QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6md

11 km SW of Rockwood, Tennessee

· 23 km deep · released about 9 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Roane County 23 kmRhea County 26 kmCumberland County 28 kmMeigs County 31 kmMorgan County 41 kmLoudon County 41 kmMcMinn County 42 kmBledsoe County 45 kmMonroe County 60 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 1.6 (md)
Depth
23 km below the surface
Felt
no reports yet
Nearest
Roane County, 23 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2326 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 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,700,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,200,000× the energy of this one
  3. Around the size people start to feel M 3.0 110× the energy of this one
  4. This earthquake M 1.6 about 9 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 35.7847, -84.7673. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Roane County, TN 23 km (14 mi) WSW of here earthquakes near Roane County
Rhea County, TN 26 km (16 mi) NE of here earthquakes near Rhea County
Cumberland County, TN 28 km (17 mi) SE of here earthquakes near Cumberland County
Meigs County, TN 31 km (19 mi) N of here earthquakes near Meigs County
Morgan County, TN 41 km (25 mi) SSW of here earthquakes near Morgan County
Loudon County, TN 41 km (26 mi) W of here earthquakes near Loudon County

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

Aftershocks so far

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

  1. 1.8 4 km SSW of Loudon, Tennessee
  2. 2.0 Tennessee
  3. 2.5 9 km WSW of Oakdale, Tennessee
  4. 2.1 2 km WNW of Niota, Tennessee
  5. 2.2 4 km ENE of Madisonville, Tennessee
  6. 2.0 1 km ENE of Dayton, Tennessee
  7. 1.8 4 km SW of Sweetwater, Tennessee
  8. 1.5 6 km NNW of Philadelphia, Tennessee
  9. 1.9 15 km WNW of Sweetwater, Tennessee
  10. 1.5 5 km E of Niota, Tennessee
  11. 2.1 1 km SW of Tellico Village, Tennessee
  12. 1.6 9 km NNW of Decatur, Tennessee
  13. 1.9 6 km NW of Lenoir City, Tennessee
  14. 2.4 6 km WNW of Niota, Tennessee
  15. 1.6 2 km ENE of Loudon, 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.