Earthquake · reviewed by a seismologist
M 2.1md
2 km S of Blaine, Tennessee
- When
- Magnitude
- M 2.1 (md)
- Depth
- 23 km below the surface
- Felt
- no reports yet
- Nearest
- Union County, 21 km NW
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 214 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.
- Mineral, Virginia 2011 M 5.8 370,000× the energy of this one
- Magna, Utah 2020 M 5.7 260,000× the energy of this one
- Around the size people start to feel M 3.0 23× the energy of this one
- 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 36.1283, -83.7017. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction | |
|---|---|---|---|
| Union County, TN | 21 km (13 mi) | SE of here | earthquakes near Union County |
| Grainger County, TN | 24 km (15 mi) | SW of here | earthquakes near Grainger County |
| Jefferson County, TN | 25 km (16 mi) | WNW of here | earthquakes near Jefferson County |
| Knox County, TN | 26 km (16 mi) | NE of here | earthquakes near Knox County |
| Hamblen County, TN | 40 km (25 mi) | WSW of here | earthquakes near Hamblen County |
| Sevier County, TN | 41 km (26 mi) | NNW of here | earthquakes near Sevier County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
8 earthquakes have been recorded within 50 km since this one.
- 2.3 1 km W of Rutledge, Tennessee
- 2.0 4 km WNW of Mascot, Tennessee
- 1.9 3 km NW of Mascot, Tennessee
- 1.8 0 km SE of Farragut, Tennessee
- 1.7 4 km NE of Louisville, Tennessee
- 2.0 3 km WSW of Alcoa, Tennessee
- 2.2 3 km WSW of Alcoa, Tennessee
- 2.3 4 km N of Pigeon Forge, Tennessee
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.