QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8md

4 km SSW of Tellico Village, Tennessee

· 13 km deep · released about 15 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Loudon County 11 kmMonroe County 22 kmBlount County 32 kmRoane County 32 kmMcMinn County 40 kmKnox County 49 kmMeigs County 52 kmGraham County 52 kmAnderson County 53 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 1.8 (md)
Depth
13 km below the surface
Felt
no reports yet
Nearest
Loudon County, 11 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 741 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 15 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,000,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 730,000× the energy of this one
  3. Around the size people start to feel M 3.0 65× the energy of this one
  4. This earthquake M 1.8 about 15 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 35.6460, -84.2707. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Loudon County, TN 11 km (7 mi) SSE of here earthquakes near Loudon County
Monroe County, TN 22 km (14 mi) N of here earthquakes near Monroe County
Blount County, TN 32 km (20 mi) W of here earthquakes near Blount County
Roane County, TN 32 km (20 mi) SE of here earthquakes near Roane County
McMinn County, TN 40 km (25 mi) NE of here earthquakes near McMinn County
Knox County, TN 49 km (30 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. 1.8 0 km ESE of Knoxville, Tennessee
  2. 1.6 5 km WSW of Friendsville, Tennessee
  3. 1.7 5 km NE of Greenback, Tennessee
  4. 1.9 8 km WSW of Etowah, Tennessee
  5. 1.8 6 km WSW of Etowah, Tennessee
  6. 1.8 5 km SW of Maryville, Tennessee
  7. 2.2 10 km WNW of Philadelphia, Tennessee
  8. 2.0 6 km ENE of Niota, Tennessee
  9. 2.4 3 km WNW of Friendsville, Tennessee
  10. 1.8 3 km E of Philadelphia, Tennessee
  11. 2.2 13 km S of Midtown, Tennessee
  12. 1.6 10 km ENE of Tellico Plains, Tennessee
  13. 1.7 5 km ENE of Niota, Tennessee
  14. 2.0 3 km WNW of Huntsville, Tennessee
  15. 1.5 2 km W 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 8,200 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.