QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1md

4 km N of Sedgewickville, Missouri

· 2.4 km deep · released about 51 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Perry County 19 kmCape Girardeau County 27 kmBollinger County 29 kmMadison County 40 kmSte. Genevieve County 43 kmJackson County 52 kmRandolph County 56 kmSt. Francois County 58 kmUnion County 58 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
2.4 km below the surface
Felt
4 reports · strongest reported intensity III
Nearest
Perry County, 19 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3421 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 4 people have reported feeling it to USGS.

How big was it?

This earthquake released about 51 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 5.8 300,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 210,000× the energy of this one
  3. Around the size people start to feel M 3.0 19× the energy of this one
  4. This earthquake M 2.1 about 51 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 37.5552, -89.9002. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Perry County, MO 19 km (12 mi) SSW of here earthquakes near Perry County
Cape Girardeau County, MO 27 km (17 mi) NW of here earthquakes near Cape Girardeau County
Bollinger County, MO 29 km (18 mi) NNE of here earthquakes near Bollinger County
Madison County, MO 40 km (25 mi) ENE of here earthquakes near Madison County
Ste. Genevieve County, MO 43 km (27 mi) SSE of here earthquakes near Ste. Genevieve County
Jackson County, IL 52 km (33 mi) WSW of here earthquakes near Jackson County

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

Aftershocks so far

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

  1. 2.0 14 km SSE of Weingarten, Missouri
  2. 1.9 6 km WNW of Cape Girardeau, Missouri
  3. 2.2 15 km SW of Ozora, Missouri
  4. 1.6 11 km WNW of Jonesboro, Illinois
  5. 2.1 4 km N of Marquand, Missouri
  6. 2.4 8 km SW of Ozora, Missouri
  7. 2.0 3 km WSW of Cape Girardeau, Missouri
  8. 2.0 15 km SSW of Cherokee Pass, Missouri
  9. 1.7 5 km NW of Cape Girardeau, Missouri
  10. 1.8 8 km NE of Longtown, Missouri
  11. 2.3 Missouri-Illinois border region
  12. 1.8 6 km ESE of Jackson, Missouri
  13. 2.0 2 km NNW of Frohna, Missouri
  14. 2.5 4 km WSW of Delta, 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.