QuakeIndex

Earthquake · reviewed by a seismologist

M 2.3md

15 km ENE of Bonne Terre, Missouri

· 17 km deep · released about 82 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N St. Francois County 20 kmSte. Genevieve County 23 kmJefferson County 34 kmMonroe County 39 kmWashington County 44 kmIron County 47 kmRandolph County 51 kmMadison County 56 kmPerry County 60 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
17 km below the surface
Felt
2 reports · strongest reported intensity III
Nearest
St. Francois County, 20 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1488 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 2 people have reported feeling it to USGS.

How big was it?

This earthquake released about 82 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 12× the energy of this one
  4. This earthquake M 2.3 about 82 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 37.9755, -90.3948. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
St. Francois County, MO 20 km (12 mi) NNE of here earthquakes near St. Francois County
Ste. Genevieve County, MO 23 km (14 mi) WNW of here earthquakes near Ste. Genevieve County
Jefferson County, MO 34 km (21 mi) SSE of here earthquakes near Jefferson County
Monroe County, IL 39 km (24 mi) SSW of here earthquakes near Monroe County
Washington County, MO 44 km (27 mi) E of here earthquakes near Washington County
Iron County, MO 47 km (29 mi) NE of here earthquakes near Iron County

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

Aftershocks so far

20 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. 1.7 3 km WNW of Olympian Village, Missouri
  5. 2.3 4 km S of Valmeyer, Illinois
  6. 2.4 8 km SW of Ozora, Missouri
  7. 2.3 4 km E of Herculaneum, Missouri
  8. 1.9 5 km NW of Weingarten, Missouri
  9. 2.5 eastern 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 5 km ENE of Ruma, 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.