QuakeIndex

Earthquake · reviewed by a seismologist

M 2.5md

5 km SE of Marshall, North Carolina

· 4.7 km deep · released about 180 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Madison County 13 kmBuncombe County 20 kmYancey County 34 kmHaywood County 38 kmUnicoi County 43 kmCocke County 46 kmHenderson County 50 kmGreene County 50 kmMitchell County 52 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 2.5 (md)
Depth
4.7 km below the surface
Felt
133 reports · strongest reported intensity IV
Nearest
Madison County, 13 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2240 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 133 people have reported feeling it to USGS.

How big was it?

This earthquake released about 180 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 86,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 61,000× the energy of this one
  3. Around the size people start to feel M 3.0 5.4× the energy of this one
  4. This earthquake M 2.5 about 180 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 35.7612, -82.6458. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Madison County, NC 13 km (8 mi) SSE of here earthquakes near Madison County
Buncombe County, NC 20 km (12 mi) NNW of here earthquakes near Buncombe County
Yancey County, NC 34 km (21 mi) WSW of here earthquakes near Yancey County
Haywood County, NC 38 km (23 mi) NE of here earthquakes near Haywood County
Unicoi County, TN 43 km (27 mi) SSW of here earthquakes near Unicoi County
Cocke County, TN 46 km (29 mi) ESE of here earthquakes near Cocke County

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

Aftershocks so far

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

  1. 2.0 8 km ENE of Weaverville, North Carolina
  2. 2.0 7 km SSW of Canton, North Carolina
  3. 1.8 8 km SSE of Clyde, North Carolina
  4. 2.0 7 km SSE of Clyde, North Carolina
  5. 2.1 8 km S of West Canton, North Carolina
  6. 1.7 8 km ENE of Weaverville, North Carolina
  7. 1.9 7 km SSE of Clyde, North Carolina
  8. 1.9 8 km E of Weaverville, North Carolina
  9. 1.9 4 km N of West Canton, North Carolina
  10. 2.1 4 km NNW of Weaverville, North Carolina
  11. 2.1 7 km NW of Weaverville, North Carolina
  12. 2.3 2 km ENE of Greeneville, Tennessee
  13. 1.8 8 km W of Bakersville, North Carolina
  14. 2.0 4 km N of West Canton, North Carolina
  15. 2.5 North Carolina

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.