QuakeIndex

Earthquake · reviewed by a seismologist

M 2.2md

Earthquake near Rockwood, TN

USGS: 4 km SW of Rockwood, Tennessee

71 km (44 mi) WSW of Knoxville, TN

11:15 pm CST, Nov 14, 2018 · · 4.4 km deep · released about 69 lb of TNT

Every earthquake near Rockwood Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Roane County 17 kmCumberland County 28 kmRhea County 34 kmMorgan County 34 kmMeigs County 37 kmLoudon County 38 kmMcMinn County 47 kmBledsoe County 52 kmAnderson 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
11:15 pm CST on 14 November 2018 ()
Where
4 km (3 mi) SW of Rockwood, TN · earthquakes near Rockwood
Magnitude
M 2.2 (md)
Depth
4.4 km below the surface
Felt
no reports yet
Nearest
Roane County, 17 km E
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2867 days ago

A magnitude 2.2 earthquake was recorded 4 km (3 mi) SW of Rockwood, TN, at 11:15 pm CST on 14 November 2018 (05:15 UTC). This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

Earthquakes near other towns within 30 km: Midtown, Harriman, Kingston, Spring City, Fairfield Glade.

How big was it?

This earthquake released about 69 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 5.8 220,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 150,000× the energy of this one
  3. Around the size people start to feel M 3.0 14× the energy of this one
  4. This earthquake M 2.2 about 69 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 35.8393, -84.7167. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Roane County, TN 17 km (11 mi) E earthquakes near Roane County
Cumberland County, TN 28 km (17 mi) WNW earthquakes near Cumberland County
Rhea County, TN 34 km (21 mi) SW earthquakes near Rhea County
Morgan County, TN 34 km (21 mi) NNE earthquakes near Morgan County
Meigs County, TN 37 km (23 mi) SSW earthquakes near Meigs County
Loudon County, TN 38 km (24 mi) ESE earthquakes near Loudon County

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

Aftershocks so far

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

  1. 2.4 4 km WSW of Tellico Village, TN
  2. 2.3 4 km N of Sweetwater, Tennessee
  3. 2.0 10 km ENE of Kingston, Tennessee
  4. 1.6 8 km N of Madisonville, Tennessee
  5. 2.3 8 km E of Pikeville, Tennessee
  6. 2.5 6 km ENE of Decatur, Tennessee
  7. 2.0 3 km WNW of Madisonville, Tennessee
  8. 2.1 6 km WNW of Vonore, Tennessee
  9. 2.0 4 km ESE of Huntsville, Tennessee
  10. 2.1 2 km WNW of Tellico Village, Tennessee
  11. 1.7 6 km WSW of Tellico Village, Tennessee
  12. 1.7 11 km WNW of Loudon, Tennessee
  13. 1.9 6 km SW of Tellico Village, Tennessee
  14. 2.0 12 km NNE of Decatur, Tennessee
  15. 1.7 4 km WNW of Madisonville, 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.