QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8md

7 km SSW of Lugoff, South Carolina

· 2.1 km deep · released about 15 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Kershaw County 22 kmRichland County 23 kmSumter County 41 kmLee County 42 kmFairfield County 47 kmCalhoun County 55 kmLancaster County 58 kmLexington County 60 kmDarlington 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 1.8 (md)
Depth
2.1 km below the surface
Felt
92 reports · strongest reported intensity VI
Nearest
Kershaw County, 22 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1485 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 92 people have reported feeling it to USGS.

How big was it?

This earthquake released about 15 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,000,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 730,000× the energy of this one
  3. Around the size people start to feel M 3.0 65× the energy of this one
  4. This earthquake M 1.8 about 15 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 34.1643, -80.7047. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Kershaw County, SC 22 km (14 mi) SSW of here earthquakes near Kershaw County
Richland County, SC 23 km (14 mi) NE of here earthquakes near Richland County
Sumter County, SC 41 km (25 mi) NW of here earthquakes near Sumter County
Lee County, SC 42 km (26 mi) W of here earthquakes near Lee County
Fairfield County, SC 47 km (29 mi) ESE of here earthquakes near Fairfield County
Calhoun County, SC 55 km (34 mi) N of here earthquakes near Calhoun County

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

Aftershocks so far

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

  1. 2.0 5 km WSW of Irmo, South Carolina
  2. 2.8 4 km WSW of Irmo, South Carolina
  3. 2.1 5 km SSW of Lugoff, South Carolina
  4. 2.7 5 km ESE of Elgin, South Carolina
  5. 2.0 7 km E of Elgin, South Carolina
  6. 1.8 9 km SSW of Kershaw, South Carolina
  7. 2.6 6 km E of Elgin, South Carolina
  8. 2.3 6 km E of Elgin, South Carolina
  9. 1.6 6 km ESE of Elgin, South Carolina
  10. 1.9 8 km SE of Elgin, South Carolina
  11. 2.0 7 km ESE of Elgin, South Carolina
  12. 2.5 6 km E of Elgin, South Carolina
  13. 2.1 6 km ESE of Elgin, South Carolina
  14. 2.3 5 km ESE of Elgin, South Carolina
  15. 2.2 6 km ESE of Elgin, South Carolina

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.