QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

7 km E of North Logan, Utah

· 16 km deep · released about 15 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Cache County 5 kmRich County 42 kmFranklin County 46 kmWeber County 57 kmBear Lake County 66 kmMorgan County 76 kmOneida County 81 kmDavis County 91 kmLincoln County 100 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 1.8 (ml)
Depth
16 km below the surface
Felt
no reports yet
Nearest
Cache County, 5 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2197 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 15 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,000,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 730,000× the energy of this one
  3. Around the size people start to feel M 3.0 65× the energy of this one
  4. This earthquake M 1.8 about 15 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 41.7690, -111.7155. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Cache County, UT 5 km (3 mi) NNE of here earthquakes near Cache County
Rich County, UT 42 km (26 mi) WNW of here earthquakes near Rich County
Franklin County, ID 46 km (28 mi) S of here earthquakes near Franklin County
Weber County, UT 57 km (35 mi) NNE of here earthquakes near Weber County
Bear Lake County, ID 66 km (41 mi) SSW of here earthquakes near Bear Lake County
Morgan County, UT 76 km (47 mi) N of here earthquakes near Morgan County

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

Aftershocks so far

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

  1. 3.6 7 km SW of Corinne, Utah
  2. 1.8 7 km SW of Corinne, Utah
  3. 1.9 Utah
  4. 1.7 7 km SW of Corinne, Utah
  5. 2.3 17 km ENE of North Logan, Utah
  6. 1.6 7 km SW of Corinne, Utah
  7. 2.7 Utah
  8. 1.9 5 km W of Garland, Utah
  9. 2.1 7 km WSW of Corinne, Utah
  10. 2.1 14 km E of Providence, Utah
  11. 1.7 13 km SE of Avon, Utah
  12. 1.6 10 km SE of Avon, Utah
  13. 2.0 4 km NE of Trenton, Utah
  14. 1.6 11 km ESE of North Logan, Utah
  15. 1.8 11 km E of Providence, 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.