QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7ml

5 km ESE of Lakeside, Montana

· 3.2 km deep · released about 12 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Flathead County 34 kmLake County 40 kmSanders County 81 kmMissoula County 110 kmLincoln County 114 kmGlacier County 117 kmMineral County 119 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
3.2 km below the surface
Felt
1 report · strongest reported intensity III
Nearest
Flathead County, 34 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 990 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 1 person has reported feeling it to USGS.

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 48.0015, -114.1603. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Flathead County, MT 34 km (21 mi) SSW of here earthquakes near Flathead County
Lake County, MT 40 km (25 mi) N of here earthquakes near Lake County
Sanders County, MT 81 km (50 mi) ENE of here earthquakes near Sanders County
Missoula County, MT 110 km (68 mi) N of here earthquakes near Missoula County
Lincoln County, MT 114 km (71 mi) ESE of here earthquakes near Lincoln County
Glacier County, MT 117 km (72 mi) SW of here earthquakes near Glacier County

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

Aftershocks so far

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

  1. 2.4 9 km SSW of Bear Dance, Montana
  2. 1.6 1 km SSW of Dayton, Montana
  3. 1.8 17 km SSE of Swan Lake, Montana
  4. 1.8 12 km NE of Forest Hill Village, Montana
  5. 1.7 20 km E of Finley Point, Montana
  6. 1.6 20 km E of Finley Point, Montana
  7. 1.6 20 km E of Finley Point, Montana
  8. 2.1 20 km E of Finley Point, Montana
  9. 1.7 19 km E of Finley Point, Montana
  10. 1.9 12 km ESE of Evergreen, Montana
  11. 1.6 6 km SW of Woods Bay, Montana
  12. 1.7 1 km S of Woods Bay, Montana
  13. 2.1 6 km SW of Woods Bay, Montana
  14. 1.6 6 km SW of Woods Bay, Montana
  15. 2.2 7 km WNW of Lake Mary Ronan, 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.