QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1md

8 km N of Etowah, Arkansas

· 25 km deep · released about 40 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Mississippi County 17 kmCraighead County 35 kmDunklin County 42 kmGreene County 46 kmPoinsett County 48 kmLauderdale County 55 kmTipton County 56 kmPemiscot County 61 kmClay County 65 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
25 km below the surface
Felt
1 report · strongest reported intensity II
Nearest
Mississippi County, 17 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2045 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 40 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 5.8 380,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 270,000× the energy of this one
  3. Around the size people start to feel M 3.0 24× the energy of this one
  4. This earthquake M 2.1 about 40 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 35.8018, -90.2398. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Mississippi County, AR 17 km (11 mi) WNW of here earthquakes near Mississippi County
Craighead County, AR 35 km (22 mi) E of here earthquakes near Craighead County
Dunklin County, MO 42 km (26 mi) SSW of here earthquakes near Dunklin County
Greene County, AR 46 km (29 mi) SE of here earthquakes near Greene County
Poinsett County, AR 48 km (30 mi) ENE of here earthquakes near Poinsett County
Lauderdale County, TN 55 km (34 mi) W of here earthquakes near Lauderdale County

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

Aftershocks so far

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

  1. 1.8 7 km N of Etowah, Arkansas
  2. 1.7 5 km NNW of Lepanto, Arkansas
  3. 2.7 6 km SE of Manila, Arkansas
  4. 2.1 1 km WSW of Cooter, Missouri
  5. 1.5 2 km NNW of Cooter, Missouri
  6. 2.3 7 km NNE of Blytheville, Arkansas
  7. 2.0 0 km WNW of Gosnell, Arkansas
  8. 1.5 8 km WNW of Lepanto, Arkansas
  9. 2.0 1 km W of Cooter, Missouri
  10. 1.5 2 km N of Etowah, Arkansas
  11. 2.2 4 km NNE of Manila, Arkansas
  12. 1.8 Tennessee
  13. 1.9 3 km N of Blytheville, Arkansas
  14. 2.2 7 km NNE of Etowah, Arkansas
  15. 1.7 7 km NNW of Lepanto, 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.