Earthquake · reviewed by a seismologist
M 2.6md
Earthquake near Mascot, TN
No earthquake was likely felt in Mascot in the 24 hours to 6:51 pm EST (23:51 UTC). The last one was M 2.0, 5 km (3 mi) WNW, at 5:49 am EDT on 6 July 2026, estimated intensity II (weak) in town. Every earthquake near Mascot
This page: a magnitude 2.6 earthquake was recorded 3 km (2 mi) south-southeast of Mascot, TN, at 11:11 pm EDT on 4 August 2019 (03:11 UTC), 7.4 km deep. 31 people have reported feeling it to USGS.
USGS: 2 km SSE of Mascot, Tennessee
20 km (13 mi) ENE of Knoxville, TN
- When
- 11:11 pm EDT on 4 August 2019 ()
- Where
- 3 km (2 mi) south-southeast of Mascot, TN · earthquakes near Mascot
- Magnitude
- M 2.6 (md)
- Depth
- 7.4 km below the surface
- Felt
- 31 reports · strongest reported intensity III
- Nearest
- Knox County, 19 km WSW
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 2580 days ago
Earthquake alerts for Mascot, 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 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 51 km (32 mi) from the epicentre. In Mascot, 3 km away, the estimate is intensity III (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: Mascot 3 km, intensity III · Seymour 17 km, intensity III · Knoxville 18 km, intensity III · Sevierville 25 km, intensity II · Maryville 38 km, intensity II · Farragut 41 km, intensity II · Fincastle 50 km, intensity II. Estimated for each town centre; each link is that town's own record.
How big was it?
This earthquake released about 240 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.
- Mineral, Virginia 2011 M 5.8 63,000× the energy of this one
- Magna, Utah 2020 M 5.7 45,000× the energy of this one
- Around the size people start to feel M 3.0 4× the energy of this one
- This earthquake M 2.6 about 240 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 36.0385, -83.7395. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Knox County, TN | 19 km (12 mi) | WSW | earthquakes near Knox County |
| Jefferson County, TN | 27 km (17 mi) | E | earthquakes near Jefferson County |
| Union County, TN | 29 km (18 mi) | NNW | earthquakes near Union County |
| Grainger County, TN | 34 km (21 mi) | NE | earthquakes near Grainger County |
| Sevier County, TN | 34 km (21 mi) | SE | earthquakes near Sevier County |
| Anderson County, TN | 42 km (26 mi) | WNW | earthquakes near Anderson County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
45 earthquakes have been recorded within 50 km since this one.
- 2.3 7 km N of Dandridge, Tennessee
- 2.2 6 km N of Dandridge, Tennessee
- 1.9 6 km E of Friendsville, Tennessee
- 2.4 7 km SE of Knoxville, Tennessee
- 1.9 7 km WSW of Maryville, Tennessee
- 2.2 5 km SE of Knoxville, Tennessee
- 2.0 3 km W of Knoxville, Tennessee
- 1.8 6 km NNW of Mascot, Tennessee
- 2.1 6 km NNW of Mascot, Tennessee
- 2.0 2 km WSW of Alcoa, Tennessee
- 2.3 3 km SW of Alcoa, Tennessee
- 2.2 5 km W of Seymour, Tennessee
- 2.6 7 km WSW of Knoxville, Tennessee
- 2.0 2 km ESE of Friendsville, Tennessee
- 2.2 3 km W of Maryville, 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.