QuakeIndex

Earthquake · reviewed by a seismologist

M 1.5ml

6 km E of Avon, Utah

· 11 km deep · released about 6.2 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Cache County 23 kmWeber County 31 kmRich County 43 kmMorgan County 50 kmDavis County 67 kmFranklin County 72 kmBear Lake County 91 kmSalt Lake County 97 kmSummit County 97 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 1.5 (ml)
Depth
11 km below the surface
Felt
no reports yet
Nearest
Cache County, 23 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 786 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 6.2 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,500,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,700,000× the energy of this one
  3. Around the size people start to feel M 3.0 150× the energy of this one
  4. This earthquake M 1.5 about 6.2 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 41.5262, -111.7343. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Cache County, UT 23 km (14 mi) S of here earthquakes near Cache County
Weber County, UT 31 km (19 mi) NNE of here earthquakes near Weber County
Rich County, UT 43 km (26 mi) WSW of here earthquakes near Rich County
Morgan County, UT 50 km (31 mi) NNW of here earthquakes near Morgan County
Davis County, UT 67 km (42 mi) NE of here earthquakes near Davis County
Franklin County, ID 72 km (45 mi) S of here earthquakes near Franklin County

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

Aftershocks so far

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

  1. 0.8 9 km W of Garden, Utah
  2. 1.6 17 km E of North Logan, Utah
  3. 1.7 8 km SSW of Randolph, Utah
  4. 2.1 8 km SSW of Randolph, Utah
  5. 1.9 14 km ENE of Huntsville, Utah
  6. 1.6 15 km E of Providence, Utah
  7. 1.6 13 km ESE of Millville, Utah
  8. 1.9 16 km E of Providence, Utah
  9. 2.0 12 km E of Millville, Utah
  10. 2.6 12 km E of Millville, Utah
  11. 2.0 10 km W of Garden, Utah
  12. 2.0 Utah
  13. 1.5 9 km ENE of Avon, Utah
  14. 2.1 3 km WNW of Huntsville, Utah
  15. 1.5 10 km ENE of Mountain Green, 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.