QuakeIndex

Earthquake · reviewed by a seismologist

M 3.1ml

9 km SW of Aspen Springs, California

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

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Mono County 49 kmMadera County 91 kmMariposa County 100 kmEsmeralda County 106 kmFresno County 112 kmMineral County 119 kmTuolumne County 120 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
5.4 km below the surface
Felt
no reports yet
Nearest
Mono County, 49 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.

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 37.4837, -118.7822. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Mono County, CA 49 km (30 mi) S of here earthquakes near Mono County
Madera County, CA 91 km (56 mi) ENE of here earthquakes near Madera County
Mariposa County, CA 100 km (62 mi) E of here earthquakes near Mariposa County
Esmeralda County, NV 106 km (66 mi) WSW of here earthquakes near Esmeralda County
Fresno County, CA 112 km (69 mi) NE of here earthquakes near Fresno County
Mineral County, NV 119 km (74 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. 2.2 12 km SE of Mammoth Lakes, California
  2. 1.6 14 km SW of Aspen Springs, California
  3. 1.7 6 km NE of Wilkerson, California
  4. 2.1 12 km SE of Mammoth Lakes, California
  5. 3.1 10 km W of Aspen Springs, California
  6. 1.5 1 km SW of Round Valley, California
  7. 1.6 13 km WSW of Aspen Springs, California
  8. 1.7 5 km ESE of Mammoth Lakes, California
  9. 1.6 12 km SE of Mammoth Lakes, California
  10. 1.9 11 km SE of Mammoth Lakes, California
  11. 1.9 7 km SSE of Mammoth Lakes, California
  12. 1.5 10 km ENE of Mammoth Lakes, California
  13. 1.9 8 km ESE of Mammoth Lakes, California
  14. 1.8 14 km WSW of Aspen Springs, California
  15. 1.5 7 km WSW 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.

For this area

The largest earthquake within 50 km in our catalogue was M 4.8 on 2016-02-16 — it released about 350 times the energy of this one.

From the QuakeIndex catalogue, built from the USGS FDSN event service.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.