QuakeIndex

Earthquake · reviewed by a seismologist

M 2.8ml

63 km SE of West Yellowstone, Montana

· 5.6 km deep · released about 550 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Teton County 29 kmPark County 74 kmFremont County 80 kmTeton County 84 kmMadison County 110 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 2.8 (ml)
Depth
5.6 km below the surface
Felt
no reports yet
Nearest
Teton County, 29 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2136 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 550 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 28,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 19,000× the energy of this one
  3. Around the size people start to feel M 3.0 1.7× the energy of this one
  4. This earthquake M 2.8 about 550 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 44.3063, -110.4858. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Teton County, WY 29 km (18 mi) N of here earthquakes near Teton County
Park County, WY 74 km (46 mi) WSW of here earthquakes near Park County
Fremont County, ID 80 km (50 mi) E of here earthquakes near Fremont County
Teton County, ID 84 km (52 mi) NE of here earthquakes near Teton County
Madison County, ID 110 km (68 mi) ENE of here earthquakes near Madison County
Bonneville County, ID 136 km (85 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

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

  1. 1.8 66 km SSE of Mammoth, Wyoming
  2. 1.9 67 km ESE of West Yellowstone, Montana
  3. 1.9 66 km ESE of West Yellowstone, Montana
  4. 2.4 66 km SSE of Mammoth, Wyoming
  5. 2.2 66 km ESE of West Yellowstone, Montana
  6. 1.8 66 km ESE of West Yellowstone, Montana
  7. 2.6 66 km SSE of Mammoth, Wyoming
  8. 1.9 66 km SSE of Mammoth, Wyoming
  9. 1.9 Wyoming
  10. 1.7 51 km S of Silver Gate, Montana
  11. 2.1 52.1 km WSW of Warm River, ID
  12. 1.9 52.0 km WSW of Warm River, ID
  13. 1.5 34 km ESE of West Yellowstone, Montana
  14. 1.5 34 km ESE of West Yellowstone, Montana
  15. 1.5 32 km E 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.