QuakeIndex

Earthquake · reviewed by a seismologist

M 4.0mwr

57 km S of Ten Sleep, Wyoming

· 17 km deep · released about 15 tons of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Washakie County 46 kmNatrona County 78 kmJohnson County 87 kmHot Springs County 87 kmFremont County 112 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 4.0 (mwr)
Depth
17 km below the surface
Felt
58 reports · strongest reported intensity IV
Measured shaking
intensity III (ShakeMap)
USGS impact alert
green
Nearest
Washakie County, 46 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2999 days ago

This was a light earthquake. It is usually felt clearly nearby and can rattle windows and dishes, but damage is uncommon. 58 people have reported feeling it to USGS.

How big was it?

This earthquake released about 15 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 5.0 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 11,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 500× the energy of this one
  3. Magna, Utah 2020 M 5.7 350× the energy of this one
  4. This earthquake M 4.0 about 15 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 32× 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 43.5195, -107.3869. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Washakie County, WY 46 km (29 mi) SSE of here earthquakes near Washakie County
Natrona County, WY 78 km (49 mi) NW of here earthquakes near Natrona County
Johnson County, WY 87 km (54 mi) SW of here earthquakes near Johnson County
Hot Springs County, WY 87 km (54 mi) ESE of here earthquakes near Hot Springs County
Fremont County, WY 112 km (69 mi) ENE of here earthquakes near Fremont County
Big Horn County, WY 122 km (76 mi) SSE of here earthquakes near Big Horn County

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

Aftershocks so far

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

  1. 2.6 10 km SSE of Ten Sleep, Wyoming
  2. 3.7 Wyoming
  3. 2.3 56 km ESE of East Thermopolis, Wyoming
  4. 2.6 28 km SSE of Ten Sleep, Wyoming
  5. 3.6 43 km S of Ten Sleep, Wyoming
  6. 3.9 51 km S of Ten Sleep, Wyoming
  7. 2.8 30 km SSW of Ten Sleep, Wyoming
  8. 2.3 28 km NE of Shoshoni, Wyoming
  9. 2.4 24 km E of Shoshoni, Wyoming
  10. 2.4 33 km ENE of Shoshoni, Wyoming
  11. 2.9 57 km S of Ten Sleep, Wyoming
  12. 2.5 52 km S of Ten Sleep, 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.