QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1md

8 km SE of Trumann, Arkansas

· 3.6 km deep · released about 37 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Poinsett County 23 kmCraighead County 29 kmMississippi County 38 kmCross County 48 kmCrittenden County 49 kmGreene County 56 kmTipton County 64 kmDunklin County 68 kmShelby County 69 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
3.6 km below the surface
Felt
no reports yet
Nearest
Poinsett County, 23 km WSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1786 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 37 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 5.8 410,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 290,000× the energy of this one
  3. Around the size people start to feel M 3.0 26× the energy of this one
  4. This earthquake M 2.1 about 37 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 35.6253, -90.4342. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Poinsett County, AR 23 km (14 mi) ENE of here earthquakes near Poinsett County
Craighead County, AR 29 km (18 mi) SE of here earthquakes near Craighead County
Mississippi County, AR 38 km (24 mi) WSW of here earthquakes near Mississippi County
Cross County, AR 48 km (30 mi) NE of here earthquakes near Cross County
Crittenden County, AR 49 km (30 mi) NNW of here earthquakes near Crittenden County
Greene County, AR 56 km (35 mi) SSE of here earthquakes near Greene County

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

Aftershocks so far

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

  1. 1.8 4 km ENE of Dell, Arkansas
  2. 1.6 9 km NE of Etowah, Arkansas
  3. 2.3 7 km SSE of Manila, Arkansas
  4. 1.9 7 km NW of Lepanto, Arkansas
  5. 1.8 9 km SSE of Manila, Arkansas
  6. 2.0 8 km W of Lepanto, Arkansas
  7. 2.8 5 km W of Dell, Arkansas
  8. 2.3 3 km NE of Dell, Arkansas
  9. 1.6 5 km NE of Etowah, Arkansas
  10. 1.6 3 km SSE of Caraway, Arkansas
  11. 1.7 6 km NE of Etowah, Arkansas
  12. 1.6 6 km NE of Etowah, Arkansas
  13. 3.8 6 km NE of Etowah, Arkansas
  14. 2.1 Arkansas
  15. 1.9 1 km S of Cherry Valley, 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.