QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9md

1 km E of Collegedale, Tennessee

· 13 km deep · released about 22 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Bradley County 19 kmCatoosa County 20 kmHamilton County 20 kmWhitfield County 29 kmMurray County 39 kmWalker County 43 kmPolk County 45 kmDade County 49 kmSequatchie 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 1.9 (md)
Depth
13 km below the surface
Felt
1 report · strongest reported intensity III
Nearest
Bradley County, 19 km NE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 913 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 22 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 5.8 680,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 480,000× the energy of this one
  3. Around the size people start to feel M 3.0 43× the energy of this one
  4. This earthquake M 1.9 about 22 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 35.0533, -85.0290. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Bradley County, TN 19 km (12 mi) SW of here earthquakes near Bradley County
Catoosa County, GA 20 km (12 mi) NNE of here earthquakes near Catoosa County
Hamilton County, TN 20 km (12 mi) SE of here earthquakes near Hamilton County
Whitfield County, GA 29 km (18 mi) N of here earthquakes near Whitfield County
Murray County, GA 39 km (24 mi) NW of here earthquakes near Murray County
Walker County, GA 43 km (27 mi) NE of here earthquakes near Walker County

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

Aftershocks so far

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

  1. 2.4 10 km WNW of Resaca, Georgia
  2. 2.1 7 km ESE of Benton, Tennessee
  3. 2.0 8 km E of Benton, Tennessee
  4. 2.0 6 km WSW of Riceville, Tennessee
  5. 2.1 11 km ESE of Trenton, Georgia
  6. 2.1 3 km SW of Varnell, Georgia
  7. 1.9 5 km SSW of Riceville, Tennessee
  8. 2.4 4 km SW of LaFayette, Georgia
  9. 1.9 8 km WSW of Etowah, Tennessee
  10. 1.8 6 km WSW of Etowah, Tennessee
  11. 1.7 6 km W of Linwood, Georgia
  12. 2.2 2 km W of Dayton, Tennessee
  13. 1.8 6 km SW of Decatur, Tennessee
  14. 2.3 6 km WSW of Linwood, Georgia
  15. 2.0 4 km NNE of Trenton, Georgia

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.