QuakeIndex

Earthquake · reviewed by a seismologist

M 3.0ml

2 km NNE of Olney, Montana

· 5.0 km deep · released about 950 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Flathead County 48 kmLincoln County 66 kmSanders County 102 kmLake County 109 kmGlacier 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 3.0 (ml)
Depth
5.0 km below the surface
Felt
no reports yet
Nearest
Flathead County, 48 km SE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3210 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 950 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.0 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 350,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 16,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 11,000× the energy of this one
  4. This earthquake M 3.0 about 950 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 48.5709, -114.5603. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Flathead County, MT 48 km (30 mi) NW of here earthquakes near Flathead County
Lincoln County, MT 66 km (41 mi) E of here earthquakes near Lincoln County
Sanders County, MT 102 km (63 mi) NNE of here earthquakes near Sanders County
Lake County, MT 109 km (68 mi) NNW of here earthquakes near Lake County
Glacier County, MT 116 km (72 mi) W of here earthquakes near Glacier County

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

Aftershocks so far

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

  1. 2.0 5 km SSW of West Glacier, Montana
  2. 2.3 6 km NNE of Olney, Montana
  3. 2.0 1 km ENE of Columbia Falls, Montana
  4. 1.6 Western Montana
  5. 2.2 19 km E of Indian Springs, Montana
  6. 1.7 11 km NW of Batavia, Montana
  7. 1.6 12 km NNW of Batavia, Montana
  8. 1.6 13 km WNW of Marion, Montana
  9. 1.7 18 km NW of Marion, Montana
  10. 2.1 10 km SW of Whitefish, Montana
  11. 1.9 3 km NNW of Coram, Montana
  12. 1.6 2 km NNE of Coram, Montana
  13. 1.6 10 km SSW of Whitefish, Montana
  14. 2.6 7 km WSW of Whitefish, Montana
  15. 3.2 19 km ENE of Stryker, 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.