QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9md

67 km ESE of West Yellowstone, Montana

· 5.8 km deep · released about 19 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Teton County 43 kmPark County 58 kmFremont County 96 kmTeton County 103 kmPark 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 1.9 (md)
Depth
5.8 km below the surface
Felt
no reports yet
Nearest
Teton County, 43 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2120 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 19 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 790,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 560,000× the energy of this one
  3. Around the size people start to feel M 3.0 50× the energy of this one
  4. This earthquake M 1.9 about 19 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 44.4313, -110.3177. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Teton County, WY 43 km (27 mi) NNE of here earthquakes near Teton County
Park County, WY 58 km (36 mi) W of here earthquakes near Park County
Fremont County, ID 96 km (60 mi) ENE of here earthquakes near Fremont County
Teton County, ID 103 km (64 mi) NE of here earthquakes near Teton County
Park County, MT 116 km (72 mi) S of here earthquakes near Park County
Madison County, ID 129 km (80 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

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

  1. 1.6 35 km S of Silver Gate, Montana
  2. 2.7 36 km S of Silver Gate, Montana
  3. 1.7 57 km ESE of West Yellowstone, Montana
  4. 2.5 56 km SE of West Yellowstone, Montana
  5. 2.0 55 km SE of West Yellowstone, Montana
  6. 2.3 55 km SE of West Yellowstone, Montana
  7. 1.5 55 km SE of West Yellowstone, Montana
  8. 1.8 56 km SE of West Yellowstone, Montana
  9. 2.0 28 km S of Mammoth, Wyoming
  10. 2.1 28 km S of Mammoth, Wyoming
  11. 2.2 27 km SSE of Mammoth, Wyoming
  12. 1.7 48 km ESE of West Yellowstone, Montana
  13. 1.8 35 km SSW of Silver Gate, Montana
  14. 2.1 65 km NNE of Kelly, Wyoming
  15. 2.2 28 km SE of Mammoth, Wyoming

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.