QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8md

10 km SW of Yosemite Village, CA

· 23 km deep · released about 16 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Mariposa County 23 kmTuolumne County 45 kmMadera County 53 kmMono County 76 kmCalaveras County 95 kmFresno County 103 kmAlpine County 104 kmMerced County 107 kmStanislaus County 117 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
23 km below the surface
Felt
no reports yet
Nearest
Mariposa County, 23 km WSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 160 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 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 37.6867, -119.6867. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Mariposa County, CA 23 km (15 mi) ENE of here earthquakes near Mariposa County
Tuolumne County, CA 45 km (28 mi) SSE of here earthquakes near Tuolumne County
Madera County, CA 53 km (33 mi) N of here earthquakes near Madera County
Mono County, CA 76 km (47 mi) WSW of here earthquakes near Mono County
Calaveras County, CA 95 km (59 mi) SE of here earthquakes near Calaveras County
Fresno County, CA 103 km (64 mi) N of here earthquakes near Fresno County

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

Aftershocks so far

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

  1. 1.7 22 km SE of Yosemite Valley, CA
  2. 2.5 22 km SE of Yosemite Valley, CA
  3. 1.9 16 km ESE of Yosemite Valley, CA
  4. 1.8 14 km SSW of Bootjack, CA
  5. 1.7 23 km WSW of Mammoth Lakes, CA
  6. 1.6 31 km NNE of North Fork, CA
  7. 1.7 16 km SE of Yosemite Valley, CA
  8. 1.8 18 km ESE of Yosemite Valley, CA
  9. 2.1 19 km SE of Yosemite Valley, CA
  10. 1.5 19 km SE of Yosemite Valley, CA
  11. 1.7 21 km ESE of Yosemite Valley, CA
  12. 1.5 19 km SE of Yosemite Valley, CA
  13. 1.5 19 km SE of Yosemite Valley, CA
  14. 2.2 17 km NW of Yosemite Lakes, CA
  15. 2.1 17 km NW of Yosemite Lakes, 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.