QuakeIndex

Earthquake · reviewed by a seismologist

M 3.3ml

2 km NW of Little America, Wyoming

· -2.2 km deep · released about 1.3 tons of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Uinta County 64 kmDaggett County 81 kmSweetwater County 85 kmLincoln County 100 kmRich County 113 kmSummit 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 3.3 (ml)
Depth
-2.2 km below the surface
Felt
1 report · strongest reported intensity II
Measured shaking
intensity IV (ShakeMap)
Nearest
Uinta County, 64 km WSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 49 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 1 person has reported feeling it to USGS.

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 6,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 4,300× 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 2.6× 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 41.5567, -109.8830. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Uinta County, WY 64 km (40 mi) ENE of here earthquakes near Uinta County
Daggett County, UT 81 km (50 mi) NNW of here earthquakes near Daggett County
Sweetwater County, WY 85 km (53 mi) W of here earthquakes near Sweetwater County
Lincoln County, WY 100 km (62 mi) SE of here earthquakes near Lincoln County
Rich County, UT 113 km (70 mi) E of here earthquakes near Rich County
Summit County, UT 118 km (74 mi) NE of here earthquakes near Summit County

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

Aftershocks so far

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

  1. 3.1 3 km NW of Little America, Wyoming
  2. 3.4 3 km NNW of Little America, Wyoming
  3. 3.8 22 km NE of Granger, Wyoming
  4. 3.0 2 km NNW of Little America, Wyoming
  5. 3.0 3 km NW of Little America, Wyoming
  6. 3.1 2 km NNW of Little America, Wyoming
  7. 3.3 2 km NW of Little America, Wyoming
  8. 3.1 2 km NNW of Little America, 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.