QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1ml

4 km WSW of Whitefish, Montana

· 10 km deep · released about 44 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Flathead County 28 kmLincoln County 80 kmLake County 87 kmSanders County 92 kmGlacier County 109 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 2.1 (ml)
Depth
10 km below the surface
Felt
no reports yet
Nearest
Flathead County, 28 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2113 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 44 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.1 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 340,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 240,000× the energy of this one
  3. Around the size people start to feel M 3.0 22× the energy of this one
  4. This earthquake M 2.1 about 44 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 48.3975, -114.4015. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Flathead County, MT 28 km (18 mi) WNW of here earthquakes near Flathead County
Lincoln County, MT 80 km (50 mi) ESE of here earthquakes near Lincoln County
Lake County, MT 87 km (54 mi) NNW of here earthquakes near Lake County
Sanders County, MT 92 km (57 mi) NE of here earthquakes near Sanders County
Glacier County, MT 109 km (68 mi) WSW of here earthquakes near Glacier County
Shoshone County, ID 161 km (100 mi) NE of here earthquakes near Shoshone County

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

Aftershocks so far

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

  1. 2.0 5 km SSW of West Glacier, Montana
  2. 1.8 12 km NE of Forest Hill Village, Montana
  3. 1.9 12 km ESE of Evergreen, Montana
  4. 2.2 7 km WNW of Lake Mary Ronan, Montana
  5. 1.7 7 km WNW of Lake Mary Ronan, Montana
  6. 1.8 6 km WNW of Lake Mary Ronan, Montana
  7. 2.3 6 km NNE of Olney, Montana
  8. 1.7 15 km NNE of Bigfork, Montana
  9. 1.7 5 km ESE of Lakeside, Montana
  10. 1.6 3 km NNE of Somers, Montana
  11. 2.0 1 km ENE of Columbia Falls, Montana
  12. 1.6 Western Montana
  13. 2.1 8 km NNW of Bigfork, Montana
  14. 1.7 11 km NW of Batavia, Montana
  15. 2.2 16 km ENE of Happys Inn, 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.