QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1md

3 km SE of Ripley, Ohio

· 15 km deep · released about 41 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Mason County 15 kmBrown County 23 kmBracken County 26 kmAdams County 32 kmRobertson County 32 kmFleming County 41 kmLewis County 44 kmClermont County 46 kmPendleton County 47 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
15 km below the surface
Felt
no reports yet
Nearest
Mason County, 15 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1621 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 41 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 5.8 370,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 260,000× the energy of this one
  3. Around the size people start to feel M 3.0 23× the energy of this one
  4. This earthquake M 2.1 about 41 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 38.7285, -83.8170. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Mason County, KY 15 km (9 mi) N of here earthquakes near Mason County
Brown County, OH 23 km (14 mi) S of here earthquakes near Brown County
Bracken County, KY 26 km (16 mi) ENE of here earthquakes near Bracken County
Adams County, OH 32 km (20 mi) WSW of here earthquakes near Adams County
Robertson County, KY 32 km (20 mi) NE of here earthquakes near Robertson County
Fleming County, KY 41 km (26 mi) NNW of here earthquakes near Fleming County

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

Aftershocks so far

7 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 6 km SSE of Georgetown, Ohio
  6. 2.2 3 km SSW of Bentonville, Ohio
  7. 2.5 3 km SW of Old Washington, 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.