QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7ml

28 km WSW of Bear River, Wyoming

· 9.6 km deep · released about 11 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Morgan County 28 kmRich County 42 kmWeber County 46 kmSummit County 52 kmCache County 64 kmUinta County 64 kmDavis County 78 kmSalt Lake County 83 kmWasatch County 103 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 1.7 (ml)
Depth
9.6 km below the surface
Felt
no reports yet
Nearest
Morgan County, 28 km SW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 928 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 11 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,400,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,000,000× the energy of this one
  3. Around the size people start to feel M 3.0 89× the energy of this one
  4. This earthquake M 1.7 about 11 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 41.2565, -111.3230. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Morgan County, UT 28 km (18 mi) NE of here earthquakes near Morgan County
Rich County, UT 42 km (26 mi) S of here earthquakes near Rich County
Weber County, UT 46 km (29 mi) E of here earthquakes near Weber County
Summit County, UT 52 km (32 mi) NW of here earthquakes near Summit County
Cache County, UT 64 km (40 mi) SSE of here earthquakes near Cache County
Uinta County, WY 64 km (40 mi) W of here earthquakes near Uinta County

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

Aftershocks so far

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

  1. 1.7 8 km SSW of Randolph, Utah
  2. 2.1 8 km SSW of Randolph, Utah
  3. 1.9 14 km ENE of Huntsville, Utah
  4. 1.5 9 km ENE of Avon, Utah
  5. 2.1 3 km WNW of Huntsville, Utah
  6. 1.5 10 km ENE of Mountain Green, Utah
  7. 1.6 18 km N of Henefer, Utah
  8. 1.7 2 km ESE of Echo, Utah
  9. 3.3 13 km E of Huntsville, Utah
  10. 1.5 8 km E of Avon, Utah
  11. 1.9 7 km NE of Huntsville, Utah
  12. 1.5 7 km NE of Huntsville, Utah
  13. 1.6 14 km NE of Enterprise, Utah
  14. 1.5 9 km S of Morgan, Utah
  15. 1.6 9 km S of Morgan, Utah

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.