QuakeIndex

Earthquake · reviewed by a seismologist

M 2.4md

21 km SE of Jackson, Kentucky

· 7.9 km deep · released about 120 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Breathitt County 14 kmPerry County 23 kmKnott County 23 kmMagoffin County 30 kmFloyd County 41 kmWolfe County 43 kmLeslie County 43 kmOwsley County 45 kmLetcher County 46 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
7.9 km below the surface
Felt
no reports yet
Nearest
Breathitt County, 14 km NW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2456 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 37.4428, -83.1853. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Breathitt County, KY 14 km (9 mi) SE of here earthquakes near Breathitt County
Perry County, KY 23 km (14 mi) N of here earthquakes near Perry County
Knott County, KY 23 km (14 mi) WNW of here earthquakes near Knott County
Magoffin County, KY 30 km (19 mi) SSW of here earthquakes near Magoffin County
Floyd County, KY 41 km (26 mi) WSW of here earthquakes near Floyd County
Wolfe County, KY 43 km (27 mi) SE of here earthquakes near Wolfe County

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

Aftershocks so far

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

  1. 2.7 18 km SSE of Hyden, Kentucky
  2. 2.2 10 km WSW of Hyden, Kentucky
  3. 2.3 16 km NE of Jackson, Kentucky

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.