Earthquake · reviewed by a seismologist
M 2.8md
0 km WSW of Muscle Shoals, Alabama
- When
- Magnitude
- M 2.8 (md)
- Depth
- 8.2 km below the surface
- Felt
- 5 reports · strongest reported intensity III
- Nearest
- Colbert County, 12 km WSW
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 2922 days ago
This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 5 people have reported feeling it to USGS.
How big was it?
This earthquake released about 460 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.8 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 33,000× the energy of this one
- Magna, Utah 2020 M 5.7 23,000× the energy of this one
- Around the size people start to feel M 3.0 2.1× the energy of this one
- This earthquake M 2.8 about 460 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 34.7420, -87.6757. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction | |
|---|---|---|---|
| Colbert County, AL | 12 km (8 mi) | ENE of here | earthquakes near Colbert County |
| Lauderdale County, AL | 18 km (11 mi) | S of here | earthquakes near Lauderdale County |
| Franklin County, AL | 37 km (23 mi) | NNE of here | earthquakes near Franklin County |
| Lawrence County, AL | 40 km (25 mi) | NW of here | earthquakes near Lawrence County |
| Tishomingo County, MS | 51 km (32 mi) | E of here | earthquakes near Tishomingo County |
| Wayne County, TN | 57 km (36 mi) | SSE of here | earthquakes near Wayne County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
5 earthquakes have been recorded within 50 km since this one.
- 2.1 3 km NE of Courtland, Alabama
- 2.3 8 km S of Killen, Alabama
- 1.7 5 km NNE of Underwood-Petersville, Alabama
- 2.3 6 km W of Lexington, Alabama
- 2.1 7 km NNE of Iron City, 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.