QuakeIndex

Earthquake · reviewed by a seismologist

M 2.5md

Earthquake near Bryson City, NC

No earthquake was likely felt in Bryson City in the 24 hours to 3:34 pm EST (20:34 UTC). The last one was M 2.1, 20 km (13 mi) SE, at 11:05 pm EDT on 4 July 2026, estimated intensity II (weak) in town. Every earthquake near Bryson City

This page: a magnitude 2.5 earthquake was recorded 7 km (5 mi) west-southwest of Bryson City, NC, at 8:27 am EDT on 4 November 2023 (12:27 UTC), 13 km deep. 24 people have reported feeling it to USGS.

USGS: 7 km WSW of Bryson City, North Carolina

73 km (45 mi) SSE of Knoxville, TN

8:27 am EDT, Nov 4, 2023 · · 13 km deep · released about 180 lb of TNT

10 km30 km60 km120 km N Swain County 18 kmGraham County 28 kmMacon County 31 kmJackson County 39 kmSevier County 42 kmClay County 45 kmBlount County 47 kmHaywood County 52 kmCherokee County 57 km
Distance rings around the epicentre, with the nearest towns at their true direction and later quakes as coloured dots. Not a shaking map — see the USGS ShakeMap for that.
When
8:27 am EDT on 4 November 2023 ()
Where
7 km (5 mi) west-southwest of Bryson City, NC · earthquakes near Bryson City
North Carolina today
every earthquake in North Carolina in the last 24 hours
Magnitude
M 2.5 (md)
Depth
13 km below the surface
Felt
24 reports · strongest reported intensity III
Nearest
Swain County, 18 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 713 days ago

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 45 km (28 mi) from the epicentre. In Bryson City, 7 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.

Earthquakes near other towns within 30 km: Cherokee, Sylva, Franklin.

How big was it?

This earthquake released about 180 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 86,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 61,000× the energy of this one
  3. Around the size people start to feel M 3.0 5.4× the energy of this one
  4. This earthquake M 2.5 about 180 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 35.4138, -83.5285. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Swain County, NC 18 km (11 mi) NNE earthquakes near Swain County
Graham County, NC 28 km (18 mi) WSW earthquakes near Graham County
Macon County, NC 31 km (19 mi) SSE earthquakes near Macon County
Jackson County, NC 39 km (24 mi) ESE earthquakes near Jackson County
Sevier County, TN 42 km (26 mi) N earthquakes near Sevier County
Clay County, NC 45 km (28 mi) SSW earthquakes near Clay County

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

Aftershocks so far

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

  1. 2.1 7 km WNW of Pigeon Forge, Tennessee
  2. 2.1 10 km SSW of Dillsboro, North Carolina
  3. 2.2 10 km WNW of Lake Santeetlah, North Carolina
  4. 2.3 4 km N of Pigeon Forge, Tennessee
  5. 1.8 8 km NNW of Bryson City, North Carolina
  6. 2.2 10 km W of Forest Hills, North Carolina
  7. 2.6 10 km SSW of Dillsboro, North Carolina
  8. 2.0 21 km SE of Greenback, Tennessee
  9. 1.9 20 km WNW of Lake Santeetlah, North Carolina
  10. 2.2 20 km WNW of Lake Santeetlah, North Carolina
  11. 4.1 21 km SE of Greenback, Tennessee
  12. 1.8 9 km SW of Dillsboro, North Carolina
  13. 2.1 1 km SW of Sevierville, Tennessee
  14. 2.0 6 km SSW of Dillsboro, North Carolina
  15. 2.5 4 km SSE of Sevierville, 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

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.