QuakeIndex

Earthquake · reviewed by a seismologist

M 2.3md

Earthquake near East Florence, AL

No earthquake was likely felt in East Florence in the 24 hours to 12:13 am CST (06:13 UTC). The last one was M 4.0, 241 km (150 mi) NW, at 12:59 pm CDT on 23 April 2026, estimated intensity II (weak) in town; 913 felt reports to USGS. Every earthquake near East Florence

This page: a magnitude 2.3 earthquake was recorded 26 km (16 mi) northeast of East Florence, AL, at 8:49 pm CDT on 5 October 2019 (01:49 UTC), 1.1 km deep. 5 people have reported feeling it to USGS.

USGS: 6 km W of Lexington, Alabama

60 km (37 mi) NW of Decatur, AL · 147 km (91 mi) SSW of Nashville-Davidson, TN

8:49 pm CDT, Oct 5, 2019 · · 1.1 km deep · released about 74 lb of TNT

10 km30 km60 km120 km N Lauderdale County 20 kmLawrence County 29 kmColbert County 44 kmLimestone County 45 kmGiles County 45 kmWayne County 46 kmLawrence County 49 kmLewis County 62 kmFranklin County 69 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
8:49 pm CDT on 5 October 2019 ()
Where
26 km (16 mi) northeast of East Florence, AL · earthquakes near East Florence
Magnitude
M 2.3 (md)
Depth
1.1 km below the surface
Felt
5 reports · strongest reported intensity II
Nearest
Lauderdale County, 20 km WSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2386 days ago

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

At this magnitude and depth, people at rest would likely notice it out to about 35 km (22 mi) from the epicentre. In East Florence, 26 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: Loretto, Rogersville, Underwood-Petersville, Florence.

How big was it?

This earthquake released about 74 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.3 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 200,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 140,000× the energy of this one
  3. Around the size people start to feel M 3.0 13× the energy of this one
  4. This earthquake M 2.3 about 74 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 34.9643, -87.4393. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Lauderdale County, AL 20 km (13 mi) WSW earthquakes near Lauderdale County
Lawrence County, TN 29 km (18 mi) N earthquakes near Lawrence County
Colbert County, AL 44 km (27 mi) SW earthquakes near Colbert County
Limestone County, AL 45 km (28 mi) ESE earthquakes near Limestone County
Giles County, TN 45 km (28 mi) NE earthquakes near Giles County
Wayne County, TN 46 km (29 mi) NW earthquakes near Wayne County

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

Aftershocks so far

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

  1. 2.5 12 km NNE of Trinity, Alabama
  2. 2.1 3 km NE of Courtland, Alabama
  3. 2.4 11 km W of Elkton, Tennessee
  4. 2.3 8 km S of Killen, Alabama
  5. 1.7 5 km NNE of Underwood-Petersville, Alabama

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.