QuakeIndex

Earthquake · reviewed by a seismologist

M 2.9ml

17 km WSW of Garden, Utah

· 6.8 km deep · released about 780 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Cache County 17 kmRich County 36 kmFranklin County 43 kmBear Lake County 55 kmWeber County 67 kmMorgan County 82 kmLincoln County 87 kmOneida County 87 kmDavis County 102 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 2.9 (ml)
Depth
6.8 km below the surface
Felt
15 reports · strongest reported intensity II
Measured shaking
intensity III (ShakeMap)
Nearest
Cache County, 17 km SW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 145 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 15 people have reported feeling it to USGS.

How big was it?

This earthquake released about 780 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 19,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 14,000× the energy of this one
  3. Around the size people start to feel M 3.0 1.2× the energy of this one
  4. This earthquake M 2.9 about 780 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 41.8307, -111.5832. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Cache County, UT 17 km (11 mi) NE of here earthquakes near Cache County
Rich County, UT 36 km (23 mi) NW of here earthquakes near Rich County
Franklin County, ID 43 km (27 mi) SSE of here earthquakes near Franklin County
Bear Lake County, ID 55 km (34 mi) SSW of here earthquakes near Bear Lake County
Weber County, UT 67 km (42 mi) NNE of here earthquakes near Weber County
Morgan County, UT 82 km (51 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

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

  1. 0.8 9 km W of Garden, Utah
  2. 1.8 1 km SE of Cornish, Utah
  3. 1.7 1 km SE of Cornish, Utah
  4. 1.6 17 km E of North Logan, Utah
  5. 1.7 8 km SSW of Randolph, Utah
  6. 2.1 8 km SSW of Randolph, Utah
  7. 1.6 15 km E of Providence, Utah
  8. 2.6 15 km W of Paris, Idaho
  9. 1.6 13 km ESE of Millville, Utah
  10. 1.9 16 km E of Providence, Utah
  11. 2.0 12 km E of Millville, Utah
  12. 2.6 12 km E of Millville, Utah
  13. 2.0 10 km W of Garden, Utah
  14. 2.0 Utah
  15. 1.5 9 km ENE of Avon, 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.