QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1md

9km W of Yosemite Lakes, CA

· 21 km deep · released about 38 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Madera County 11 kmMariposa County 41 kmFresno County 53 kmMerced County 75 kmTuolumne County 91 kmStanislaus County 108 kmMono County 118 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 2.1 (md)
Depth
21 km below the surface
Felt
no reports yet
Nearest
Madera County, 11 km E
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2390 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 38 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.1 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 390,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 280,000× the energy of this one
  3. Around the size people start to feel M 3.0 25× the energy of this one
  4. This earthquake M 2.1 about 38 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 37.2028, -119.8723. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Madera County, CA 11 km (7 mi) W of here earthquakes near Madera County
Mariposa County, CA 41 km (26 mi) S of here earthquakes near Mariposa County
Fresno County, CA 53 km (33 mi) NNW of here earthquakes near Fresno County
Merced County, CA 75 km (47 mi) E of here earthquakes near Merced County
Tuolumne County, CA 91 km (57 mi) S of here earthquakes near Tuolumne County
Stanislaus County, CA 108 km (67 mi) ESE of here earthquakes near Stanislaus County

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

Aftershocks so far

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

  1. 2.5 19km SSW of Mariposa, CA
  2. 1.6 4km WSW of Auberry, CA
  3. 1.8 3 km NNW of Shaver Lake, California
  4. 1.8 2km NNW of Coarsegold, CA
  5. 2.1 10km NE of Fairmead, CA
  6. 2.0 15km SSW of Bootjack, CA
  7. 2.1 2km SW of Shaver Lake, CA
  8. 1.5 11km NNE of North Fork, CA
  9. 2.4 3km ENE of Bootjack, CA
  10. 1.9 18km SSW of Yosemite Village, CA
  11. 2.3 20km SSW of Bootjack, CA
  12. 2.0 11km S of Yosemite Lakes, CA
  13. 2.0 6km W of Yosemite Lakes, CA
  14. 1.9 9km NNW of Ahwahnee, CA
  15. 2.1 2km NW of North Fork, 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.

On USGS

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