QuakeIndex

Earthquake · reviewed by a seismologist

M 2.7md

4 km SSW of Cairo, Illinois

· 6.8 km deep · released about 320 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Mississippi County 18 kmBallard County 19 kmCarlisle County 23 kmAlexander County 27 kmPulaski County 28 kmScott County 34 kmHickman County 38 kmMcCracken County 44 kmFulton County 46 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 2.7 (md)
Depth
6.8 km below the surface
Felt
4 reports · strongest reported intensity II
Nearest
Mississippi County, 18 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3383 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 4 people have reported feeling it to USGS.

How big was it?

This earthquake released about 320 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 48,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 34,000× the energy of this one
  3. Around the size people start to feel M 3.0 3× the energy of this one
  4. This earthquake M 2.7 about 320 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 36.9683, -89.1975. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Mississippi County, MO 18 km (11 mi) NNE of here earthquakes near Mississippi County
Ballard County, KY 19 km (12 mi) WSW of here earthquakes near Ballard County
Carlisle County, KY 23 km (14 mi) WNW of here earthquakes near Carlisle County
Alexander County, IL 27 km (17 mi) SSE of here earthquakes near Alexander County
Pulaski County, IL 28 km (18 mi) SSW of here earthquakes near Pulaski County
Scott County, MO 34 km (21 mi) ESE of here earthquakes near Scott 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. 2.0 0 km S of Commerce, Missouri
  2. 2.0 5 km SSE of Bertrand, Missouri
  3. 2.3 5 km WSW of Pinhook, Missouri
  4. 1.6 9 km SE of Matthews, Missouri
  5. 2.1 10 km N of New Madrid, Missouri
  6. 2.4 4 km SW of Bardwell, KY
  7. 2.3 10 km SSE of Matthews, Missouri
  8. 1.6 southeastern Missouri
  9. 1.7 8 km ESE of Matthews, Missouri
  10. 3.3 9 km ESE of Wyatt, 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.