QuakeIndex

Earthquake · reviewed by a seismologist

M 2.9md

6 km N of Bergman, Arkansas

· 5.7 km deep · released about 650 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Boone County 11 kmMarion County 31 kmTaney County 31 kmCarroll County 49 kmNewton County 55 kmOzark County 57 kmStone County 58 kmSearcy County 59 kmBaxter County 60 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 2.9 (md)
Depth
5.7 km below the surface
Felt
174 reports · strongest reported intensity IV
Nearest
Boone County, 11 km SW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2639 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 174 people have reported feeling it to USGS.

How big was it?

This earthquake released about 650 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 23,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 16,000× the energy of this one
  3. Around the size people start to feel M 3.0 1.5× the energy of this one
  4. This earthquake M 2.9 about 650 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 36.3738, -92.9950. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Boone County, AR 11 km (7 mi) NE of here earthquakes near Boone County
Marion County, AR 31 km (19 mi) WNW of here earthquakes near Marion County
Taney County, MO 31 km (19 mi) S of here earthquakes near Taney County
Carroll County, AR 49 km (30 mi) E of here earthquakes near Carroll County
Newton County, AR 55 km (34 mi) NNE of here earthquakes near Newton County
Ozark County, MO 57 km (35 mi) WSW of here earthquakes near Ozark County

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

Aftershocks so far

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

  1. 2.5 14 km E of South Lead Hill, Arkansas
  2. 2.3 14 km E of South Lead Hill, Arkansas
  3. 2.1 4 km N of Midway, Arkansas
  4. 1.7 13 km E of South Lead Hill, Arkansas
  5. 2.2 15 km WNW of Bull Shoals, Arkansas
  6. 2.3 14 km E of South Lead Hill, Arkansas
  7. 2.4 14 km E of South Lead Hill, Arkansas
  8. 2.0 13 km E of South Lead Hill, Arkansas
  9. 2.5 13 km E of South Lead Hill, Arkansas
  10. 1.9 13 km E of South Lead Hill, Arkansas
  11. 1.8 13 km ENE of South Lead Hill, Arkansas
  12. 2.2 13 km SW of Alpena, Arkansas
  13. 2.1 11 km SW of Pontiac, Missouri
  14. 2.0 Missouri-Arkansas border region
  15. 2.2 6 km E of Diamond City, 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.