Earthquake · reviewed by a seismologist
M 1.9md
Earthquake near Surgoinsville, TN
No earthquake was likely felt in Surgoinsville in the 24 hours to 2:21 pm EST (19:21 UTC). The last one was M 2.1, 30 km (19 mi) NNE, at 2:18 am EDT on 6 July 2026, estimated intensity II (weak) in town; 4 felt reports to USGS. Every earthquake near Surgoinsville
This page: a magnitude 1.9 earthquake was recorded 7 km (4 mi) east-northeast of Surgoinsville, TN, at 11:14 pm EST on 28 February 2020 (04:14 UTC), 35 km deep. 4 people have reported feeling it to USGS.
USGS: 6 km ENE of Surgoinsville, Tennessee
22 km (13 mi) W of Kingsport, TN · 120 km (74 mi) ENE of Knoxville, TN
- When
- 11:14 pm EST on 28 February 2020 ()
- Where
- 7 km (4 mi) east-northeast of Surgoinsville, TN · earthquakes near Surgoinsville
- Magnitude
- M 1.9 (md)
- Depth
- 35 km below the surface
- Felt
- 4 reports · strongest reported intensity II
- Nearest
- Hawkins County, 14 km WSW
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 2367 days ago
Earthquake alerts for Surgoinsville, 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 it was probably too small to be felt, even directly above it. In Surgoinsville, 7 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: Church Hill, Mount Carmel, Fall Branch, Kingsport, Rogersville, Gate City.
How big was it?
This earthquake released about 19 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.9 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 790,000× the energy of this one
- Magna, Utah 2020 M 5.7 560,000× the energy of this one
- Around the size people start to feel M 3.0 50× the energy of this one
- This earthquake M 1.9 about 19 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 36.4875, -82.7810. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Hawkins County, TN | 14 km (9 mi) | WSW | earthquakes near Hawkins County |
| Scott County, VA | 29 km (18 mi) | NNE | earthquakes near Scott County |
| Washington County, TN | 33 km (21 mi) | SE | earthquakes near Washington County |
| Greene County, TN | 35 km (22 mi) | S | earthquakes near Greene County |
| Lee County, VA | 39 km (24 mi) | NW | earthquakes near Lee County |
| Hancock County, TN | 40 km (25 mi) | W | earthquakes near Hancock County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
13 earthquakes have been recorded within 50 km since this one.
- 2.1 5 km NE of Clinchport, Virginia
- 2.3 2 km ENE of Greeneville, Tennessee
- 2.4 5 km NNE of Bean Station, Tennessee
- 2.3 8 km NNW of Greeneville, Tennessee
- 1.9 1 km SW of Fall Branch, Tennessee
- 2.4 Kentucky-Tennessee border region
- 2.5 6 km E of Sneedville, Tennessee
- 2.0 9 km NNE of Mosheim, Tennessee
- 3.1 Tennessee-Virginia border region
- 2.0 10 km NE of Mooresburg, Tennessee
- 2.4 6 km NW of Greeneville, Tennessee
- 2.3 6 km N of Greeneville, Tennessee
- 2.5 11 km S of Tusculum, 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.