QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

11 km SE of Markleeville, California

· 11 km deep · released about 15 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Alpine County 9 kmDouglas County 32 kmCarson City 59 kmLyon County 62 kmTuolumne County 71 kmEl Dorado County 75 kmAmador County 86 kmCalaveras County 89 kmStorey County 92 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 1.8 (ml)
Depth
11 km below the surface
Felt
no reports yet
Nearest
Alpine County, 9 km W
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.

How big was it?

This earthquake released about 15 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,000,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 710,000× the energy of this one
  3. Around the size people start to feel M 3.0 63× the energy of this one
  4. This earthquake M 1.8 about 15 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 38.6221, -119.6924. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Alpine County, CA 9 km (6 mi) E of here earthquakes near Alpine County
Douglas County, NV 32 km (20 mi) SSW of here earthquakes near Douglas County
Carson City, NV 59 km (37 mi) S of here earthquakes near Carson City
Lyon County, NV 62 km (38 mi) SW of here earthquakes near Lyon County
Tuolumne County, CA 71 km (44 mi) NNE of here earthquakes near Tuolumne County
El Dorado County, CA 75 km (47 mi) ESE of here earthquakes near El Dorado County

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

Aftershocks so far

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

  1. 2.3 7km SSW of Markleeville, CA
  2. 1.9 6 km SSW of Topaz Lake, Nevada
  3. 1.9 18km W of Bridgeport, CA
  4. 2.1 12km NNW of Bridgeport, CA
  5. 3.2 12km NNW of Bridgeport, CA
  6. 3.5 12km NNW of Bridgeport, CA
  7. 1.9 6 km E of Smith, Nevada
  8. 1.9 13km WNW of Bridgeport, CA
  9. 2.3 26km ENE of Dardanelle, CA
  10. 2.4 9km NE of Markleeville, CA
  11. 1.6 7 km SSW of Markleeville, California
  12. 2.1 24km SSW of Smith Valley, NV
  13. 1.5 California-Nevada border region
  14. 2.4 19km E of Markleeville, CA
  15. 2.5 8km NE 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.