QuakeIndex

Earthquake · reviewed by a seismologist

M 2.0md

22km WNW of Truckee, CA

· 8.2 km deep · released about 33 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Sierra County 22 kmNevada County 32 kmPlacer County 45 kmCarson City 64 kmEl Dorado County 68 kmPlumas County 75 kmStorey County 77 kmYuba County 80 kmDouglas County 89 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 2.0 (md)
Depth
8.2 km below the surface
Felt
no reports yet
Nearest
Sierra County, 22 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1252 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 33 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.0 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 450,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 320,000× the energy of this one
  3. Around the size people start to feel M 3.0 29× the energy of this one
  4. This earthquake M 2.0 about 33 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 39.3905, -120.4233. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Sierra County, CA 22 km (14 mi) SSE of here earthquakes near Sierra County
Nevada County, CA 32 km (20 mi) ENE of here earthquakes near Nevada County
Placer County, CA 45 km (28 mi) NE of here earthquakes near Placer County
Carson City, NV 64 km (40 mi) WNW of here earthquakes near Carson City
El Dorado County, CA 68 km (42 mi) N of here earthquakes near El Dorado County
Plumas County, CA 75 km (47 mi) SSE of here earthquakes near Plumas County

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

Aftershocks so far

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

  1. 2.1 23 km W of Sunnyside-Tahoe City, CA
  2. 2.2 24 km W of Sunnyside-Tahoe City, CA
  3. 2.1 24 km W of Sunnyside-Tahoe City, CA
  4. 1.6 7 km S of Cold Springs, Nevada
  5. 2.0 Nevada
  6. 2.6 5 km SSE of Floriston, California
  7. 2.5 13 km SSW of Loyalton, CA
  8. 2.1 9 km NNE of Truckee, CA
  9. 1.9 6 km S of Cold Springs, Nevada
  10. 2.1 7 km S of Cold Springs, Nevada
  11. 2.3 7 km S of Cold Springs, Nevada
  12. 1.6 Nevada
  13. 1.8 6 km SSE of Cold Springs, Nevada
  14. 1.9 7 km S of Cold Springs, Nevada
  15. 2.5 6 km S of Cold Springs, Nevada

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.

For this area

The largest earthquake within 50 km in our catalogue was M 4.7 on 2021-05-07 — it released about 8,500 times the energy of this one.

From the QuakeIndex catalogue, built from the USGS FDSN event service.

On USGS

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