QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8md

9 km SSE of Manila, Arkansas

· 6.7 km deep · released about 14 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Mississippi County 9 kmDunklin County 40 kmCraighead County 44 kmLauderdale County 47 kmTipton County 49 kmGreene County 52 kmPoinsett County 55 kmPemiscot County 56 kmClay County 68 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
6.7 km below the surface
Felt
no reports yet
Nearest
Mississippi County, 9 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 847 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 14 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 1,100,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 790,000× the energy of this one
  3. Around the size people start to feel M 3.0 70× the energy of this one
  4. This earthquake M 1.8 about 14 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 35.7995, -90.1450. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Mississippi County, AR 9 km (6 mi) WNW of here earthquakes near Mississippi County
Dunklin County, MO 40 km (25 mi) S of here earthquakes near Dunklin County
Craighead County, AR 44 km (27 mi) E of here earthquakes near Craighead County
Lauderdale County, TN 47 km (29 mi) W of here earthquakes near Lauderdale County
Tipton County, TN 49 km (31 mi) NW of here earthquakes near Tipton County
Greene County, AR 52 km (32 mi) SE of here earthquakes near Greene County

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

Aftershocks so far

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

  1. 2.1 5 km ENE of Steele, Missouri
  2. 1.8 1 km NNW of Cooter, Missouri
  3. 2.6 1 km NNW of Cooter, Missouri
  4. 1.6 4 km E of Steele, Missouri
  5. 2.2 1 km NNW of Cooter, Missouri
  6. 1.9 7 km ENE of Steele, Missouri
  7. 2.0 4 km NE of Dell, Arkansas
  8. 1.7 2 km N of Blytheville, Arkansas
  9. 2.4 3 km ENE of Dell, Arkansas
  10. 2.2 6 km NNE of Dell, Arkansas
  11. 2.1 4 km E of Steele, Missouri
  12. 2.9 4 km ENE of Steele, Missouri
  13. 2.5 5 km ENE of Steele, Missouri
  14. 2.1 6 km ENE of Steele, Missouri
  15. 2.1 7 km WSW of Etowah, Arkansas

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.