QuakeIndex

Earthquake · reviewed by a seismologist

M 2.8md

14km ENE of Midpines, CA

· 32 km deep · released about 530 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Mariposa County 12 kmMadera County 45 kmTuolumne County 48 kmMono County 87 kmCalaveras County 93 kmMerced County 95 kmFresno County 95 kmStanislaus County 107 kmAlpine County 113 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 2.8 (md)
Depth
32 km below the surface
Felt
12 reports · strongest reported intensity III
Nearest
Mariposa County, 12 km WSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1401 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 12 people have reported feeling it to USGS.

How big was it?

This earthquake released about 530 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 29,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 20,000× the energy of this one
  3. Around the size people start to feel M 3.0 1.8× the energy of this one
  4. This earthquake M 2.8 about 530 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 37.6095, -119.7873. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Mariposa County, CA 12 km (7 mi) ENE of here earthquakes near Mariposa County
Madera County, CA 45 km (28 mi) N of here earthquakes near Madera County
Tuolumne County, CA 48 km (30 mi) SSE of here earthquakes near Tuolumne County
Mono County, CA 87 km (54 mi) WSW of here earthquakes near Mono County
Calaveras County, CA 93 km (58 mi) SE of here earthquakes near Calaveras County
Merced County, CA 95 km (59 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

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

  1. 1.6 11km SSW of Mariposa, CA
  2. 2.1 11km SSW of Mariposa, CA
  3. 2.0 2km WSW of Oakhurst, CA
  4. 1.9 12km S of Mariposa, CA
  5. 1.6 9km W of Ahwahnee, CA
  6. 2.3 21km SSW of Mariposa, CA
  7. 2.1 16km E of Yosemite Valley, CA
  8. 1.6 29km NE of Oakhurst, CA
  9. 1.7 22km SSE of Yosemite Valley, CA
  10. 2.4 21km ESE of Yosemite Valley, CA
  11. 1.8 16km SE of Yosemite Valley, CA
  12. 3.4 21km ENE of Le Grand, CA
  13. 2.4 21km S of Mariposa, CA
  14. 1.8 14km SE of Yosemite Valley, CA
  15. 1.8 28km NE of Oakhurst, 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.