QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9md

27km SSW of Mammoth Lakes, CA

· 15 km deep · released about 18 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Mono County 59 kmMadera County 65 kmMariposa County 77 kmFresno County 89 kmTuolumne County 105 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 1.9 (md)
Depth
15 km below the surface
Felt
no reports yet
Nearest
Mono County, 59 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2865 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 18 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 840,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 600,000× the energy of this one
  3. Around the size people start to feel M 3.0 53× the energy of this one
  4. This earthquake M 1.9 about 18 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 37.4065, -119.0592. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Mono County, CA 59 km (37 mi) SSW of here earthquakes near Mono County
Madera County, CA 65 km (40 mi) ENE of here earthquakes near Madera County
Mariposa County, CA 77 km (48 mi) ESE of here earthquakes near Mariposa County
Fresno County, CA 89 km (55 mi) NE of here earthquakes near Fresno County
Tuolumne County, CA 105 km (65 mi) SE of here earthquakes near Tuolumne County

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

Aftershocks so far

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

  1. 1.8 14km NW of Toms Place, CA
  2. 1.6 14km NW of Toms Place, CA
  3. 2.1 14km NW of Toms Place, CA
  4. 1.6 14km NW of Toms Place, CA
  5. 1.6 14km NW of Toms Place, CA
  6. 1.7 14km NW of Toms Place, CA
  7. 2.9 15km W of Round Valley, CA
  8. 1.7 14km W of Round Valley, CA
  9. 1.6 16km WSW of Round Valley, CA
  10. 1.9 15km S of Mammoth Lakes, CA
  11. 1.8 14km SE of Mammoth Lakes, CA
  12. 2.6 2km SSE of Mammoth Lakes, CA
  13. 3.0 2km S of Mammoth Lakes, CA
  14. 2.2 15km SE of Mammoth Lakes, CA
  15. 1.5 15km SE 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.