QuakeIndex

Earthquake · reviewed by a seismologist

M 2.5md

7 km W of Tamaroa, Illinois

· 13 km deep · released about 150 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Perry County 7 kmWashington County 27 kmFranklin County 37 kmJackson County 39 kmJefferson County 39 kmRandolph County 45 kmClinton County 54 kmWilliamson County 56 kmPerry County 63 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 2.5 (md)
Depth
13 km below the surface
Felt
6 reports · strongest reported intensity II
Nearest
Perry County, 7 km SW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2780 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 6 people have reported feeling it to USGS.

How big was it?

This earthquake released about 150 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 99,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 70,000× the energy of this one
  3. Around the size people start to feel M 3.0 6.2× the energy of this one
  4. This earthquake M 2.5 about 150 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 38.1292, -89.3110. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Perry County, IL 7 km (4 mi) NE of here earthquakes near Perry County
Washington County, IL 27 km (17 mi) SSE of here earthquakes near Washington County
Franklin County, IL 37 km (23 mi) WNW of here earthquakes near Franklin County
Jackson County, IL 39 km (24 mi) N of here earthquakes near Jackson County
Jefferson County, IL 39 km (24 mi) WSW of here earthquakes near Jefferson County
Randolph County, IL 45 km (28 mi) E of here earthquakes near Randolph County

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

Aftershocks so far

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

  1. 2.4 4 km NNE of Valier, Illinois
  2. 2.3 7 km NW of Woodlawn, Illinois
  3. 2.5 6 km ENE of Pinckneyville, Illinois
  4. 3.1 5 km WNW of Waltonville, Illinois
  5. 2.2 1 km S of Benton, Illinois
  6. 2.2 6 km E of Ellis Grove, Illinois
  7. 2.5 6 km NNW of Mount Vernon, Illinois
  8. 2.0 4 km NNW of Venedy, Illinois
  9. 2.1 7 km NW of Du Bois, 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.