QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6md

15km SE of Mammoth Lakes, CA

· 6.8 km deep · released about 7.8 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Mono County 41 kmMadera County 88 kmMariposa County 93 kmEsmeralda County 111 kmTuolumne County 111 kmFresno County 113 kmMineral 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 1.6 (md)
Depth
6.8 km below the surface
Felt
no reports yet
Nearest
Mono County, 41 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1419 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 7.8 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,900,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,400,000× the energy of this one
  3. Around the size people start to feel M 3.0 120× the energy of this one
  4. This earthquake M 1.6 about 7.8 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 37.5478, -118.8552. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Mono County, CA 41 km (25 mi) S of here earthquakes near Mono County
Madera County, CA 88 km (54 mi) ENE of here earthquakes near Madera County
Mariposa County, CA 93 km (58 mi) E of here earthquakes near Mariposa County
Esmeralda County, NV 111 km (69 mi) WSW of here earthquakes near Esmeralda County
Tuolumne County, CA 111 km (69 mi) ESE of here earthquakes near Tuolumne County
Fresno County, CA 113 km (70 mi) NE of here earthquakes near Fresno 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. 1.7 4km WNW of Mammoth Lakes, CA
  2. 1.9 2km ENE of Round Valley, CA
  3. 1.8 4km ENE of Round Valley, CA
  4. 1.5 12km WNW of Toms Place, CA
  5. 2.5 13km SE of Mammoth Lakes, CA
  6. 1.6 13km SE of Mammoth Lakes, CA
  7. 1.8 14km SE of Mammoth Lakes, CA
  8. 1.8 10km WSW of Toms Place, CA
  9. 1.5 15km W of Round Valley, CA
  10. 2.3 22km WSW of Wilkerson, CA
  11. 2.6 10km WSW of Toms Place, CA
  12. 1.6 16km WSW of Toms Place, CA
  13. 1.7 6km NNE of Round Valley, CA
  14. 1.7 California-Nevada border region
  15. 1.8 28km NE of Oakhurst, CA

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 4.4 on 2020-02-01 — it released about 16,000 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.