QuakeIndex

Earthquake · reviewed by a seismologist

M 2.2md

6 km S of Allisonia, Virginia

· 22 km deep · released about 58 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Carroll County 16 kmPulaski County 21 kmGalax city 28 kmWythe County 31 kmRadford city 31 kmFloyd County 35 kmBland County 45 kmMontgomery County 45 kmPatrick County 47 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 2.2 (md)
Depth
22 km below the surface
Felt
2 reports · strongest reported intensity II
Nearest
Carroll County, 16 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2192 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 2 people have reported feeling it to USGS.

How big was it?

This earthquake released about 58 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.

  1. Mineral, Virginia 2011 M 5.8 260,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 180,000× the energy of this one
  3. Around the size people start to feel M 3.0 16× the energy of this one
  4. This earthquake M 2.2 about 58 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 36.8770, -80.7380. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Carroll County, VA 16 km (10 mi) N of here earthquakes near Carroll County
Pulaski County, VA 21 km (13 mi) S of here earthquakes near Pulaski County
Galax city, VA 28 km (18 mi) NNE of here earthquakes near Galax city
Wythe County, VA 31 km (19 mi) E of here earthquakes near Wythe County
Radford city, VA 31 km (19 mi) SSW of here earthquakes near Radford city
Floyd County, VA 35 km (22 mi) W of here earthquakes near Floyd County

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

Aftershocks so far

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

  1. 2.2 9 km ESE of Independence, Virginia
  2. 2.1 4 km WSW of Lowgap, North Carolina
  3. 1.5 8 km W of Lowgap, North Carolina
  4. 2.3 8 km W of Lowgap, North Carolina
  5. 2.6 Virginia-North Carolina border region
  6. 2.7 5 km S of Hillsville, Virginia
  7. 2.6 Virginia-North Carolina border region
  8. 2.8 10 km S of Narrows, Virginia
  9. 2.3 9 km N of Independence, Virginia
  10. 2.0 9 km N of Independence, Virginia

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.