QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1md

16 km ENE of Yosemite Valley, CA

· 18 km deep · released about 40 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Mono County 48 kmMariposa County 51 kmTuolumne County 57 kmMadera County 70 kmAlpine County 101 kmCalaveras County 112 kmFresno County 115 kmMineral County 119 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
18 km below the surface
Felt
no reports yet
Nearest
Mono County, 48 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1035 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 40 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 5.8 380,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 270,000× the energy of this one
  3. Around the size people start to feel M 3.0 24× the energy of this one
  4. This earthquake M 2.1 about 40 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 37.7742, -119.3963. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Mono County, CA 48 km (30 mi) WSW of here earthquakes near Mono County
Mariposa County, CA 51 km (31 mi) ENE of here earthquakes near Mariposa County
Tuolumne County, CA 57 km (35 mi) ESE of here earthquakes near Tuolumne County
Madera County, CA 70 km (44 mi) NNE of here earthquakes near Madera County
Alpine County, CA 101 km (63 mi) SSE of here earthquakes near Alpine County
Calaveras County, CA 112 km (69 mi) ESE of here earthquakes near Calaveras County

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

Aftershocks so far

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

  1. 1.8 10 km ESE of Mammoth Lakes, CA
  2. 2.0 23 km SE of Yosemite Valley, CA
  3. 2.1 27 km SSW of Mammoth Lakes, CA
  4. 2.2 28 km ENE of Oakhurst, CA
  5. 1.7 21 km SSE of Yosemite Valley, CA
  6. 1.7 6 km E of Mammoth Lakes, CA
  7. 1.9 26 km SSW of Mammoth Lakes, CA
  8. 1.7 27 km ENE of Oakhurst, CA
  9. 2.1 28 km ENE of Oakhurst, CA
  10. 1.5 17 km SE of Yosemite Valley, CA
  11. 1.8 23 km SE of Yosemite Valley, CA
  12. 1.8 8 km W of Mammoth Lakes, CA
  13. 1.8 8 km W of Mammoth Lakes, CA
  14. 1.6 21 km ESE of Yosemite Valley, CA
  15. 1.5 22 km ESE of Yosemite Valley, 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.