QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9md

7 km NW of Lepanto, Arkansas

· 16 km deep · released about 21 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Poinsett County 29 kmCraighead County 29 kmMississippi County 32 kmCrittenden County 52 kmGreene County 53 kmCross County 54 kmTipton County 61 kmDunklin County 62 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 1.9 (md)
Depth
16 km below the surface
Felt
no reports yet
Nearest
Poinsett County, 29 km WSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 807 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 21 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 730,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 520,000× the energy of this one
  3. Around the size people start to feel M 3.0 46× the energy of this one
  4. This earthquake M 1.9 about 21 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 35.6620, -90.3872. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Poinsett County, AR 29 km (18 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 32 km (20 mi) WSW of here earthquakes near Mississippi County
Crittenden County, AR 52 km (32 mi) N of here earthquakes near Crittenden County
Greene County, AR 53 km (33 mi) SSE of here earthquakes near Greene County
Cross County, AR 54 km (34 mi) NE of here earthquakes near Cross County

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

Aftershocks so far

25 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. 2.4 3 km ENE of Dell, Arkansas
  9. 2.2 6 km NNE of Dell, Arkansas
  10. 2.1 7 km WSW of Etowah, Arkansas
  11. 2.2 5 km ENE of Dell, Arkansas
  12. 3.1 3 km SW of Blytheville, Arkansas
  13. 2.6 3 km SW of Blytheville, Arkansas
  14. 1.8 5 km S of Caraway, Arkansas
  15. 2.0 2 km SE 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.