QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8md

Earthquake near Farragut, TN

No earthquake was likely felt in Farragut in the 24 hours to 12:03 pm EST (17:03 UTC). The last one was M 2.4, 19 km (12 mi) W, at 1:54 am EDT on 30 October 2026, estimated intensity II (weak) in town; 3 felt reports to USGS. Every earthquake near Farragut

This page: a magnitude 1.8 earthquake was recorded 7 km (4 mi) north-northwest of Farragut, TN, at 9:28 pm EDT on 16 March 2023 (01:28 UTC), 21 km deep.

USGS: 6 km NNW of Farragut, Tennessee

22 km (13 mi) W of Knoxville, TN

9:28 pm EDT, Mar 16, 2023 · · 21 km deep · released about 17 lb of TNT

10 km30 km60 km120 km N Anderson County 20 kmKnox County 23 kmLoudon County 26 kmRoane County 32 kmBlount County 37 kmMorgan County 46 kmUnion County 49 kmCampbell County 51 kmMonroe County 55 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
9:28 pm EDT on 16 March 2023 ()
Where
7 km (4 mi) north-northwest of Farragut, TN · earthquakes near Farragut
Magnitude
M 1.8 (md)
Depth
21 km below the surface
Felt
no reports yet
Nearest
Anderson County, 20 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1335 days ago

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

At this magnitude and depth it was probably too small to be felt, even directly above it. In Farragut, 7 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: Oak Ridge, Lenoir City, Oliver Springs, Louisville, Clinton, Coalfield.

How big was it?

This earthquake released about 17 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 900,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 640,000× the energy of this one
  3. Around the size people start to feel M 3.0 57× the energy of this one
  4. This earthquake M 1.8 about 17 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 35.9412, -84.1870. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Anderson County, TN 20 km (12 mi) N earthquakes near Anderson County
Knox County, TN 23 km (14 mi) ENE earthquakes near Knox County
Loudon County, TN 26 km (16 mi) SSW earthquakes near Loudon County
Roane County, TN 32 km (20 mi) WSW earthquakes near Roane County
Blount County, TN 37 km (23 mi) SE earthquakes near Blount County
Morgan County, TN 46 km (29 mi) WNW earthquakes near Morgan County

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

Aftershocks so far

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

  1. 1.6 7 km WSW of Tellico Village, Tennessee
  2. 2.1 8 km ENE of Seymour, Tennessee
  3. 2.0 6 km SSE of Vonore, Tennessee
  4. 1.7 7 km ESE of Sweetwater, Tennessee
  5. 1.8 7 km ESE of Sweetwater, Tennessee
  6. 1.8 5 km S of Louisville, Tennessee
  7. 1.8 6 km SSE of Sweetwater, Tennessee
  8. 2.3 6 km SW of Maryville, Tennessee
  9. 1.5 6 km SSW of Louisville, Tennessee
  10. 1.8 2 km NE of Greenback, Tennessee
  11. 1.9 2 km NE of Greenback, Tennessee
  12. 2.3 2 km NE of Greenback, Tennessee
  13. 2.1 6 km E of Friendsville, Tennessee
  14. 1.7 6 km SSE of Friendsville, Tennessee
  15. 1.8 4 km SSW of Tellico Village, 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.