Earthquake · reviewed by a seismologist
M 2.3md
17 km NW of Winnsboro, South Carolina
- When
- Magnitude
- M 2.3 (md)
- Depth
- 7.2 km below the surface
- Felt
- no reports yet
- Nearest
- Fairfield County, 14 km SE
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 142 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 74 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.
- Mineral, Virginia 2011 M 5.8 200,000× the energy of this one
- Magna, Utah 2020 M 5.7 140,000× the energy of this one
- Around the size people start to feel M 3.0 13× the energy of this one
- This earthquake M 2.3 about 74 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 34.4948, -81.2250. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction | |
|---|---|---|---|
| Fairfield County, SC | 14 km (9 mi) | NW of here | earthquakes near Fairfield County |
| Chester County, SC | 22 km (14 mi) | SSW of here | earthquakes near Chester County |
| Newberry County, SC | 41 km (26 mi) | ENE of here | earthquakes near Newberry County |
| Union County, SC | 42 km (26 mi) | ESE of here | earthquakes near Union County |
| Lancaster County, SC | 52 km (32 mi) | WSW of here | earthquakes near Lancaster County |
| York County, SC | 53 km (33 mi) | S of here | earthquakes near York 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.
- 1.9 19 km NW of Winnsboro, South Carolina
- 1.9 11 km N of Irmo, South Carolina
- 2.4 18 km NW of Winnsboro, 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
- The official USGS event page — the source of record for every value above
- Did you feel it? Report it to USGS — reports go to USGS, not to us
- ShakeMap for this event, when USGS has produced one
QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.