QuakeIndex

Earthquake · reviewed by a seismologist

M 1.5md

27km S of Mammoth Lakes, CA

· 2.6 km deep · released about 6.2 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Mono County 59 kmMadera County 72 kmMariposa County 86 kmFresno County 93 kmTuolumne County 112 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 1.5 (md)
Depth
2.6 km below the surface
Felt
no reports yet
Nearest
Mono County, 59 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1797 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 6.2 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,500,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,700,000× the energy of this one
  3. Around the size people start to feel M 3.0 150× the energy of this one
  4. This earthquake M 1.5 about 6.2 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 37.3923, -118.9668. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Mono County, CA 59 km (37 mi) S of here earthquakes near Mono County
Madera County, CA 72 km (45 mi) ENE of here earthquakes near Madera County
Mariposa County, CA 86 km (53 mi) ESE of here earthquakes near Mariposa County
Fresno County, CA 93 km (58 mi) NE of here earthquakes near Fresno County
Tuolumne County, CA 112 km (70 mi) SE of here earthquakes near Tuolumne County
Esmeralda County, NV 125 km (78 mi) WSW of here earthquakes near Esmeralda 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. 1.8 15km SW of Toms Place, CA
  2. 1.6 2km WNW of Dixon Lane-Meadow Creek, CA
  3. 1.5 31km SSW of Round Valley, CA
  4. 1.9 17km WSW of Toms Place, CA
  5. 2.4 6km N of Round Valley, CA
  6. 2.5 16km WSW of Toms Place, CA
  7. 1.8 9km NNW of West Bishop, CA
  8. 2.6 9km ENE of Round Valley, CA
  9. 2.0 30km ENE of Shaver Lake, CA
  10. 1.6 17km WSW of Toms Place, CA
  11. 1.5 11km E of Mammoth Lakes, CA
  12. 2.2 8km NNW of West Bishop, CA
  13. 1.8 29km NE of Oakhurst, CA
  14. 1.6 17km WSW of Mammoth Lakes, CA
  15. 1.9 30km 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 20,000 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.