QuakeIndex

Earthquake · reviewed by a seismologist

M 2.3md

8 km SSE of Sierraville, California

· 8.3 km deep · released about 74 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Sierra County 19 kmNevada County 47 kmPlacer County 63 kmCarson City 64 kmPlumas County 68 kmStorey County 68 kmEl Dorado County 85 kmDouglas County 92 kmYuba County 93 km
Distance rings around the epicentre, with the nearest towns at their true direction and later quakes as coloured dots. Not a shaking map — see the USGS ShakeMap for that.
When
Magnitude
M 2.3 (md)
Depth
8.3 km below the surface
Felt
2 reports · strongest reported intensity III
Nearest
Sierra County, 19 km WNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3009 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 2 people have reported feeling it to USGS.

How big was it?

This earthquake released about 74 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.3 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 200,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 140,000× the energy of this one
  3. Around the size people start to feel M 3.0 13× the energy of this one
  4. This earthquake M 2.3 about 74 lb of TNT

Energy from the Gutenberg–Richter relation (log10E = 1.5M + 4.8), rounded to two figures; bar length is magnitude, which is already a logarithm of energy. Magnitudes of past earthquakes from the USGS catalogue.

Where

Epicentre 39.5270, -120.3133. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Sierra County, CA 19 km (12 mi) ESE of here earthquakes near Sierra County
Nevada County, CA 47 km (29 mi) ENE of here earthquakes near Nevada County
Placer County, CA 63 km (39 mi) NE of here earthquakes near Placer County
Carson City, NV 64 km (40 mi) NW of here earthquakes near Carson City
Plumas County, CA 68 km (42 mi) SE of here earthquakes near Plumas County
Storey County, NV 68 km (43 mi) W of here earthquakes near Storey County

Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.

Aftershocks so far

53 earthquakes have been recorded within 50 km since this one.

  1. 1.5 4 km ENE of Floriston, California
  2. 3.0 4 km E of Floriston, California
  3. 3.1 4 km ENE of Floriston, California
  4. 1.8 5km SSW of Cromberg, CA
  5. 1.8 10km NNE of Lake Davis, CA
  6. 1.6 4km WSW of Johnsville, CA
  7. 1.5 18km SSW of Whitehawk, CA
  8. 2.0 8 km N of Incline Village, Nevada
  9. 1.7 Nevada
  10. 2.1 5km NNE of Lake Davis, CA
  11. 1.9 5km NNE of Lake Davis, CA
  12. 2.0 9km NNW of Loyalton, CA
  13. 1.7 10 km NNE of Incline Village, Nevada
  14. 2.6 8 km SE of Floriston, California
  15. 2.1 12 km E of Chilcoot-Vinton, California

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of . QuakeIndex does not forecast aftershocks. When USGS issues an operational aftershock forecast it appears on the USGS event page.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.