QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8md

4 km WNW of Tiptonville, Tennessee

· 9.0 km deep · released about 13 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Lake County 8 kmNew Madrid County 25 kmPemiscot County 32 kmObion County 34 kmFulton County 34 kmDyer County 40 kmMississippi County 51 kmDunklin County 56 kmHickman 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 1.8 (md)
Depth
9.0 km below the surface
Felt
no reports yet
Nearest
Lake County, 8 km SSE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 104 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

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 36.4017, -89.5192. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Lake County, TN 8 km (5 mi) NNW of here earthquakes near Lake County
New Madrid County, MO 25 km (15 mi) SSE of here earthquakes near New Madrid County
Pemiscot County, MO 32 km (20 mi) NE of here earthquakes near Pemiscot County
Obion County, TN 34 km (21 mi) W of here earthquakes near Obion County
Fulton County, KY 34 km (21 mi) WSW of here earthquakes near Fulton County
Dyer County, TN 40 km (25 mi) NNW of here earthquakes near Dyer 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. 2.1 7 km ENE of Steele, Missouri
  2. 1.8 8 km E of Ridgely, Tennessee
  3. 1.6 4 km NW of Marston, Missouri
  4. 1.8 0 km ESE of Risco, Missouri
  5. 1.7 2 km NNE of Ridgely, Tennessee
  6. 1.7 7 km NNW of Ridgely, Tennessee
  7. 1.8 1 km NNE of Marston, Missouri
  8. 1.7 4 km WSW of Howardville, Missouri
  9. 1.9 5 km NW of Ridgely, Tennessee
  10. 1.6 7 km E of Hayward, Missouri
  11. 1.7 2 km NNE of Howardville, Missouri
  12. 1.6 7 km SE of Marston, Missouri
  13. 2.0 7 km S of Ridgely, Tennessee
  14. 1.8 6 km NW of Ridgely, Tennessee
  15. 1.7 4 km NW 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.

For this area

The largest earthquake within 50 km in our catalogue was M 4.0 on 2026-04-23 — it released about 2,400 times the energy of this one.

From the QuakeIndex catalogue, built from the USGS FDSN event service.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.