QuakeIndex

Earthquake · reviewed by a seismologist

M 2.3md

10 km SW of Union, Alabama

· 0.0 km deep · released about 82 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Greene County 11 kmHale County 41 kmPickens County 41 kmSumter County 41 kmNoxubee County 56 kmTuscaloosa County 60 kmKemper County 61 kmLowndes County 72 kmPerry County 74 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
0.0 km below the surface
Felt
no reports yet
Nearest
Greene County, 11 km SSE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3888 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 82 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 5.8 180,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 130,000× the energy of this one
  3. Around the size people start to feel M 3.0 12× the energy of this one
  4. This earthquake M 2.3 about 82 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 32.9325, -88.0068. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Greene County, AL 11 km (7 mi) NNW of here earthquakes near Greene County
Hale County, AL 41 km (26 mi) WNW of here earthquakes near Hale County
Pickens County, AL 41 km (26 mi) SSE of here earthquakes near Pickens County
Sumter County, AL 41 km (26 mi) NNE of here earthquakes near Sumter County
Noxubee County, MS 56 km (35 mi) ESE of here earthquakes near Noxubee County
Tuscaloosa County, AL 60 km (37 mi) SW of here earthquakes near Tuscaloosa County

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

Aftershocks so far

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

  1. 2.4 13 km W of Union, Alabama
  2. 2.1 11 km SSW of Tuscaloosa, Alabama
  3. 2.4 12 km WSW of Union, Alabama
  4. 2.1 10 km W of Union, Alabama
  5. 2.6 11 km WSW of Union, Alabama
  6. 2.0 8 km NNW of Livingston, Alabama
  7. 2.6 16 km W of Union, Alabama

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.