QuakeIndex

Earthquake · reviewed by a seismologist

M 2.2md

4 km ENE of Madisonville, Tennessee

· 5.2 km deep · released about 67 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Monroe County 12 kmLoudon County 22 kmMcMinn County 30 kmRoane County 39 kmBlount County 39 kmMeigs County 45 kmGraham County 49 kmCherokee County 50 kmPolk 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 2.2 (md)
Depth
5.2 km below the surface
Felt
no reports yet
Nearest
Monroe County, 12 km SSE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1361 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 67 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 5.8 230,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 160,000× the energy of this one
  3. Around the size people start to feel M 3.0 14× the energy of this one
  4. This earthquake M 2.2 about 67 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 35.5398, -84.3147. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Monroe County, TN 12 km (7 mi) NNW of here earthquakes near Monroe County
Loudon County, TN 22 km (13 mi) S of here earthquakes near Loudon County
McMinn County, TN 30 km (19 mi) ENE of here earthquakes near McMinn County
Roane County, TN 39 km (24 mi) SSE of here earthquakes near Roane County
Blount County, TN 39 km (24 mi) WSW of here earthquakes near Blount County
Meigs County, TN 45 km (28 mi) E of here earthquakes near Meigs County

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

Aftershocks so far

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

  1. 1.7 7 km SW of Maryville, Tennessee
  2. 2.1 7 km SW of Maryville, Tennessee
  3. 2.3 7 km SW of Maryville, Tennessee
  4. 2.0 0 km WSW of Alcoa, Tennessee
  5. 1.8 5 km NNE of Niota, Tennessee
  6. 2.0 5 km S of Englewood, Tennessee
  7. 1.7 2 km SSE of Philadelphia, Tennessee
  8. 1.9 3 km N of Madisonville, Tennessee
  9. 1.8 11 km SW of Tellico Plains, Tennessee
  10. 1.6 7 km W of Tellico Plains, Tennessee
  11. 1.9 11 km SE of Tellico Plains, Tennessee
  12. 2.0 5 km NW of Madisonville, Tennessee
  13. 1.8 3 km W of Maryville, Tennessee
  14. 2.0 14 km SE of Vonore, Tennessee
  15. 1.8 4 km WSW of Decatur, 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 1,800 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.