QuakeIndex

Earthquake · reviewed by a seismologist

M 3.1ml

43 km ENE of Warm River, Idaho

· 7.5 km deep · released about 1,600 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Teton County 44 kmFremont County 52 kmTeton County 67 kmMadison County 87 kmPark County 101 kmBonneville County 119 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 3.1 (ml)
Depth
7.5 km below the surface
Felt
3 reports · strongest reported intensity III
Nearest
Teton County, 44 km SE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1564 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 3 people have reported feeling it to USGS.

How big was it?

This earthquake released about 1,600 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.2 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 210,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 9,400× the energy of this one
  3. Magna, Utah 2020 M 5.7 6,700× the energy of this one
  4. This earthquake M 3.1 about 1,600 lb of TNT
  5. Around the size people start to feel M 3.0 this one released 1.7× more

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 44.3023, -110.8417. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Teton County, WY 44 km (27 mi) NW of here earthquakes near Teton County
Fremont County, ID 52 km (32 mi) E of here earthquakes near Fremont County
Teton County, ID 67 km (42 mi) NNE of here earthquakes near Teton County
Madison County, ID 87 km (54 mi) NE of here earthquakes near Madison County
Park County, WY 101 km (63 mi) WSW of here earthquakes near Park County
Bonneville County, ID 119 km (74 mi) NNE of here earthquakes near Bonneville County

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

Aftershocks so far

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

  1. 1.8 12 km NE of West Yellowstone, Montana
  2. 2.2 11 km NE of West Yellowstone, Montana
  3. 2.4 12 km WSW of West Yellowstone, Montana
  4. 2.0 11 km NE of West Yellowstone, Montana
  5. 1.6 11 km NE of West Yellowstone, Montana
  6. 2.3 11 km NE of West Yellowstone, Montana
  7. 1.7 34 km E of West Yellowstone, Montana
  8. 1.7 34 km E of West Yellowstone, Montana
  9. 1.6 48 km ESE of West Yellowstone, Montana
  10. 1.6 24 km ENE of West Yellowstone, Montana
  11. 1.5 46 km SE of West Yellowstone, Montana
  12. 2.2 25 km SSE of West Yellowstone, Montana
  13. 1.6 24 km SSE of West Yellowstone, Montana
  14. 1.6 34 km ESE of West Yellowstone, Montana
  15. 1.5 13 km NE of Tetonia, Idaho

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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