QuakeIndex

Earthquake · reviewed by a seismologist

M 3.2ml

26 km S of Mammoth, Wyoming

· 4.7 km deep · released about 1,700 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Teton County 79 kmPark County 81 kmFremont County 88 kmPark County 89 kmGallatin County 95 kmTeton County 118 kmMadison County 118 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 3.2 (ml)
Depth
4.7 km below the surface
Felt
1 report · strongest reported intensity III
Nearest
Teton County, 79 km SSE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2024 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 1 person has reported feeling it to USGS.

How big was it?

This earthquake released about 1,700 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 6.7 200,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 9,100× the energy of this one
  3. Magna, Utah 2020 M 5.7 6,500× the energy of this one
  4. This earthquake M 3.2 about 1,700 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 44.7415, -110.6567. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Teton County, WY 79 km (49 mi) NNW of here earthquakes near Teton County
Park County, MT 81 km (50 mi) S of here earthquakes near Park County
Fremont County, ID 88 km (55 mi) NE of here earthquakes near Fremont County
Park County, WY 89 km (55 mi) WNW of here earthquakes near Park County
Gallatin County, MT 95 km (59 mi) SSE of here earthquakes near Gallatin County
Teton County, ID 118 km (73 mi) NNE of here earthquakes near Teton County

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

Aftershocks so far

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

  1. 2.4 27 km E of West Yellowstone, Montana
  2. 2.1 27 km ESE of West Yellowstone, Montana
  3. 2.1 27 km ESE of West Yellowstone, Montana
  4. 1.8 27 km ESE of West Yellowstone, Montana
  5. 2.5 38 km SE of West Yellowstone, Montana
  6. 2.0 27 km ESE of West Yellowstone, Montana
  7. 1.8 28 km ESE of West Yellowstone, Montana
  8. 2.4 27 km ESE of West Yellowstone, Montana
  9. 1.5 28 km ESE of West Yellowstone, Montana
  10. 1.8 27 km E of West Yellowstone, Montana
  11. 1.7 Wyoming
  12. 1.5 50 km SSE of Mammoth, Wyoming
  13. 1.5 25 km SE of West Yellowstone, Montana
  14. 1.7 57 km ESE of West Yellowstone, Montana
  15. 2.5 56 km SE 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.

For this area

The largest earthquake within 50 km in our catalogue was M 4.4 on 2017-06-16 — it released about 63 times the energy of this one.

From the QuakeIndex catalogue, built from the USGS FDSN event service.

On USGS

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