QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7md

11 km WNW of Loudon, Tennessee

· 12 km deep · released about 9.3 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Roane County 10 kmLoudon County 13 kmMonroe County 42 kmMorgan County 43 kmAnderson County 43 kmMcMinn County 44 kmMeigs County 46 kmBlount County 48 kmRhea County 50 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 1.7 (md)
Depth
12 km below the surface
Felt
no reports yet
Nearest
Roane County, 10 km NW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2518 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 9.3 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,600,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,100,000× the energy of this one
  3. Around the size people start to feel M 3.0 100× the energy of this one
  4. This earthquake M 1.7 about 9.3 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 35.7888, -84.4438. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Roane County, TN 10 km (6 mi) SE of here earthquakes near Roane County
Loudon County, TN 13 km (8 mi) WNW of here earthquakes near Loudon County
Monroe County, TN 42 km (26 mi) NNW of here earthquakes near Monroe County
Morgan County, TN 43 km (27 mi) SSE of here earthquakes near Morgan County
Anderson County, TN 43 km (27 mi) SSW of here earthquakes near Anderson County
McMinn County, TN 44 km (27 mi) NNE of here earthquakes near McMinn 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. 1.6 5 km E of Sweetwater, Tennessee
  2. 1.8 4 km E of Niota, Tennessee
  3. 2.6 7 km WSW of Knoxville, Tennessee
  4. 1.5 11 km E of Kingston, Tennessee
  5. 1.8 11 km E of Kingston, Tennessee
  6. 1.9 Tennessee
  7. 2.0 2 km ESE of Friendsville, Tennessee
  8. 1.6 1 km W of Madisonville, Tennessee
  9. 1.7 5 km ENE of Sweetwater, Tennessee
  10. 2.2 3 km W of Maryville, Tennessee
  11. 1.5 15 km ENE of Tellico Plains, Tennessee
  12. 2.0 2 km S of Maryville, Tennessee
  13. 2.0 2 km ENE of Maryville, Tennessee
  14. 2.5 2 km SSW of Eagleton Village, Tennessee
  15. 1.8 6 km S of Friendsville, 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 13,000 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.