QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9md

9 km WSW of Mascot, Tennessee

· 15 km deep · released about 21 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Knox County 10 kmUnion County 29 kmAnderson County 34 kmJefferson County 36 kmBlount County 38 kmSevier County 38 kmGrainger County 41 kmCampbell County 51 kmLoudon 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 1.9 (md)
Depth
15 km below the surface
Felt
1 report · strongest reported intensity II
Nearest
Knox County, 10 km WSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 250 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 1 person has reported feeling it to USGS.

How big was it?

This earthquake released about 21 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 730,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 520,000× the energy of this one
  3. Around the size people start to feel M 3.0 46× the energy of this one
  4. This earthquake M 1.9 about 21 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 36.0208, -83.8365. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Knox County, TN 10 km (6 mi) ENE of here earthquakes near Knox County
Union County, TN 29 km (18 mi) S of here earthquakes near Union County
Anderson County, TN 34 km (21 mi) ESE of here earthquakes near Anderson County
Jefferson County, TN 36 km (22 mi) W of here earthquakes near Jefferson County
Blount County, TN 38 km (23 mi) NNE of here earthquakes near Blount County
Sevier County, TN 38 km (24 mi) NW of here earthquakes near Sevier County

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

Aftershocks so far

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

  1. 2.1 5 km NNE of Greenback, Tennessee
  2. 2.2 9 km S of Oak Ridge, Tennessee
  3. 2.3 1 km W of Rutledge, Tennessee
  4. 2.0 4 km WNW of Mascot, Tennessee
  5. 1.9 3 km NW of Mascot, Tennessee
  6. 1.8 0 km SE of Farragut, Tennessee
  7. 2.3 1 km S of Friendsville, Tennessee
  8. 1.8 5 km SSE of Friendsville, Tennessee
  9. 2.4 5 km SSE of Friendsville, Tennessee
  10. 1.7 4 km NE of Louisville, Tennessee
  11. 2.0 3 km WSW of Alcoa, Tennessee
  12. 2.2 3 km WSW of Alcoa, Tennessee
  13. 2.3 4 km N of Pigeon Forge, Tennessee
  14. 2.1 2 km S of Blaine, Tennessee
  15. 2.1 7 km SE of Knoxville, 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.

On USGS

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