QuakeIndex

Earthquake · reviewed by a seismologist

M 2.2ml

21 km ESE of Saint Maries, Idaho

· 5.0 km deep · released about 54 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Benewah County 26 kmShoshone County 32 kmKootenai County 56 kmLatah County 59 kmClearwater County 81 kmMineral County 92 kmSpokane County 93 kmSanders County 100 kmWhitman County 102 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
5.0 km below the surface
Felt
no reports yet
Nearest
Benewah County, 26 km W
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3777 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 54 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 5.8 280,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 200,000× the energy of this one
  3. Around the size people start to feel M 3.0 18× the energy of this one
  4. This earthquake M 2.2 about 54 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 47.2567, -116.2893. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Benewah County, ID 26 km (16 mi) E of here earthquakes near Benewah County
Shoshone County, ID 32 km (20 mi) WSW of here earthquakes near Shoshone County
Kootenai County, ID 56 km (35 mi) SSE of here earthquakes near Kootenai County
Latah County, ID 59 km (37 mi) NE of here earthquakes near Latah County
Clearwater County, ID 81 km (50 mi) NW of here earthquakes near Clearwater County
Mineral County, MT 92 km (57 mi) W of here earthquakes near Mineral County

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

Aftershocks so far

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

  1. 1.7 6 km S of Saint Maries, Idaho
  2. 2.1 Idaho-Montana border region
  3. 1.7 2 km NNW of Mullan, Idaho
  4. 1.5 4 km NNE of Mullan, Idaho
  5. 1.6 1 km ENE of Mullan, Idaho
  6. 1.9 1 km NE of Mullan, Idaho
  7. 3.0 2 km WSW of Mullan, Idaho
  8. 1.5 0 km S of Mullan, Idaho
  9. 1.6 2 km NE of Mullan, Idaho
  10. 1.6 2 km SE of Mullan, Idaho
  11. 1.5 3 km W of Mullan, Idaho
  12. 1.7 1 km ENE of Mullan, Idaho
  13. 2.4 3 km SSE of Wallace, Idaho
  14. 1.9 1 km E of Mullan, Idaho
  15. 1.7 3 km E of Wallace, 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.