QuakeIndex

Earthquake · reviewed by a seismologist

M 2.9ml

51 km SE of Mammoth, Wyoming

· 5.8 km deep · released about 570 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Park County 59 kmTeton County 63 kmPark County 97 kmFremont County 102 kmTeton 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 2.9 (ml)
Depth
5.8 km below the surface
Felt
1 report · strongest reported intensity II
Nearest
Park County, 59 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1584 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 570 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 27,000× 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 2.9 about 570 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 44.6078, -110.3163. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Park County, WY 59 km (36 mi) WNW of here earthquakes near Park County
Teton County, WY 63 km (39 mi) N of here earthquakes near Teton County
Park County, MT 97 km (60 mi) S of here earthquakes near Park County
Fremont County, ID 102 km (64 mi) ENE of here earthquakes near Fremont County
Teton County, ID 118 km (73 mi) NE of here earthquakes near Teton County
Gallatin County, MT 121 km (75 mi) SSE of here earthquakes near Gallatin 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. 1.8 23 km SSW of Mammoth, Wyoming
  2. 2.0 20 km SSW of Mammoth, Wyoming
  3. 1.9 23 km SSW of Mammoth, Wyoming
  4. 1.5 23 km SSW of Mammoth, Wyoming
  5. 2.7 23 km SSW of Mammoth, Wyoming
  6. 1.8 23 km SSW of Mammoth, Wyoming
  7. 2.6 22 km SSW of Mammoth, Wyoming
  8. 2.1 42 km ESE of West Yellowstone, Montana
  9. 1.7 23 km SSW of Mammoth, Wyoming
  10. 2.0 23 km SSW of Mammoth, Wyoming
  11. 2.3 23 km SSW of Mammoth, Wyoming
  12. 3.0 23 km SSW of Mammoth, Wyoming
  13. 2.1 23 km SSW of Mammoth, Wyoming
  14. 2.1 23 km SSW of Mammoth, Wyoming
  15. 1.9 23 km SSW 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.