QuakeIndex

Earthquake · reviewed by a seismologist

M 2.2md

Earthquake near Trenton, GA

USGS: 0 km NNE of Trenton, Georgia

31 km (19 mi) SW of Chattanooga, TN

10:27 am EDT, Jul 15, 2018 · · 14 km deep · released about 60 lb of TNT

Every earthquake near Trenton Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Dade County 3 kmWalker County 24 kmMarion County 29 kmCatoosa County 34 kmHamilton County 42 kmJackson County 45 kmChattooga County 47 kmWhitfield County 50 kmDeKalb County 54 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
10:27 am EDT on 15 July 2018 ()
Where
in Trenton, GA · earthquakes near Trenton
Magnitude
M 2.2 (md)
Depth
14 km below the surface
Felt
no reports yet
Nearest
Dade County, 3 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3001 days ago

A magnitude 2.2 earthquake was recorded in Trenton, GA, at 10:27 am EDT on 15 July 2018 (14:27 UTC). This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

Earthquakes near other towns within 30 km: Chattanooga Valley, Lookout Mountain, Lookout Mountain, New Hope, Chickamauga, Bridgeport.

How big was it?

This earthquake released about 60 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 5.8 250,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 180,000× the energy of this one
  3. Around the size people start to feel M 3.0 16× the energy of this one
  4. This earthquake M 2.2 about 60 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 34.8795, -85.5068. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Dade County, GA 3 km (2 mi) S earthquakes near Dade County
Walker County, GA 24 km (15 mi) SE earthquakes near Walker County
Marion County, TN 29 km (18 mi) NNW earthquakes near Marion County
Catoosa County, GA 34 km (21 mi) E earthquakes near Catoosa County
Hamilton County, TN 42 km (26 mi) NE earthquakes near Hamilton County
Jackson County, AL 45 km (28 mi) WSW earthquakes near Jackson County

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

Aftershocks so far

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

  1. 2.1 11 km SW of Dalton, Georgia
  2. 1.9 1 km E of Collegedale, Tennessee
  3. 2.2 8 km SSW of Dalton, Georgia
  4. 2.1 6 km SW of Bridgeport, Alabama
  5. 2.3 4 km NE of Stevenson, Alabama
  6. 2.2 3 km ENE of East Brainerd, Tennessee
  7. 2.5 7 km ENE of Stevenson, Alabama
  8. 1.9 Alabama
  9. 2.3 8 km W of Tunnel Hill, Georgia
  10. 2.0 2 km SSE of Varnell, Georgia
  11. 2.5 6 km SSE of Sewanee, Tennessee
  12. 2.0 2 km WNW of Menlo, Georgia
  13. 2.4 2 km WNW of Menlo, Georgia
  14. 1.5 12 km E of Mentone, Alabama
  15. 2.0 8 km N of Trion, 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.