Earthquake · reviewed by a seismologist
M 2.8md
12 km ENE of Junction City, Arkansas
- When
- Magnitude
- M 2.8 (md)
- Depth
- 14 km below the surface
- Felt
- 38 reports · strongest reported intensity V
- Nearest
- Union County, 11 km N
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 2329 days ago
This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 38 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 33.0667, -92.5995. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction | |
|---|---|---|---|
| Union County, AR | 11 km (7 mi) | S of here | earthquakes near Union County |
| Union Parish, LA | 34 km (21 mi) | NW of here | earthquakes near Union Parish |
| Claiborne Parish, LA | 45 km (28 mi) | NE of here | earthquakes near Claiborne Parish |
| Lincoln Parish, LA | 52 km (32 mi) | N of here | earthquakes near Lincoln Parish |
| Calhoun County, AR | 55 km (34 mi) | S of here | earthquakes near Calhoun County |
| Bradley County, AR | 60 km (37 mi) | SW of here | earthquakes near Bradley 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.