QuakeIndex

Earthquake · reviewed by a seismologist

M 2.4md

6 km NW of Addison, Alabama

· 16 km deep · released about 120 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Winston County 16 kmLawrence County 33 kmCullman County 35 kmMorgan County 42 kmWalker County 51 kmFranklin County 61 kmMarion County 62 kmLimestone County 67 kmBlount County 67 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
16 km below the surface
Felt
no reports yet
Nearest
Winston County, 16 km SW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 253 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 120 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 5.8 130,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 92,000× the energy of this one
  3. Around the size people start to feel M 3.0 8.2× the energy of this one
  4. This earthquake M 2.4 about 120 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 34.2435, -87.2238. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Winston County, AL 16 km (10 mi) NE of here earthquakes near Winston County
Lawrence County, AL 33 km (21 mi) SSE of here earthquakes near Lawrence County
Cullman County, AL 35 km (22 mi) WNW of here earthquakes near Cullman County
Morgan County, AL 42 km (26 mi) SW of here earthquakes near Morgan County
Walker County, AL 51 km (32 mi) N of here earthquakes near Walker County
Franklin County, AL 61 km (38 mi) ESE of here earthquakes near Franklin 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. 2.3 5 km NW of Addison, 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.