QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7md

32 km ESE of Island Park, Idaho

· 8.2 km deep · released about 12 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Fremont County 40 kmTeton County 54 kmTeton County 63 kmMadison County 78 kmClark County 108 kmBonneville County 113 kmPark County 114 kmJefferson County 120 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 1.7 (md)
Depth
8.2 km below the surface
Felt
1 report · strongest reported intensity III
Nearest
Fremont County, 40 km WSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1485 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 1 person has reported feeling it to USGS.

How big was it?

This earthquake released about 12 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,300,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 900,000× the energy of this one
  3. Around the size people start to feel M 3.0 80× the energy of this one
  4. This earthquake M 1.7 about 12 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 44.3033, -110.9977. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Fremont County, ID 40 km (25 mi) ENE of here earthquakes near Fremont County
Teton County, WY 54 km (33 mi) WNW of here earthquakes near Teton County
Teton County, ID 63 km (39 mi) NNE of here earthquakes near Teton County
Madison County, ID 78 km (48 mi) NE of here earthquakes near Madison County
Clark County, ID 108 km (67 mi) E of here earthquakes near Clark County
Bonneville County, ID 113 km (70 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

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

  1. 1.6 Idaho-Montana border region
  2. 1.5 52 km ESE of West Yellowstone, Montana
  3. 1.7 58 km N of Kelly, Wyoming
  4. 2.5 Wyoming
  5. 2.4 54 km NE of Alta, Wyoming
  6. 2.2 54 km NE of Alta, Wyoming
  7. 2.1 49 km NNE of Kelly, Wyoming
  8. 2.0 49 km NNE of Kelly, Wyoming
  9. 1.6 34 km E of West Yellowstone, Montana
  10. 1.5 Wyoming
  11. 2.2 45 km ENE of Warm River, Idaho
  12. 1.6 Wyoming
  13. 1.7 7 km N of West Yellowstone, Montana
  14. 2.3 34 km ESE of West Yellowstone, Montana
  15. 2.5 34 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.