QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8md

7 km SSE of New Madrid, Missouri

· 7.3 km deep · released about 13 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N New Madrid County 16 kmLake County 21 kmFulton County 28 kmObion County 36 kmMississippi County 38 kmPemiscot County 44 kmHickman County 50 kmDyer County 53 kmStoddard County 54 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 1.8 (md)
Depth
7.3 km below the surface
Felt
1 report · strongest reported intensity I
Nearest
New Madrid County, 16 km WNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1292 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 13 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,200,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 840,000× the energy of this one
  3. Around the size people start to feel M 3.0 75× the energy of this one
  4. This earthquake M 1.8 about 13 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 36.5255, -89.4943. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
New Madrid County, MO 16 km (10 mi) ESE of here earthquakes near New Madrid County
Lake County, TN 21 km (13 mi) N of here earthquakes near Lake County
Fulton County, KY 28 km (17 mi) W of here earthquakes near Fulton County
Obion County, TN 36 km (22 mi) WNW of here earthquakes near Obion County
Mississippi County, MO 38 km (24 mi) SSW of here earthquakes near Mississippi County
Pemiscot County, MO 44 km (27 mi) NE of here earthquakes near Pemiscot County

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

Aftershocks so far

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

  1. 1.6 3 km ESE of Ridgely, Tennessee
  2. 1.6 7 km ESE of Ridgely, Tennessee
  3. 1.5 7 km NW of Tiptonville, Tennessee
  4. 1.7 8 km NW of Tiptonville, Tennessee
  5. 2.8 3 km ESE of Ridgely, Tennessee
  6. 1.6 2 km ESE of Ridgely, Tennessee
  7. 1.6 6 km NW of Ridgely, Tennessee
  8. 2.6 3 km ESE of Ridgely, Tennessee
  9. 1.6 5 km NW of Tiptonville, Tennessee
  10. 2.1 6 km S of Marston, Missouri
  11. 1.6 9 km NW of Ridgely, Tennessee
  12. 2.4 7 km NW of Tiptonville, Tennessee
  13. 1.8 8 km NNW of Dyersburg, Tennessee
  14. 1.5 3 km ESE of Ridgely, Tennessee
  15. 1.8 southeastern 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.