QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1md

18 km S of Auberry, CA

· 35 km deep · released about 41 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Fresno County 25 kmMadera County 41 kmMariposa County 83 kmTulare County 98 kmKings County 99 kmMerced County 116 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 2.1 (md)
Depth
35 km below the surface
Felt
no reports yet
Nearest
Fresno County, 25 km SW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 767 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 41 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.1 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 370,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 260,000× the energy of this one
  3. Around the size people start to feel M 3.0 23× the energy of this one
  4. This earthquake M 2.1 about 41 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 36.9198, -119.4615. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Fresno County, CA 25 km (15 mi) NE of here earthquakes near Fresno County
Madera County, CA 41 km (26 mi) SE of here earthquakes near Madera County
Mariposa County, CA 83 km (52 mi) SSE of here earthquakes near Mariposa County
Tulare County, CA 98 km (61 mi) NW of here earthquakes near Tulare County
Kings County, CA 99 km (62 mi) NNE of here earthquakes near Kings County
Merced County, CA 116 km (72 mi) ESE of here earthquakes near Merced County

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

Aftershocks so far

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

  1. 1.9 6 km ENE of Bonadelle Ranchos-Madera Ranchos, CA
  2. 1.7 6 km ENE of Bonadelle Ranchos-Madera Ranchos, CA
  3. 2.1 12 km NNW of Friant, CA
  4. 2.7 6 km WSW of Friant, CA
  5. 1.8 12 km S of Yosemite Lakes, CA
  6. 2.1 7 km ENE of Bonadelle Ranchos-Madera Ranchos, CA
  7. 2.3 11 km S of Yosemite Lakes, CA
  8. 2.4 17 km NNE of Squaw Valley, CA
  9. 1.8 12 km NNW of Friant, CA
  10. 2.0 2 km ESE of Yosemite Lakes, CA
  11. 2.5 3 km SE of Yosemite Lakes, CA
  12. 2.5 2 km WNW of North Fork, CA
  13. 1.9 6 km SSW of Yosemite Lakes, CA
  14. 1.8 6 km NNW of Yosemite Lakes, CA
  15. 1.8 6 km ENE of Bonadelle Ranchos-Madera Ranchos, 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.