QuakeIndex

Earthquake · reviewed by a seismologist

M 1.5md

1 km NW of Huntsville, Tennessee

· 20 km deep · released about 5.7 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Loudon County 6 kmRoane County 22 kmBlount County 35 kmMonroe County 38 kmAnderson County 38 kmKnox County 39 kmMcMinn County 50 kmMorgan County 50 kmMeigs County 56 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 1.5 (md)
Depth
20 km below the surface
Felt
no reports yet
Nearest
Loudon County, 6 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2959 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

How big was it?

This earthquake released about 5.7 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,600,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,900,000× the energy of this one
  3. Around the size people start to feel M 3.0 170× the energy of this one
  4. This earthquake M 1.5 about 5.7 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 35.7857, -84.2902. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Loudon County, TN 6 km (4 mi) NNE of here earthquakes near Loudon County
Roane County, TN 22 km (14 mi) ESE of here earthquakes near Roane County
Blount County, TN 35 km (22 mi) WNW of here earthquakes near Blount County
Monroe County, TN 38 km (23 mi) N of here earthquakes near Monroe County
Anderson County, TN 38 km (23 mi) SSW of here earthquakes near Anderson County
Knox County, TN 39 km (24 mi) SW of here earthquakes near Knox County

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

Aftershocks so far

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

  1. 2.0 2 km WNW of Greenback, Tennessee
  2. 1.8 3 km ENE of Madisonville, Tennessee
  3. 2.2 5 km S of Sweetwater, Tennessee
  4. 1.6 7 km ESE of Vonore, Tennessee
  5. 2.0 7 km SSE of Rockwood, Tennessee
  6. 2.4 7 km E of Tellico Plains, Tennessee
  7. 2.3 1 km ENE of Maryville, Tennessee
  8. 2.6 3 km ENE of Philadelphia, Tennessee
  9. 2.5 3 km WSW of Petros, Tennessee
  10. 2.6 7 km WNW of Farragut, Tennessee
  11. 2.1 12 km NNE of Decatur, Tennessee
  12. 1.9 4 km SSW of Maryville, Tennessee
  13. 2.1 3 km NNE of Athens, Tennessee
  14. 2.1 11 km NW of Huntsville, Tennessee
  15. 1.8 1 km WNW of Eagleton Village, Tennessee

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.