QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7ml

25 km E of Leadore, Idaho

· 4.1 km deep · released about 12 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Beaverhead County 53 kmClark County 68 kmLemhi County 73 kmCuster County 106 kmButte County 110 kmJefferson County 112 kmMadison County 115 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 1.7 (ml)
Depth
4.1 km below the surface
Felt
no reports yet
Nearest
Beaverhead County, 53 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 583 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 12 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,300,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 900,000× the energy of this one
  3. Around the size people start to feel M 3.0 80× the energy of this one
  4. This earthquake M 1.7 about 12 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 44.6650, -113.0350. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Beaverhead County, MT 53 km (33 mi) SSW of here earthquakes near Beaverhead County
Clark County, ID 68 km (42 mi) NW of here earthquakes near Clark County
Lemhi County, ID 73 km (46 mi) ESE of here earthquakes near Lemhi County
Custer County, ID 106 km (66 mi) ENE of here earthquakes near Custer County
Butte County, ID 110 km (68 mi) N of here earthquakes near Butte County
Jefferson County, ID 112 km (70 mi) NNW of here earthquakes near Jefferson County

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

Aftershocks so far

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

  1. 3.3 18 km S of Lima, Montana
  2. 1.7 2 km SW of Lima, Montana
  3. 3.2 18 km N of Leadore, Idaho
  4. 1.8 26 km S of Lima, Montana
  5. 1.7 32 km S of Lima, Montana
  6. 2.1 2 km SSE of Lima, Montana
  7. 1.8 27 km SW of Dillon, Montana
  8. 1.6 19 km NW of Lima, Montana
  9. 1.7 33 km NW of Lima, Montana
  10. 1.8 34 km NW of Lima, Montana
  11. 1.8 33 km NW of Lima, Montana
  12. 1.9 2 km SSE of Lima, Montana
  13. 2.3 2 km SE of Lima, Montana
  14. 1.9 37 km SW of Dillon, Montana
  15. 1.7 10 km SE of Lima, Montana

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 4.6 on 2019-04-09 — it released about 20,000 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.