QuakeIndex

Earthquake · reviewed by a seismologist

M 1.5ml

50 km ESE of West Yellowstone, Montana

· 3.8 km deep · released about 5.4 lb of TNT

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10 km30 km60 km120 km N Teton County 52 kmPark County 72 kmFremont County 85 kmTeton County 101 kmPark County 106 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 1.5 (ml)
Depth
3.8 km below the surface
Felt
no reports yet
Nearest
Teton County, 52 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2428 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 5.4 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,800,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 2,000,000× the energy of this one
  3. Around the size people start to feel M 3.0 180× the energy of this one
  4. This earthquake M 1.5 about 5.4 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 44.5122, -110.5032. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Teton County, WY 52 km (32 mi) N of here earthquakes near Teton County
Park County, WY 72 km (45 mi) W of here earthquakes near Park County
Fremont County, ID 85 km (53 mi) ENE of here earthquakes near Fremont County
Teton County, ID 101 km (63 mi) NE of here earthquakes near Teton County
Park County, MT 106 km (66 mi) S of here earthquakes near Park County
Madison County, ID 122 km (76 mi) NE of here earthquakes near Madison County

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

Aftershocks so far

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

  1. 2.1 24 km ENE of West Yellowstone, Montana
  2. 1.7 45 km ENE of Warm River, Idaho
  3. 1.8 44 km ESE of West Yellowstone, Montana
  4. 1.7 34 km E of West Yellowstone, Montana
  5. 1.7 17 km E of Hebgen Lake Estates, Montana
  6. 1.5 16 km SSE of West Yellowstone, Montana
  7. 1.5 32 km SE of West Yellowstone, Montana
  8. 1.5 10 km ENE of West Yellowstone, Montana
  9. 1.7 20 km S of Mammoth, Wyoming
  10. 1.6 39 km SSE of Mammoth, Wyoming
  11. 1.6 25 km S of Mammoth, Wyoming
  12. 1.8 37 km S of Silver Gate, Montana
  13. 1.6 72 km NNE of Kelly, Wyoming
  14. 1.5 56 km SE of West Yellowstone, Montana
  15. 1.5 12 km NE of West Yellowstone, 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

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