Earthquake · reviewed by a seismologist
M 2.3md
11 km NNE of Salem, Arkansas
- When
- Magnitude
- M 2.3 (md)
- Depth
- 15 km below the surface
- Felt
- 2 reports · strongest reported intensity I
- Nearest
- Fulton County, 10 km SSW
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 334 days ago
This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 2 people have reported feeling it to USGS.
How big was it?
This earthquake released about 98 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.3 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 150,000× the energy of this one
- Magna, Utah 2020 M 5.7 110,000× the energy of this one
- Around the size people start to feel M 3.0 9.8× the energy of this one
- This earthquake M 2.3 about 98 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 36.4692, -91.7868. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction | |
|---|---|---|---|
| Fulton County, AR | 10 km (6 mi) | NNE of here | earthquakes near Fulton County |
| Howell County, MO | 35 km (22 mi) | SSE of here | earthquakes near Howell County |
| Oregon County, MO | 42 km (26 mi) | SW of here | earthquakes near Oregon County |
| Izard County, AR | 43 km (27 mi) | NNE of here | earthquakes near Izard County |
| Sharp County, AR | 43 km (27 mi) | NW of here | earthquakes near Sharp County |
| Baxter County, AR | 53 km (33 mi) | ENE of here | earthquakes near Baxter County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
4 earthquakes have been recorded within 50 km since this one.
- 1.9 9 km SW of Koshkonong, Missouri
- 1.8 9 km ESE of Ash Flat, Arkansas
- 2.0 8 km ESE of Ash Flat, Arkansas
- 1.9 10 km NNE of Salem, Arkansas
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.