QuakeIndex

Earthquake · reviewed by a seismologist

M 6.5mww

Stanley, Idaho

· 12 km deep · released about 85 kilotons of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Valley County 59 kmBoise County 71 kmCuster County 72 kmLemhi County 110 kmCamas County 110 kmGem County 111 kmAdams 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 6.5 (mww)
Depth
12 km below the surface
Felt
23163 reports · strongest reported intensity VIII
Measured shaking
intensity VIII (ShakeMap)
USGS impact alert
green
Nearest
Valley County, 59 km NW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 38 days ago

This was a strong earthquake. Damage is likely near the epicentre and it is felt over a wide area. 23163 people have reported feeling it to USGS.

How big was it?

This earthquake released about 85 kilotons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 7.5 would have released about 32 times as much.

  1. Ridgecrest, California 2019 M 7.1 7.9× the energy of this one
  2. Loma Prieta, California 1989 M 6.9 4× the energy of this one
  3. Northridge, California 1994 M 6.7 2× the energy of this one
  4. This earthquake M 6.5 about 85 kilotons of TNT
  5. Mineral, Virginia 2011 M 5.8 this one released 11× more
  6. Magna, Utah 2020 M 5.7 this one released 16× more

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 44.4646, -115.1175. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Valley County, ID 59 km (37 mi) SE of here earthquakes near Valley County
Boise County, ID 71 km (44 mi) NE of here earthquakes near Boise County
Custer County, ID 72 km (45 mi) WNW of here earthquakes near Custer County
Lemhi County, ID 110 km (68 mi) WSW of here earthquakes near Lemhi County
Camas County, ID 110 km (69 mi) NNW of here earthquakes near Camas County
Gem County, ID 111 km (69 mi) ENE of here earthquakes near Gem County

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

Aftershocks so far

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

  1. 3.1 16 km NW of Stanley, Idaho
  2. 3.3 18 km NW of Stanley, Idaho
  3. 3.0 36 km NW of Stanley, Idaho
  4. 2.9 37 km NW of Stanley, Idaho
  5. 2.8 15 km N of Stanley, Idaho
  6. 2.9 22 km WNW of Stanley, Idaho
  7. 2.6 24 km W of Stanley, Idaho
  8. 2.7 36 km NNE of Lowman, Idaho
  9. 2.9 36 km NW of Stanley, Idaho
  10. 2.7 18 km WNW of Stanley, Idaho
  11. 3.2 27 km NW of Stanley, Idaho
  12. 2.6 10 km WNW of Stanley, Idaho
  13. 2.7 26 km W of Stanley, Idaho
  14. 2.7 18 km NW of Stanley, Idaho
  15. 3.1 31 km NW 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.

On USGS

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