QuakeIndex

Earthquake · reviewed by a seismologist

M 2.4ml

5 km E of Shell, Wyoming

· 14 km deep · released about 120 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Big Horn County 23 kmSheridan County 71 kmWashakie County 74 kmBig Horn County 98 kmJohnson County 105 kmHot Springs County 108 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 2.4 (ml)
Depth
14 km below the surface
Felt
no reports yet
Nearest
Big Horn County, 23 km W
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1890 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

How big was it?

This earthquake released about 120 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.4 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 130,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 89,000× the energy of this one
  3. Around the size people start to feel M 3.0 7.9× the energy of this one
  4. This earthquake M 2.4 about 120 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 44.5415, -107.7097. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Big Horn County, WY 23 km (14 mi) E of here earthquakes near Big Horn County
Sheridan County, WY 71 km (44 mi) WSW of here earthquakes near Sheridan County
Washakie County, WY 74 km (46 mi) N of here earthquakes near Washakie County
Big Horn County, MT 98 km (61 mi) S of here earthquakes near Big Horn County
Johnson County, WY 105 km (65 mi) WNW of here earthquakes near Johnson County
Hot Springs County, WY 108 km (67 mi) NNE of here earthquakes near Hot Springs County

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

Aftershocks so far

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

  1. 2.4 5 km ESE of Manderson, Wyoming
  2. 2.8 8 km S of Shell, Wyoming
  3. 2.2 16 km ESE of Shell, 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.