.80 km NNW of Prattville, California · 15141 days ago · 3 km deep · 31 km away
  3. 2.111 km E of Red Bluff, California · 15141 days ago · 14 km deep · 77 km away
  4. 1.614 km NE of Proberta, California · 15140 days ago · 0 km deep · 71 km away
  5. 2.810 km E of Red Bluff, California · 15136 days ago · 10 km deep · 77 km away
  6. 1.812 km E of Red Bluff, California · 15136 days ago · 1 km deep · 76 km away
  7. 2.913 km NE of Proberta, California · 15136 days ago · -1 km deep · 75 km away
  8. 2.312 km ESE of Bend, California · 15136 days ago · 17 km deep · 76 km away
  9. 2.010 km E of Red Bluff, California · 15136 days ago · 4 km deep · 77 km away
  10. 2.17 km NNW of Richvale, California · 15135 days ago · 5 km deep · 63 km away
  11. 1.710 km E of Red Bluff, California · 15119 days ago · 3 km deep · 78 km away
  12. 1.912 km ENE of Bend, California · 15117 days ago · 7 km deep · 81 km away
  13. 2.31 km SW of Lake Almanor West, California · 15112 days ago · 3 km deep · 31 km away
  14. 2.412 km ENE of Shingletown, California · 15110 days ago · 35 km deep · 76 km away
  15. 1.78 km WSW of Red Bluff, California · 15108 days ago · 17 km deep · 94 km away
  16. 2.613 km ESE of Mineral, California · 15108 days ago · 8 km deep · 44 km away
  17. 1.716 km NE of Mineral, California · 15104 days ago · 4 km deep · 60 km away
  18. 1.514 km S of Hamilton City, California · 15103 days ago · 5 km deep · 73 km away
  19. 2.00 km NE of Butte Meadows, California · 15101 days ago · 3 km deep · 29 km away
  20. 3.42 km SSW of Sattley, California · 15100 days ago · 3 km deep · 80 km away
  21. 2.03 km NE of East Quincy, California · 15097 days ago · 4 km deep · 33 km away
  22. 1.912 km E of Westwood, California · 15097 days ago · 3 km deep · 50 km away
  23. 1.78 km WSW of Lake Almanor West, California · 15095 days ago · 11 km deep · 30 km away
  24. 2.013 km NNW of Belden, California · 15095 days ago · 3 km deep · 20 km away
  25. 1.73 km WNW of Chester, California · 15092 days ago · -1 km deep · 41 km away
  26. 2.214 km NNE of Lake Davis, California · 15091 days ago · 11 km deep · 71 km away
  27. 2.5Northern California · 15091 days ago · 5 km deep · 69 km away

Before

  1. 2.313 km NNE of Mineral, California · 15150 days ago · 2 km deep · 63 km away
  2. 2.914 km E of Cottonwood, California · 15152 days ago · 11 km deep · 87 km away
  3. 2.313 km NNE of Mineral, California · 15153 days ago · 2 km deep · 63 km away
  4. 2.2Northern California · 15153 days ago · 5 km deep · 72 km away
  5. 1.513 km N of Butte Meadows, California · 15157 days ago · 10 km deep · 39 km away
  6. 1.811 km WNW of Chester, California · 15161 days ago · 3 km deep · 47 km away
  7. 1.79 km NNE of Mineral, California · 15161 days ago · 5 km deep · 59 km away
  8. 1.68 km ESE of Hat Creek, California · 15161 days ago · 3 km deep · 95 km away
  9. 1.96 km NE of Crescent Mills, California · 15162 days ago · 3 km deep · 40 km away
  10. 2.27 km W of La Porte, California · 15165 days ago · 7 km deep · 33 km away
  11. 1.97 km W of La Porte, California · 15167 days ago · 12 km deep · 34 km away
  12. 1.65 km W of La Porte, California · 15168 days ago · 12 km deep · 34 km away
  13. 2.19 km NW of Belden, California · 15170 days ago · 4 km deep · 14 km away
  14. 2.58 km WSW of La Porte, California · 15170 days ago · 14 km deep · 35 km away
  15. 1.98 km W of La Porte, California · 15170 days ago · 11 km deep · 33 km away
  16. 2.32 km WNW of La Porte, California · 15170 days ago · 12 km deep · 35 km away
  17. 1.86 km ENE of Chico, California · 15170 days ago · 22 km deep · 49 km away
  18. 1.513 km NE of Butte Meadows, California · 15174 days ago · 2 km deep · 31 km away
  19. 2.21 km NNW of Plumas Eureka, California · 15174 days ago · 3 km deep · 53 km away
  20. 2.53 km S of Graeagle, California · 15177 days ago · 4 km deep · 59 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc46149. Read Thu, Sep 24, 2026, 9:58 AM UTC.