QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7md

Earthquake near Benton, TN

No earthquake was likely felt in Benton in the 24 hours to 9:12 am EST (14:12 UTC). The last one was M 2.0, 17 km (11 mi) ENE, at 4:38 am EDT on 4 August 2026, estimated intensity II (weak) in town; 1 felt report to USGS. Every earthquake near Benton

This page: a magnitude 1.7 earthquake was recorded 15 km (9 mi) east of Benton, TN, at 2:22 am EDT on 12 March 2024 (06:22 UTC), 5.1 km deep.

USGS: 14 km E of Benton, Tennessee

70 km (43 mi) ENE of Chattanooga, TN · 34 km (21 mi) E of Cleveland, TN

2:22 am EDT, Mar 12, 2024 · · 5.1 km deep · released about 11 lb of TNT

10 km30 km60 km120 km N Polk County 10 kmMcMinn County 28 kmBradley County 33 kmMonroe County 36 kmFannin County 40 kmCherokee County 40 kmMeigs County 46 kmMurray County 49 kmGilmer County 56 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
2:22 am EDT on 12 March 2024 ()
Where
15 km (9 mi) east of Benton, TN · earthquakes near Benton
Magnitude
M 1.7 (md)
Depth
5.1 km below the surface
Felt
no reports yet
Nearest
Polk County, 10 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 974 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

At this magnitude and depth, people at rest would likely notice it out to about 12 km (7 mi) from the epicentre. In Benton, 15 km away, the estimate is intensity II (weak). Estimated from magnitude, depth and distance with the intensity equation USGS Did You Feel It? uses; felt reports, where there are any, are the measurement.

Earthquakes near other towns within 30 km: Etowah, McCaysville, Athens.

How big was it?

This earthquake released about 11 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,400,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 970,000× the energy of this one
  3. Around the size people start to feel M 3.0 86× the energy of this one
  4. This earthquake M 1.7 about 11 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.

For this area

No earthquake of M4 or more has been recorded within 50 km since our catalogue begins in 2016.

Before 2016, the USGS record since 1900 lists no earthquake of M5 or more within 50 km.

Since 2016: the QuakeIndex catalogue (US, M1.5+), built from the USGS FDSN event service. Before 2016: USGS ComCat, M5+ from 1900. Distances are between epicentres. This is the record, not a forecast.

Where

Epicentre 35.1935, -84.4950. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Polk County, TN 10 km (6 mi) SSW earthquakes near Polk County
McMinn County, TN 28 km (17 mi) NNW earthquakes near McMinn County
Bradley County, TN 33 km (21 mi) W earthquakes near Bradley County
Monroe County, TN 36 km (22 mi) NE earthquakes near Monroe County
Fannin County, GA 40 km (25 mi) SSE earthquakes near Fannin County
Cherokee County, NC 40 km (25 mi) E earthquakes near Cherokee County

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

Aftershocks so far

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

  1. 1.7 5 km ENE of Niota, Tennessee
  2. 1.8 6 km SW of Decatur, Tennessee
  3. 2.1 3 km NE of Niota, Tennessee
  4. 1.9 5 km SSW of Sweetwater, Tennessee
  5. 2.3 10 km ENE of Tellico Plains, Tennessee
  6. 2.4 6 km SSE of Vonore, Tennessee
  7. 1.9 5 km SSE of Vonore, Tennessee
  8. 2.2 6 km SSE of Vonore, Tennessee
  9. 2.2 12 km S of Tellico Plains, Tennessee
  10. 1.9 9 km NNW of Eton, Georgia
  11. 2.3 7 km SSE of Charleston, Tennessee
  12. 2.4 4 km E of Athens, Tennessee
  13. 2.2 10 km SSE of Dayton, Tennessee
  14. 1.9 20 km WNW of Lake Santeetlah, North Carolina
  15. 2.2 20 km WNW of Lake Santeetlah, North Carolina

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.