QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1md

7 km WSW of Etowah, Arkansas

· 7.7 km deep · released about 49 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Mississippi County 24 kmCraighead County 33 kmPoinsett County 37 kmGreene County 53 kmTipton County 54 kmDunklin County 55 kmCrittenden County 55 kmLauderdale County 61 kmCross County 62 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
7.7 km below the surface
Felt
no reports yet
Nearest
Mississippi County, 24 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 390 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 49 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 5.8 310,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 220,000× the energy of this one
  3. Around the size people start to feel M 3.0 19× the energy of this one
  4. This earthquake M 2.1 about 49 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 35.6947, -90.2997. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Mississippi County, AR 24 km (15 mi) WSW of here earthquakes near Mississippi County
Craighead County, AR 33 km (21 mi) ESE of here earthquakes near Craighead County
Poinsett County, AR 37 km (23 mi) ENE of here earthquakes near Poinsett County
Greene County, AR 53 km (33 mi) SSE of here earthquakes near Greene County
Tipton County, TN 54 km (34 mi) WNW of here earthquakes near Tipton County
Dunklin County, MO 55 km (34 mi) SSW of here earthquakes near Dunklin County

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

Aftershocks so far

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

  1. 1.9 6 km WNW of Victoria, Arkansas
  2. 1.8 7 km WSW of Marked Tree, Arkansas
  3. 1.9 1 km W of Blytheville, Arkansas
  4. 1.9 3 km N of Etowah, Arkansas
  5. 1.9 3 km NW of Dell, Arkansas
  6. 1.9 5 km W of Dell, Arkansas
  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

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.