QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1md

10 km S of Concord, Kentucky

· 16 km deep · released about 49 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Lewis County 11 kmAdams County 27 kmMason County 30 kmFleming County 31 kmRowan County 43 kmGreenup County 48 kmScioto County 49 kmCarter County 49 kmBrown County 51 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 2.1 (md)
Depth
16 km below the surface
Felt
no reports yet
Nearest
Lewis County, 11 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1950 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 49 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.1 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 310,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 220,000× the energy of this one
  3. Around the size people start to feel M 3.0 19× the energy of this one
  4. This earthquake M 2.1 about 49 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 38.5893, -83.4793. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Lewis County, KY 11 km (7 mi) WNW of here earthquakes near Lewis County
Adams County, OH 27 km (17 mi) S of here earthquakes near Adams County
Mason County, KY 30 km (19 mi) E of here earthquakes near Mason County
Fleming County, KY 31 km (19 mi) NE of here earthquakes near Fleming County
Rowan County, KY 43 km (27 mi) N of here earthquakes near Rowan County
Greenup County, KY 48 km (30 mi) W of here earthquakes near Greenup County

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

Aftershocks so far

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

  1. 1.7 15 km E of Flemingsburg, Kentucky
  2. 2.2 2 km SSE of Concord, Kentucky
  3. 2.2 7 km WSW of Vanceburg, Kentucky
  4. 2.4 8 km SSE of Flemingsburg, Kentucky
  5. 2.4 9 km NW of Olive Hill, Kentucky
  6. 2.4 6 km SSE of Georgetown, Ohio
  7. 2.2 3 km SSW of Bentonville, Ohio
  8. 2.5 3 km SW of Old Washington, Kentucky
  9. 2.4 3 km SW of Rarden, Ohio
  10. 2.2 20 km SSW of Vanceburg, Kentucky
  11. 2.1 3 km SE of Ripley, Ohio
  12. 3.0 2 km E of Manchester, Ohio

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.