QuakeIndex

Earthquake · reviewed by a seismologist

M 2.2ml

12 km NW of Mackay, Idaho

· 10 km deep · released about 60 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Custer County 52 kmButte County 56 kmBlaine County 68 kmCamas County 99 kmLemhi County 106 kmLincoln County 115 kmClark County 116 kmJefferson County 116 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 2.2 (ml)
Depth
10 km below the surface
Felt
no reports yet
Nearest
Custer County, 52 km NW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2140 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

How big was it?

This earthquake released about 60 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.2 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 250,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 180,000× the energy of this one
  3. Around the size people start to feel M 3.0 16× the energy of this one
  4. This earthquake M 2.2 about 60 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 43.9846, -113.7388. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Custer County, ID 52 km (32 mi) SE of here earthquakes near Custer County
Butte County, ID 56 km (35 mi) NW of here earthquakes near Butte County
Blaine County, ID 68 km (42 mi) NNE of here earthquakes near Blaine County
Camas County, ID 99 km (61 mi) ENE of here earthquakes near Camas County
Lemhi County, ID 106 km (66 mi) S of here earthquakes near Lemhi County
Lincoln County, ID 115 km (72 mi) NNE of here earthquakes near Lincoln County

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

Aftershocks so far

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

  1. 1.6 20 km E of Clayton, Idaho
  2. 2.3 28 km E of Clayton, Idaho
  3. 1.8 27 km E of Clayton, Idaho
  4. 2.3 27 km E of Clayton, Idaho
  5. 2.2 26 km E of Clayton, Idaho
  6. 2.4 26 km E of Clayton, Idaho
  7. 2.4 26 km E of Clayton, Idaho
  8. 2.1 26 km E of Clayton, Idaho
  9. 2.0 26 km E of Clayton, Idaho
  10. 3.2 25 km E of Clayton, Idaho
  11. 4.3 24 km E of Clayton, Idaho
  12. 1.6 26 km N of Mackay, Idaho
  13. 2.2 28 km E of Clayton, Idaho
  14. 1.6 41 km NNW of Mackay, Idaho
  15. 1.6 33 km ESE of Clayton, Idaho

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.