QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1md

5 km WNW of Portageville, Missouri

· 5.1 km deep · released about 41 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N New Madrid County 20 kmPemiscot County 25 kmLake County 27 kmDunklin County 42 kmStoddard County 49 kmFulton County 53 kmDyer County 54 kmObion County 55 kmClay 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 2.1 (md)
Depth
5.1 km below the surface
Felt
1 report · strongest reported intensity II
Nearest
New Madrid County, 20 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2164 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 41 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 5.8 370,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 260,000× the energy of this one
  3. Around the size people start to feel M 3.0 23× the energy of this one
  4. This earthquake M 2.1 about 41 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 36.4375, -89.7590. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
New Madrid County, MO 20 km (12 mi) SSW of here earthquakes near New Madrid County
Pemiscot County, MO 25 km (16 mi) N of here earthquakes near Pemiscot County
Lake County, TN 27 km (17 mi) WNW of here earthquakes near Lake County
Dunklin County, MO 42 km (26 mi) NE of here earthquakes near Dunklin County
Stoddard County, MO 49 km (30 mi) SSE of here earthquakes near Stoddard County
Fulton County, KY 53 km (33 mi) WSW of here earthquakes near Fulton County

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

Aftershocks so far

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

  1. 2.3 2 km NW of Marston, Missouri
  2. 1.6 9 km S of Ridgely, Tennessee
  3. 1.6 2 km NW of Ridgely, Tennessee
  4. 2.5 8 km SW of Caruthersville, Missouri
  5. 1.5 1 km W of Cooter, Missouri
  6. 1.5 2 km S of Howardville, Missouri
  7. 2.0 6 km E of Ridgely, Tennessee
  8. 2.1 2 km NE of Marston, Missouri
  9. 1.8 2 km NE of Marston, Missouri
  10. 1.9 5 km WSW of Tiptonville, Tennessee
  11. 1.6 10 km NNW of Tiptonville, Tennessee
  12. 1.5 southeastern Missouri
  13. 2.0 6 km E of Ridgely, Tennessee
  14. 1.6 5 km SSW of Tiptonville, Tennessee
  15. 2.1 2 km NNE of Cooter, 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.