QuakeIndex

Earthquake · reviewed by a seismologist

M 2.3md

11 km NNE of Helena, Arkansas

· 16 km deep · released about 72 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Tunica County 17 kmLee County 26 kmPhillips County 36 kmCoahoma County 45 kmSt. Francis County 47 kmQuitman County 48 kmTate County 56 kmDeSoto County 58 kmMonroe County 60 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 2.3 (md)
Depth
16 km below the surface
Felt
8 reports · strongest reported intensity III
Nearest
Tunica County, 17 km E
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2192 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 8 people have reported feeling it to USGS.

How big was it?

This earthquake released about 72 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.3 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 210,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 150,000× the energy of this one
  3. Around the size people start to feel M 3.0 13× the energy of this one
  4. This earthquake M 2.3 about 72 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 34.6308, -90.5533. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Tunica County, MS 17 km (10 mi) W of here earthquakes near Tunica County
Lee County, AR 26 km (16 mi) SE of here earthquakes near Lee County
Phillips County, AR 36 km (22 mi) NE of here earthquakes near Phillips County
Coahoma County, MS 45 km (28 mi) N of here earthquakes near Coahoma County
St. Francis County, AR 47 km (29 mi) SSE of here earthquakes near St. Francis County
Quitman County, MS 48 km (30 mi) NNW of here earthquakes near Quitman County

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

Aftershocks so far

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

  1. 2.0 2 km W of Helena, Arkansas
  2. 2.0 6 km SW of Darling, Mississippi

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.