QuakeIndex

Earthquake · reviewed by a seismologist

M 3.1ml

15 km SW of Aspen Springs, California

· -0.8 km deep · released about 1,300 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Mono County 51 kmMadera County 85 kmMariposa County 96 kmFresno County 106 kmEsmeralda County 112 kmTuolumne County 117 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
-0.8 km below the surface
Felt
2 reports · strongest reported intensity II
Nearest
Mono County, 51 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1565 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 2 people have reported feeling it to USGS.

How big was it?

This earthquake released about 1,300 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 6.7 260,000× 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 8,200× the energy of this one
  4. This earthquake M 3.1 about 1,300 lb of TNT
  5. Around the size people start to feel M 3.0 this one released 1.4× 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 37.4545, -118.8378. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Mono County, CA 51 km (32 mi) S of here earthquakes near Mono County
Madera County, CA 85 km (53 mi) ENE of here earthquakes near Madera County
Mariposa County, CA 96 km (59 mi) E of here earthquakes near Mariposa County
Fresno County, CA 106 km (66 mi) NE of here earthquakes near Fresno County
Esmeralda County, NV 112 km (70 mi) WSW of here earthquakes near Esmeralda County
Tuolumne County, CA 117 km (73 mi) ESE 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. 2.7 10 km SW of Aspen Springs, California
  2. 2.6 California-Nevada border region
  3. 3.4 9 km SW of Aspen Springs, California
  4. 1.6 2 km WNW of Dixon Lane-Meadow Creek, California
  5. 2.5 9 km SW of Aspen Springs, California
  6. 2.6 9 km SW of Aspen Springs, California
  7. 1.5 7 km E of Mammoth Lakes, California
  8. 2.7 10 km SW of Aspen Springs, California
  9. 2.8 10 km SW of Aspen Springs, California
  10. 3.3 9 km SW of Aspen Springs, California
  11. 1.9 9 km SW of Aspen Springs, California
  12. 3.5 10 km SW of Aspen Springs, California
  13. 2.5 10 km SW of Aspen Springs, California
  14. 1.6 10 km SW of Aspen Springs, California
  15. 3.0 10 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.

For this area

The largest earthquake within 50 km in our catalogue was M 4.8 on 2016-02-16 — it released about 330 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.