mine collapse · reviewed by a seismologist
M 2.2md
15 km W of Rock Creek, Alabama
- When
- Magnitude
- M 2.2 (md)
- Depth
- 0.0 km below the surface
- Felt
- 3 reports · strongest reported intensity II
- Nearest
- Tuscaloosa County, 33 km SW
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 189 days ago
This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 3 people have reported feeling it to USGS.
USGS catalogues this as mine collapse, not an earthquake.
How big was it?
This earthquake released about 62 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.2 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 240,000× the energy of this one
- Magna, Utah 2020 M 5.7 170,000× the energy of this one
- Around the size people start to feel M 3.0 15× the energy of this one
- This earthquake M 2.2 about 62 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 33.4718, -87.2463. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction | |
|---|---|---|---|
| Tuscaloosa County, AL | 33 km (20 mi) | NE of here | earthquakes near Tuscaloosa County |
| Jefferson County, AL | 34 km (21 mi) | WSW of here | earthquakes near Jefferson County |
| Walker County, AL | 36 km (22 mi) | S of here | earthquakes near Walker County |
| Bibb County, AL | 52 km (32 mi) | NNW of here | earthquakes near Bibb County |
| Fayette County, AL | 55 km (34 mi) | ESE of here | earthquakes near Fayette County |
| Shelby County, AL | 59 km (37 mi) | WNW of here | earthquakes near Shelby County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
No further earthquakes have 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.