QuakeIndex

Earthquake · reviewed by a seismologist

M 2.8md

2 km W of Pyatt, Arkansas

· 4.6 km deep · released about 400 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Marion County 18 kmBoone County 19 kmSearcy County 42 kmTaney County 47 kmNewton County 48 kmBaxter County 49 kmOzark County 58 kmCarroll County 60 kmStone County 76 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 2.8 (md)
Depth
4.6 km below the surface
Felt
146 reports · strongest reported intensity IV
Nearest
Marion County, 18 km E
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1688 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 146 people have reported feeling it to USGS.

How big was it?

This earthquake released about 400 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.

  1. Mineral, Virginia 2011 M 5.8 38,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 27,000× the energy of this one
  3. Around the size people start to feel M 3.0 2.4× the energy of this one
  4. This earthquake M 2.8 about 400 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 36.2478, -92.8773. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Marion County, AR 18 km (11 mi) W of here earthquakes near Marion County
Boone County, AR 19 km (12 mi) ESE of here earthquakes near Boone County
Searcy County, AR 42 km (26 mi) NNW of here earthquakes near Searcy County
Taney County, MO 47 km (29 mi) SSE of here earthquakes near Taney County
Newton County, AR 48 km (30 mi) NE of here earthquakes near Newton County
Baxter County, AR 49 km (31 mi) W of here earthquakes near Baxter County

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

Aftershocks so far

28 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 14 km NE of Pelsor, Arkansas
  4. 2.3 14 km NE of Pelsor, Arkansas
  5. 2.4 14 km NE of Pelsor, Arkansas
  6. 2.0 14 km ENE of South Lead Hill, Arkansas
  7. 2.2 14 km E of South Lead Hill, Arkansas
  8. 1.9 13 km ENE of South Lead Hill, Arkansas
  9. 2.4 14 km E of South Lead Hill, Arkansas
  10. 1.9 14 km E of South Lead Hill, Arkansas
  11. 2.2 15 km WNW of Bull Shoals, Arkansas
  12. 2.5 14 km E of South Lead Hill, Arkansas
  13. 2.5 14 km E of South Lead Hill, Arkansas
  14. 2.3 14 km E of South Lead Hill, Arkansas
  15. 2.1 4 km N of Midway, 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.