Tennessee

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 39 km (24 mi) from the epicentre. 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: Maryville 14 km, intensity II · Farragut 26 km, intensity II · Knoxville 36 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 150 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.5 would have released about 32 times as much.

1. Mineral, Virginia 2011 M 5.8 99,000× the energy of this one
2. Magna, Utah 2020 M 5.7 70,000× the energy of this one
3. Around the size people start to feel M 3.0 6.2× the energy of this one
4. This earthquake M 2.5 about 150 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 35.6637, -84.0738. Map © OpenStreetMap contributors.

Nearby places

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

Aftershocks so far

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

1. 2.0 0 km WSW of Alcoa, Tennessee 14:33 UTC
2. 1.8 5 km NNE of Niota, Tennessee 11:01 UTC
3. 2.0 5 km S of Englewood, Tennessee 03:18 UTC
4. 1.7 2 km SSE of Philadelphia, Tennessee 10:37 UTC
5. 1.9 3 km N of Madisonville, Tennessee 07:22 UTC
6. 1.8 11 km SW of Tellico Plains, Tennessee 23:35 UTC
7. 1.6 7 km W of Tellico Plains, Tennessee 17:12 UTC
8. 1.9 11 km SE of Tellico Plains, Tennessee 18:31 UTC
9. 2.0 5 km NW of Madisonville, Tennessee 21:18 UTC
10. 2.2 11 km SE of Townsend, Tennessee 10:56 UTC
11. 1.6 6 km E of Oak Ridge, Tennessee 17:14 UTC
12. 1.8 3 km W of Maryville, Tennessee 04:35 UTC
13. 2.0 14 km SE of Vonore, Tennessee 18:53 UTC
14. 1.6 5 km NNE of Greenback, Tennessee 23:29 UTC
15. 2.1 16 km WNW of Bryson City, North Carolina 07:37 UTC

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of 09:21 UTC. 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.