QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8md

9 km ENE of Leadington, Missouri

· 3.3 km deep · released about 16 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N St. Francois County 10 kmSte. Genevieve County 20 kmIron County 38 kmMadison County 44 kmWashington County 45 kmJefferson County 45 kmMonroe County 49 kmRandolph County 54 kmPerry County 54 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 1.8 (md)
Depth
3.3 km below the surface
Felt
no reports yet
Nearest
St. Francois County, 10 km SW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2995 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

How big was it?

This earthquake released about 16 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 970,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 680,000× the energy of this one
  3. Around the size people start to feel M 3.0 61× the energy of this one
  4. This earthquake M 1.8 about 16 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 37.8677, -90.3885. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
St. Francois County, MO 10 km (6 mi) NE of here earthquakes near St. Francois County
Ste. Genevieve County, MO 20 km (12 mi) W of here earthquakes near Ste. Genevieve County
Iron County, MO 38 km (24 mi) NE of here earthquakes near Iron County
Madison County, MO 44 km (27 mi) N of here earthquakes near Madison County
Washington County, MO 45 km (28 mi) E of here earthquakes near Washington County
Jefferson County, MO 45 km (28 mi) SSE of here earthquakes near Jefferson County

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

Aftershocks so far

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

  1. 2.0 14 km SSE of Weingarten, Missouri
  2. 2.0 6 km SSW of Valmeyer, Illinois
  3. 2.2 15 km SW of Ozora, Missouri
  4. 2.1 4 km N of Marquand, Missouri
  5. 1.7 3 km WNW of Olympian Village, Missouri
  6. 2.3 4 km S of Valmeyer, Illinois
  7. 2.4 8 km SW of Ozora, Missouri
  8. 2.3 4 km E of Herculaneum, Missouri
  9. 1.9 5 km NW of Weingarten, Missouri
  10. 2.2 4 km E of Bonne Terre, Missouri
  11. 2.2 5 km NNE of Terre du Lac, Missouri
  12. 1.9 5 km W of Terre du Lac, Missouri
  13. 2.1 7 km SSW of Olympian Village, Missouri
  14. 2.2 2 km SE of De Soto, Missouri
  15. 2.3 7 km SSW of Olympian Village, 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

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