California earthquakes

M2.5 earthquake 3 km S of Graeagle, California

A magnitude 2.5 earthquake struck 3 km S of Graeagle, California on Wed, Mar 6, 1985, 3:44 AM PST (11:44 UTC), 4 km (2 mi) below the surface.

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

Graeagle 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
2.5 (md), micro
Local time
UTC
1985-03-06 11:44:52 UTC
Depth
3.9 km (2.4 mi), shallow
Epicenter
39.734° N, 120.626° 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 0.6 km horizontally, 2.9 km in depth
Magnitude uncertainty
±0.18
Depth from
From location
Station coverage gap
199°, poorly surrounded by stations
Stations used
18

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 26 in the 60 days after this one and 8 in the 30 days before it.

After

  1. 2.21 km NNW of Plumas Eureka, California · 15176 days ago · 3 km deep · 8 km away
  2. 1.513 km NE of Butte Meadows, California · 15176 days ago · 2 km deep · 86 km away
  3. 1.69 km N of Truckee, California · 15175 days ago · 9 km deep · 51 km away
  4. 1.86 km ENE of Chico, California · 15173 days ago · 22 km deep · 97 km away
  5. 2.32 km WNW of La Porte, California · 15173 days ago · 12 km deep · 33 km away
  6. 1.98 km W of La Porte, California · 15173 days ago · 11 km deep · 40 km away
  7. 2.58 km WSW of La Porte, California · 15173 days ago · 14 km deep · 40 km away
  8. 2.19 km NW of Belden, California · 15172 days ago · 4 km deep · 70 km away
  9. 1.79 km N of Truckee, California · 15171 days ago · 9 km deep · 53 km away
  10. 1.68 km N of Truckee, California · 15170 days ago · 5 km deep · 54 km away
  11. 1.65 km W of La Porte, California · 15170 days ago · 12 km deep · 37 km away
  12. 1.97 km W of La Porte, California · 15170 days ago · 12 km deep · 38 km away
  13. 2.27 km W of La Porte, California · 15168 days ago · 7 km deep · 38 km away
  14. 1.96 km NE of Crescent Mills, California · 15165 days ago · 3 km deep · 50 km away
  15. 1.811 km WNW of Chester, California · 15163 days ago · 3 km deep · 93 km away
  16. 1.513 km N of Butte Meadows, California · 15160 days ago · 10 km deep · 95 km away
  17. 2.04 km ENE of Tobin, California · 15152 days ago · 12 km deep · 59 km away
  18. 2.411 km NW of Truckee, California · 15150 days ago · 19 km deep · 47 km away
  19. 1.89 km NNW of Truckee, California · 15150 days ago · 9 km deep · 51 km away
  20. 1.59 km NNW of Truckee, California · 15150 days ago · 9 km deep · 50 km away
  21. 1.610 km NNW of Truckee, California · 15150 days ago · 9 km deep · 50 km away
  22. 1.85 km WNW of Dobbins, California · 15150 days ago · 19 km deep · 66 km away
  23. 2.110 km NNW of Truckee, California · 15149 days ago · 9 km deep · 50 km away
  24. 1.610 km N of Truckee, California · 15149 days ago · 8 km deep · 50 km away
  25. 1.80 km NNW of Prattville, California · 15144 days ago · 3 km deep · 70 km away
  26. 2.710 km N of Truckee, California · 15120 days ago · 7 km deep · 51 km away

Before

  1. 2.53 km N of Plumas Eureka, California · 15180 days ago · -1 km deep · 10 km away
  2. 2.015 km SW of Lake Almanor West, California · 15190 days ago · 8 km deep · 75 km away
  3. 1.87 km NNE of Truckee, California · 15197 days ago · 6 km deep · 55 km away
  4. 1.72 km N of Lake Almanor West, California · 15200 days ago · 6 km deep · 76 km away
  5. 1.83 km NNW of Lake Almanor West, California · 15203 days ago · 3 km deep · 78 km away
  6. 1.64 km ESE of Palermo, California · 15207 days ago · 9 km deep · 82 km away
  7. 1.512 km W of Chester, California · 15207 days ago · 3 km deep · 89 km away
  8. 1.63 km ENE of Loma Rica, California · 15208 days ago · 1 km deep · 79 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc42972. Read Sun, Sep 27, 2026, 2:42 AM UTC.