QuakeIndex

quarry blast · reviewed by a seismologist

M 1.8md

7 km ENE of Brevard, North Carolina

· 0.4 km deep · released about 16 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Transylvania County 15 kmHenderson County 19 kmPickens County 41 kmBuncombe County 41 kmJackson County 43 kmPolk County 44 kmHaywood County 45 kmGreenville County 47 kmOconee County 67 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
Magnitude
M 1.8 (md)
Depth
0.4 km below the surface
Felt
11 reports · strongest reported intensity IV
Nearest
Transylvania County, 15 km WSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 505 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 11 people have reported feeling it to USGS.

USGS catalogues this as quarry blast, not an earthquake.

How big was it?

This earthquake released about 16 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 970,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 680,000× the energy of this one
  3. Around the size people start to feel M 3.0 61× the energy of this one
  4. This earthquake M 1.8 about 16 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.

Where

Epicentre 35.2508, -82.6560. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Transylvania County, NC 15 km (9 mi) ENE of here earthquakes near Transylvania County
Henderson County, NC 19 km (12 mi) WSW of here earthquakes near Henderson County
Pickens County, SC 41 km (26 mi) N of here earthquakes near Pickens County
Buncombe County, NC 41 km (26 mi) SSW of here earthquakes near Buncombe County
Jackson County, NC 43 km (27 mi) E of here earthquakes near Jackson County
Polk County, NC 44 km (28 mi) W of here earthquakes near Polk County

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

Aftershocks so far

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

  1. 2.3 7 km SE of Brevard, North Carolina
  2. 2.1 8 km W of Rosman, North Carolina
  3. 2.0 7 km SSW of Canton, North Carolina
  4. 1.8 8 km W of Rosman, North Carolina
  5. 1.6 9 km NNE of Salem, South Carolina
  6. 1.8 8 km SSE of Clyde, North Carolina
  7. 2.0 7 km SSE of Clyde, North Carolina
  8. 2.1 8 km S of West Canton, North Carolina
  9. 1.9 7 km SSE of Clyde, North Carolina
  10. 1.9 4 km N of West Canton, North Carolina
  11. 1.6 9 km W of Rosman, North Carolina
  12. 1.7 5 km W of Rosman, North Carolina
  13. 1.7 9 km W of Rosman, North Carolina
  14. 1.9 7 km W of Rosman, North Carolina
  15. 1.7 10 km W of Rosman, North Carolina

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.