QuakeIndex

Earthquake · reviewed by a seismologist

M 2.3md

Missouri-Illinois border region

· 13 km deep · released about 85 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Cape Girardeau County 16 kmAlexander County 24 kmUnion County 27 kmScott County 35 kmPulaski County 37 kmBollinger County 46 kmPerry County 47 kmJackson County 48 kmBallard County 56 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 2.3 (md)
Depth
13 km below the surface
Felt
23 reports · strongest reported intensity III
Nearest
Cape Girardeau County, 16 km W
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2303 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 23 people have reported feeling it to USGS.

How big was it?

This earthquake released about 85 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.3 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 180,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 130,000× the energy of this one
  3. Around the size people start to feel M 3.0 11× the energy of this one
  4. This earthquake M 2.3 about 85 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 37.3620, -89.5047. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Cape Girardeau County, MO 16 km (10 mi) E of here earthquakes near Cape Girardeau County
Alexander County, IL 24 km (15 mi) NW of here earthquakes near Alexander County
Union County, IL 27 km (17 mi) WSW of here earthquakes near Union County
Scott County, MO 35 km (22 mi) N of here earthquakes near Scott County
Pulaski County, IL 37 km (23 mi) WNW of here earthquakes near Pulaski County
Bollinger County, MO 46 km (29 mi) E of here earthquakes near Bollinger County

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

Aftershocks so far

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

  1. 1.9 6 km WNW of Cape Girardeau, Missouri
  2. 1.6 11 km WNW of Jonesboro, Illinois
  3. 2.0 3 km NE of Ullin, Illinois
  4. 1.6 3 km WNW of Mill Creek, Illinois
  5. 2.1 1 km WSW of Mill Creek, Illinois
  6. 2.2 4 km ENE of Olmsted, Illinois
  7. 1.9 4 km WNW of Barlow, Kentucky
  8. 2.0 3 km SSW of McClure, Illinois
  9. 2.0 3 km WSW of Cape Girardeau, Missouri
  10. 1.7 5 km NW of Cape Girardeau, Missouri
  11. 1.8 8 km NE of Longtown, 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.