QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1md

11 km SE of Mammoth Lakes, California

· 3.9 km deep · released about 49 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Mono County 37 kmMadera County 87 kmMariposa County 91 kmTuolumne County 107 kmMineral County 112 kmEsmeralda County 112 kmFresno County 114 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
3.9 km below the surface
Felt
2 reports · strongest reported intensity II
Nearest
Mono County, 37 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1517 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 2 people have reported feeling it to USGS.

How big was it?

This earthquake released about 49 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 5.8 310,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 220,000× the energy of this one
  3. Around the size people start to feel M 3.0 19× the energy of this one
  4. This earthquake M 2.1 about 49 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 37.5790, -118.8797. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Mono County, CA 37 km (23 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 91 km (57 mi) E of here earthquakes near Mariposa County
Tuolumne County, CA 107 km (67 mi) ESE of here earthquakes near Tuolumne County
Mineral County, NV 112 km (70 mi) SSW of here earthquakes near Mineral County
Esmeralda County, NV 112 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

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

  1. 2.3 California-Nevada border region
  2. 1.8 14 km SW of Aspen Springs, California
  3. 1.6 5 km E of Mesa, California
  4. 1.7 15 km SW of Aspen Springs, California
  5. 2.4 13 km SW of Aspen Springs, California
  6. 1.9 12 km SW of Aspen Springs, California
  7. 1.7 13 km SW of Aspen Springs, California
  8. 1.5 18 km NW of Benton, California
  9. 2.1 17 km SE of Yosemite Valley, California
  10. 1.6 13 km SW of Aspen Springs, California
  11. 2.1 21 km ENE of Bass Lake, California
  12. 1.9 8 km NW of Aspen Springs, California
  13. 1.7 15 km SW of Aspen Springs, California
  14. 1.8 8 km E of Mammoth Lakes, California
  15. 2.1 8 km ESE of Mammoth Lakes, 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.