QuakeIndex

Earthquake · reviewed by a seismologist

M 2.4md

5 km NW of Clanton, Alabama

· 4.6 km deep · released about 100 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Chilton County 6 kmAutauga County 38 kmCoosa County 41 kmShelby County 44 kmBibb County 45 kmElmore County 58 kmPerry County 64 kmTalladega County 72 kmDallas County 73 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 2.4 (md)
Depth
4.6 km below the surface
Felt
3 reports · strongest reported intensity III
Nearest
Chilton County, 6 km WSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1715 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 3 people have reported feeling it to USGS.

How big was it?

This earthquake released about 100 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.4 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 140,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 100,000× the energy of this one
  3. Around the size people start to feel M 3.0 9.1× the energy of this one
  4. This earthquake M 2.4 about 100 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 32.8737, -86.6723. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Chilton County, AL 6 km (3 mi) ENE of here earthquakes near Chilton County
Autauga County, AL 38 km (24 mi) N of here earthquakes near Autauga County
Coosa County, AL 41 km (25 mi) W of here earthquakes near Coosa County
Shelby County, AL 44 km (27 mi) S of here earthquakes near Shelby County
Bibb County, AL 45 km (28 mi) ESE of here earthquakes near Bibb County
Elmore County, AL 58 km (36 mi) WNW of here earthquakes near Elmore County

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

Aftershocks so far

1 earthquake has been recorded within 50 km since this one.

  1. 3.1 10 km E of Maplesville, 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.