QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1md

5 km WNW of Grayville, Illinois

· 24 km deep · released about 46 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Edwards County 16 kmWhite County 23 kmWabash County 27 kmPosey County 32 kmWayne County 37 kmGibson County 42 kmHamilton County 47 kmRichland County 49 kmVanderburgh County 50 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
24 km below the surface
Felt
3 reports · strongest reported intensity III
Nearest
Edwards County, 16 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 301 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 3 people have reported feeling it to USGS.

How big was it?

This earthquake released about 46 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 5.8 330,000× 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 21× the energy of this one
  4. This earthquake M 2.1 about 46 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 38.2748, -88.0583. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Edwards County, IL 16 km (10 mi) S of here earthquakes near Edwards County
White County, IL 23 km (15 mi) NNE of here earthquakes near White County
Wabash County, IL 27 km (17 mi) SW of here earthquakes near Wabash County
Posey County, IN 32 km (20 mi) NNW of here earthquakes near Posey County
Wayne County, IL 37 km (23 mi) ESE of here earthquakes near Wayne County
Gibson County, IN 42 km (26 mi) W of here earthquakes near Gibson County

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

Aftershocks so far

1 earthquake has been recorded within 50 km since this one.

  1. 3.5 6 km NE of West Salem, 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.