QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

10 km E of Franklin, Idaho

· 9.3 km deep · released about 17 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Franklin County 23 kmCache County 30 kmBear Lake County 44 kmRich County 55 kmOneida County 72 kmWeber County 82 kmLincoln County 87 kmCaribou County 89 kmBannock County 89 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
9.3 km below the surface
Felt
no reports yet
Nearest
Franklin County, 23 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1972 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 17 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 5.8 900,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 640,000× the energy of this one
  3. Around the size people start to feel M 3.0 57× the energy of this one
  4. This earthquake M 1.8 about 17 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 41.9963, -111.6887. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Franklin County, ID 23 km (14 mi) SSE of here earthquakes near Franklin County
Cache County, UT 30 km (18 mi) N of here earthquakes near Cache County
Bear Lake County, ID 44 km (27 mi) SW of here earthquakes near Bear Lake County
Rich County, UT 55 km (34 mi) NW of here earthquakes near Rich County
Oneida County, ID 72 km (45 mi) ESE of here earthquakes near Oneida County
Weber County, UT 82 km (51 mi) N of here earthquakes near Weber County

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

Aftershocks so far

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

  1. 1.9 15 km WSW of Bloomington, Idaho
  2. 2.5 10 km WSW of Garden, Utah
  3. 1.5 14 km ESE of North Logan, Utah
  4. 1.5 3 km SE of Nibley, Utah
  5. 1.6 Utah
  6. 2.3 14 km SW of Garden, Utah
  7. 1.6 7 km ESE of North Logan, Utah
  8. 1.7 15 km WSW of Bennington, Idaho
  9. 1.7 Utah
  10. 2.5 2 km NNW of Benson, Utah
  11. 3.2 1 km NE of Benson, Utah
  12. 1.9 Utah
  13. 2.7 1 km NNE of Benson, Utah
  14. 1.8 1 km NNE of Benson, Utah
  15. 1.9 3 km NNW of Benson, 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.