QuakeIndex

Earthquake · reviewed by a seismologist

M 2.3md

8km ESE of Mammoth Lakes, CA

· 2.6 km deep · released about 77 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Mono County 35 kmMadera County 87 kmMariposa County 89 kmTuolumne County 104 kmMineral County 110 kmEsmeralda County 113 kmFresno County 115 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 2.3 (md)
Depth
2.6 km below the surface
Felt
no reports yet
Nearest
Mono County, 35 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2028 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 77 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.3 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 200,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 140,000× the energy of this one
  3. Around the size people start to feel M 3.0 12× the energy of this one
  4. This earthquake M 2.3 about 77 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 37.6045, -118.8998. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Mono County, CA 35 km (22 mi) S of here earthquakes near Mono County
Madera County, CA 87 km (54 mi) ENE of here earthquakes near Madera County
Mariposa County, CA 89 km (55 mi) E of here earthquakes near Mariposa County
Tuolumne County, CA 104 km (65 mi) ESE of here earthquakes near Tuolumne County
Mineral County, NV 110 km (68 mi) SSW of here earthquakes near Mineral County
Esmeralda County, NV 113 km (70 mi) W of here earthquakes near Esmeralda 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. 1.5 39km NNE of Toms Place, CA
  2. 1.6 22km ESE of Yosemite Valley, CA
  3. 1.5 21km ESE of Yosemite Valley, CA
  4. 1.5 22km ESE of Yosemite Valley, CA
  5. 1.9 24km ESE of Yosemite Valley, CA
  6. 2.8 13km W of Toms Place, CA
  7. 2.5 2km S of Round Valley, CA
  8. 1.6 13km SE of Mammoth Lakes, CA
  9. 1.8 13km SE of Mammoth Lakes, CA
  10. 2.0 11km SE of Mammoth Lakes, CA
  11. 1.8 14km ESE of Yosemite Valley, CA
  12. 1.9 18km SW of Toms Place, CA
  13. 1.6 21km SE of Yosemite Valley, CA
  14. 1.6 38km NNE of Toms Place, CA
  15. 2.1 41km NNE of Toms Place, 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.

For this area

The largest earthquake within 50 km in our catalogue was M 4.4 on 2020-02-01 — it released about 1,600 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.