QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1md

32km SE of Markleeville, CA

· 5.0 km deep · released about 37 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Alpine County 28 kmDouglas County 45 kmLyon County 64 kmTuolumne County 67 kmCarson City 75 kmMono County 86 kmEl Dorado County 94 kmMineral County 96 kmCalaveras County 97 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
5.0 km below the surface
Felt
no reports yet
Nearest
Alpine County, 28 km WNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2343 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 37 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 5.8 410,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 290,000× the energy of this one
  3. Around the size people start to feel M 3.0 26× the energy of this one
  4. This earthquake M 2.1 about 37 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 38.5055, -119.5163. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Alpine County, CA 28 km (17 mi) ESE of here earthquakes near Alpine County
Douglas County, NV 45 km (28 mi) S of here earthquakes near Douglas County
Lyon County, NV 64 km (40 mi) SSW of here earthquakes near Lyon County
Tuolumne County, CA 67 km (41 mi) NE of here earthquakes near Tuolumne County
Carson City, NV 75 km (46 mi) SSE of here earthquakes near Carson City
Mono County, CA 86 km (54 mi) NW of here earthquakes near Mono County

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

Aftershocks so far

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

  1. 3.0 32km ENE of Dardanelle, CA
  2. 2.0 9 km ENE of Coleville, California
  3. 2.6 33km ENE of Dardanelle, CA
  4. 3.0 31km SE of Markleeville, CA
  5. 2.6 31km SE of Markleeville, CA
  6. 3.4 31km SE of Markleeville, CA
  7. 3.4 29km ENE of Dardanelle, CA
  8. 2.5 30km SE of Markleeville, CA
  9. 2.8 30km ENE of Dardanelle, CA
  10. 3.1 31km ENE of Dardanelle, CA
  11. 3.0 29km ENE of Dardanelle, CA
  12. 3.3 32km ENE of Dardanelle, CA
  13. 2.8 31km SE of Markleeville, CA
  14. 3.7 31km SE of Markleeville, CA
  15. 4.3 32km SE of Markleeville, CA

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.