QuakeIndex

Earthquake · reviewed by a seismologist

M 2.5md

17 km WSW of Marshall, North Carolina

· 5.9 km deep · released about 160 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Madison County 19 kmHaywood County 22 kmCocke County 31 kmBuncombe County 33 kmGreene County 50 kmYancey County 53 kmJackson County 55 kmHenderson County 56 kmUnicoi County 57 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
5.9 km below the surface
Felt
7 reports · strongest reported intensity IV
Nearest
Madison County, 19 km NE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1758 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 7 people have reported feeling it to USGS.

How big was it?

This earthquake released about 160 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 95,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 68,000× the energy of this one
  3. Around the size people start to feel M 3.0 6× the energy of this one
  4. This earthquake M 2.5 about 160 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 35.7333, -82.8563. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Madison County, NC 19 km (12 mi) SW of here earthquakes near Madison County
Haywood County, NC 22 km (14 mi) NNE of here earthquakes near Haywood County
Cocke County, TN 31 km (19 mi) SE of here earthquakes near Cocke County
Buncombe County, NC 33 km (20 mi) WNW of here earthquakes near Buncombe County
Greene County, TN 50 km (31 mi) S of here earthquakes near Greene County
Yancey County, NC 53 km (33 mi) WSW of here earthquakes near Yancey County

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

Aftershocks so far

25 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. 1.7 16 km E of Cullowhee, North Carolina
  14. 2.1 10 km SSE of Pittman Center, Tennessee
  15. 2.0 4 km N of West Canton, 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.