QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7md

28km NE of Oakhurst, CA

· 22 km deep · released about 9.6 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Madera County 43 kmMariposa County 45 kmMono County 67 kmTuolumne County 77 kmFresno County 84 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 1.7 (md)
Depth
22 km below the surface
Felt
no reports yet
Nearest
Madera County, 43 km SW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1249 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 9.6 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,600,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,100,000× the energy of this one
  3. Around the size people start to feel M 3.0 99× the energy of this one
  4. This earthquake M 1.7 about 9.6 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 37.4865, -119.4092. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Madera County, CA 43 km (27 mi) NE of here earthquakes near Madera County
Mariposa County, CA 45 km (28 mi) ESE of here earthquakes near Mariposa County
Mono County, CA 67 km (42 mi) SW of here earthquakes near Mono County
Tuolumne County, CA 77 km (48 mi) SE of here earthquakes near Tuolumne County
Fresno County, CA 84 km (52 mi) NNE of here earthquakes near Fresno County
Merced County, CA 121 km (75 mi) ENE of here earthquakes near Merced County

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

Aftershocks so far

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

  1. 1.5 17 km SE of Yosemite Valley, CA
  2. 1.8 17 km SSE of Mammoth Lakes, CA
  3. 2.8 17 km SSE of Mammoth Lakes, CA
  4. 1.9 18 km SSE of Mammoth Lakes, CA
  5. 1.8 23 km SE of Yosemite Valley, CA
  6. 1.8 8 km W of Mammoth Lakes, CA
  7. 1.8 8 km W of Mammoth Lakes, CA
  8. 1.8 18 km WSW of Toms Place, CA
  9. 2.5 28 km SSW of Mammoth Lakes, CA
  10. 2.5 13 km NW of Yosemite Lakes, CA
  11. 1.6 21 km ESE of Yosemite Valley, CA
  12. 1.5 22 km ESE of Yosemite Valley, CA
  13. 2.3 6 km SE of North Fork, CA
  14. 1.6 18 km SSE of Mammoth Lakes, CA
  15. 1.5 20 km 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.