QuakeIndex

Earthquake · reviewed by a seismologist

M 3.3md

4 km WSW of Howardville, Missouri

· 8.2 km deep · released about 1.2 tons of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N New Madrid County 4 kmLake County 29 kmPemiscot County 40 kmFulton County 41 kmStoddard County 42 kmMississippi County 43 kmObion County 50 kmScott County 55 kmDunklin 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 3.3 (md)
Depth
8.2 km below the surface
Felt
66 reports · strongest reported intensity IV
Nearest
New Madrid County, 4 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2473 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 66 people have reported feeling it to USGS.

How big was it?

This earthquake released about 1.2 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.3 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 140,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 6,200× the energy of this one
  3. Magna, Utah 2020 M 5.7 4,400× the energy of this one
  4. This earthquake M 3.3 about 1.2 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 2.5× more

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 36.5558, -89.6482. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
New Madrid County, MO 4 km (3 mi) S of here earthquakes near New Madrid County
Lake County, TN 29 km (18 mi) NNW of here earthquakes near Lake County
Pemiscot County, MO 40 km (25 mi) NNE of here earthquakes near Pemiscot County
Fulton County, KY 41 km (26 mi) W of here earthquakes near Fulton County
Stoddard County, MO 42 km (26 mi) SE of here earthquakes near Stoddard County
Mississippi County, MO 43 km (27 mi) SW of here earthquakes near Mississippi County

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

Aftershocks so far

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

  1. 1.6 3 km WNW of Marston, Missouri
  2. 1.7 4 km NW of Marston, Missouri
  3. 1.9 8 km W of Tiptonville, Tennessee
  4. 1.7 7 km W of East Prairie, Missouri
  5. 1.7 6 km ESE of Marston, Missouri
  6. 2.2 3 km NE of Ridgely, Tennessee
  7. 2.2 6 km NW of Tiptonville, Tennessee
  8. 1.9 2 km SW of Ridgely, Tennessee
  9. 1.7 6 km NW of Ridgely, Tennessee
  10. 2.4 7 km NW of Tiptonville, Tennessee
  11. 1.6 5 km NW of Ridgely, Tennessee
  12. 2.0 3 km NW of Marston, Missouri
  13. 2.1 2 km SSW of Ridgely, Tennessee
  14. 2.1 2 km SSW of Ridgely, Tennessee
  15. 2.0 4 km WSW of Howardville, 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.