QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1md

7 km ENE of Midway, Arkansas

· 5.2 km deep · released about 40 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Baxter County 15 kmOzark County 28 kmMarion County 31 kmFulton County 51 kmIzard County 55 kmHowell County 60 kmDouglas County 61 kmBoone County 63 kmSearcy County 63 km
Distance rings around the epicentre, with the nearest towns at their true direction and later quakes as coloured dots. Not a shaking map — see the USGS ShakeMap for that.
When
Magnitude
M 2.1 (md)
Depth
5.2 km below the surface
Felt
3 reports · strongest reported intensity II
Nearest
Baxter County, 15 km SSE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1736 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.

How big was it?

This earthquake released about 40 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.1 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 380,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 270,000× the energy of this one
  3. Around the size people start to feel M 3.0 24× the energy of this one
  4. This earthquake M 2.1 about 40 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 36.4083, -92.3845. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Baxter County, AR 15 km (9 mi) NNW of here earthquakes near Baxter County
Ozark County, MO 28 km (17 mi) SSE of here earthquakes near Ozark County
Marion County, AR 31 km (19 mi) ENE of here earthquakes near Marion County
Fulton County, AR 51 km (31 mi) W of here earthquakes near Fulton County
Izard County, AR 55 km (34 mi) NW of here earthquakes near Izard County
Howell County, MO 60 km (37 mi) SW of here earthquakes near Howell County

Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.

Aftershocks so far

26 earthquakes have been recorded within 50 km since this one.

  1. 2.4 4 km E of Diamond City, Arkansas
  2. 2.1 6 km ESE of Pontiac, Missouri
  3. 2.2 2 km WSW of Gainesville, Missouri
  4. 2.0 14 km ENE of South Lead Hill, Arkansas
  5. 2.2 14 km E of South Lead Hill, Arkansas
  6. 1.9 13 km ENE of South Lead Hill, Arkansas
  7. 2.4 14 km E of South Lead Hill, Arkansas
  8. 1.9 14 km E of South Lead Hill, Arkansas
  9. 2.2 15 km WNW of Bull Shoals, Arkansas
  10. 2.5 14 km E of South Lead Hill, Arkansas
  11. 2.5 14 km E of South Lead Hill, Arkansas
  12. 2.3 14 km E of South Lead Hill, Arkansas
  13. 2.1 4 km N of Midway, Arkansas
  14. 1.7 13 km E of South Lead Hill, Arkansas
  15. 2.2 15 km WNW of Bull Shoals, 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

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.