QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1md

20km S of Auberry, CA

· 27 km deep · released about 40 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Fresno County 22 kmMadera County 42 kmMariposa County 84 kmKings County 97 kmTulare County 97 kmMerced County 115 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
27 km below the surface
Felt
no reports yet
Nearest
Fresno County, 22 km SW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1883 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 40 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 5.8 380,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 270,000× the energy of this one
  3. Around the size people start to feel M 3.0 24× the energy of this one
  4. This earthquake M 2.1 about 40 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 36.9010, -119.4768. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Fresno County, CA 22 km (14 mi) NE of here earthquakes near Fresno County
Madera County, CA 42 km (26 mi) SE of here earthquakes near Madera County
Mariposa County, CA 84 km (52 mi) SSE of here earthquakes near Mariposa County
Kings County, CA 97 km (60 mi) NNE of here earthquakes near Kings County
Tulare County, CA 97 km (60 mi) NW of here earthquakes near Tulare County
Merced County, CA 115 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

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

  1. 1.9 6km ENE of Bonadelle Ranchos-Madera Ranchos, CA
  2. 2.0 4km SE of Shaver Lake, CA
  3. 1.7 5km ENE of Bonadelle Ranchos-Madera Ranchos, CA
  4. 1.8 5km ENE of Bonadelle Ranchos-Madera Ranchos, CA
  5. 2.0 5km ENE of Bonadelle Ranchos-Madera Ranchos, CA
  6. 2.2 7km ENE of Bonadelle Ranchos-Madera Ranchos, CA
  7. 2.0 5km ENE of Bonadelle Ranchos-Madera Ranchos, CA
  8. 2.2 3km NW of Sanger, CA
  9. 1.8 5km E of Bonadelle Ranchos-Madera Ranchos, CA
  10. 2.5 4km E of Orange Cove, CA
  11. 2.1 6km ESE of Coarsegold, CA
  12. 2.1 6km ENE of Bonadelle Ranchos-Madera Ranchos, CA
  13. 2.0 6km NW of Friant, CA
  14. 2.1 5km ENE of Bonadelle Ranchos-Madera Ranchos, CA
  15. 2.1 6km 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.