QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1md

7km SSW of Yosemite Lakes, CA

· 35 km deep · released about 47 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Madera County 10 kmFresno County 43 kmMariposa County 51 kmMerced County 83 kmTuolumne County 100 kmKings County 117 kmStanislaus County 117 kmMono County 119 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
35 km below the surface
Felt
no reports yet
Nearest
Madera County, 10 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2312 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 47 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 5.8 320,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 230,000× the energy of this one
  3. Around the size people start to feel M 3.0 20× the energy of this one
  4. This earthquake M 2.1 about 47 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 37.1285, -119.7913. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Madera County, CA 10 km (6 mi) SSW of here earthquakes near Madera County
Fresno County, CA 43 km (26 mi) NNW of here earthquakes near Fresno County
Mariposa County, CA 51 km (32 mi) SSE of here earthquakes near Mariposa County
Merced County, CA 83 km (51 mi) E of here earthquakes near Merced County
Tuolumne County, CA 100 km (62 mi) S of here earthquakes near Tuolumne County
Kings County, CA 117 km (73 mi) N of here earthquakes near Kings County

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

Aftershocks so far

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

  1. 1.6 14km SW of Bootjack, CA
  2. 1.9 10km ENE of Biola, CA
  3. 1.7 9km NNW of Yosemite Lakes, CA
  4. 1.9 8km ESE of Oakhurst, CA
  5. 1.6 7km E of North Fork, CA
  6. 1.7 7km W of Madera, CA
  7. 1.7 6km NW of Yosemite Lakes, CA
  8. 1.8 13km S of Mariposa, CA
  9. 2.2 7km NNE of Oakhurst, CA
  10. 2.4 7km SE of North Fork, CA
  11. 2.2 21km ENE of Le Grand, CA
  12. 2.6 14km S of Mariposa, CA
  13. 1.5 1km E of Yosemite Lakes, CA
  14. 1.6 18km S of Bootjack, CA
  15. 1.7 15km S of Bootjack, 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.