QuakeIndex

Earthquake · reviewed by a seismologist

M 1.5md

14km SSW of Mariposa, CA

· 23 km deep · released about 5.7 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Mariposa County 25 kmMadera County 28 kmMerced County 66 kmFresno County 73 kmTuolumne County 74 kmStanislaus County 91 kmCalaveras County 104 kmMono 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 1.5 (md)
Depth
23 km below the surface
Felt
no reports yet
Nearest
Mariposa County, 25 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1820 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 5.7 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 2,600,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,900,000× the energy of this one
  3. Around the size people start to feel M 3.0 170× the energy of this one
  4. This earthquake M 1.5 about 5.7 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 37.3595, -120.0025. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Mariposa County, CA 25 km (16 mi) SSW of here earthquakes near Mariposa County
Madera County, CA 28 km (17 mi) NW of here earthquakes near Madera County
Merced County, CA 66 km (41 mi) ENE of here earthquakes near Merced County
Fresno County, CA 73 km (46 mi) NNW of here earthquakes near Fresno County
Tuolumne County, CA 74 km (46 mi) S of here earthquakes near Tuolumne County
Stanislaus County, CA 91 km (57 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

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

  1. 2.0 5km ENE of Bonadelle Ranchos-Madera Ranchos, CA
  2. 2.8 14km ENE of Midpines, CA
  3. 2.1 17km SSW of Mariposa, CA
  4. 2.2 7km ENE of Bonadelle Ranchos-Madera Ranchos, CA
  5. 2.0 5km ENE of Bonadelle Ranchos-Madera Ranchos, CA
  6. 1.8 5km E of Bonadelle Ranchos-Madera Ranchos, CA
  7. 2.1 6km ESE of Coarsegold, CA
  8. 1.7 8km SSE of Bootjack, CA
  9. 2.1 6km ENE of Bonadelle Ranchos-Madera Ranchos, CA
  10. 2.1 20km ENE of Le Grand, CA
  11. 2.0 6km NW of Friant, CA
  12. 2.5 21km S of Mariposa, CA
  13. 2.1 17km NE of Midpines, CA
  14. 2.1 5km ENE of Bonadelle Ranchos-Madera Ranchos, CA
  15. 1.7 11km ENE of Midpines, 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.