QuakeIndex

Earthquake · reviewed by a seismologist

M 3.3ml

Wyoming

· 5.0 km deep · released about 1.3 tons of TNT

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10 km30 km60 km120 km N Washakie County 29 kmHot Springs County 36 kmBig Horn County 73 kmFremont County 102 kmJohnson County 117 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 3.3 (ml)
Depth
5.0 km below the surface
Felt
no reports yet
Nearest
Washakie County, 29 km E
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1353 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 1.3 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.3 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 130,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 5,600× the energy of this one
  3. Magna, Utah 2020 M 5.7 4,000× the energy of this one
  4. This earthquake M 3.3 about 1.3 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 2.8× 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 43.8693, -108.0343. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Washakie County, WY 29 km (18 mi) W of here earthquakes near Washakie County
Hot Springs County, WY 36 km (22 mi) ENE of here earthquakes near Hot Springs County
Big Horn County, WY 73 km (45 mi) S of here earthquakes near Big Horn County
Fremont County, WY 102 km (63 mi) NNE of here earthquakes near Fremont County
Johnson County, WY 117 km (73 mi) W of here earthquakes near Johnson County
Sheridan County, WY 137 km (85 mi) SW of here earthquakes near Sheridan County

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

Aftershocks so far

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

  1. 2.4 5 km ESE of Manderson, Wyoming
  2. 2.6 17 km ESE of Lucerne, 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.