QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1md

3 km SW of Anniston, Missouri

· 7.8 km deep · released about 51 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Mississippi County 6 kmFulton County 31 kmScott County 33 kmCarlisle County 34 kmNew Madrid County 36 kmHickman County 37 kmBallard County 41 kmAlexander County 43 kmPulaski County 50 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
7.8 km below the surface
Felt
1 report · strongest reported intensity I
Nearest
Mississippi County, 6 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1684 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 1 person has 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 36.8010, -89.3523. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Mississippi County, MO 6 km (4 mi) WSW of here earthquakes near Mississippi County
Fulton County, KY 31 km (19 mi) NNW of here earthquakes near Fulton County
Scott County, MO 33 km (21 mi) SE of here earthquakes near Scott County
Carlisle County, KY 34 km (21 mi) W of here earthquakes near Carlisle County
New Madrid County, MO 36 km (22 mi) NE of here earthquakes near New Madrid County
Hickman County, KY 37 km (23 mi) WNW of here earthquakes near Hickman County

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

Aftershocks so far

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

  1. 2.0 southeastern Missouri
  2. 2.1 6 km NW of Parma, Missouri
  3. 1.6 8 km NNW of Tiptonville, Tennessee
  4. 2.4 8 km E of Matthews, Missouri
  5. 2.0 10 km SE of Matthews, Missouri
  6. 2.6 10 km SE of Matthews, Missouri
  7. 1.8 10 km SE of Matthews, Missouri
  8. 1.8 southeastern Missouri
  9. 1.7 2 km S of Howardville, Missouri
  10. 1.6 4 km SW of Samburg, Tennessee
  11. 1.6 1 km NNE of Marston, Missouri
  12. 2.0 3 km SSE of Matthews, Missouri
  13. 2.0 5 km ESE of Howardville, Missouri
  14. 1.8 0 km ENE of Howardville, Missouri
  15. 1.9 2 km NNW of Marston, 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.