Earthquake · reviewed by a seismologist
M 1.8md
3 km NNW of Coronaca, South Carolina
- When
- Magnitude
- M 1.8 (md)
- Depth
- 0.0 km below the surface
- Felt
- 4 reports · strongest reported intensity III
- Nearest
- Greenwood County, 15 km S
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 319 days ago
This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 4 people have reported feeling it to USGS.
How big was it?
This earthquake released about 16 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.
- Mineral, Virginia 2011 M 5.8 970,000× the energy of this one
- Magna, Utah 2020 M 5.7 680,000× the energy of this one
- Around the size people start to feel M 3.0 61× the energy of this one
- This earthquake M 1.8 about 16 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 34.2872, -82.1073. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction | |
|---|---|---|---|
| Greenwood County, SC | 15 km (9 mi) | N of here | earthquakes near Greenwood County |
| Laurens County, SC | 24 km (15 mi) | SSW of here | earthquakes near Laurens County |
| Abbeville County, SC | 33 km (20 mi) | ENE of here | earthquakes near Abbeville County |
| Newberry County, SC | 47 km (29 mi) | W of here | earthquakes near Newberry County |
| Saluda County, SC | 47 km (29 mi) | NW of here | earthquakes near Saluda County |
| McCormick County, SC | 47 km (29 mi) | NNE of here | earthquakes near McCormick County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
9 earthquakes have been recorded within 50 km since this one.
- 1.9 2 km WNW of McCormick, South Carolina
- 2.1 5 km NNE of Calhoun Falls, South Carolina
- 1.8 1 km NNW of Coronaca, South Carolina
- 2.2 3 km NW of Coronaca, South Carolina
- 1.7 7 km SE of Ware Shoals, South Carolina
- 2.0 2 km N of Coronaca, South Carolina
- 2.4 3 km N of Coronaca, South Carolina
- 1.7 2 km NW of Coronaca, South Carolina
- 2.0 3 km N of Coronaca, 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.