QuakeIndex

Earthquake · reviewed by a seismologist

M 2.8ml

5 km WSW of Mammoth Lakes, California

· -0.8 km deep · released about 430 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Mono County 35 kmMariposa County 78 kmMadera County 79 kmTuolumne County 93 kmFresno County 111 kmMineral 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 2.8 (ml)
Depth
-0.8 km below the surface
Felt
21 reports · strongest reported intensity IV
Nearest
Mono County, 35 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3009 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 21 people have reported feeling it to USGS.

How big was it?

This earthquake released about 430 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 35,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 25,000× the energy of this one
  3. Around the size people start to feel M 3.0 2.2× the energy of this one
  4. This earthquake M 2.8 about 430 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 37.6300, -119.0283. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Mono County, CA 35 km (21 mi) SSW of here earthquakes near Mono County
Mariposa County, CA 78 km (49 mi) E of here earthquakes near Mariposa County
Madera County, CA 79 km (49 mi) NE of here earthquakes near Madera County
Tuolumne County, CA 93 km (58 mi) ESE of here earthquakes near Tuolumne County
Fresno County, CA 111 km (69 mi) NNE of here earthquakes near Fresno County
Mineral County, NV 112 km (70 mi) SSW of here earthquakes near Mineral 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. 1.7 9 km ESE of Mammoth Lakes, California
  2. 1.6 14 km SW of Aspen Springs, California
  3. 1.9 14 km SW of Aspen Springs, California
  4. 2.0 5 km E of Mammoth Lakes, California
  5. 1.5 22 km NW of Benton, California
  6. 1.6 19 km NNW of Sunny Slopes, California
  7. 1.9 14 km SW of Aspen Springs, California
  8. 2.2 19 km SW of Aspen Springs, California
  9. 1.6 8 km ESE of Mammoth Lakes, California
  10. 1.8 28 km NW of Benton, California
  11. 2.7 8 km ENE of Swall Meadows, California
  12. 2.1 28 km NW of Benton, California
  13. 1.9 14 km WSW of Aspen Springs, California
  14. 1.8 9 km W of Aspen Springs, California
  15. 2.3 15 km SW of Aspen Springs, California

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.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.