QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1md

8 km ESE of Mammoth Lakes, California

· 7.4 km deep · released about 38 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Mono County 32 kmMadera County 90 kmMariposa County 91 kmTuolumne County 105 kmMineral County 107 kmEsmeralda County 111 kmFresno County 118 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
7.4 km below the surface
Felt
1 report · strongest reported intensity II
Nearest
Mono County, 32 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3513 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 1 person has reported feeling it to USGS.

How big was it?

This earthquake released about 38 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 5.8 390,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 280,000× the energy of this one
  3. Around the size people start to feel M 3.0 25× the energy of this one
  4. This earthquake M 2.1 about 38 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 37.6248, -118.8770. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Mono County, CA 32 km (20 mi) S of here earthquakes near Mono County
Madera County, CA 90 km (56 mi) ENE of here earthquakes near Madera County
Mariposa County, CA 91 km (57 mi) E of here earthquakes near Mariposa County
Tuolumne County, CA 105 km (65 mi) ESE of here earthquakes near Tuolumne County
Mineral County, NV 107 km (67 mi) SSW of here earthquakes near Mineral County
Esmeralda County, NV 111 km (69 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

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

  1. 1.9 10 km ESE of Mammoth Lakes, California
  2. 2.9 10 km ESE of Mammoth Lakes, California
  3. 1.8 29 km NE of Bass Lake, California
  4. 2.6 7 km N of Benton, California
  5. 1.6 2 km ESE of Mammoth Lakes, California
  6. 1.6 13km WNW of Toms Place, CA
  7. 1.8 4 km W of Aspen Springs, California
  8. 1.5 California-Nevada border region
  9. 1.7 19 km SW of Aspen Springs, California
  10. 1.7 19 km SW of Aspen Springs, California
  11. 1.5 7 km N of Benton, California
  12. 1.6 California-Nevada border region
  13. 1.5 9 km NNE of Benton, California
  14. 1.5 8 km E of Swall Meadows, California
  15. 2.2 7 km NW of Aspen Springs, California

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.