QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7md

2 km N of Lilburn, Georgia

· 4.0 km deep · released about 11 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Gwinnett County 12 kmDeKalb County 18 kmRockdale County 31 kmFulton County 33 kmForsyth County 34 kmCobb County 39 kmBarrow County 41 kmWalton County 41 kmClayton County 47 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 1.7 (md)
Depth
4.0 km below the surface
Felt
no reports yet
Nearest
Gwinnett County, 12 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3023 days ago

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

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 1,300,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 930,000× the energy of this one
  3. Around the size people start to feel M 3.0 83× 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.

Where

Epicentre 33.9160, -84.1472. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Gwinnett County, GA 12 km (8 mi) WSW of here earthquakes near Gwinnett County
DeKalb County, GA 18 km (11 mi) NNE of here earthquakes near DeKalb County
Rockdale County, GA 31 km (20 mi) NNW of here earthquakes near Rockdale County
Fulton County, GA 33 km (20 mi) ENE of here earthquakes near Fulton County
Forsyth County, GA 34 km (21 mi) S of here earthquakes near Forsyth County
Cobb County, GA 39 km (25 mi) E of here earthquakes near Cobb County

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

Aftershocks so far

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

  1. 2.1 2 km S of Forest Park, Georgia
  2. 2.3 3 km N of Lilburn, Georgia
  3. 2.2 4 km NW of Buford, Georgia
  4. 2.3 4 km NW of Buford, Georgia
  5. 2.1 3 km N of Sugar Hill, Georgia
  6. 2.5 4 km NW of Buford, Georgia
  7. 2.1 1 km N of Lilburn, Georgia
  8. 2.2 9 km ENE of Cumming, Georgia
  9. 2.3 2 km N of Lilburn, Georgia
  10. 2.3 2 km ESE of Stockbridge, 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.