QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1md

19km W of Truckee, CA

· 2.9 km deep · released about 38 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Sierra County 28 kmNevada County 32 kmPlacer County 42 kmCarson City 60 kmEl Dorado County 63 kmStorey County 76 kmPlumas County 81 kmYuba County 82 kmDouglas County 84 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 2.1 (md)
Depth
2.9 km below the surface
Felt
no reports yet
Nearest
Sierra County, 28 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2543 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

How big was it?

This earthquake released about 38 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.1 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 390,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 280,000× the energy of this one
  3. Around the size people start to feel M 3.0 25× the energy of this one
  4. This earthquake M 2.1 about 38 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 39.3412, -120.3992. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Sierra County, CA 28 km (18 mi) SSE of here earthquakes near Sierra County
Nevada County, CA 32 km (20 mi) E of here earthquakes near Nevada County
Placer County, CA 42 km (26 mi) NE of here earthquakes near Placer County
Carson City, NV 60 km (37 mi) WNW of here earthquakes near Carson City
El Dorado County, CA 63 km (39 mi) N of here earthquakes near El Dorado County
Storey County, NV 76 km (47 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

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

  1. 1.5 7 km NNW of Verdi, California
  2. 1.5 7 km NNW of Verdi, California
  3. 3.0 9km S of Truckee, CA
  4. 1.7 8 km WNW of Carson City, Nevada
  5. 1.5 5 km SSW of Sattley, California
  6. 2.3 7km NW of Verdi-Mogul, NV
  7. 1.9 20km SW of Whitehawk, CA
  8. 2.2 15km NNW of Incline Village-Crystal Bay, NV
  9. 1.5 Northern California
  10. 1.5 7 km N of Incline Village, Nevada
  11. 2.0 10 km SSW of Kingvale, California
  12. 1.8 8 km E of Floriston, California
  13. 2.1 8 km E of Floriston, California
  14. 1.7 8 km E of Floriston, California
  15. 1.8 8 km E of Floriston, 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.