QuakeIndex

Earthquake · reviewed by a seismologist

M 2.2ml

11 km NNW of Emigrant, Montana

· 15 km deep · released about 60 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Park County 19 kmGallatin County 30 kmSweet Grass County 75 kmMadison County 90 kmBroadwater County 111 kmStillwater County 111 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 2.2 (ml)
Depth
15 km below the surface
Felt
no reports yet
Nearest
Park County, 19 km E
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2064 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 60 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.2 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 250,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 180,000× the energy of this one
  3. Around the size people start to feel M 3.0 16× the energy of this one
  4. This earthquake M 2.2 about 60 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 45.4673, -110.7820. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Park County, MT 19 km (12 mi) W of here earthquakes near Park County
Gallatin County, MT 30 km (19 mi) E of here earthquakes near Gallatin County
Sweet Grass County, MT 75 km (47 mi) WSW of here earthquakes near Sweet Grass County
Madison County, MT 90 km (56 mi) E of here earthquakes near Madison County
Broadwater County, MT 111 km (69 mi) SSE of here earthquakes near Broadwater County
Stillwater County, MT 111 km (69 mi) W of here earthquakes near Stillwater County

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

Aftershocks so far

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

  1. 1.2 21 km ESE of Pray, Montana
  2. 1.6 2 km E of Churchill, Montana
  3. 1.7 13 km S of Bozeman, Montana
  4. 1.5 14 km NNW of Emigrant, Montana
  5. 2.0 5 km NNE of Springhill, Montana
  6. 1.6 7 km NNW of Emigrant, Montana
  7. 1.5 23 km WNW of Corwin Springs, Montana
  8. 2.3 23 km WNW of Corwin Springs, Montana
  9. 1.9 23 km WNW of Corwin Springs, Montana
  10. 2.0 23 km WNW of Corwin Springs, Montana
  11. 2.3 15 km E of Livingston, Montana
  12. 3.0 1 km N of Belgrade, Montana
  13. 1.6 9 km WSW of South Glastonbury, Montana
  14. 1.5 10 km WNW of Four Corners, Montana
  15. 3.8 9 km NNW of Livingston, 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.