QuakeIndex

Earthquake · reviewed by a seismologist

M 2.3md

0 km WSW of Maryville, Tennessee

· 0.6 km deep · released about 85 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Blount County 9 kmKnox County 27 kmLoudon County 30 kmSevier County 41 kmMonroe County 42 kmAnderson County 45 kmGraham County 47 kmRoane County 50 kmSwain County 51 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 2.3 (md)
Depth
0.6 km below the surface
Felt
43 reports · strongest reported intensity V
Nearest
Blount County, 9 km SE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2441 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 43 people have reported feeling it to USGS.

How big was it?

This earthquake released about 85 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.3 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 180,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 130,000× the energy of this one
  3. Around the size people start to feel M 3.0 11× the energy of this one
  4. This earthquake M 2.3 about 85 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 35.7528, -83.9797. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Blount County, TN 9 km (5 mi) NW of here earthquakes near Blount County
Knox County, TN 27 km (17 mi) S of here earthquakes near Knox County
Loudon County, TN 30 km (19 mi) E of here earthquakes near Loudon County
Sevier County, TN 41 km (26 mi) W of here earthquakes near Sevier County
Monroe County, TN 42 km (26 mi) NE of here earthquakes near Monroe County
Anderson County, TN 45 km (28 mi) SSE of here earthquakes near Anderson County

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

Aftershocks so far

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

  1. 2.4 4 km WSW of Tellico Village, TN
  2. 2.0 7 km NE of Rockford, Tennessee
  3. 2.3 4 km N of Sweetwater, Tennessee
  4. 2.4 19 km W of Lake Santeetlah, North Carolina
  5. 2.0 10 km ENE of Kingston, Tennessee
  6. 1.8 6 km NW of Mascot, Tennessee
  7. 1.6 8 km N of Madisonville, Tennessee
  8. 1.6 3 km NE of Greenback, Tennessee
  9. 1.7 5 km E of Greenback, Tennessee
  10. 1.9 2 km S of Knoxville, Tennessee
  11. 2.0 3 km WNW of Madisonville, Tennessee
  12. 2.2 4 km E of Maryville, Tennessee
  13. 2.1 6 km WNW of Vonore, Tennessee
  14. 2.0 4 km ESE of Huntsville, Tennessee
  15. 2.2 5 km ENE of Wildwood, 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.