QuakeIndex

Earthquake · reviewed by a seismologist

M 3.6mw

6 km NNE of Bergman, Arkansas

· 5.9 km deep · released about 3.8 tons of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Boone County 11 kmMarion County 30 kmTaney County 31 kmCarroll County 50 kmNewton County 56 kmOzark County 56 kmStone County 59 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 3.6 (mw)
Depth
5.9 km below the surface
Felt
781 reports · strongest reported intensity V
Measured shaking
intensity IV (ShakeMap)
Nearest
Boone County, 11 km SW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3326 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 781 people have reported feeling it to USGS.

How big was it?

This earthquake released about 3.8 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.6 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 45,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 2,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 1,400× the energy of this one
  4. This earthquake M 3.6 about 3.8 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 7.9× more

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 36.3760, -92.9895. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Boone County, AR 11 km (7 mi) NE of here earthquakes near Boone County
Marion County, AR 30 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 50 km (31 mi) E of here earthquakes near Carroll County
Newton County, AR 56 km (35 mi) NNE of here earthquakes near Newton County
Ozark County, MO 56 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. 1.9 13 km E of South Lead Hill, Arkansas
  2. 1.8 13 km ENE of South Lead Hill, Arkansas
  3. 2.2 13 km SW of Alpena, Arkansas
  4. 2.1 11 km SW of Pontiac, Missouri
  5. 2.0 Missouri-Arkansas border region
  6. 2.2 6 km E of Diamond City, Arkansas
  7. 1.6 6 km E of Diamond City, Arkansas
  8. 2.8 2 km W of Pyatt, Arkansas
  9. 1.9 1 km S of Yellville, Arkansas
  10. 2.4 6 km E of Diamond City, Arkansas
  11. 2.2 6 km E of Diamond City, Arkansas
  12. 2.0 7 km E of Diamond City, Arkansas
  13. 2.4 10 km ESE of Everton, Arkansas
  14. 2.3 4 km W of South Lead Hill, Arkansas
  15. 2.0 3 km S of Sundown, 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

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