QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1md

4 km NW of Bone Gap, Illinois

· 21 km deep · released about 47 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Edwards County 6 kmWabash County 18 kmRichland County 27 kmWayne County 35 kmLawrence County 38 kmGibson County 43 kmWhite County 45 kmClay County 49 kmPosey County 52 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
21 km below the surface
Felt
no reports yet
Nearest
Edwards County, 6 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 652 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 47 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 5.8 320,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 230,000× the energy of this one
  3. Around the size people start to feel M 3.0 20× the energy of this one
  4. This earthquake M 2.1 about 47 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 38.4728, -88.0378. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Edwards County, IL 6 km (4 mi) N of here earthquakes near Edwards County
Wabash County, IL 18 km (11 mi) W of here earthquakes near Wabash County
Richland County, IL 27 km (17 mi) S of here earthquakes near Richland County
Wayne County, IL 35 km (22 mi) E of here earthquakes near Wayne County
Lawrence County, IL 38 km (24 mi) SW of here earthquakes near Lawrence County
Gibson County, IN 43 km (27 mi) WNW of here earthquakes near Gibson County

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

Aftershocks so far

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

  1. 3.5 6 km NE of West Salem, Illinois
  2. 2.1 5 km WNW of Grayville, Illinois
  3. 2.6 2 km ESE of Cynthiana, Indiana
  4. 2.4 7 km NE of Mount Carmel, Illinois

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.