QuakeIndex

Earthquake · reviewed by a seismologist

M 2.5md

0 km WNW of Collegedale, Tennessee

· 16 km deep · released about 160 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Hamilton County 18 kmCatoosa County 19 kmBradley County 21 kmWhitfield County 29 kmMurray County 41 kmWalker County 42 kmDade County 47 kmPolk County 47 kmSequatchie County 48 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 2.5 (md)
Depth
16 km below the surface
Felt
3 reports · strongest reported intensity III
Nearest
Hamilton County, 18 km NW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3389 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 3 people have reported feeling it to USGS.

How big was it?

This earthquake released about 160 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 92,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 65,000× the energy of this one
  3. Around the size people start to feel M 3.0 5.8× the energy of this one
  4. This earthquake M 2.5 about 160 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 35.0548, -85.0553. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Hamilton County, TN 18 km (11 mi) SE of here earthquakes near Hamilton County
Catoosa County, GA 19 km (12 mi) NNE of here earthquakes near Catoosa County
Bradley County, TN 21 km (13 mi) WSW of here earthquakes near Bradley County
Whitfield County, GA 29 km (18 mi) NNW of here earthquakes near Whitfield County
Murray County, GA 41 km (25 mi) NW of here earthquakes near Murray County
Walker County, GA 42 km (26 mi) NNE of here earthquakes near Walker County

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

Aftershocks so far

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

  1. 2.1 11 km SSW of Benton, Tennessee
  2. 2.2 11 km SSW of Benton, Tennessee
  3. 2.2 7 km SE of Dayton, Tennessee
  4. 2.5 9 km SW of Wildwood Lake, TN
  5. 1.5 8.3 km NE of Wildwood Lake, TN
  6. 2.3 4 km NNW of Flat Top Mountain, Tennessee
  7. 2.2 5 km WSW of Chickamauga, Georgia
  8. 2.4 7 km N of Benton, Tennessee
  9. 2.3 2 km WSW of Indian Springs, Georgia
  10. 2.5 5 km S of Tunnel Hill, Georgia
  11. 2.7 6 km WSW of Chickamauga, Georgia
  12. 2.0 5 km E of East Cleveland, Tennessee
  13. 2.2 10 km SSW of Benton, Tennessee
  14. 1.6 5 km WNW of Varnell, Georgia
  15. 1.9 5 km NW of Varnell, 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.