QuakeIndex

Earthquake · reviewed by a seismologist

M 3.1ml

10 km W of Aspen Springs, California

· 9.0 km deep · released about 1,200 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Mono County 40 kmMadera County 90 kmMariposa County 95 kmEsmeralda County 109 kmTuolumne County 112 kmMineral County 113 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 3.1 (ml)
Depth
9.0 km below the surface
Felt
11 reports · strongest reported intensity III
Nearest
Mono County, 40 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3009 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 11 people have reported feeling it to USGS.

How big was it?

This earthquake released about 1,200 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.1 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 280,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 12,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 8,800× the energy of this one
  4. This earthquake M 3.1 about 1,200 lb of TNT
  5. Around the size people start to feel M 3.0 this one released 1.3× more

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 37.5533, -118.8320. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Mono County, CA 40 km (25 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 95 km (59 mi) E of here earthquakes near Mariposa County
Esmeralda County, NV 109 km (67 mi) WSW of here earthquakes near Esmeralda County
Tuolumne County, CA 112 km (70 mi) ESE of here earthquakes near Tuolumne County
Mineral County, NV 113 km (70 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

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

  1. 1.6 24 km ESE of Yosemite Valley, California
  2. 2.6 22 km ESE of Yosemite Valley, California
  3. 2.0 23 km ESE of Yosemite Valley, California
  4. 1.9 23 km ESE of Yosemite Valley, California
  5. 2.1 4 km WNW of Wilkerson, California
  6. 1.6 4 km ESE of Mammoth Lakes, California
  7. 2.9 3 km ESE of Mammoth Lakes, California
  8. 1.8 13 km NE of Mesa, California
  9. 2.0 13 km WSW of Aspen Springs, California
  10. 2.0 13 km WSW of Aspen Springs, California
  11. 1.6 1 km NW of Mesa, California
  12. 1.6 6 km N of Benton, California
  13. 1.7 27 km WSW of Wilkerson, California
  14. 1.9 2 km ESE of Mammoth Lakes, California
  15. 2.8 28 km E of Fish Camp, 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.