Earthquake · reviewed by a seismologist
M 1.8md
Earthquake near Madisonville, TN
No earthquake was likely felt in Madisonville in the 24 hours to 6:14 am EST (11:14 UTC). The last one was M 1.9, 14 km (8 mi) NNE, at 6:50 am EDT on 12 October 2026, estimated intensity II (weak) in town. Every earthquake near Madisonville
This page: a magnitude 1.8 earthquake was recorded 10 km (6 mi) south-southwest of Madisonville, TN, at 3:15 am EDT on 14 April 2024 (07:15 UTC), 16 km deep.
USGS: 8 km E of Englewood, Tennessee
72 km (45 mi) SW of Knoxville, TN · 51 km (32 mi) ENE of Cleveland, TN
- When
- 3:15 am EDT on 14 April 2024 ()
- Where
- 10 km (6 mi) south-southwest of Madisonville, TN · earthquakes near Madisonville
- Magnitude
- M 1.8 (md)
- Depth
- 16 km below the surface
- Felt
- no reports yet
- Nearest
- Monroe County, 14 km E
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 940 days ago
Earthquake alerts for Madisonville, TN
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Alerts are on for .
Not a warning. An alert comes after USGS publishes a quake, usually minutes after the shaking. For early warning use ShakeAlert, through your phone's Wireless Emergency Alerts or the MyShake app.
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 1 km (1 mi) from the epicentre. In Madisonville, 10 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: Etowah, Athens, Sweetwater, Vonore.
How big was it?
This earthquake released about 14 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 1,100,000× the energy of this one
- Magna, Utah 2020 M 5.7 790,000× the energy of this one
- Around the size people start to feel M 3.0 70× the energy of this one
- This earthquake M 1.8 about 14 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
The largest earthquake within 50 km since 2016 was M 4.4 on 2018-12-12 — about 8,800 times the energy of this one.
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 35.4318, -84.3978. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Monroe County, TN | 14 km (8 mi) | E | earthquakes near Monroe County |
| McMinn County, TN | 20 km (13 mi) | W | earthquakes near McMinn County |
| Loudon County, TN | 35 km (21 mi) | NNE | earthquakes near Loudon County |
| Polk County, TN | 38 km (24 mi) | SSW | earthquakes near Polk County |
| Meigs County, TN | 39 km (24 mi) | WNW | earthquakes near Meigs County |
| Cherokee County, NC | 45 km (28 mi) | SE | earthquakes near Cherokee County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
57 earthquakes have been recorded within 50 km since this one.
- 2.2 6 km SSE of Vonore, Tennessee
- 2.2 12 km S of Tellico Plains, Tennessee
- 2.3 7 km SSE of Charleston, Tennessee
- 2.4 4 km E of Athens, Tennessee
- 1.9 20 km WNW of Lake Santeetlah, North Carolina
- 2.2 20 km WNW of Lake Santeetlah, North Carolina
- 2.6 2 km E of Greenback, Tennessee
- 1.8 2 km S of Niota, Tennessee
- 2.1 6 km NNE of Hopewell, Tennessee
- 1.8 13 km ESE of Tellico Plains, Tennessee
- 2.1 0 km S of Loudon, Tennessee
- 1.9 2 km NE of Niota, Tennessee
- 4.1 21 km SE of Greenback, Tennessee
- 2.0 5 km NE of Tellico Plains, Tennessee
- 1.6 6 km NW 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
- The official USGS event page — the source of record for every value above
- Did you feel it? Report it to USGS — reports go to USGS, not to us
- ShakeMap for this event, when USGS has produced one
QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.