Earthquake · reviewed by a seismologist
M 2.5md
3 km SW of Old Washington, Kentucky
- When
- Magnitude
- M 2.5 (md)
- Depth
- 15 km below the surface
- Felt
- 4 reports · strongest reported intensity III
- Nearest
- Mason County, 1 km ESE
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 911 days ago
This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 4 people have reported feeling it to USGS.
How big was it?
This earthquake released about 180 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.5 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 86,000× the energy of this one
- Magna, Utah 2020 M 5.7 61,000× the energy of this one
- Around the size people start to feel M 3.0 5.4× the energy of this one
- This earthquake M 2.5 about 180 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 38.5967, -83.8348. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction | |
|---|---|---|---|
| Mason County, KY | 1 km (0 mi) | WNW of here | earthquakes near Mason County |
| Robertson County, KY | 22 km (14 mi) | ENE of here | earthquakes near Robertson County |
| Bracken County, KY | 26 km (16 mi) | ESE of here | earthquakes near Bracken County |
| Fleming County, KY | 28 km (17 mi) | NNW of here | earthquakes near Fleming County |
| Nicholas County, KY | 33 km (21 mi) | NNE of here | earthquakes near Nicholas County |
| Brown County, OH | 37 km (23 mi) | S of here | earthquakes near Brown County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
6 earthquakes have been recorded within 50 km since this one.
- 1.7 15 km E of Flemingsburg, Kentucky
- 2.2 2 km SSE of Concord, Kentucky
- 2.2 7 km WSW of Vanceburg, Kentucky
- 2.4 8 km SSE of Flemingsburg, Kentucky
- 2.4 6 km SSE of Georgetown, Ohio
- 2.2 3 km SSW of Bentonville, Ohio
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.