QuakeIndex

Earthquake · reviewed by a seismologist

M 2.0md

4 km ESE of Huntsville, Tennessee

· 19 km deep · released about 29 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Loudon County 7 kmRoane County 28 kmBlount County 29 kmMonroe County 34 kmKnox County 38 kmAnderson County 41 kmMcMinn County 50 kmMorgan County 56 kmGraham County 58 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 2.0 (md)
Depth
19 km below the surface
Felt
no reports yet
Nearest
Loudon County, 7 km WSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2473 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 29 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.0 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 520,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 370,000× the energy of this one
  3. Around the size people start to feel M 3.0 33× the energy of this one
  4. This earthquake M 2.0 about 29 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 35.7533, -84.2378. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Loudon County, TN 7 km (4 mi) ENE of here earthquakes near Loudon County
Roane County, TN 28 km (17 mi) ESE of here earthquakes near Roane County
Blount County, TN 29 km (18 mi) WNW of here earthquakes near Blount County
Monroe County, TN 34 km (21 mi) N of here earthquakes near Monroe County
Knox County, TN 38 km (24 mi) SW of here earthquakes near Knox County
Anderson County, TN 41 km (25 mi) S of here earthquakes near Anderson County

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

Aftershocks so far

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

  1. 1.7 5 km S of Tellico Plains, Tennessee
  2. 2.2 5 km W of Seymour, Tennessee
  3. 1.6 5 km E of Sweetwater, Tennessee
  4. 1.8 4 km E of Niota, Tennessee
  5. 2.6 7 km WSW of Knoxville, Tennessee
  6. 1.5 11 km E of Kingston, Tennessee
  7. 1.8 11 km E of Kingston, Tennessee
  8. 1.9 Tennessee
  9. 2.0 2 km ESE of Friendsville, Tennessee
  10. 1.6 1 km W of Madisonville, Tennessee
  11. 1.7 5 km ENE of Sweetwater, Tennessee
  12. 2.2 3 km W of Maryville, Tennessee
  13. 2.0 7 km WSW of Townsend, Tennessee
  14. 1.5 15 km ENE of Tellico Plains, Tennessee
  15. 2.0 2 km S of Maryville, 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.

For this area

The largest earthquake within 50 km in our catalogue was M 4.4 on 2018-12-12 — it released about 4,100 times the energy of this one.

From the QuakeIndex catalogue, built from the USGS FDSN event service.

On USGS

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