Earthquake · reviewed by a seismologist
M 2.2md
13 km W of Maynard, Arkansas
- When
- Magnitude
- M 2.2 (md)
- Depth
- 3.6 km below the surface
- Felt
- 8 reports · strongest reported intensity IV
- Nearest
- Randolph County, 10 km S
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 403 days ago
This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 8 people have reported feeling it to USGS.
How big was it?
This earthquake released about 64 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 5.8 230,000× 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 64 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 36.4313, -91.0418. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction | |
|---|---|---|---|
| Randolph County, AR | 10 km (6 mi) | N of here | earthquakes near Randolph County |
| Ripley County, MO | 29 km (18 mi) | SSW of here | earthquakes near Ripley County |
| Oregon County, MO | 43 km (27 mi) | SE of here | earthquakes near Oregon County |
| Lawrence County, AR | 44 km (27 mi) | N of here | earthquakes near Lawrence County |
| Sharp County, AR | 48 km (30 mi) | NE of here | earthquakes near Sharp County |
| Greene County, AR | 55 km (34 mi) | NW of here | earthquakes near Greene County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
7 earthquakes have been recorded within 50 km since this one.
- 1.8 9 km W of Maynard, Arkansas
- 2.2 4 km SSE of Maynard, Arkansas
- 2.0 4 km NW of Lynn, Arkansas
- 1.9 4 km NW of Lynn, Arkansas
- 2.1 6 km ENE of Smithville, Arkansas
- 1.7 10 km NW of Smithville, Arkansas
- 2.9 12 km WSW of Grandin, Missouri
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.