QuakeIndex

Earthquake · reviewed by a seismologist

M 2.3md

13 km N of Double Springs, Alabama

· 7.0 km deep · released about 98 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Winston County 13 kmLawrence County 29 kmFranklin County 46 kmMarion County 48 kmCullman County 50 kmMorgan County 54 kmWalker County 54 kmColbert County 61 kmLimestone County 71 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
7.0 km below the surface
Felt
no reports yet
Nearest
Winston County, 13 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1117 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 98 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 5.8 150,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 110,000× the energy of this one
  3. Around the size people start to feel M 3.0 9.8× the energy of this one
  4. This earthquake M 2.3 about 98 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 34.2713, -87.3872. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Winston County, AL 13 km (8 mi) N of here earthquakes near Winston County
Lawrence County, AL 29 km (18 mi) SSW of here earthquakes near Lawrence County
Franklin County, AL 46 km (29 mi) ESE of here earthquakes near Franklin County
Marion County, AL 48 km (30 mi) ENE of here earthquakes near Marion County
Cullman County, AL 50 km (31 mi) WNW of here earthquakes near Cullman County
Morgan County, AL 54 km (33 mi) WSW of here earthquakes near Morgan 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. 2.3 5 km NW of Addison, Alabama
  2. 2.4 6 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.