California earthquakes

M2.8 earthquake 10 km E of Red Bluff, California

A magnitude 2.8 earthquake struck 10 km E of Red Bluff, California on Mon, Apr 15, 1985, 2:55 PM PST (22:55 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M2.9 13 km NE of Proberta, California. This one was a foreshock.

Red Bluff 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
2.8 (md), micro
Local time
UTC
1985-04-15 22:55:58 UTC
Depth
9.5 km (5.9 mi), shallow
Epicenter
40.169° N, 122.113° 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, 0.4 km in depth
Magnitude uncertainty
±0.11
Depth from
From location
Station coverage gap
165°
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: 30 in the 60 days after this one and 18 in the 30 days before it.

After

  1. 1.812 km E of Red Bluff, California · 15135 days ago · 1 km deep · 2 km away
  2. 2.913 km NE of Proberta, California · 15134 days ago · -1 km deep · 3 km away
  3. 2.312 km ESE of Bend, California · 15134 days ago · 17 km deep · 8 km away
  4. 2.010 km E of Red Bluff, California · 15134 days ago · 4 km deep · 0 km away
  5. 2.17 km NNW of Richvale, California · 15133 days ago · 5 km deep · 74 km away
  6. 1.710 km ESE of Covelo, California · 15130 days ago · 1 km deep · 98 km away
  7. 1.710 km E of Red Bluff, California · 15117 days ago · 3 km deep · 2 km away
  8. 2.231 km WSW of Paskenta, California · 15116 days ago · 9 km deep · 79 km away
  9. 1.912 km ENE of Bend, California · 15115 days ago · 7 km deep · 16 km away
  10. 2.31 km SW of Lake Almanor West, California · 15110 days ago · 3 km deep · 76 km away
  11. 2.412 km ENE of Shingletown, California · 15108 days ago · 35 km deep · 50 km away
  12. 1.78 km WSW of Red Bluff, California · 15106 days ago · 17 km deep · 18 km away
  13. 2.613 km ESE of Mineral, California · 15106 days ago · 8 km deep · 59 km away
  14. 1.811 km WNW of Lakehead, California · 15105 days ago · 4 km deep · 92 km away
  15. 1.716 km NE of Mineral, California · 15102 days ago · 4 km deep · 63 km away
  16. 1.514 km S of Hamilton City, California · 15102 days ago · 5 km deep · 63 km away
  17. 2.00 km NE of Butte Meadows, California · 15099 days ago · 3 km deep · 49 km away
  18. 1.78 km WSW of Lake Almanor West, California · 15093 days ago · 11 km deep · 69 km away
  19. 2.013 km NNW of Belden, California · 15093 days ago · 3 km deep · 67 km away
  20. 1.73 km WNW of Chester, California · 15090 days ago · -1 km deep · 73 km away
  21. 1.814 km NNE of Mineral, California · 15087 days ago · 3 km deep · 60 km away
  22. 1.930 km NE of Covelo, California · 15087 days ago · 3 km deep · 78 km away
  23. 2.624 km WNW of Paskenta, California · 15087 days ago · -1 km deep · 65 km away
  24. 2.44 km S of Oroville East, California · 15086 days ago · 2 km deep · 95 km away
  25. 1.915 km E of Cottonwood, California · 15081 days ago · 11 km deep · 25 km away
  26. 2.56 km N of Millville, California · 15079 days ago · 23 km deep · 49 km away
  27. 2.310 km NE of Vina, California · 15077 days ago · -1 km deep · 23 km away
  28. 1.73 km NNW of Hamilton City, California · 15076 days ago · 10 km deep · 45 km away
  29. 1.85 km E of Redding, California · 15075 days ago · 19 km deep · 49 km away
  30. 1.614 km NNW of Chester, California · 15075 days ago · 6 km deep · 77 km away

Before

  1. 2.07 km NE of Covelo, California · 15136 days ago · 5 km deep · 98 km away
  2. 1.614 km NE of Proberta, California · 15138 days ago · 0 km deep · 6 km away
  3. 2.111 km E of Red Bluff, California · 15139 days ago · 14 km deep · 2 km away
  4. 1.80 km NNW of Prattville, California · 15139 days ago · 3 km deep · 81 km away
  5. 2.516 km NNE of Elk Creek, California · 15140 days ago · 0 km deep · 56 km away
  6. 2.27 km NNE of Elk Creek, California · 15145 days ago · 12 km deep · 66 km away
  7. 3.01 km ESE of Anderson, California · 15147 days ago · 68 km deep · 33 km away
  8. 2.04 km ENE of Tobin, California · 15148 days ago · 12 km deep · 77 km away
  9. 2.313 km NNE of Mineral, California · 15149 days ago · 2 km deep · 58 km away
  10. 2.914 km E of Cottonwood, California · 15150 days ago · 11 km deep · 23 km away
  11. 2.313 km NNE of Mineral, California · 15151 days ago · 2 km deep · 58 km away
  12. 2.2Northern California · 15152 days ago · 5 km deep · 10 km away
  13. 1.621 km S of Ruth, California · 15154 days ago · 6 km deep · 100 km away
  14. 1.513 km N of Butte Meadows, California · 15156 days ago · 10 km deep · 47 km away
  15. 1.811 km WNW of Chester, California · 15159 days ago · 3 km deep · 69 km away
  16. 1.924 km W of Paskenta, California · 15159 days ago · -1 km deep · 66 km away
  17. 1.79 km NNE of Mineral, California · 15159 days ago · 5 km deep · 55 km away
  18. 1.68 km ESE of Hat Creek, California · 15160 days ago · 3 km deep · 90 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc46203. Read Tue, Sep 22, 2026, 5:16 PM UTC.