QuakeIndex

Earthquake · reviewed by a seismologist

M 2.3ml

56 km ESE of East Thermopolis, Wyoming

· 2.3 km deep · released about 91 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Washakie County 41 kmHot Springs County 77 kmNatrona County 86 kmJohnson County 94 kmFremont County 102 kmBig Horn 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 2.3 (ml)
Depth
2.3 km below the surface
Felt
no reports yet
Nearest
Washakie County, 41 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1704 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 91 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.3 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 170,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 120,000× the energy of this one
  3. Around the size people start to feel M 3.0 10× the energy of this one
  4. This earthquake M 2.3 about 91 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 43.5237, -107.5188. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Washakie County, WY 41 km (26 mi) SSE of here earthquakes near Washakie County
Hot Springs County, WY 77 km (48 mi) ESE of here earthquakes near Hot Springs County
Natrona County, WY 86 km (53 mi) NW of here earthquakes near Natrona County
Johnson County, WY 94 km (59 mi) SW of here earthquakes near Johnson County
Fremont County, WY 102 km (64 mi) ENE of here earthquakes near Fremont County
Big Horn County, WY 118 km (73 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

3 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

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 330 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.