California earthquakes

M2.2 earthquake 1 km NNW of Plumas Eureka, California

A magnitude 2.2 earthquake struck 1 km NNW of Plumas Eureka, California on Sat, Mar 9, 1985, 8:48 AM PST (16:48 UTC), 3 km (2 mi) below the surface.

A larger quake followed: M2.7 10 km N of Truckee, California. This one was a foreshock.

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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), micro
Local time
UTC
1985-03-09 16:48:21 UTC
Depth
3.4 km (2.1 mi), shallow
Epicenter
39.806° N, 120.656° 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 0.4 km horizontally, 8.1 km in depth
Magnitude uncertainty
±0.09
Depth from
From location
Station coverage gap
155°
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: 25 in the 60 days after this one and 11 in the 30 days before it.

After

  1. 1.513 km NE of Butte Meadows, California · 15178 days ago · 2 km deep · 80 km away
  2. 1.69 km N of Truckee, California · 15177 days ago · 9 km deep · 59 km away
  3. 1.86 km ENE of Chico, California · 15174 days ago · 22 km deep · 95 km away
  4. 2.32 km WNW of La Porte, California · 15174 days ago · 12 km deep · 33 km away
  5. 1.98 km W of La Porte, California · 15174 days ago · 11 km deep · 40 km away
  6. 2.58 km WSW of La Porte, California · 15174 days ago · 14 km deep · 40 km away
  7. 2.19 km NW of Belden, California · 15174 days ago · 4 km deep · 64 km away
  8. 1.79 km N of Truckee, California · 15172 days ago · 9 km deep · 60 km away
  9. 1.68 km N of Truckee, California · 15172 days ago · 5 km deep · 61 km away
  10. 1.65 km W of La Porte, California · 15172 days ago · 12 km deep · 36 km away
  11. 1.97 km W of La Porte, California · 15171 days ago · 12 km deep · 38 km away
  12. 2.27 km W of La Porte, California · 15169 days ago · 7 km deep · 38 km away
  13. 1.96 km NE of Crescent Mills, California · 15166 days ago · 3 km deep · 41 km away
  14. 1.811 km WNW of Chester, California · 15165 days ago · 3 km deep · 85 km away
  15. 1.513 km N of Butte Meadows, California · 15161 days ago · 10 km deep · 89 km away
  16. 2.04 km ENE of Tobin, California · 15154 days ago · 12 km deep · 53 km away
  17. 2.411 km NW of Truckee, California · 15152 days ago · 19 km deep · 55 km away
  18. 1.89 km NNW of Truckee, California · 15152 days ago · 9 km deep · 58 km away
  19. 1.59 km NNW of Truckee, California · 15152 days ago · 9 km deep · 58 km away
  20. 1.610 km NNW of Truckee, California · 15152 days ago · 9 km deep · 58 km away
  21. 1.85 km WNW of Dobbins, California · 15151 days ago · 19 km deep · 69 km away
  22. 2.110 km NNW of Truckee, California · 15151 days ago · 9 km deep · 58 km away
  23. 1.610 km N of Truckee, California · 15150 days ago · 8 km deep · 58 km away
  24. 1.80 km NNW of Prattville, California · 15145 days ago · 3 km deep · 62 km away
  25. 2.710 km N of Truckee, California · 15122 days ago · 7 km deep · 58 km away

Before

  1. 2.53 km S of Graeagle, California · 15181 days ago · 4 km deep · 8 km away
  2. 2.53 km N of Plumas Eureka, California · 15182 days ago · -1 km deep · 2 km away
  3. 2.015 km SW of Lake Almanor West, California · 15191 days ago · 8 km deep · 68 km away
  4. 1.817 km ENE of Mineral, California · 15198 days ago · 7 km deep · 95 km away
  5. 2.316 km ENE of Mineral, California · 15198 days ago · 3 km deep · 94 km away
  6. 1.617 km ENE of Mineral, California · 15198 days ago · 8 km deep · 95 km away
  7. 2.317 km ENE of Mineral, California · 15198 days ago · 6 km deep · 94 km away
  8. 1.816 km ENE of Mineral, California · 15198 days ago · 6 km deep · 94 km away
  9. 1.87 km NNE of Truckee, California · 15198 days ago · 6 km deep · 63 km away
  10. 1.72 km N of Lake Almanor West, California · 15202 days ago · 6 km deep · 69 km away
  11. 1.83 km NNW of Lake Almanor West, California · 15204 days ago · 3 km deep · 70 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc43345. Read Mon, Sep 28, 2026, 10:46 AM UTC.