QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6md

4km ESE of Mariposa, CA

· 27 km deep · released about 6.4 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Mariposa County 11 kmMadera County 33 kmTuolumne County 61 kmMerced County 77 kmFresno County 83 kmStanislaus County 96 kmCalaveras County 97 kmMono County 104 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 1.6 (md)
Depth
27 km below the surface
Felt
no reports yet
Nearest
Mariposa County, 11 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2697 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 6.4 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,400,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,700,000× the energy of this one
  3. Around the size people start to feel M 3.0 150× the energy of this one
  4. This earthquake M 1.6 about 6.4 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 37.4772, -119.9227. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Mariposa County, CA 11 km (7 mi) S of here earthquakes near Mariposa County
Madera County, CA 33 km (21 mi) NNW of here earthquakes near Madera County
Tuolumne County, CA 61 km (38 mi) S of here earthquakes near Tuolumne County
Merced County, CA 77 km (48 mi) ENE of here earthquakes near Merced County
Fresno County, CA 83 km (52 mi) NNW of here earthquakes near Fresno County
Stanislaus County, CA 96 km (59 mi) E of here earthquakes near Stanislaus County

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

Aftershocks so far

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

  1. 2.1 9km W of Yosemite Lakes, CA
  2. 2.2 19km SSW of Mariposa, CA
  3. 1.5 28km NE of Oakhurst, CA
  4. 1.5 2km S of Oakhurst, CA
  5. 2.0 18km SSW of Bootjack, CA
  6. 1.6 21km SSW of Bootjack, CA
  7. 1.8 5km WSW of Oakhurst, CA
  8. 2.0 5km ESE of Yosemite Lakes, CA
  9. 2.5 18km SE of Groveland-Big Oak Flat, CA
  10. 2.0 8km WSW of Mariposa, CA
  11. 2.8 10km N of North Fork, CA
  12. 1.9 14km SSW of Bootjack, CA
  13. 1.6 7km ESE of Coarsegold, CA
  14. 2.3 10km W of Ahwahnee, CA
  15. 1.6 17km SE of Yosemite Valley, 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.