QuakeIndex

Earthquake · reviewed by a seismologist

M 1.5ml

57 km SE of West Yellowstone, Montana

· 8.1 km deep · released about 5.6 lb of TNT

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10 km30 km60 km120 km N Teton County 30 kmFremont County 68 kmTeton County 73 kmPark County 86 kmMadison County 98 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
8.1 km below the surface
Felt
no reports yet
Nearest
Teton County, 30 km SSE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 265 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 5.6 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 2,700,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,900,000× the energy of this one
  3. Around the size people start to feel M 3.0 170× the energy of this one
  4. This earthquake M 1.5 about 5.6 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 44.2725, -110.6310. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Teton County, WY 30 km (19 mi) NNW of here earthquakes near Teton County
Fremont County, ID 68 km (42 mi) E of here earthquakes near Fremont County
Teton County, ID 73 km (46 mi) NE of here earthquakes near Teton County
Park County, WY 86 km (53 mi) WSW of here earthquakes near Park County
Madison County, ID 98 km (61 mi) ENE of here earthquakes near Madison County
Bonneville County, ID 126 km (78 mi) NE of here earthquakes near Bonneville County

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

Aftershocks so far

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

  1. 0.9 41 km SSE of Mammoth, Wyoming
  2. 2.7 57 km NE of Kelly, Wyoming
  3. 3.4 57 km NE of Kelly, Wyoming
  4. 1.5 62 km ESE of West Yellowstone, Montana
  5. 1.5 24 km SSE of West Yellowstone, Montana
  6. 1.6 49 km ESE of West Yellowstone, Montana
  7. 1.9 43 km ENE of Warm River, Idaho
  8. 1.5 29 km ESE of West Yellowstone, Montana
  9. 2.0 51 km NNE of Kelly, Wyoming
  10. 1.5 30 km ESE of West Yellowstone, Montana
  11. 3.3 39 km SSE of Mammoth, Wyoming
  12. 1.6 51 km NNE of Kelly, Wyoming
  13. 1.6 29 km ESE of West Yellowstone, Montana
  14. 2.1 46 km ENE of Warm River, Idaho
  15. 1.9 66 km ESE 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

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.