Earthquake · reviewed by a seismologist
M 1.9md
19 km NW of Winnsboro, South Carolina
- When
- Magnitude
- M 1.9 (md)
- Depth
- 10 km below the surface
- Felt
- 2 reports · strongest reported intensity II
- Nearest
- Fairfield County, 15 km SE
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 111 days ago
This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 2 people have reported feeling it to USGS.
How big was it?
This earthquake released about 21 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.9 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 710,000× the energy of this one
- Magna, Utah 2020 M 5.7 500,000× the energy of this one
- Around the size people start to feel M 3.0 45× the energy of this one
- This earthquake M 1.9 about 21 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 34.4825, -81.2565. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction | |
|---|---|---|---|
| Fairfield County, SC | 15 km (10 mi) | NW of here | earthquakes near Fairfield County |
| Chester County, SC | 25 km (15 mi) | SSW of here | earthquakes near Chester County |
| Newberry County, SC | 38 km (24 mi) | NE of here | earthquakes near Newberry County |
| Union County, SC | 40 km (25 mi) | SE of here | earthquakes near Union County |
| York County, SC | 55 km (34 mi) | S of here | earthquakes near York County |
| Lancaster County, SC | 55 km (34 mi) | WSW of here | earthquakes near Lancaster County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
1 earthquake has been recorded within 50 km since this one.
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.