QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8md

11km ENE of Mammoth Lakes, CA

· 3.1 km deep · released about 16 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Mono County 28 kmMariposa County 93 kmMadera County 93 kmMineral County 103 kmTuolumne County 105 kmEsmeralda 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 1.8 (md)
Depth
3.1 km below the surface
Felt
2 reports
Nearest
Mono County, 28 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2146 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 2 people have reported feeling it to USGS.

How big was it?

This earthquake released about 16 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 930,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 660,000× the energy of this one
  3. Around the size people start to feel M 3.0 59× the energy of this one
  4. This earthquake M 1.8 about 16 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 37.6607, -118.8612. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Mono County, CA 28 km (18 mi) S of here earthquakes near Mono County
Mariposa County, CA 93 km (58 mi) E of here earthquakes near Mariposa County
Madera County, CA 93 km (58 mi) ENE of here earthquakes near Madera County
Mineral County, NV 103 km (64 mi) SSW of here earthquakes near Mineral County
Tuolumne County, CA 105 km (65 mi) ESE of here earthquakes near Tuolumne County
Esmeralda County, NV 109 km (68 mi) W of here earthquakes near Esmeralda County

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

Aftershocks so far

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

  1. 1.7 8km E of Mammoth Lakes, CA
  2. 1.9 30km SE of Bodie, CA
  3. 1.8 38km SSW of Qualeys Camp, NV
  4. 1.9 38km SSW of Qualeys Camp, NV
  5. 1.6 28km SE of Bodie, CA
  6. 1.5 31 km ENE of Lee Vining, California
  7. 1.7 33 km ENE of Lee Vining, California
  8. 1.5 29km SE of Bodie, CA
  9. 1.7 15km WSW of Toms Place, CA
  10. 2.0 10km SSW of Toms Place, CA
  11. 2.1 21km SE of Bodie, CA
  12. 2.1 43km NNE of Toms Place, CA
  13. 1.6 19km SE of Yosemite Valley, CA
  14. 2.2 29km SE of Bodie, CA
  15. 3.1 29km SE of Bodie, 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 130,000 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.