QuakeIndex

Earthquake · reviewed by a seismologist

M 2.2ml

45 km S of Stanley, Idaho

· 10 km deep · released about 60 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Camas County 40 kmBoise County 58 kmElmore County 59 kmCuster County 81 kmGooding County 95 kmBlaine County 98 kmAda County 106 kmGem County 113 kmLincoln 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
Camas County, 40 km SSE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1127 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 43.8142, -115.0312. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Camas County, ID 40 km (25 mi) NNW of here earthquakes near Camas County
Boise County, ID 58 km (36 mi) ESE of here earthquakes near Boise County
Elmore County, ID 59 km (36 mi) NE of here earthquakes near Elmore County
Custer County, ID 81 km (50 mi) SW of here earthquakes near Custer County
Gooding County, ID 95 km (59 mi) N of here earthquakes near Gooding County
Blaine County, ID 98 km (61 mi) WNW of here earthquakes near Blaine County

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

Aftershocks so far

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

  1. 1.7 13 km W of Stanley, Idaho
  2. 1.9 14 km W of Stanley, Idaho
  3. 2.9 14 km W of Stanley, Idaho
  4. 1.9 13 km SW of Stanley, Idaho
  5. 2.7 14 km SW of Stanley, Idaho
  6. 1.8 13 km SW of Stanley, Idaho
  7. 2.2 13 km W of Stanley, Idaho
  8. 2.2 12 km SW of Stanley, Idaho
  9. 2.3 13 km SW of Stanley, Idaho
  10. 2.1 13 km W of Stanley, Idaho
  11. 2.2 southern Idaho
  12. 2.2 6 km NW of Stanley, Idaho
  13. 1.7 23 km NNW of Sun Valley, Idaho
  14. 1.6 17 km WNW of Stanley, Idaho
  15. 2.4 12 km W of Stanley, 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.

For this area

The largest earthquake within 50 km in our catalogue was M 4.2 on 2020-08-08 — it released about 1,000 times the energy of this one.

From the QuakeIndex catalogue, built from the USGS FDSN event service.

On USGS

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