QuakeIndex

Earthquake · reviewed by a seismologist

M 2.3md

13 km S of Arcadia, Missouri

· 15 km deep · released about 74 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Iron County 19 kmMadison County 23 kmReynolds County 35 kmSt. Francois County 40 kmWayne County 42 kmBollinger County 54 kmWashington County 59 kmSte. Genevieve County 60 kmCarter County 66 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
15 km below the surface
Felt
2 reports · strongest reported intensity II
Nearest
Iron County, 19 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3176 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 74 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 5.8 200,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 140,000× the energy of this one
  3. Around the size people start to feel M 3.0 13× the energy of this one
  4. This earthquake M 2.3 about 74 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 37.4695, -90.5998. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Iron County, MO 19 km (12 mi) SSE of here earthquakes near Iron County
Madison County, MO 23 km (14 mi) W of here earthquakes near Madison County
Reynolds County, MO 35 km (22 mi) ENE of here earthquakes near Reynolds County
St. Francois County, MO 40 km (25 mi) SSW of here earthquakes near St. Francois County
Wayne County, MO 42 km (26 mi) NNW of here earthquakes near Wayne County
Bollinger County, MO 54 km (33 mi) WNW 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. 2.1 12 km ENE of Greenville, Missouri
  2. 2.1 4 km N of Marquand, Missouri
  3. 2.0 16 km WNW of Caledonia, Missouri
  4. 1.9 5 km W of Terre du Lac, Missouri
  5. 2.0 15 km SSW of Cherokee Pass, Missouri
  6. 2.1 12 km E of Greenville, Missouri
  7. 2.3 11 km E of Greenville, Missouri
  8. 2.1 13 km SE of Ellington, Missouri
  9. 2.0 1 km NE of Farmington, Missouri
  10. 2.3 5 km N of Centerville, Missouri
  11. 1.8 9 km ENE of Leadington, 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.