Earthquake · reviewed by a seismologist
M 2.0md
Earthquake near Dayton, TN
USGS: 8 km NNW of Dayton, Tennessee
58 km (36 mi) NNE of Chattanooga, TN · 46 km (28 mi) NNW of Cleveland, TN
- When
- 9:39 am EDT on 17 September 2017 ()
- Where
- 8 km (5 mi) NNW of Dayton, TN · earthquakes near Dayton
- Magnitude
- M 2.0 (md)
- Depth
- 15 km below the surface
- Felt
- no reports yet
- Nearest
- Rhea County, 10 km ENE
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 3302 days ago
A magnitude 2.0 earthquake was recorded 8 km (5 mi) NNW of Dayton, TN, at 9:39 am EDT on 17 September 2017 (13:39 UTC). This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.
Earthquakes near other towns within 30 km: Graysville, Pikeville, Sale Creek, Spring City, Decatur.
How big was it?
This earthquake released about 33 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.0 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 450,000× the energy of this one
- Magna, Utah 2020 M 5.7 320,000× the energy of this one
- Around the size people start to feel M 3.0 29× the energy of this one
- This earthquake M 2.0 about 33 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 35.5613, -85.0533. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Rhea County, TN | 10 km (6 mi) | ENE | earthquakes near Rhea County |
| Bledsoe County, TN | 14 km (9 mi) | WNW | earthquakes near Bledsoe County |
| Meigs County, TN | 22 km (14 mi) | ESE | earthquakes near Meigs County |
| Sequatchie County, TN | 39 km (24 mi) | WSW | earthquakes near Sequatchie County |
| Van Buren County, TN | 40 km (25 mi) | WNW | earthquakes near Van Buren County |
| McMinn County, TN | 42 km (26 mi) | ESE | earthquakes near McMinn County |
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.
- 4.3 2 km ENE of Crab Orchard, Tennessee
- 3.1 4 km SSW of Crab Orchard, Tennessee
- 2.1 6 km NNW of Calhoun, Tennessee
- 1.8 5 km ENE of Lakesite, Tennessee
- 2.1 9 km ENE of Dayton, Tennessee
- 1.6 11 km WNW of Sweetwater, Tennessee
- 1.9 1 km NW of Niota, Tennessee
- 1.9 11 km SSW of Decatur, Tennessee
- 2.3 4 km N of Ooltewah, Tennessee
- 2.2 7 km SE of Dayton, Tennessee
- 2.4 16 km E of Spring City, Tennessee
- 2.3 4 km NNW of Flat Top Mountain, Tennessee
- 1.6 11 km SW of Rockwood, Tennessee
- 2.3 12 km SW of Rockwood, Tennessee
- 2.3 8 km E of Pikeville, 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.