QuakeIndex

Earthquake · reviewed by a seismologist

M 2.4md

20km ESE of Yosemite Valley, CA

· 4.1 km deep · released about 100 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Mariposa County 47 kmMono County 54 kmMadera County 58 kmTuolumne County 66 kmFresno County 101 kmAlpine County 115 kmCalaveras 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 2.4 (md)
Depth
4.1 km below the surface
Felt
4 reports · strongest reported intensity III
Nearest
Mariposa County, 47 km W
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2985 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 4 people have reported feeling it to USGS.

How big was it?

This earthquake released about 100 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.4 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 140,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 100,000× the energy of this one
  3. Around the size people start to feel M 3.0 9.1× the energy of this one
  4. This earthquake M 2.4 about 100 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 37.6427, -119.3858. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Mariposa County, CA 47 km (29 mi) E of here earthquakes near Mariposa County
Mono County, CA 54 km (34 mi) SW of here earthquakes near Mono County
Madera County, CA 58 km (36 mi) NNE of here earthquakes near Madera County
Tuolumne County, CA 66 km (41 mi) SE of here earthquakes near Tuolumne County
Fresno County, CA 101 km (63 mi) NNE of here earthquakes near Fresno County
Alpine County, CA 115 km (71 mi) SSE of here earthquakes near Alpine County

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

Aftershocks so far

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

  1. 2.3 13km SE of Mammoth Lakes, CA
  2. 1.6 12km ENE of Mammoth Lakes, CA
  3. 1.5 13km SE of Mammoth Lakes, CA
  4. 1.6 11km ENE of Mammoth Lakes, CA
  5. 1.7 14km SSE of Mammoth Lakes, CA
  6. 1.6 5km W of Mammoth Lakes, CA
  7. 1.6 25km ESE of Yosemite Valley, CA
  8. 2.7 4km ENE of Mammoth Lakes, CA
  9. 2.5 14km W of Toms Place, CA
  10. 1.8 4km NE of Mammoth Lakes, CA
  11. 1.7 22km S of Mammoth Lakes, CA
  12. 2.1 20km SE of Yosemite Valley, CA
  13. 1.8 14km SE of Mammoth Lakes, CA
  14. 2.3 3km E of Mammoth Lakes, CA
  15. 1.6 3km E of Mammoth Lakes, 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.