QuakeIndex

Earthquake · reviewed by a seismologist

M 2.6ml

13 km ESE of Kicking Horse, Montana

· 5.0 km deep · released about 240 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Lake County 29 kmMissoula County 42 kmMineral County 94 kmPowell County 97 kmFlathead County 99 kmSanders County 103 kmGranite County 118 kmLewis and Clark County 120 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 2.6 (ml)
Depth
5.0 km below the surface
Felt
no reports yet
Nearest
Lake County, 29 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 162 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

How big was it?

This earthquake released about 240 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 63,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 45,000× the energy of this one
  3. Around the size people start to feel M 3.0 4× the energy of this one
  4. This earthquake M 2.6 about 240 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 47.4090, -113.9104. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Lake County, MT 29 km (18 mi) SSE of here earthquakes near Lake County
Missoula County, MT 42 km (26 mi) N of here earthquakes near Missoula County
Mineral County, MT 94 km (58 mi) ENE of here earthquakes near Mineral County
Powell County, MT 97 km (60 mi) NW of here earthquakes near Powell County
Flathead County, MT 99 km (62 mi) S of here earthquakes near Flathead County
Sanders County, MT 103 km (64 mi) ESE of here earthquakes near Sanders County

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

Aftershocks so far

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

  1. 0.9 9 km WSW of Condon, Montana
  2. 3.2 3 km NE of Seeley Lake, Montana
  3. 1.9 15 km N of Seeley Lake, Montana
  4. 1.9 18 km E of Saint Ignatius, Montana
  5. 2.4 9 km SSW of Bear Dance, Montana
  6. 1.8 17 km SSE of Swan Lake, 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.

On USGS

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