QuakeIndex

Earthquake · reviewed by a seismologist

M 2.6md

Earthquake near Lexington, KY

No earthquake was likely felt in Lexington in the 24 hours to 4:30 pm EST (21:30 UTC). The last one was M 3.1, 36 km (23 mi) S, at 12:47 pm EST on 28 December 2025, estimated intensity III (weak) in town; 405 felt reports to USGS. Every earthquake near Lexington

This page: a magnitude 2.6 earthquake was recorded 30 km (19 mi) south-southwest of Lexington, KY, at 11:37 pm EST on 20 January 2018 (04:37 UTC), 11 km deep. 41 people have reported feeling it to USGS.

USGS: 8 km SSE of High Bridge, Kentucky

36 km (22 mi) SSW of Lexington-Fayette, KY

11:37 pm EST, Jan 20, 2018 · · 11 km deep · released about 230 lb of TNT

10 km30 km60 km120 km N Jessamine County 15 kmGarrard County 18 kmMercer County 20 kmBoyle County 24 kmWoodford County 33 kmLincoln County 33 kmMadison County 34 kmFayette County 36 kmAnderson County 40 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
11:37 pm EST on 20 January 2018 ()
Where
30 km (19 mi) south-southwest of Lexington, KY · earthquakes near Lexington
Kentucky today
every earthquake in Kentucky in the last 24 hours
Magnitude
M 2.6 (md)
Depth
11 km below the surface
Felt
41 reports · strongest reported intensity IV
Nearest
Jessamine County, 15 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3139 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

At this magnitude and depth, people at rest would likely notice it out to about 49 km (30 mi) from the epicentre. In Lexington, 30 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.

Likely felt in: Lexington 30 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 230 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 65,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 46,000× the energy of this one
  3. Around the size people start to feel M 3.0 4.1× the energy of this one
  4. This earthquake M 2.6 about 230 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 37.7582, -84.6630. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Jessamine County, KY 15 km (9 mi) NNE earthquakes near Jessamine County
Garrard County, KY 18 km (11 mi) SE earthquakes near Garrard County
Mercer County, KY 20 km (12 mi) WNW earthquakes near Mercer County
Boyle County, KY 24 km (15 mi) SW earthquakes near Boyle County
Woodford County, KY 33 km (20 mi) NNW earthquakes near Woodford County
Lincoln County, KY 33 km (21 mi) S earthquakes near Lincoln County

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

Aftershocks so far

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

  1. 3.1 11 km ENE of Lancaster, Kentucky
  2. 2.8 11 km SE of High Bridge, Kentucky
  3. 2.6 11 km ENE of Lancaster, Kentucky
  4. 2.6 4 km E of Burgin, Kentucky

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.