QuakeIndex

Earthquake · reviewed by a seismologist

M 2.9ml

1 km SSE of Mammoth Lakes, California

· 5.2 km deep · released about 610 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Mono County 32 kmMariposa County 84 kmMadera County 84 kmTuolumne County 98 kmMineral County 109 kmFresno County 115 kmEsmeralda 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 2.9 (ml)
Depth
5.2 km below the surface
Felt
3 reports · strongest reported intensity III
Nearest
Mono County, 32 km NNE
Status
Reviewed by a seismologist

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

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 3 people have reported feeling it to USGS.

How big was it?

This earthquake released about 610 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 25,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 18,000× the energy of this one
  3. Around the size people start to feel M 3.0 1.6× the energy of this one
  4. This earthquake M 2.9 about 610 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 37.6347, -118.9610. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Mono County, CA 32 km (20 mi) SSW of here earthquakes near Mono County
Mariposa County, CA 84 km (52 mi) E of here earthquakes near Mariposa County
Madera County, CA 84 km (52 mi) NE of here earthquakes near Madera County
Tuolumne County, CA 98 km (61 mi) ESE of here earthquakes near Tuolumne County
Mineral County, NV 109 km (68 mi) SSW of here earthquakes near Mineral County
Fresno County, CA 115 km (71 mi) NNE of here earthquakes near Fresno 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. 1.6 1 km WSW of Swall Meadows, California
  2. 1.6 1 km W of Swall Meadows, California
  3. 1.5 2 km NNW of Benton, California
  4. 1.8 2 km ENE of Mesa, California
  5. 1.7 2 km ENE of Mesa, California
  6. 1.7 1 km ESE of Mesa, California
  7. 2.4 13 km SW of Aspen Springs, California
  8. 1.8 5 km NNE of Round Valley, California
  9. 1.9 18 km NW of Benton, California
  10. 1.5 11 km WSW of Aspen Springs, California
  11. 1.7 19 km SW of Aspen Springs, California
  12. 2.6 5 km E of Mesa, California
  13. 1.8 9 km ESE of Mammoth Lakes, California
  14. 2.0 Central California
  15. 1.8 13 km SW 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.