QuakeIndex

Earthquake · automatic estimate, may change

M 2.2md

17 km N of Mammoth Lakes, CA

· 1.4 km deep · released about 56 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Mono County 18 kmMariposa County 83 kmTuolumne County 88 kmMadera County 92 kmMineral County 96 kmAlpine County 116 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 2.2 (md)
Depth
1.4 km below the surface
Felt
no reports yet
Nearest
Mono County, 18 km NE
Status
Automatic — a machine’s first estimate, which may change

USGS · last changed by USGS · we first saw it 769 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 56 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.2 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 270,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 190,000× the energy of this one
  3. Around the size people start to feel M 3.0 17× the energy of this one
  4. This earthquake M 2.2 about 56 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 37.7882, -119.0050. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Mono County, CA 18 km (11 mi) SW of here earthquakes near Mono County
Mariposa County, CA 83 km (52 mi) ENE of here earthquakes near Mariposa County
Tuolumne County, CA 88 km (55 mi) ESE of here earthquakes near Tuolumne County
Madera County, CA 92 km (57 mi) NE of here earthquakes near Madera County
Mineral County, NV 96 km (60 mi) SSW of here earthquakes near Mineral County
Alpine County, CA 116 km (72 mi) SE of here earthquakes near Alpine County

Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.

Aftershocks so far

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

  1. 2.3 10 km NW of Toms Place, CA
  2. 1.6 14 km SE of Mammoth Lakes, CA
  3. 1.6 16 km WSW of Toms Place, CA
  4. 1.7 28 km SE of Bodie, CA
  5. 2.5 10 km ESE of Mammoth Lakes, CA
  6. 2.0 16 km WSW of Toms Place, CA
  7. 1.8 15 km SSE of Mammoth Lakes, CA
  8. 2.2 18 km WSW of Toms Place, CA
  9. 1.5 15 km WSW of Toms Place, CA
  10. 2.4 17 km SW of Toms Place, CA
  11. 1.7 14 km WNW of Round Valley, CA
  12. 1.7 10 km WSW of Toms Place, CA
  13. 2.3 16 km ESE of Yosemite Valley, CA
  14. 1.9 17 km ESE of Yosemite Valley, CA
  15. 1.9 15 km SW of Toms Place, 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 5.2 on 2020-04-11 — it released about 39,000 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.