QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8md

8 km SSW of Mammoth Lakes, California

· 0.1 km deep · released about 15 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Mono County 39 kmMadera County 77 kmMariposa County 79 kmTuolumne County 97 kmFresno County 108 kmMineral County 116 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 1.8 (md)
Depth
0.1 km below the surface
Felt
no reports yet
Nearest
Mono County, 39 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3516 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 15 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,000,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 710,000× the energy of this one
  3. Around the size people start to feel M 3.0 63× the energy of this one
  4. This earthquake M 1.8 about 15 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 37.5838, -119.0135. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Mono County, CA 39 km (24 mi) SSW of here earthquakes near Mono County
Madera County, CA 77 km (48 mi) ENE of here earthquakes near Madera County
Mariposa County, CA 79 km (49 mi) E of here earthquakes near Mariposa County
Tuolumne County, CA 97 km (60 mi) ESE of here earthquakes near Tuolumne County
Fresno County, CA 108 km (67 mi) NNE of here earthquakes near Fresno County
Mineral County, NV 116 km (72 mi) SSW of here earthquakes near Mineral County

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

Aftershocks so far

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

  1. 1.5 29 km E of Fish Camp, California
  2. 1.8 14 km WSW of Aspen Springs, California
  3. 2.3 10 km WSW of Aspen Springs, California
  4. 1.9 4 km NNW of Round Valley, California
  5. 1.6 12 km SW of Aspen Springs, California
  6. 2.2 18 km SE of Yosemite Valley, California
  7. 1.6 4 km NNW of Round Valley, California
  8. 1.8 7 km E of Mammoth Lakes, California
  9. 1.5 1 km W of Mesa, California
  10. 1.6 1 km SW of Mesa, California
  11. 1.9 19 km SE of Yosemite Valley, California
  12. 1.6 18 km SE of Yosemite Valley, California
  13. 1.5 12 km SW of Aspen Springs, California
  14. 1.5 8 km E of Mammoth Lakes, California
  15. 1.6 7 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.