QuakeIndex

Earthquake · reviewed by a seismologist

M 2.7ml

13km E of Mammoth Lakes, CA

· 3.3 km deep · released about 380 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Mono County 33 kmMadera County 93 kmMariposa County 95 kmMineral County 106 kmEsmeralda County 107 kmTuolumne County 109 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 2.7 (ml)
Depth
3.3 km below the surface
Felt
6 reports · strongest reported intensity III
Nearest
Mono County, 33 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1261 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 6 people have reported feeling it to USGS.

How big was it?

This earthquake released about 380 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 40,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 29,000× the energy of this one
  3. Around the size people start to feel M 3.0 2.5× the energy of this one
  4. This earthquake M 2.7 about 380 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 37.6247, -118.8318. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Mono County, CA 33 km (20 mi) S of here earthquakes near Mono County
Madera County, CA 93 km (58 mi) ENE of here earthquakes near Madera County
Mariposa County, CA 95 km (59 mi) E of here earthquakes near Mariposa County
Mineral County, NV 106 km (66 mi) SSW of here earthquakes near Mineral County
Esmeralda County, NV 107 km (66 mi) W of here earthquakes near Esmeralda County
Tuolumne County, CA 109 km (68 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

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

  1. 2.2 42km SSW of Qualeys Camp, NV
  2. 2.2 10km SSW of Toms Place, CA
  3. 2.5 6km NW of Round Valley, CA
  4. 1.6 13km W of Toms Place, CA
  5. 1.6 12km SW of Toms Place, CA
  6. 1.6 12km W of Toms Place, CA
  7. 2.5 27km SE of Bodie, CA
  8. 2.0 29km SE of Bodie, CA
  9. 2.6 6km NW of Round Valley, CA
  10. 1.8 13km SE of Mammoth Lakes, CA
  11. 1.6 20km SW of Toms Place, CA
  12. 2.0 19km SW of Toms Place, CA
  13. 1.7 2km ESE of Mammoth Lakes, CA
  14. 1.5 6km E of Round Valley, CA
  15. 2.0 17km WSW 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 5,800 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.