QuakeIndex

Earthquake · reviewed by a seismologist

M 2.2md

10 km SE of Dayton, Tennessee

· 8.3 km deep · released about 62 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Meigs County 12 kmRhea County 18 kmMcMinn County 27 kmBledsoe County 31 kmBradley County 32 kmHamilton County 40 kmSequatchie County 45 kmPolk County 50 kmVan Buren County 57 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 2.2 (md)
Depth
8.3 km below the surface
Felt
no reports yet
Nearest
Meigs County, 12 km NE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2693 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 62 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.2 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 240,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 170,000× the energy of this one
  3. Around the size people start to feel M 3.0 15× the energy of this one
  4. This earthquake M 2.2 about 62 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 35.4385, -84.9190. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Meigs County, TN 12 km (8 mi) SW of here earthquakes near Meigs County
Rhea County, TN 18 km (11 mi) S of here earthquakes near Rhea County
McMinn County, TN 27 km (17 mi) W of here earthquakes near McMinn County
Bledsoe County, TN 31 km (19 mi) ESE of here earthquakes near Bledsoe County
Bradley County, TN 32 km (20 mi) N of here earthquakes near Bradley County
Hamilton County, TN 40 km (25 mi) NE of here earthquakes near Hamilton 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. 1.6 13 km E of Benton, Tennessee
  2. 1.9 7 km S of Sweetwater, Tennessee
  3. 2.8 6 km SE of Englewood, Tennessee
  4. 1.5 5 km ENE of Niota, Tennessee
  5. 3.1 4 km SSW of Crab Orchard, Tennessee
  6. 2.1 6 km NNW of Calhoun, Tennessee
  7. 1.8 5 km ENE of Lakesite, Tennessee
  8. 2.1 9 km ENE of Dayton, Tennessee
  9. 1.6 5 km E of Sweetwater, Tennessee
  10. 1.8 4 km E of Niota, Tennessee
  11. 2.1 10 km SE of Wildwood Lake, Tennessee
  12. 1.6 1 km W of Madisonville, Tennessee
  13. 2.5 5 km NNE of East Brainerd, Tennessee
  14. 1.6 11 km WNW of Sweetwater, Tennessee
  15. 2.1 7 km NNE of Benton, 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 1,900 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.