QuakeIndex

Earthquake · reviewed by a seismologist

M 2.2md

4 km ENE of Olmsted, Illinois

· 17 km deep · released about 62 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Pulaski County 8 kmBallard County 16 kmAlexander County 27 kmMassac County 30 kmJohnson County 33 kmMcCracken County 33 kmUnion County 37 kmCarlisle County 38 kmMississippi County 47 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 2.2 (md)
Depth
17 km below the surface
Felt
2 reports · strongest reported intensity III
Nearest
Pulaski County, 8 km WNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 953 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 2 people have reported feeling it to USGS.

How big was it?

This earthquake released about 62 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.2 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 240,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 170,000× the energy of this one
  3. Around the size people start to feel M 3.0 15× the energy of this one
  4. This earthquake M 2.2 about 62 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 37.1968, -89.0415. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Pulaski County, IL 8 km (5 mi) ESE of here earthquakes near Pulaski County
Ballard County, KY 16 km (10 mi) N of here earthquakes near Ballard County
Alexander County, IL 27 km (17 mi) E of here earthquakes near Alexander County
Massac County, IL 30 km (19 mi) W of here earthquakes near Massac County
Johnson County, IL 33 km (20 mi) SSW of here earthquakes near Johnson County
McCracken County, KY 33 km (21 mi) WNW of here earthquakes near McCracken County

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

Aftershocks so far

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

  1. 2.5 6 km NW of Massac, Kentucky
  2. 1.6 11 km WNW of Jonesboro, Illinois
  3. 1.7 5 km SSE of Bertrand, Missouri
  4. 2.0 3 km NE of Ullin, Illinois
  5. 2.4 2 km NNE of Wilson City, Missouri
  6. 2.3 5 km SSW of Charleston, Missouri
  7. 1.6 3 km WNW of Mill Creek, Illinois
  8. 1.9 5 km ENE of Kevil, Kentucky
  9. 2.1 1 km WSW of Mill Creek, Illinois
  10. 1.9 4 km SSE of Bertrand, Missouri

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.