QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1md

46km SW of Wilkerson, CA

· 17 km deep · released about 38 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Fresno County 83 kmTulare County 86 kmMadera County 90 kmMono County 102 kmMariposa County 119 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
17 km below the surface
Felt
no reports yet
Nearest
Fresno County, 83 km WSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1453 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 38 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 5.8 390,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 280,000× the energy of this one
  3. Around the size people start to feel M 3.0 25× the energy of this one
  4. This earthquake M 2.1 about 38 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 36.9985, -118.7732. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Fresno County, CA 83 km (51 mi) ENE of here earthquakes near Fresno County
Tulare County, CA 86 km (53 mi) N of here earthquakes near Tulare County
Madera County, CA 90 km (56 mi) ESE of here earthquakes near Madera County
Mono County, CA 102 km (64 mi) S of here earthquakes near Mono County
Mariposa County, CA 119 km (74 mi) ESE of here earthquakes near Mariposa County
Esmeralda County, NV 133 km (83 mi) SW of here earthquakes near Esmeralda County

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

Aftershocks so far

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

  1. 2.2 18 km WSW of Round Valley, CA
  2. 2.4 22 km SE of Shaver Lake, CA
  3. 1.9 1 km SSW of Round Valley, CA
  4. 1.7 8 km WSW of West Bishop, CA
  5. 1.7 11 km WSW of Round Valley, CA
  6. 1.6 1km NNE of Round Valley, CA
  7. 1.9 2km W of Wilkerson, CA
  8. 1.6 20km SW of Toms Place, CA
  9. 1.7 20km WSW of Round Valley, CA
  10. 1.6 4km WSW of Wilkerson, CA
  11. 2.2 3km ESE of Round Valley, CA
  12. 1.7 8km ESE of Wilkerson, CA
  13. 1.8 18km WSW of Big Pine, CA
  14. 1.5 15km W of Round Valley, CA
  15. 2.3 22km WSW of Wilkerson, 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.

For this area

The largest earthquake within 50 km in our catalogue was M 4.8 on 2016-02-16 — it released about 11,000 times the energy of this one.

From the QuakeIndex catalogue, built from the USGS FDSN event service.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.