QuakeIndex

Earthquake · reviewed by a seismologist

M 2.2ml

47 km SSW 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 45 kmBoise County 50 kmElmore County 54 kmCuster County 87 kmGooding County 97 kmAda County 98 kmGem County 105 kmBlaine County 106 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, 45 km SE
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 43.8110, -115.1372. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Camas County, ID 45 km (28 mi) NW of here earthquakes near Camas County
Boise County, ID 50 km (31 mi) ESE of here earthquakes near Boise County
Elmore County, ID 54 km (33 mi) NNE of here earthquakes near Elmore County
Custer County, ID 87 km (54 mi) SW of here earthquakes near Custer County
Gooding County, ID 97 km (60 mi) NNW of here earthquakes near Gooding County
Ada County, ID 98 km (61 mi) ENE of here earthquakes near Ada County

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

Aftershocks so far

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

  1. 1.8 4 km NW of Stanley, Idaho
  2. 2.4 14 km WNW of Stanley, Idaho
  3. 1.9 14 km W of Stanley, Idaho
  4. 2.4 29 km SW of Stanley, Idaho
  5. 1.6 4 km NW of Stanley, Idaho
  6. 1.7 13 km W of Stanley, Idaho
  7. 1.9 14 km W of Stanley, Idaho
  8. 2.9 14 km W of Stanley, Idaho
  9. 1.9 13 km SW of Stanley, Idaho
  10. 2.7 14 km SW of Stanley, Idaho
  11. 1.8 13 km SW of Stanley, Idaho
  12. 2.2 13 km W of Stanley, Idaho
  13. 2.2 12 km SW of Stanley, Idaho
  14. 2.3 13 km SW of Stanley, Idaho
  15. 2.1 13 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.