QuakeIndex

Earthquake · reviewed by a seismologist

M 2.9ml

57 km S of Ten Sleep, Wyoming

· 5.0 km deep · released about 680 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Washakie County 44 kmNatrona County 81 kmHot Springs County 83 kmJohnson County 90 kmFremont 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 2.9 (ml)
Depth
5.0 km below the surface
Felt
no reports yet
Nearest
Washakie County, 44 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3161 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

How big was it?

This earthquake released about 680 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 22,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 16,000× the energy of this one
  3. Around the size people start to feel M 3.0 1.4× the energy of this one
  4. This earthquake M 2.9 about 680 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 43.5190, -107.4433. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Washakie County, WY 44 km (27 mi) SSE of here earthquakes near Washakie County
Natrona County, WY 81 km (51 mi) NW of here earthquakes near Natrona County
Hot Springs County, WY 83 km (52 mi) ESE of here earthquakes near Hot Springs County
Johnson County, WY 90 km (56 mi) SW of here earthquakes near Johnson County
Fremont County, WY 108 km (67 mi) ENE of here earthquakes near Fremont County
Big Horn County, WY 120 km (75 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

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

  1. 2.6 17 km ESE of Lucerne, Wyoming
  2. 2.6 10 km SSE of Ten Sleep, Wyoming
  3. 3.7 Wyoming
  4. 2.3 56 km ESE of East Thermopolis, Wyoming
  5. 2.6 28 km SSE of Ten Sleep, Wyoming
  6. 3.6 43 km S of Ten Sleep, Wyoming
  7. 3.9 51 km S of Ten Sleep, Wyoming
  8. 2.8 30 km SSW of Ten Sleep, Wyoming
  9. 2.3 28 km NE of Shoshoni, Wyoming
  10. 2.4 24 km E of Shoshoni, Wyoming
  11. 2.4 33 km ENE of Shoshoni, 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.

For this area

The largest earthquake within 50 km in our catalogue was M 4.0 on 2017-11-03 — it released about 45 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.